José Zurita: Six, thank you for the recording, so now we mean to me, yes, are you there.
Elias Bernreuther: Yes, I am.
José Zurita: Oh, I will call fantastic a sharing your slides.
Elias Bernreuther: Can you see the slides.
José Zurita: yeah.
José Zurita: Okay, so I think in.
José Zurita: Real time without further ado, we have, yes, good or not or workshops and we will talk about the dark side was at the non duality statement, please.
Elias Bernreuther: Okay, thank you um.
Elias Bernreuther: So I suppose it's just just said, this would be a bit of a change of topic, and that this talk will not primarily be about energy physics.
Elias Bernreuther: But about doctrine, was it built, and this is based on this paper here that came out in March and was a really nice collaboration between a couple of fundamentalists and.
Elias Bernreuther: Few to experimentalists so my collaborators on this work, a boozer Felix condo find a sandwich endymion cash metal back on the female side and we'll send them, just like me.
Elias Bernreuther: And Tom fabry and Christopher hearty who are experimentalists and are part of the virtual collaboration.
Elias Bernreuther: So to jump right in we've already heard earlier in the session why am dark showers are.
Elias Bernreuther: Interesting at the College scene, but why should we also care about the melanin experiment like Belgium and the answer to that question has a lot to do with the fact that over the last year's like directors have become increasingly attractive basically because we haven't seen webs.
Elias Bernreuther: And by light dark sector in this case I mean dark sectors with particles that have masses at the low end of the TV scale.
Elias Bernreuther: or even at the subject the scale and for these very light stocks like this, the most sensitive accelerator probes in many cases don't come from the llc but instead from intensity from two experiments so from a from a range of different fixed target and a plus or minus collider experiments.
Elias Bernreuther: That have much lower Center of mass energies and yellow see of course but extremely high luminosity and one of the most sensitive.
Elias Bernreuther: probes at this intensity frontier is the virtual experiment, which is a big factor experiment at any plus minus collided with the Center of mass and energy of 10.5 TV okay So how do we normally look for dark sectors at the factory experiment like they'll to.
Elias Bernreuther: One standard straightforward way to look for the production of dark matter is to look for single photons So there you basically look for process that.
Elias Bernreuther: looks like the one that shown here in this diagram.
Elias Bernreuther: Where you produce invisible dark metal particles that recoil against single photon radiated off the initial stage.
Elias Bernreuther: And this is a great probe and if the mediator that connects the dog metal particles, to the standard model.
Elias Bernreuther: can be produced on Shell, so if it's light enough to be produced directly at virtual, because in that case it basically shows up as a resident speaker and the energy spectrum of the single photo.
Elias Bernreuther: But the searches lose a lot of their sensitivity, when that is not the case, so when you're dealing with a heavy mediator and you don't see results.
Elias Bernreuther: So in that scenario, it can be much more motivated to look for more exotic signatures of directors instant and as we've already heard a particularly striking example of such an exotic director signature is adoption.
Elias Bernreuther: So, as we thought was conference strongly interactive Doc sectors, meaning Doc sectors that resemble to CD in the sense that there's some new nano billion each group in the Doc sector and some.
Elias Bernreuther: quirks that transform in this age group, and then you can write down a dark sector, the grungy and that basically looks like the QC lagrangian.
Elias Bernreuther: And then it's sufficiently low energy is where the sector confines you get a range of different bound States, some of which can be excellent dogmatic candidates and for the purpose of this talk i'll consider model here, where the dog pions on the dogmatic the dates.
Elias Bernreuther: And then you also get a bunch of different states that are generic unstable and can you to visible signatures at night experiments and in the model that we're considering here, and this is particularly true of the director miss ons which are here witness roadie.
Elias Bernreuther: And so, for the reason that I just motivated on the previous slide.
Elias Bernreuther: it's particularly well motivated to look for dog shower instead of a simpler director signature like single photons.
Elias Bernreuther: If the mediator connecting the dark sector to the standard model is out of reach at the experiment it's too heavy So this is the limit that i'll be considering here, and in that case, if the media to sufficiently heavy you can describe the the interaction between the standard model.
Elias Bernreuther: particles and clocks as far as true is concerned simply in terms of an effective interaction.
Elias Bernreuther: And for completeness or consider a vector portal interaction here.
Elias Bernreuther: Which is shown down here, and it has some scale in front that we call Lambda that parameter rises, the strength of this interaction.
Elias Bernreuther: And then it's through this effective interaction the quants can be produced as an a plus or minus collider.
Elias Bernreuther: So, and this then gets eventually to production, so the diagram or an illustration of that is shown here.
Elias Bernreuther: Where this blob stands for the effective interaction and then, once you've produced the duck walk through this effective interaction they radiate off dark blue ones, and you get a shower within the stock sector.
Elias Bernreuther: That ends in everything have amazing and do a bunch of different dogmatic stance and then some of those documents on states will be stable.
Elias Bernreuther: In this model, in particular the dog pions which are the dog metal particles.
Elias Bernreuther: while others can be came back, and this is true of the road dogg zero marathons.
Elias Bernreuther: So of this flavor diagonal.
Elias Bernreuther: flavor diagonal Dr Thomas Thank you back through exactly the same portal that is also responsible for the production of the dark box for this effective portal and when this black Muslims are light than the relevant final states for them our standard model leptons and Center model.
Elias Bernreuther: marathons that are sufficiently life so essentially pions accounts.
Elias Bernreuther: And what's also true when these dogmas ons are light is that in much of the interesting parameter space dedicates are displaced, because they have a macroscopic lifestyle.
Elias Bernreuther: And what's nice about this effective.
Elias Bernreuther: This effective interaction limit here is that.
Elias Bernreuther: Both the production, both for describing the production of these dogmas on lps and also dedicate length and.
Elias Bernreuther: Two parameters are enough, and so, both of these things basically only depend on the.
Elias Bernreuther: dogmas on mass and so LP masa and on this Lambda, which is the skein of this effective interaction so we're dealing with a very simple two dimensional parameters space here.
Elias Bernreuther: Now, in terms of experimental such as i'm so far there is no plan to have a dedicated search production, I was at bell to.
Elias Bernreuther: But there is a plan due to my experimental collaborators and to carry out a model agnostic search for like long as particles of Belgium, which will also be sensitive child actual model, and so what they are planning to look for.
Elias Bernreuther: lights long with particles that decay into pairs of opposite be charged electrons neutrons pions okay ions.
Elias Bernreuther: Transport Systems distance between Point two centimeters and 60 centimeters from the interaction point and what's nice about the such as that it's.
Elias Bernreuther: it's expected that, at least as long as your signal can pass one of the triggers.
Elias Bernreuther: very loose selection cats on the lps are enough to suppress background to.
Elias Bernreuther: negligible level.
Elias Bernreuther: Right.
Elias Bernreuther: So these are projections here for this display semantic search and in terms of the parameter space of our doctrine last.
Elias Bernreuther: So here we have the dogmas on mass, which is the LP mouse on the X axis.
Elias Bernreuther: And the decay length, in this case on the y axis, which is completely determined by the this effective interaction Lambda and by the mass so.
Elias Bernreuther: We really as advertised are only dealing with two parameters here there's no hidden parameters in this place.
Elias Bernreuther: And the budget projection is shown in green.
Elias Bernreuther: And compared to recast in terms of our actual model of a similar search that was done a couple of years ago with Baba which has shown in blue and it's clear.
Elias Bernreuther: That even which has 500 invest into bands.
Elias Bernreuther: Of luminosity, which is what this prediction.
Elias Bernreuther: What which, which is what is considered in this projection and bell to can improve enormously over the existing performance.
Elias Bernreuther: Then, just as a quick side remark in this long list particle top I just want to quickly mention that there are also.
Elias Bernreuther: complimentary constraints that become important in the part of the parameter space for the case of prompt and these particular come from.
Elias Bernreuther: from existing search set the bar for visible resonances and and what can also become important as a bell to search for single photons in the future.
Elias Bernreuther: and which are shown here, but this is just a side remark and so back to long live particles and everything that i've shown so far this and the factory constraints like I said only depend on this.
Elias Bernreuther: Effective interaction and not on the not on the details of the underlying mediator.
Elias Bernreuther: So if we want to probe the.
Elias Bernreuther: mediator that underlies this affects interaction and then we need to look at higher energies whether a mediator can be produced on Shell, which essentially means looking at the llc and, interestingly, there was.
Elias Bernreuther: Such done that LCP a few years ago, or.
Elias Bernreuther: A few years ago.
Elias Bernreuther: Where they looked for.
Elias Bernreuther: Lo MAS Damien resonances that are displaced.
Elias Bernreuther: Which is also sensitive to the light longest particles from dark shadows and and what shown here in these plots as a comparison of these http constraints to the bell to projections, and the reason why I have to plots here is because.
Elias Bernreuther: Unlike the bell to projections the LCP constraints and depend on the except mass and couplings of the mediator that underlies this effective interaction, this means for any given value of this Lambda, which is the effective interaction scale that fully determines that the constraints.
Elias Bernreuther: There will be underlying mediator configurations that are more sensitive edit a more favorable to fcp and underlying scenarios that are more favorable to build to and on the left, we have basically maximally two favorable scenario and on the Right or maximum the http favorable scenario.
Elias Bernreuther: In both cases, the ocb constraints, have shown here and read and the bill to projections are showing again in green, we can make basically two.
Elias Bernreuther: important observations here one is that the LCP constraints and the two projections are highly complimentary the sensitive to similar parts of the parameter space, but slightly different lengths.
Elias Bernreuther: And the other observation, we can make is that, even in the least favorable scenario there's still a very strong case to carry on such a such a bell to.
Elias Bernreuther: Which brings me to my conclusions, and so I wanted to show that light strongly interacting directors and which are no well motivated scenario, as we have heard many times already, and can give rise to know our signatures, not just that really see but also appeal to.
Elias Bernreuther: And it's especially interesting to look for those in the case where the dark sector is connected to the Center model through and effective interaction.
Elias Bernreuther: In this case, display static stretches at bell to kind of prove greatly over I have the potential to produce for to improve greatly over existing limits from a bar and they also complimentary to.
Elias Bernreuther: Be factory constraints in the prompt regime and to display static searches at the llc Thank you.
José Zurita: awesome Okay, thank you idea for this nice presentation and we open the floor for.
questions.
José Zurita: Okay, I think the time is killing Julia.
Juliette Alimena: yeah I had a quick question on slide five, I think.
Juliette Alimena: There was.
Juliette Alimena: You had a right.
Juliette Alimena: Between 0.2 centimeters and 60 centimeters Is this a selection that you need to to apply, or is it you're just sort of telling me the the acceptance that you get.
Juliette Alimena: and
yeah.
Elias Bernreuther: yeah that that just comes from the size of the relevant detector elements, where you can.
Elias Bernreuther: Do metric acceptance yeah.
Juliette Alimena: Okay, good.
Juliette Alimena: i'm wondering if you needed to apply like some additional cut or something like that.
Elias Bernreuther: And there's a little bit of a caveat to this range so that I didn't show on slide and, namely that for you, plus C minus final states we actually exclude some part of range.
Elias Bernreuther: From I think about one centimeter to 17 centimeters I think.
Elias Bernreuther: Because of because of the Convention background.
Elias Bernreuther: and for the other final states, the full range.
Juliette Alimena: Okay um i'm wondering now if you can do something, maybe more sophisticated in the next iteration to so you don't have to cut out, you know transverse distance.
Juliette Alimena: You know what I mean.
Elias Bernreuther: So.
Elias Bernreuther: What do you mean by most sophisticated, but what you have in mind.
Juliette Alimena: Oh, I don't know It just seems that.
Juliette Alimena: That this limits your lifetime acceptance so i'm wondering if you can target the backgrounds, that you need to to reject in some some other way.
Elias Bernreuther: yeah yeah rejecting this this whole range of it's a bit of a.
Elias Bernreuther: is possibly too concerned.
Elias Bernreuther: But i'd have to I mean.
Elias Bernreuther: This is something that I need to talk about.
Elias Bernreuther: Experimental collaborators and natural.
José Zurita: Okay, thanks okay with security later we moved to matt's comment.
Matt Strassler: Just following on to the next question.
Matt Strassler: What kind of fruit for these measurements, what kind of mass resolution can they get.
Elias Bernreuther: And so the environment mass was a version of the of the decay products.
yeah.
Elias Bernreuther: So.
Elias Bernreuther: i'm not exactly sure about the exact value of the masters of illusion I don't.
Elias Bernreuther: want to say anything wrong so for this.
Elias Bernreuther: For this projection we didn't actually do a bump on if that's what you're getting at, but just calendar constructed this place versus.
Right.
Matt Strassler: I mean, one of the play one of the places you could push a little harder on the back.
Elias Bernreuther: yeah, that is, that is certainly true yeah.
Elias Bernreuther: So, so you know, in an actual implementation of the search and one would definitely do a bump on of some kind, and this is a, this is a bit of a.
Elias Bernreuther: Poor theorists version of the search.
Elias Bernreuther: And I think that's fair enough for for a projection.
Matt Strassler: screen This is great stuff thanks.
Matt Strassler: Okay.
José Zurita: So, since we see no further questions we sent alias again for this tour from etsy and we move to our next speaker.
José Zurita: Last sku so with club.
Caleb Gemmell: Yes, i'm here.
José Zurita: at St yeah.
José Zurita: So college stock was already some How does he pay directly to the stock so without further, though, we see how one can simulate a young male structure.
José Zurita: If you want to share in full screen yeah.
Caleb Gemmell: Yes, I was just doing it now.
Thank.
José Zurita: You I will let you know when you are only have two minutes left.
Caleb Gemmell: Who Thank you.
Caleb Gemmell: i'm cool yeah so today i'll be talking about the simulation and indirect detection global shells so she thought bell to sort of out of the way this goes a little bit further away from collider studies.
Caleb Gemmell: But the main thing I wanted to talk about is sort of this simulation aspect of global production, and that was based on work with Deborah code and increase behind that we recently released earlier in the year.
Caleb Gemmell: And the indirect indirect detection segment of the talk is sort of a preliminary look into how you can apply this tool in some a true realistic physics searches.
Caleb Gemmell: So to jump straight into it, this is sort of the process we're looking at in terms of global production.
Caleb Gemmell: Where we're considering a dogmatic candidate that annihilated clones these diagrams will go through some hedge innovation process into the global states were sort of intention glitch Vegas some non-paternity of looking blog.
Caleb Gemmell: Great but, once we have.
James Beacham (he/him): All these are just me, or is this Green dark.
José Zurita: For other people it is black, can you try to share it again.
Caleb Gemmell: Oh sorry um.
James Beacham (he/him): But just be a reshare or kind of.
Caleb Gemmell: click yeah yeah yeah.
Caleb Gemmell: Oh stop sharing and just start again see if that fixes it.
José Zurita: mm hmm a full screen mode instead of presentation, maybe that.
Caleb Gemmell: Was this.
nails.
Michael Albrow: I thought it was intentional picture of the dark sector.
Caleb Gemmell: Should plan ahead so if I isn't.
Caleb Gemmell: Still now.
Can you click.
James Beacham (he/him): Can you change slides.
Caleb Gemmell: You guys as things popping up.
James Beacham (he/him): I don't know it's still on this outline slide only, but if you click on the screen first and then go back and forth.
James Beacham (he/him): Now, no dice Okay, we got.
The best.
Caleb Gemmell: So I might just have to scroll through sorry.
James Beacham (he/him): so good.
Caleb Gemmell: um yeah as I was saying.
Caleb Gemmell: Once we have a global states, we can educate them back to the.
Caleb Gemmell: standard model, and so, in my talk i'll just sort of go through each part, bit by bit, where our first talk about why we're interested in these are models that were doctors annihilating to go ones.
Caleb Gemmell: are then talk about how we handle the dark blue balls and how they decay, to the standard model.
Caleb Gemmell: And, but most importantly we'll talk about how.
Caleb Gemmell: into today got dark blue balls.
Caleb Gemmell: And because, once we answer all these questions that allows us to approach the overall question of how do we get indirect detection to constraints for this process.
Caleb Gemmell: And so i'm sure you sort of heard a lot in this block about dark showers how they arise from any vote bit hidden valley models and my are interested in them so just quickly go through just the main points.
Caleb Gemmell: Which is that we're just concerned, some dark and finding sector, that is, all the particles in that sector uncharged from the Center model and the only couple indirectly by what we call portal couplings.
Caleb Gemmell: Theoretically, motivated by the fact that they can solve ongoing problems by providing documented candidates or solving the whole hierarchy problem.
Caleb Gemmell: But they're also experimentally motivated because so far they do quite a good job at evading our current constraints.
Caleb Gemmell: But i'm what i'm interested in looking at is the specific case where there's no light colored states below the confinement scale.
Caleb Gemmell: And, in which, after confinement, the only states, you get our global's which a composite going states.
Caleb Gemmell: And we're interested in looking into this corner of the parameter space because, like in the other corner it's just as motivated.
Caleb Gemmell: But there's been very few quantitative study so far into it, due to the fact that in these global shows the modernization models, we use in the Center model and can no longer directly apply, so you have to put a little more thought into how we approach that process.
Caleb Gemmell: or then go forward into about the global the case.
Caleb Gemmell: So our global's in general have been studied on last Tuesday, so we can import that knowledge for our global sector.
Caleb Gemmell: And so we know that the mass spectrum of the states can be entirely parameters by the confinement scale.
Caleb Gemmell: And this is quite Nice because it is a sort of simplified parameter region where just from the single confinement scale we get the mass spectrum of all 12 global states, as well as the quantum numbers and additionally.
Caleb Gemmell: Doc levels have been studied on the we this case i've been studied and depend on the UV completion of your sector.
Caleb Gemmell: But for the extent of this work um I mean for this talk I just cover a dimension six pigs operator we're Essentially, we have a heavy call that couples to the higgs.
Caleb Gemmell: And this will allow the global snakes for the higgs where, for example, the lightest state decays directly through the higgs portal to set a model, while the heavier global states on radiate and our Shell higgs and then themselves to came to a lighter global.
Caleb Gemmell: But get into the sort of meat and bones of the talks I want to talk about this Doc glue on hedren ization and how do we approach that and how you can do that.
Caleb Gemmell: And to sort of skip straight to the answer is to use glue Shell, which is the Python code that we publicly released me and my collaborators, alongside the.
Caleb Gemmell: push out paper earlier in the year and for these sort of link to the talk i'll just give a sort of schematic cartoonish representation of some of the head on ization um approximations we make, and how we can incorporate that into a sort of final theory on 70.
Caleb Gemmell: So to start off i'll just consider a single global species with mass in North and the simplest cases if we just start with two goals being produced having to the hedge nose into to glue balls.
Caleb Gemmell: And so, since we start off with to update blue ones for them to form color single at Google both states at the end of the shower.
Caleb Gemmell: there's to be some color exchange between the branches, and so you can see, the security by how they exchange glow and split and i've been shared between the two branches to form the global's but another representation, we can think of, is in terms of flux jude's.
Caleb Gemmell: So here, for example on the right, we started, for that to gluons being connected by the two flux troops to form a closed loop.
Caleb Gemmell: And, as it evolves down the shower extra gluons have produced in extra colin's i'm informed, but are the separations to simulate global's is akin to the single loop sort of twisting over itself and allow it being allowed to fragment due to the similar color charge links.
Caleb Gemmell: And so, comparing between the two representations, what we see is that this process is allowed, when we have this long range exchange of glow on between the two branches.
Caleb Gemmell: And just using our sort of standard model QC intuition, we know that as we we started with a particular shell.
Caleb Gemmell: As we approach the confinement scale a coupling is running large and this blown emission is becoming depressed so this sort of leads us to sort of some standard object like intuition.
Caleb Gemmell: Whereas I said, we have a particular shower and this fragmentation is occurring close to the confinement scale so to just start off with we're going to use this intuition.
Caleb Gemmell: And i'll jump off that into sort of consider some other general sharp possibilities.
Caleb Gemmell: So to start off with just a base case we, as I said earlier, use up a ticket of QC D to shower Doc loans and so they can split, as we know.
Caleb Gemmell: But then eventually we have to terminate some shower at which we call our head and ization scalable and ahead and we sit that to be to ignore, which is the mass scale of delight as possible.
Caleb Gemmell: Because it's at this point, wants to go and reach it, as this point in the shower it can no longer be no longer on split into two on chuck blue balls so this gives us quite a nice up as us.
Caleb Gemmell: upper bound on the final state multiplicity of global's by using this scale as our terminating the regular Shell, but if we want to consider alternative shower histories, we want to think of how can we internally consistently generate showers with fewer final state clipboards.
Caleb Gemmell: And so, this can be achieved by just simply increasing our head on ization scale, so this means we introduce and welcome to pluck it effective that allows us to tune this Gala which the shadow terminates.
Caleb Gemmell: And so, being able to sort of like search through that parameter value it gives us a way of generating theory uncertainty and our final signal.
Caleb Gemmell: Additionally, I mentioned that we've only considered a single Google species, but in reality there is a whole spectrum of states, so we do this by.
Caleb Gemmell: Using a thermal model to generate the relative label multiplicity and the arousal marketplaces are mainly controlled by this federalisation temperature.
Caleb Gemmell: On this is zero thought approximation, as are motivated by the fact that close string admission does follow with them will distribution.
Caleb Gemmell: And we have a quite a good idea of the confinement temperature, which has been calculated and latest CD.
Caleb Gemmell: But there's limitations to this, they could be non local effects of the FLEX through dynamics, so we again entries and other multiplicative parameter that allows you to.
Caleb Gemmell: adjust your head and ization tab to see how that would affect the final state route of global multiplicity so that's another again internal parameter, you can sort of play with to explore possibilities.
Caleb Gemmell: But to take it even further and sort of leave behind this standard margin like intuition.
Caleb Gemmell: If we really crank up the hadron ization scale we're going to be terminating the shower when it going is highly virtual so no longer makes sense to just associated with one single on blue ball.
Caleb Gemmell: So we consider as a sort of filed alternative is that.
Caleb Gemmell: If this blue on is terminated and has a large highly vigil mass it's more like a highly excited global or a large mass pilgrim plasmon so that would that's they will then have to decay.
Caleb Gemmell: Via sorry evaporate by equitable and mission, and so it does so, similarly, as we handle suit so it's just an eisner Tropic thermal emission of blue balls.
Caleb Gemmell: And this is what we would consider as a placement case which is a more exotic possibility of pure hedge on ization.
Caleb Gemmell: So this is a less motivated than the sort of standard model jet like intuition, but we included for completeness sake.
Caleb Gemmell: To get us a wide range of possibilities in this pilgrimage and ization process.
Caleb Gemmell: So to summarize blue shower is the first month of calorie generated for domestic degree balls and, within that we've included two and a half nuisance parameters.
Caleb Gemmell: That include and Code, the theoretical insanities within the approximations we making regarding the global header and ization process.
Caleb Gemmell: And so, within our paper that was released alongside that we provide some benchmark parameter points that cover a motivated extent of the possible outputs.
Caleb Gemmell: So as an example here i'm using glue show you can generate fragmentation functions for a global production, as you can see here across the parameter.
Caleb Gemmell: benchmark points how the fragmentation functions very, for example, the plasma like case tends to favor softer showers while the JET like standard model motivated interpretation favors hotter shadows.
Caleb Gemmell: But sort of one application, we can use is to for the indirect detection back global shadows and one reason we looking at indirect detection is that can prob astrophysical link scales.
Caleb Gemmell: And so, this could possibly give you more insight into the dark sector spectrum of the case, not just the shortest live states that you may be able to access at collider searches.
Caleb Gemmell: But taking those fragmentation functions in combination with the.
Caleb Gemmell: Global decay spectra we get the photon spectrum for the entire dark matter.
Caleb Gemmell: annihilated by this global show, and you can see how the spectra depends on the assumptions we've made during the global header and ization with each picture, corresponding to the eight benchmark parameter points.
Caleb Gemmell: Where we can now use the spectra to generate in directed to take some constraints.
Caleb Gemmell: so familiar femi has heavily provided the likelihood profiles for their daughter it'll dogmatic candidate searches.
Caleb Gemmell: And so here i've just i'm so, for example, if I just look at the blue and green Those are our jet like interpretation.
Caleb Gemmell: And for various parameter points looking at different hedge on ization scales in different temperatures, but using those footprint of points that gives us a sort of theoretical uncertainly band.
Caleb Gemmell: On that indirect detection constraint and see it mostly matches alongside the simple bb bb production, and so you consider the template case, we can see are for the present like interpretation, we do start to see a little bit deviation at a more extreme level.
Caleb Gemmell: um so wrap up now, I just want to say that Doc showers or chicken signature of hidden valley models motivated a solution to the hierarchy problem.
Caleb Gemmell: and its ability to so far evade a lot of our constraints, but I sort of mostly want to pitch for getting involved in the zero for a bookcase centers previously unstudied.
Caleb Gemmell: judah distance sooner rather pattern ization process as we've tried to address this with the first month our global generator will show which I would highly recommend you check out um.
Caleb Gemmell: But yeah so we're kind of looking at indirect detection study.
Caleb Gemmell: But there's plenty more work to be done so i'd love to.
Caleb Gemmell: talk to people about how to the best way to go about implementing this for future collider studies.
Caleb Gemmell: Thank you.
José Zurita: Thank you for the Nice talk we open the floor for questions, let me see someone that was named after start with an m Thank you so today we're helpless.
Suchita Kulkarni: I think michaels first.
Suchita Kulkarni: Okay sorry I didn't get a quick question for you.
Suchita Kulkarni: and see what.
Are you.
Suchita Kulkarni: don't see the number of different dimensions, all of the spectrum.
Caleb Gemmell: On so it has been studied and lattice for different nc values, you still get the same blue balls like these states, but they are relative mass compared to the confine.
Caleb Gemmell: themselves.
Does change.
Caleb Gemmell: So there was a nice paper that release.
Caleb Gemmell: I come in the author sorry within the last year that's done like a full study into the global mass spectrum for different in see values.
Caleb Gemmell: So I think that's why we referenced in our paper so.
Caleb Gemmell: check that out.
Thanks.
José Zurita: So much question.
Matt Strassler: I have a I have a comment on, can you go to the slide which shows the two different strategies for come so so.
Matt Strassler: There is a a a bias that you guys let's sneak in it's not in you know you're not trying to put it in directly but.
Matt Strassler: there's a way that you talk about the two different methods that you have i'm specifically referring to a slide later, where you show the the what you call the I guess the the Google plasma method.
Caleb Gemmell: Sorry turn referring to the.
Matt Strassler: slides and alternatives yeah right so so I mean you guys have have a have a bias that.
Matt Strassler: Basically, this is a preservative process and preservative QC should give you the chats and then this is the alternatives that we throw in for good measure, and I just want to make people understand that this is controversial that.
Matt Strassler: Although you haven't really drawn it in a way that explains why this picture to the left, might be right.
Matt Strassler: it's important to understand that at large and see the preservative method definitely breaks down.
Matt Strassler: And so we know that in in ordinary to see this is not an issue, because if NF is an order and see the strings that the flux tubes that you form break very rapidly.
Matt Strassler: And the alternative picture survives, but when you're dealing with pure glue and there's no flavors then there's a one of our MC squared suppression, which is a factor of 10 already in KC D.
Matt Strassler: Of the flux tube splitting right, and what that means is that, rather than preservative to CDs surviving pattern ization it may be totally we scramble.
Matt Strassler: And a methods such as what you have on the left is is one attempt to to make sense of that it did this is, it is this controversy, which is one of the reasons why this type of hybridization module has not been written before.
Caleb Gemmell: No, thank you for the comment um.
Caleb Gemmell: But I just want to so without addressing it in this method is that not.
Caleb Gemmell: kind of a lie, I do agree that there is this bias, and this is added, this is a sort of secondary on interpretation that we've included.
Caleb Gemmell: But isn't that also addressing the.
Caleb Gemmell: model that you're talking about, but the.
Matt Strassler: It what what i'm saying is that there's a way in which is i'm seeing this in the Community, a little bit that people are thinking of the perturbing the alternative alternative as the base case.
Matt Strassler: And what I want to emphasize is in terms of what we actually know as theorists they're equally good, and you can make an argument against that case if.
Matt Strassler: people understand the controversy here and that, therefore, they should use both of these with equal weight.
Caleb Gemmell: Okay, no that's definitely something thanks for pointing out and i'll be better at sort of trying to picture that way in the future, thank you.
José Zurita: Okay, we think collagen and of course I remind you all that you're going to continue the discussion see my troubles, but now we have to move to our next speaker of things color again and Alessandro can you share your screen, please.
Alessandro Morandini: Yes, and you're.
Alessandro Morandini: perfect and now you should also see it full screen.
José Zurita: Yes, kind of a moving one one slide for one one by one.
José Zurita: Okay, yes fantastic, for the first slide.
José Zurita: Now, no problem, please, please go ahead, sorry for making this point.
Alessandro Morandini: No, no worries, so thank you, Sir good the organizers i'm very happy to be here i'm very happy to present this paper but recent don't, together with the years with your the a few minutes ago.
Alessandro Morandini: Felix and inhaler and this paper is about searching for our traditional vc, which in itself is already pretty peculiar because usually people look for that matter, a DC.
Alessandro Morandini: So how are time sure, so let us get started from from this workshop, we have a certainly understood that it seems very powerful of internal.
Alessandro Morandini: University and Center of mass energy and also very versatile there are different experiments we print the factors that look for different signatures.
Alessandro Morandini: So there is a lot that etc can see, and this makes good to see the perfect tool in order to look for that matter.
Alessandro Morandini: On the other end their metrics are strong motivation dramatic instrument physics and, in the sense there mater can tell me see what to look for and this has led to a beautiful relationship between elysee physics and a matter of when when ology.
Alessandro Morandini: Like many relationship also this one has some issues.
Alessandro Morandini: Especially when it comes to will it be by these are don't mean that.
Alessandro Morandini: There aren't worried well motivated or matter models that lead to long give particle signatures, of course, there are we've seen them in.
Alessandro Morandini: The session what they mean by that is that we if we make simple observation, there is a link between the seizure metrical layer
Alessandro Morandini: And you have a rate of the electric scale, this means that possibly interactions and bi directional for all the stalker will not remain the case, the case there are effective adela to escape me to microscopic Hillary and there's normally particle signatures.
Alessandro Morandini: Then it will be amazing if this thing interactions the same the case we're the ones, leading to the dramatic productions.
Alessandro Morandini: Unfortunately, that cannot be the case, because if the case is the case where the ones responsible for that we will then overproduce doesn't matter, so we don't want that.
Alessandro Morandini: But then, not all is lost, because it can be the case.
Alessandro Morandini: that yes, these the case are effective and they produce something we cosmological consequences, but this stuff is just not a matter so if you think about producing something very light the best as far as radiation, you might produce.
Alessandro Morandini: A darker and you should be the case, and these as a cosmological consequence which you showed a shift in the effective neutrino number, which is something that you can measure.
Alessandro Morandini: And these particularly important is parameter, because it will be well measured by future receive the experiment so Cindy as for, so to say, as a target sensitivity of zero dot zero free, which is reserved instance our reference value.
Alessandro Morandini: And I spent about director is that you don't need very complicated models in order to produce their method and the scene is actually true in order to produce darker ideation so.
Alessandro Morandini: We want the case so we want a particle decaying and the particle that is catering, to which is our definition and then you particle content will be the spark mathematical meet.
Alessandro Morandini: And doctrine ation guy so the mathematical me as it is above article he needs to be prepared with the standard model in the universe, it is charged on a similar model and increasingly can also have a reverse structure.
Alessandro Morandini: But for what concern the stock, the only copy that the best to the standard model lactose is just the Lego robotics with all entries equal to each other.
Alessandro Morandini: In particular, this is freezing production getting hate.
Alessandro Morandini: So the Capri needs to be rather small so that's guys never an equilibrium in the early universe so discovering Why would die from this more than 10 to the minus 610 to the minus seven.
Alessandro Morandini: Depending on the mass of the barn particle So this is the quality picture we have a bar in the game to guard condition and our current issue can could relate to that and effective.
Alessandro Morandini: Then we actually have a specific value of that and effective that we're looking for some you actually want a quantitative calculation of that.
Alessandro Morandini: And then, an effective again, please, nothing else than the ratio between some additional energy density and the reference where you, which is here the.
Alessandro Morandini: Additional energy density of our master list neutrino So if you think about adding another muscles neutrino fourth neutrino you that an effective is equal to one.
Alessandro Morandini: But maybe most importantly year, you can see, on the right hand side of the picture, one that then affecting is proportional to this prompt is that.
Alessandro Morandini: Is that is nothing else that we can moving or additional energy density for people who are familiar with our metric calibration, this is not an analogous to the moving.
Alessandro Morandini: Number density of their method just, for there are additional energy density So you see which i'm sure that this number is 2pm to be to be power for fourth.
Alessandro Morandini: And, just like in America creation we can drive the movie number density using boltzmann equation, we can also there is the moving or additional energy dense be using the multiple integration.
Alessandro Morandini: This is something that is rather well known for infrared for that show now have their manager, and so this would be pretty easy you just use the results.
Alessandro Morandini: Absolutely, we want to rely rely on some assumption for the order that's the assumption that the parent particle the case were completely you.
Alessandro Morandini: Know relativistic so in our case will not use the Maxwell boltzmann approximation most, most importantly, something that you can do for their method or you cannot actually do here is.
Alessandro Morandini: neglect the inverse the case, so the scattering of the darker nation with something model particles producing buff particles is usually negligible, in this case it is not negligible.
Alessandro Morandini: So we need to relax these assumption, but this is pretty straightforward, we still get the pressure equation to solve, which is which from free.
Alessandro Morandini: And it's just a differential equation that depends on an integral that's.
Alessandro Morandini: integral if you see there that depends on the temperature of the standard model, the temperature or with our sector and spins of the parent particle and daughter particle doctrine ation.
Alessandro Morandini: Of course, also year, there are some some simplification that we need to do, but in principle is something that we can.
Alessandro Morandini: So this is the format calculation, this is how you do the formula completion of death and effective and finally we get the relevant parameter space of interest for us.
Alessandro Morandini: So this is essentially the ultimate effective versus the true relevant parameters, you know our model, which are the mass of the barn particle and lifetime of the barn particle.
Alessandro Morandini: And from a cosmological perspective, broadly speaking, we could say that everything is plot here is rather interesting.
Alessandro Morandini: And now, if I come to the adc interesting bbls what you're looking at right now is the Left taxes.
Alessandro Morandini: The y axis, and you can see that if you want to probe all of this parameter space, you can not only rely on long lived signatures for signatures much you will actually have to use both of them.
Alessandro Morandini: So we actually need to study both of them, so we started with the prompt ones from the bronx.
Alessandro Morandini: If you looked at the interaction that we that I was showing earlier, this is pretty similar to a select the model so actually we can just request susie searches for slept on so we see.
Alessandro Morandini: This network that we're interested in is the electron plus missing transfer section and and and we do this for both the Atlas and cms searches and.
Alessandro Morandini: The way that we implement the sensitivity of the searches for longer life them so like for something that stopped competing prompt.
Alessandro Morandini: Is we work at the level of the cast on the input parameters and the particular you know I mentioned the transparency parameter where.
Alessandro Morandini: The cast the former customer acquisition cms are different so for us, we advocate on the zero, which is the less than we should be less than three times.
Alessandro Morandini: The better resolution which essentially means in this range of pity nita for galactose that zero should be less than 0.1 millimeter.
Alessandro Morandini: Well cms mention circuit, which is the zero less than 0.5 millimeter so if we take these cuts out mean value, it means that cms should be in principle, able to promise slightly longer lifespans.
Alessandro Morandini: From a simulation point of view we don't actually need to simulate all the lifetimes we can just submit one line done Eric asked.
Alessandro Morandini: leave it there and we check that this works pretty well.
Alessandro Morandini: For along with particle signals research is the recasting is much easier because when you do along the particle search usually buildings are there any variety, that as a function of the mass of the parent bar people.
Alessandro Morandini: and its lifetime so it's rather easy and the relevance of sheer is the one for this place leptons.
Alessandro Morandini: The knee surgery three provided a screw up production processions bunch of the muscle, the bank parkman in the lifetime.
Alessandro Morandini: Steel year, this is pretty well known, because on the translating parameter are different for us and cms, which means that in the next block, you will actually see that Alice.
Alessandro Morandini: props slightly Roger lifetimes can cms slightly shorter lifetimes their custom years pretty easy it gets a little trickier in different single flavor scenario, but this is not so relevant for this presentation.
Alessandro Morandini: So, finally, we come to the final blot is this seem relevant parameter space that we were seeing earlier, but now it's super impose the sequel strains.
Alessandro Morandini: And you can see that the reason I think the mentality between the displaced searches and the Crown searches, you can see that, in general, others in cms probably slightly different parameters piece.
Alessandro Morandini: Let me also say that you see something that looks like a safe corner on the bottom left, so it is actually not that safe, because if you remember.
Alessandro Morandini: The lab Center mass energies tron renovated gv so basically everything below 104 GB should be excluded by that whatever everything on there I should be still available.
Alessandro Morandini: So, if you remember our target cosmological value we have attracted sensitivity of the open feel free and we have also complementarity between elysee and cosmological thing.
Alessandro Morandini: But we actually don't know whether cnbc for with just the constraints, maybe if we love for something let's see that it says, an excess of was your point 06.
Alessandro Morandini: Then it will mean that this scenario for the production of darker nation, so the doctrine ation produced by infrared case he's already screwed by a combination of prompt and this place searches so very soon.
Alessandro Morandini: So this is where you're at on coming to the conclusions we have improved the calculation of that time, effective, so we are improve the operational that then effective for their condition produce via the case, the interest parameter space that we find laser the boundary between.
Alessandro Morandini: chrome searches and lonely particle signatures, and there is an entrepreneur mentality between them and also general offices cms at different cast, and so they can probably slightly different brands or spaces and that's basically it Thank you.
José Zurita: Thank you very much, have a nice talk and any questions in the flow.
José Zurita: So if If not, I have one that is possibly coming from experience and not from knowledge.
José Zurita: So did you look into the search is for this a billion tracks, so you will say, well, they don't apply, but you have something that is like a heavy letter that goes to elect an amazing energy.
José Zurita: And if, for some reason, your letter is soft and get lost it or we could just go to Beijing energy.
José Zurita: And I recall, in a similar process for a long time ago, so there were other searches is a bit interact searches was able to play some constraints of the display slept on search could not cover, I will be happy to point your paper, so I just don't know if you.
José Zurita: Yes, it.
Alessandro Morandini: depends actually something that we consider it.
Alessandro Morandini: And i'm not sure it's the same favorite Barrow you're thinking about I remember one by Laurel operates on or it's where the cinder.
Alessandro Morandini: Still freezing production, that is, it was many UV in the case they actually do exactly the recasting the dimension that we consider that we didn't do the full analysis we.
Alessandro Morandini: For some reason for that it would not put so it will be not stronger than what we already have, so it will probably be not complimentary to war.
Alessandro Morandini: But, in principle, like if anything like you're thinking about this particular part to the parameters.
José Zurita: fi signals yeah something around, maybe even the higher part, so I, I think it was typically a competitor of loud, or they were more or less around the same time, we will start to recast in the things in it say up front, the models.
José Zurita: And somehow he's a painter I was helping you when somehow this later no sensitivity right, it will be really the upper part of your plot so maybe will be no relevant.
Alessandro Morandini: yeah and I.
José Zurita: Only checking if you if you if you check this, but that was.
Alessandro Morandini: Also finkel so the muscle department particle would imply that sure laptop the end will be pretty not soft.
See.
José Zurita: If you can also use it if it goes on a large angle, as well, but the it.
José Zurita: A.
José Zurita: title that affect social.
Alessandro Morandini: Yes, well yeah it's worth pointing out thanks.
José Zurita: Okay, thank you for this, since I see no other questions we think Alessandra again and we move to our last speaker of the day.
José Zurita: So linkedin if you want to share your screen.
Lingfeng Li: you'll be able to see the.
José Zurita: slide yes, yes.
Lingfeng Li: Okay, great so I can just get started.
Lingfeng Li: please everyone, are you saying.
Lingfeng Li: Quote dinner or lunch or like state simply go to sleep so first of all thank the organizers allowing me to present our previous work basically everything in wrapped in this paper with cgi Chang and in ios and the only also to previous words of this collaboration.
Lingfeng Li: So, since this is that that's that shower section and I don't need to explain Okay, why we should have that shower stuff but he is dead talking a little bit about.
Lingfeng Li: turn this if choices or portals, so this is like the cartoon that's the cast it from the original one just for our purpose.
Lingfeng Li: So here the like say right here is the standard model second so we know everything pretty well right here, and the here is the disconnected hidden Valley.
Lingfeng Li: And the reason why we haven't seen that is because the BAT like say the barrier well like say the small coupling between the hidden Valley.
Lingfeng Li: And the standard model so therefore like say in general with expect like some small decay with will display a signal that's why we're here, along with.
Lingfeng Li: particle workshop, so there are like say multiple ways to like say suppress the coupling and one of the typical way is to like call for the.
Lingfeng Li: irrelevant portal, which is less studied, or at least not as clear as other portals previously discussed so here one of the like say we just need to write down the portal couplings Okay, and the.
Lingfeng Li: Instead of calling for a epsilon, for example, a typical for duck duck full time it's introduced by like say symmetry also will actually one effect.
Lingfeng Li: Now the company gets suppressed by the UV scale Lambda squared and, hopefully, on top of that is like an actual week scale and forth logical reason and the many other.
Lingfeng Li: Like theoretical argument, for example, we expecting TV scale in physics, then, if we set this to TV scale This is like a good point to start and logically it provides a reasonable good.
Lingfeng Li: signal raise and also displays signal and that there are certainly other possibilities okay just pure hicks and other portals, but in this case we rely on these two operators.
Lingfeng Li: In terms of different approach, because now you introduce the UV scale right here, so you can go to energy friendship just go to the connecting will portal particles directly okay by official colliders.
Lingfeng Li: Or you can look at intensive different year instead there's always some signal if you accept to eventually have some light degree of freedom.
Lingfeng Li: And the in this work, or like say the major topic of this what were the like take.
Lingfeng Li: Another key point is if this hierarchy between the Lambda UV and a lot of weight is not extreme.
Lingfeng Li: For example, TV versus few hundred GB, then the hicks was the portal Tennessee meditate easily be important and they introduced very interesting he rfc or future collider.
Lingfeng Li: That philology so let's talk about that that that pions Okay, so this is probably not the hardest model in the world in general, we just need this point in direction, so we introduce first of all that corks will do that proverbial.
Lingfeng Li: We first introduced this light standard model single it so we introduced in a vector like matters so you don't need to worry about it's hypercharged so you can set it to zero, so they are completely standard model singlet so like everything can be as live as less than Ruby.
Lingfeng Li: And some heavy standard model w mediators, because we need to have the higgs portal coupling which is needed for many different theoretical arguments, but let's set this right here so.
Lingfeng Li: Because we need that pines we need more than one flavor so these why, how can you tell us who can amass matrix is in general n by n matrices.
Lingfeng Li: And the key point is the queue must be a greater than TV, because we have just mentioned, the scale right here should be better about TV.
Lingfeng Li: So, once this heavy particles, because in low energy description what eft they are not needed, so we just integrate them out and the left with this year to operate eft a lot rajan.
Lingfeng Li: left with dimension six is equal, a couple names and there's such leading one dimension five export coupling and the.
Lingfeng Li: floor no flavor equals, or like say greater than one day we left with some pseudo novel goes to impose ons or legacy pioneers.
Lingfeng Li: For flavor equals one we go to a specific point we just covered by the previous study.
Lingfeng Li: Which i'm not on the cover right here so here's the cartoon up this that spectrum, so this is the standard model blob we love everything right here.
Lingfeng Li: And across the line is like a non necessarily evil twin of our to see the sector or hydrogen hydrogen sector.
Lingfeng Li: We have TV scale mediators that's a doublet so potentially they can be discovered that llc but the signal could be messy.
Lingfeng Li: And the light single at once, and that they're mixing Okay, they picked up some interaction or portal coupling to the Center model.
Lingfeng Li: And once we teach them that force They confine themselves into that pie and and many other ones, so in the simplest case.
Lingfeng Li: To flavor and we have three clients, it turns out the phonology or like say the hardware dark harder, this is a little bit complicated already a lot of rich.
Lingfeng Li: phenomena to to discover, for example in the city conserving limit, they can carry an arbitrary see if you face in this case, but if the city is conserving.
Lingfeng Li: Then the rearrange themselves into city and state somehow like the standard model T shirt and a long in the city concerning limit that they are just CDI in states.
Lingfeng Li: And in this case because we don't introduce an extra.
Lingfeng Li: You want dark Okay, in this case, everything is just standard model, plus a toxicity so there's no reason to use the pipe plus pi minuses.
Lingfeng Li: Is that we use the poly index of the one in three and and the two, of course, no in this case, one and 3.1 days to change the as the portal, because they form a zero minus plus so they see those Gala or sarcastically.
Lingfeng Li: You can think about them as the composite excellent like particle like particle or we just call them Alp you'd like a scenario with this effective large Alp take a constant, which is like a.
Lingfeng Li: Like a dimension trick so because the original complaint is like the dimensional six and Riley boils down to that vision five.
Lingfeng Li: With one one single parameter, so this is a pseudo UV scale which is typically around one PV view thinking about like a TV scale n squared.
Lingfeng Li: And the MTV still that hard ones, and such that find a diagram can either describe the zoom portal that, by the way, if you look at this way was the portal that pie in production, so this is quite busy anomalous decay to that shower.
Lingfeng Li: pitino, on the other hand, is forming zero minus minus leads that scaling in this case and mixed with the CP even hex So this is the effective coupling or effective mixing angle, which is much smaller or less relevant than the PV scale capacity of the.
Lingfeng Li: So, first of all like the decay, we restarted both cases like because for for more successful phrenology you need to know the signal and the decay right how they how they get to us and how they decay, so we did elaborate.
Lingfeng Li: math calculations okay and make sure that the result is like the good for generic flavor diagonally i'll be couplings, so this is certainly an extension, so we developed from this paper.
Lingfeng Li: Just make sure that the coupling or that decay branching ratios we use or elective we propose can be applied to certain or if.
Lingfeng Li: there's like a couple into standard model for Indians and that, because we have a Z photo in this case, so the coupling to uds in it seems like it goes to one minus one minus one.
Lingfeng Li: kind of feature, rather than a flavor flavor universal 111 type of coupling so there's like a lot of interesting features and it is a busy plot, but the key.
Lingfeng Li: For for module is below one review or less than eight a prime mass the time you on.
Lingfeng Li: This dominating so, which is a good use of technology and even about one GB you can see, above 1% branching ratio is possible and about one one GB when the faith based is fully open.
Lingfeng Li: Then you may go through, for example, row hi type of the case and, naturally, with like three standard model pseudo scalable most wishes by challenging in terms of margin.
Lingfeng Li: So.
Lingfeng Li: There are a lot of okay so from logically, there are a lot of open open cracks Okay, we can look at okay.
Lingfeng Li: This is lonely protocol once they can generate it they provided striking signals, one of the ways we're likes a common ways to look at for them is like through the FCC or the flavor sector, because at one look.
Lingfeng Li: Even though, in this case you have minimal flavor violation this to generate through these box diagrams or penguin like diagrams and that.
Lingfeng Li: Through some for firm yen interaction, you can write down eventually through factorization you'll come up with this typical branching ratio of be two K two K or K star.
Lingfeng Li: And an extra extra Alp like that client, in this case the de pollo cases dominating and the branching ratio typically for a TV but sorry for PV scale the cake house then would be for the 10 to the minus page, and we also notice that this is different from a general like.
Lingfeng Li: Elementary or case because it's necessarily introduce this drop box diagram to describe the decay, so there will be a factor of three suppression compared to the previous calculations, but anyways PD scale, in this case is doable if.
Lingfeng Li: That happens, along with, so we compare like say a lot of fun logical works, for example, from out CB and also the previous on like lead steel leading charm limits and the cms.
Lingfeng Li: scouting find you on scouting data limits and that they are compatible with each other and the importance actually changes rapidly once you go to different.
Lingfeng Li: masters, but, roughly speaking they're in the same ballpark probing PV scale FA already and they're reaching okay this water likes a multi PT range for future experiments.
Lingfeng Li: And simultaneously, we can discuss the chaos okay fall I like totally similar procedure, for example, just pay, plus the K two pi plus with some invisible stuff.
Lingfeng Li: So in this case, following the nfl the over to, for example, you can also probe FA around peavy's a scenario wish the details given in.
Lingfeng Li: You know paper.
Lingfeng Li: So let's move on, so this is this is Doc shower and the because you have a docu CD and we have anomalous Z.
Lingfeng Li: The case or equivalent the hex the case those either case, because you have more Aziz produce llc so we expect as the portal is more relevant in this case so i'm using the same plot l same.
Lingfeng Li: cartoon that dylan was using in the previous talk the ideas very simple based on this emerging jet.
Lingfeng Li: And spirit, so you can produce, for example, a dime you and displays right, this is like say downstream, so if.
Lingfeng Li: The case in the view on Chamber or like the you have a very good vertex system, then you can split count them and Okay, you have a shopkeeper reconstructed compared with the background, then you get the limits.
Lingfeng Li: So we've got about a minute left okay cool.
Lingfeng Li: yeah i'm about to wrap.
Lingfeng Li: up, so this is an example of.
Lingfeng Li: Like what you get from fcp, so this is what we get from the data.
Lingfeng Li: Coming from this paper and that the dash band is when we get from the average background we're like say using this using an alternative method assuming some unknown systematics of this.
Lingfeng Li: Of the detector and they agreed pretty well so using two different methods so with this confidence we extrapolate the limit.
Lingfeng Li: To like say the end of run through them not to be at the end of each other seamlessly and you can see that most like 10 to the minus seven and almost zero ck branching Richard can be pro.
Lingfeng Li: And that the two peaks at simply introduced because of the flavor structure or like see the rich different pi indicate with ratios.
Lingfeng Li: Which is just a random benchmark we pick up right here and there are two displays for that, so you can looking for multiple.
Lingfeng Li: display versus you know tenuously but here it's like the current stage out CB they're still limited by the law protects efficiency, but if this can be improved, and this will take the lead at the low lifetime regime.
Lingfeng Li: and other a lot of like the theoretical arguments, right here, but let's make a quick conclusion that probing.
Lingfeng Li: If you send us a unitary that probing multiple TV skill or likes a multi PV scale you with this method is Bible okay with direct that shower detection.
Lingfeng Li: And we also take a simple look just this is super preliminary have to apologize, the limits coming from the CNS data scouting.
Lingfeng Li: paper, the same data, this is what we have with the same benchmark and 6650 MTV that power sorry that pain and that, at the current stage they are pretty much similar and we did.
Lingfeng Li: Some brute force extrapolation vitality, but hopefully we can move on from this Okay, but we are still discussing that certainly, this is a non trivial job.
Lingfeng Li: Reading all the time of just stop by this page, you can read the Okay, there are a lot of open fields will be discussed, for example, cosmology of this could be very warlike say talk about the turn of the for those but i'll just stop here and waiting for questions.
José Zurita: Okay, since you will find an indie we open the floor for.
José Zurita: Some final question for today.
José Zurita: So while we wait for the avalanche of questions, I just wanted to know something, because you say these things can be easily lonely, but they also mean that they can be easily put on so he said any theoretical ingredients can cost.
Lingfeng Li: An ice.
José Zurita: bath arrange or it's really a free parameter lifetime.
Lingfeng Li: Okay yeah so this, this is a very nice question um, so I think this is like a little bit okay philosophy driven.
Lingfeng Li: So, because.
Lingfeng Li: In this paper we focusing on the portal were like say hicks portal that shower which means they are necessarily generated from the hicks was the exotic behave, which is a nice argument for either C or future.
Lingfeng Li: hex Z batteries and, if so, and it because you need to produce that shower let's assume that show is a paradigm.
Lingfeng Li: Then the lifetime is literally limited or sorry the mass of these are hard on this limited Okay, they cannot be much heavier than a few GB otherwise you have likely to be the case so So if you just look at the the general case, if you put in different.
Lingfeng Li: Like say TV scale.
Lingfeng Li: Up scale right here, and the.
Lingfeng Li: range run the empire from zero to 2010 GB, which is, I think the most interesting g.
Lingfeng Li: You typically get the lifetime of one millimeter or at least point one millimeter so the starting to be a long live, so this is paid by piling up the Center so that that Hydra mask ios electroweak scale and the the Nam, which is certainly limited.
Lingfeng Li: By one TV.
Lingfeng Li: What TV scale, then you get a longer article if they are heavier then of course the thing to change but that's what we have in our mind.
José Zurita: Now, I think.
José Zurita: If we don't have any money to get essentially favoring a dealership without having to think too much about it.
José Zurita: So let me see if there any other questions from the remaining 22 participants, so these not been the case, I want to close today have been a really exciting day and a bit of a monotonic session, but I hope you'll enjoy it and.
José Zurita: I hope to see all of you tomorrow at 2pm okay bye bye Have a nice.
José Zurita: afternoon evening yeah.
James Beacham (he/him): let's talk thanks everybody.
José Zurita: bye.
Juliette Alimena: Thanks bye.
Thanks.