Matthew Citron: So our first speaker is from fazer i'm pretty are you there.
Jordi Sabater: yeah i'm here can you hear me.
Matthew Citron: Yes, Okay, so if you can predict yes.
Jordi Sabater: You should be able to see my slides now right.
yeah.
Jordi Sabater: I should be able to see me now as well.
Jordi Sabater: Okay, all right, should I start.
Matthew Citron: Sure, thank you.
Jordi Sabater: yeah okay.
Jordi Sabater: yeah so hi everyone i'm dirty and I will be talking about the titanium physics you knows the came to do photo and events with a face or upgrade to shower.
Jordi Sabater: So, as you may know, on us Carla already mentioned in this first logged in the first day of the workshop they mean the thickness of the lsc last time momentum particles in the transverse plane.
Jordi Sabater: And therefore, this alerts for cross section is not being used by the some of the current detectors so, for example, for an integrated integrated luminosity of 150 in offense to learn, we have around the 2017 produce neutral pions.
Jordi Sabater: And so therefore phasers located about 480 meters downstream, not the address interaction point and about 1% of these bye bye CEOs are within the vector acceptance of facial.
Jordi Sabater: feature is that the four articles are tend to be very coordinated so one typical process that you can have this interaction, then you you produce.
Jordi Sabater: A lightness and that indicates internally particle then this long list bicycle Charles or they have hundreds of meters and then, in the case inside the detector volume so, for example, typical DK channels can be I like deposit on pairs.
Jordi Sabater: And the opening angle of these electron positron is, if you take a typical values for the Masters on energies of these lovely Friday goes.
Jordi Sabater: You have seen that the opening angle can be of founders of mega radiance which That means that, which means that they're after one meter there said very soon, is about 100 micro so you have to have good posture resolution to be able to resolve the two particles.
Jordi Sabater: um so typical when you can have in the in the in the face.
Jordi Sabater: detector is, for example, so here what a show.
Jordi Sabater: I sketch of the of the covered so the star corresponds to the address interaction points so you can have a PP coalition here and then pushing that I like mess around I said before, and then you can take a into a folder.
Jordi Sabater: That folder or there, plus two processes so you can have is a proton ravi ravi at North bay.
Jordi Sabater: Therefore don't or even the dark for them being being produced that there are this highly scattering then these are all done would travel through the elysee facility and then until it reaches facer and the physical location and then, in the case we seen the detector volume.
Jordi Sabater: So this is what this is the kind of signal we expect, so the guide for them to gain within the detective volume into, for example, a plus or minus.
Jordi Sabater: And then, thanks to the magnet and the tracker station that we have we can actually resolve the two electrons so we have two tracks in our trackers and then I got to meet during their positive in our in in at the end of the either detector.
Jordi Sabater: However, we can also have actually like particles produced or the interaction points so, for example, you can have the dimensions digging into actions and chaos, for example, or K and sticking to actions on pions.
Jordi Sabater: And then these disciples would travel through the elysee facility and again and again to the face or volume.
Jordi Sabater: An interesting production mechanism is actually producing a photon in the address interaction point then these photons travels through the.
Jordi Sabater: Through the cavern and in the hits and the stick metal block 343.5 meters metal block which we call them and then in this interaction, which is called a pre kickoff we can actually produce also accidents that then and travel through the detector and then decay.
Jordi Sabater: And a typical decay of these actions each into two photons and the problem is that with the current detector we cannot be solved this to a call limited photos because in front of the character, we have right now, our current.
Jordi Sabater: A pre shower which consists of two layers of simulator and two layers of constant so there's no way you can distinguish between photons that are separated by orders of 100 microns.
Jordi Sabater: Therefore, our plan is to upgrade the the shower and there's a three fold return for this, the first one is, we want to redirect macro investor will take this day for don't signal.
Jordi Sabater: The second one is to distinguish between since we can distinguish between the two photons we can actually if we see a signal in the future, we could actually characterize the new physics, you know.
Jordi Sabater: Because we were able to to to resolve these two photons and the third one, is that we can actually explore more exotic scenarios, where we have multiple folders in the final state so.
Jordi Sabater: You can find models that then where the final state consists of three to four photons so we could actually be able to now have sensitivity, the smallest as well.
Jordi Sabater: So this is the the plan, so the, this is the shower you have now, so the new pitch I will will will be style installed in the in the in the same place for their space for for this upgrade a shower I will be composed of tanks and layers and silicon to have high special resolution.
Jordi Sabater: And the band is to be installed by the for the illuminati really see face, so how the signals we change with what we have now so.
Jordi Sabater: We will have the out decaying within detector volume and now we have like.
Jordi Sabater: Some showers some pre showers already in the in the sub upgraded the shower and then again the the.
Jordi Sabater: The energy deposit in the parameter.
Jordi Sabater: And this is the nominal layout we have right now, so it consists of six six layers of Thompson and then into revealed with layers of silicon detector so this debris showers is about 200 times 201.
Jordi Sabater: millimeter squared and the silicon planes are made out of a hectare no pictures of 65 micrometers sites.
Jordi Sabater: And then the tungsten, which is the violet one on the picture on the left.
Jordi Sabater: It is one of the latest one religion length, which amounts up to six or eight reduction length in total, and this means that the probability of the photon converting into an a plus or minus pair is above 99% with this thickness.
Jordi Sabater: On the right hand side you can be you can see, one of the low energetic for them being shot at the Center of the hour.
Jordi Sabater: So, how does the M at an event like this look like, so what is on the left is a heat map of the X axis correspond to X axis of the of the new P shower in micrometres on the y axis.
Jordi Sabater: To the new pre showering micrometres as well, so here too short to photons have to teach we're sure that they.
Jordi Sabater: Are they are the shower with a separation of 500 microns So you can see that we can with the director resolve these two photons and and the director senior.
Jordi Sabater: So we actually completed the efficiency of.
Jordi Sabater: reconstructing these two forms of separate photons, so this is showing the bottom there right, so the way actually show the efficiency and the exactly show the distance between the photons.
Jordi Sabater: So, for example, if we look at the so the blue line response to the machine learning approach and then the we build a simple reconstruction algorithm.
Jordi Sabater: to identify these two photons, and this is shown in orange and you can see that for separation so both.
Jordi Sabater: Say 250 micrometres we get efficiency sorry about above 80% and this this this lines correspond to two photons of have one TV.
Jordi Sabater: Everything we are actually looking at this one is because we will also have neutrinos that penetrates into the shower and generate a shower that could figure seen also This is something we are also studying also work in progress.
Jordi Sabater: And the MICE my final slide is just a sensitivity plot that we obtained.
Jordi Sabater: For this kind of models, where you have like measurements to gain to access and all their life methods were showing the y axis is the coupling on the X axis I show the.
Jordi Sabater: The the mastering the most of the action in gv and then the different lines, so the blue line response to an integrated luminosity or three months October and.
Jordi Sabater: Then the red line Chris wants to answer scenario where only part of the run three data was recorded, which corresponds to 9090 minutes, part two, and then the bloodlines correspond to.
Jordi Sabater: take into account deficiencies of reconstructing photons have of 200 to 200 micrometres separations we handed micrometres etc.
Jordi Sabater: So you can see, actually, so if we are able to reconstruct photons we separate off of 200 micrometres you can see that we can actually access to our original bass bass, I really was only in 90 in the third one.
Jordi Sabater: there's no color via the experiments showing in Gray, and I have to say that there's a lot of room for improvement, also in this in this plot, because this was also only done we have simple reconstruction algorithm not.
Jordi Sabater: So there's a lot of improvement to to improve in this in this kind of algorithm and an improvement, a sensitivity and that's everything had thanks.
Matthew Citron: Very much and.
Matthew Citron: Any.
Matthew Citron: Questions or comments.
Matthew Citron: If not.
Matthew Citron: I see in my office.
Michael Albrow: yeah Thank you that's interesting developer I just went on this particular plot here.
Michael Albrow: You should presumably block out the regional page zero mass and the H and H prime mass because they go to two cameras.
Michael Albrow: And they'll come from the from the veto counter in front of the beginning and from so you won't have sensitivity around those masses right the pi zero eater background.
Jordi Sabater: Can you repeat the argument, please.
Michael Albrow: And there will be pies zeros and eaters and age of PRIMES that decatur gamma gamma.
Jordi Sabater: Ray but.
Jordi Sabater: Actually, no, because in for or if they decay within the detector volume, it may be a background, but I don't think you can have by serious coming from the others interaction point and the cane actually because we have a.
Michael Albrow: Retail yeah sorry they weren't decay inside the volume, but you have a fee to count that they can be produced at the beginning of your pre shower.
Michael Albrow: dedicate I mean dedicate promptly right but but.
Michael Albrow: Unless you can show that the vertex is inside the cave volume well and not at a plate in the shower.
Jordi Sabater: hmm so so, how would these patents be produced again so.
Jordi Sabater: Coming from the from the Ad.
Jordi Sabater: Or you mean by by just interaction with the tungsten.
Michael Albrow: yeah I mean you have a lot of interactions in the chunks and absorbs up front from.
Jordi Sabater: But it's this will just contribute so you mean the two photons written the dance and I created some pions in the in the showers.
Michael Albrow: yeah pi zero.
can be created here.
Jordi Sabater: yeah.
Jordi Sabater: that's a good point.
Jordi Sabater: I think this, this will be part of what it's part of the singer right because they're produced by the two photons coming from the.
Michael Albrow: signal yeah I mean if you if you reconstructed matter what a mass resolution of your gamma gamma.
Michael Albrow: Is but yeah then then you'd probably not be sensitive around the pipe zero mass and the HR and a prime mass because.
Michael Albrow: They will be, you know that there will be plenty of those from showers upstream.
Jordi Sabater: i'm going to share what I will have.
Jordi Sabater: I will have to think about it.
Jordi Sabater: Well, maybe that's the case yeah yeah Okay, thank you.
Jordi Sabater: So this is definitely not taking into account in this plot.
Matthew Citron: I see Albert as his first.
Albert De Roeck: question for us, what do you think you will be able to install something that for me.
Albert De Roeck: I heard you saying the illuminati.
Albert De Roeck: still want to install something in roughly right.
Jordi Sabater: um.
Jordi Sabater: No, this is intended for the high luminosity let's see phase so.
Albert De Roeck: While you're still around those are reviewing the.
Albert De Roeck: High luminosity because we want to preserve food and that maybe so we're completely different.
Jordi Sabater: um I think the plan was at the beginning to have it for part of France, three but.
Jordi Sabater: I don't think this is feasible anymore, so I think it will repay inside the face are doing yeah.
Albert De Roeck: Okay yeah that's right without it will be bigger and things like that, because we have a much better.
Jordi Sabater: mm hmm.
Albert De Roeck: Okay.
Matthew Citron: very disciplined question what motivates them 19 verse 50 points.
Jordi Sabater: So this corresponding to one scenario when this was done like few, I think.
Jordi Sabater: Months ago.
Jordi Sabater: And there was a scenario where the shower will be upgraded at some point of run three so i'm not regarding the food brands luminosity 150 but part of it only 90.
Matthew Citron: Okay, but now.
Jordi Sabater: Nowadays yeah yeah, this is not.
Jordi Sabater: an option anymore I far as I understood.
Okay, thanks.
Matthew Citron: Okay, well, thank you very much for the very interesting talk looks like a very nice upgrade to fazer and I think we should move that into it and the status from plants of micro experiment thanks again.
David Vannerom: And Matthew can you hear me.
Matthew Citron: Yes.
David Vannerom: Can you try to share.
David Vannerom: That working.
Matthew Citron: yeah so we see it, your first.
David Vannerom: Presentation that's better yeah.
it's worth.
David Vannerom: All right.
David Vannerom: Yes, so i'm gonna.
David Vannerom: present a status of the American experiment at CERN and the plans for the coming months and years.
David Vannerom: So basically we're interested in the search for Articles with.
David Vannerom: A very low charge so basically the current landscape of known particles, is that they all have either.
David Vannerom: Zero electromagnetic charge like the foot on or unit or.
David Vannerom: Multiple of the electron charged plus minus one etc, or they have fractional charge but they're confined like quark so you can count really have those lonely free propagating particles, so the question we raised is is.
David Vannerom: Do we have in the universe free propagating long these articles with.
David Vannerom: an exotic charge in particular milliken is interested about the the the order of.
David Vannerom: hundreds or thousands of the charge, so there is this generic model.
David Vannerom: That uses the mechanism of kinetic mixing where you have an extra.
David Vannerom: A human group.
David Vannerom: and associated firm and fields that do not coupled to the standard model directly, but do you want prime mixes with the standard model hypercharged.
David Vannerom: and basically what you get is, you have a new firm yon that carries an effective electromagnetic charge, so you would be able to produce that particle in Australian like.
David Vannerom: phenomenology in pairs as is a little strange in in this in this diagram.
David Vannerom: So we've.
David Vannerom: built a demonstrator for the milliken.
David Vannerom: experiment, a couple of years ago for for that to data in the interim to in 2013.
David Vannerom: And, basically, the idea is to have large simulation.
David Vannerom: volume or at least distance seen by the particles producing in the at the cms interaction point that would fly up to the orange gallery where the detector is located, and these particles, so we didn't see.
David Vannerom: three layers for demonstrator of a simulator array.
David Vannerom: Hopefully ionizing the middle the material and and leaving there a very small.
David Vannerom: pulse, and so what you require is to have a coherent signal in each of the three layers.
David Vannerom: So that was the milken demonstrator which actually already hit the edge of the existing existing excluded region, as you can see, on these.
David Vannerom: limit, or at least constraint bloods for results for 20 2018 and under right here, you have a picture of the milken gallery above cms.
David Vannerom: Where the milken demonstrator was located and where we were we are currently building the next iteration of the demonstrator.
David Vannerom: Of the of the vector, which is actually made up to detectors So the idea is that now we're going to have a larger and improved bar that vector as we call it.
David Vannerom: which actually now has a wider coverage sweets four by four instead of two by three and it now has four layers because we learn from demonstrator that this was helping reduce the background significantly, but today is very sensitive large volume of simulation detector we are.
David Vannerom: adding a complimentary slab detector which is not to scale on the on the picture and that's important because it's actually much larger in coverage or acceptance it's made off also four layers of slabs which are actually 40 times 60 centimeters.
David Vannerom: Large so the the geometrical acceptance of the scientific theories much, much larger.
David Vannerom: Both these detectors are made of simulation volume, which is coupled to these.
David Vannerom: Pre amplifying pmt so the pmt are carrying.
David Vannerom: A printer fire board on them.
David Vannerom: So this is the expected sensitivity for the Room three, as well as for the hi Lucy Lucy with the given luminosity is there, so what you see is, you have the bar detector which targets, basically, the lowest.
David Vannerom: ionizing mcp so many charged particles and and the bar detector so covers the lower mass region as you, as you can see, on the on the bullets on Center and the slab the director, which has the advantage of having this larger geometrical or angular acceptance.
David Vannerom: helps us.
David Vannerom: gain in sensitivity for the dmca is that the more energy to detector which we can afford than to have a smaller seen volume beta beta particle so we're now building these two detectors in the gallery.
David Vannerom: In view of taking data in the in the in actually this year in 2022 so i'm going to show a couple of features of of the situation, so these are.
David Vannerom: The simulation seem to their bars so on the on the far edge of the picture you see the.
David Vannerom: Just the bar to which we attach a pmt and and make it light died so that there is no.
David Vannerom: Pollution from ambient light and.
David Vannerom: yeah basically that, and so this is what you get at the end so it's a taped bar with a pmt connected to it, so this this was done at ucsb and now the bars have been shipped to CERN so the bars are grouped in modules and supermodels and and basically it's all assembled in these.
David Vannerom: Large metal cage that we then get lower down to the to the gallery to be installed.
David Vannerom: And we've even had already have the dq setup for the bar detector in a gallery, which is basically now waiting for the detector itself, so we have ways to test the dq without like either with.
David Vannerom: bars from the previous detector or false generator and so on, so we have wasted as the dq and and.
David Vannerom: So basically now the status of the bar detector is that we have all bars.
David Vannerom: At CERN they're ready mountain and tested.
David Vannerom: And the mechanical structures that i've showed you the cage and supermodel structure is is ready, so we really just need to check again that the the the bars.
David Vannerom: haven't suffered for from the from the traveling and the shipments and then just assemble them in the in the structure and lower them to the gallery and then retest the deck with with the detector so, so this is very.
David Vannerom: good status for us now on to the slab detector we are currently in a process of mounting the simulator the PM fees on the simulator slab so we actually have four of them purse lab so that we can collect as much light.
David Vannerom: As we can, and so this is a these are pictures of our setup.
David Vannerom: At the point five, where we have our milliken lab on the surface, so you see how we have these.
David Vannerom: holes in the rapping to allow for the pmt to be connected, which is done in South central picture and then you see how it looks like after after it's done.
David Vannerom: So this is this is currently being done that's hearing and this labs will be assembled so on the dumper ID sketch is not actually how it looks like it what it looks like is essential picture, where you have the slabs assembled in these mechanical arm, which is soon to be machines.
David Vannerom: By Mohammed and Robert here.
David Vannerom: Right, so the state is is that we have all the slides and the mts here at CERN the pmt is have all been tested now, we just need just, we need to mount bmt slabs dentist dentist labs for light darkness and and.
David Vannerom: And and assembles labs intuitive mechanical structural just showed you and have everything down to the gallery.
David Vannerom: So the timeline is that construction as well, its way we have everything he returns it's just a matter of time and effort to assemble and finalize the testing.
David Vannerom: which we probably will probably take a couple of months, we first need to be able to take data, this year, probably around can of summer and we're very excited because this will allow us to significantly.
David Vannerom: increase the the explorer region in a search for me to church particles, so thank you very much for attention and and I think i'm done.
Matthew Citron: Thanks very much did he put some questions.
Matthew Citron: I guess I should apologize i'm at least partially responsible for that mess of cables you see there.
David Vannerom: Yes, okay they're not there anymore.
Matthew Citron: So I see Julia.
Juliette Alimena: yeah thanks for the Nice talk, I was just curious you say one of your last.
Juliette Alimena: In your next steps on the previous slide, the last thing to do is to test the deck and start running i'm just curious if the the deck needs it, is it the same as what you have for the the demonstrator do you need to do any work there to make it ready for the full thing.
David Vannerom: So detectors are really completely separated, like the run.
David Vannerom: independently and have each of them has their own to queue and digitize hers and like it's it's a it's really just.
David Vannerom: A different I mean the setup is the material in the 70s very similar but it's just another one that we need to set up so um.
yeah.
Juliette Alimena: Sorry, so it's another sort of copy of the same deck or other significant differences I.
David Vannerom: mean there are various.
David Vannerom: yeah there are differences in the way we're going to trigger.
David Vannerom: And because the the geometry of the director and the backgrounds won't be exactly the same um so yeah it's a different deck.
Juliette Alimena: Okay, thanks cool.
Matthew Citron: Okay let's see any other questions so thanks again, this is a very nice update on the status of silicon sure.
Matthew Citron: I think we now move to the nearly.
Matthew Citron: hey anyone else here that nearly I could look.
David Vannerom: yeah I can.
Jaehoon Yu: You still muted Daniela.
Daniele Barducci: So we apologize.
Daniele Barducci: muted automatically can you hear me now.
Yes.
Daniele Barducci: Okay, so it was my fault about the heads gate, let me start my share.
Daniele Barducci: So.
Daniele Barducci: not allowed to show screen.
Daniele Barducci: So I cannot share cream I did this morning actually book.
Juliette Alimena: Let me I can try to make you a Co host for your talk and maybe that fixes the problem.
Daniele Barducci: Wait.
Daniele Barducci: Actually, shared some slide this morning, so.
Daniele Barducci: So let's try again.
Daniele Barducci: No, it doesn't let me.
Daniele Barducci: Over system preference security and privacy to grant access, this is because I did a mock up great a lunchtime.
Daniele Barducci: Which is.
Matthew Citron: Nearly and I can share the slides.
Daniele Barducci: Oh, that would be nice if you can share the slides.
Daniele Barducci: And then I will I will I will tell you next slide sorry about this.
Matthew Citron: Okay that's that's great that's great.
Daniele Barducci: Perfect anyway so first of all thanks a lot for giving me this opportunity, so what I will be discussing there will be presenting some work which have been done with the.
Daniele Barducci: linear combination of disguise in various paper as a work in progress, and I will talk about drunkenly particle in some extension of the seesaw an AC some other So yes please next slide.
Daniele Barducci: Okay, so just a brief introduction, we all know that the neutrino mass require new physics beyond the standard model.
Daniele Barducci: And the simplest possibility is to add the right hand industry now so it's not that not a single, and you know total single it on the standard model.
Daniele Barducci: which have your interaction with the higgs boson and then my around the master which is allowed by gauge symmetry This allows to realize the lightness of the neutrino mass to the seesaw mechanism.
Daniele Barducci: So you will have like neutrino under heavy neutrino against state.
Daniele Barducci: What I will be interested in our right hand the neutrino grossly speaking of the electric scale where electric scale, I mean from 100 MTV to let's say 100 GB something similar, this is because i'm interested in collider searches.
Daniele Barducci: So there is a neat relation between the mass of the heavy nutrient or the mass of the line between now and the mixing angle between the active as 23 you know which is depicted.
Daniele Barducci: Here in this equation, and this implies a long lifetime for 103 you know which the case to a mixing without enough enough.
Daniele Barducci: So in this spot in the middle right of the span and you see that the given the the mass of the randomness we know the visa range where the random screen is stable on collider scale display the case displaced so far from the interaction points or respond.
Daniele Barducci: This model is something mixing also implies there's production cross section is suppressed, and this makes the fee so limited and I you see selena a really hard time with it was showing this blog from glendale of 2013 next slide please.
Daniele Barducci: So now, this name seesaw scaling can actually be modified in two different ways, the first way is to add more than one rather than we do so if you are more than one right handed neutrino the parameters that you have a parameter and the UK.
Daniele Barducci: And the master parameter becomes matrices so the relation between the diagonal.
Daniele Barducci: Messiah again state metrics for the light neutrino at the mathematics for the light neutrino becomes a relation between matrix this.
Daniele Barducci: This can be solved them for why new or the mixing gang well in functional this this combination of matrices.
Daniele Barducci: then put them point is that when you have more than one right hand in between, or there is an extra freedom.
Daniele Barducci: In that they have an amazing day of analyzing the system, and this is best in what is called the cars, I see bad, but i'm not gonna say shawn so it's an extra freedom given by your men by net and things and complex are talking about matrix.
Daniele Barducci: And the important point is that this matrix can have angels, which are complex numbers, so they can have a real an imaginary by.
Daniele Barducci: The minute you know, a part of this complex angle causes an exponential announcement of the mixing as is shown in the last.
Daniele Barducci: Next to the last equation on the slide this breaks them a relation between the mixing angle and the mass of the head neutrino and allows to span the baby, the whole parameter face of the right hand in the mass i'm mixing the angle of course incompatibility to the experimental.
Daniele Barducci: Next slide please.
Daniele Barducci: The same way in which you can actually modify the.
Daniele Barducci: model is to take the Nice model actually seriously So if you think this is the model, etc, there is no reason why you should think that this is the whole story.
Daniele Barducci: But in more completed you'll be theory, there will be some extra degrees of freedom and maybe a higher scale that complete the complete this model.
Daniele Barducci: So a low energy below this let's say this cup of Lambda you compartmentalize you're making around in the usual way like an effective field theory.
Daniele Barducci: Only that the fact that now this effective feel theories build out with a standard other fields under 100 or female, and this is known as then neutrino standard model effectively theory or in nature, through as the seesaw Porto.
Daniele Barducci: Anything is that the dimensional five there are only two new operators, besides the wind, but there is an operator connecting the right hand and what we know today he he razor and there is a dipole operator of the neutrino with the iPad charged field strikes next slide please.
Daniele Barducci: So this to have a racehorse I really need phenomenology first of all, clearly, they will give you the K modes for the big boat and the boat, so this means that this operators.
Daniele Barducci: This phenomenology by this operator will would be a primary target for future hicks factories, as the FCC he, for example, or the irc or or sex.
Daniele Barducci: sipc.
Daniele Barducci: So in this equation, you see the what's the rate the modified the rate of the external person, you know and it said nothing no nothing you know partial with.
Daniele Barducci: And in our work, we have to consider mainly the many different collider many future hicks factory running under his.
Daniele Barducci: direction so 240 GB where you maximize the production of the heats in association with the dead boson and the deadpool one where you have Tara said that option, with the order to the 12 said bows and produce it.
Daniele Barducci: Clearly, now the production cross section for the random three no it's not suppressed anymore by the mixing gangling the bottom left part of this.
Daniele Barducci: Of this panel you, you see the production cross section of the 1300 trees induced by they're all nh operator, so the better connected with the higgs boson and they said on the dipole operator, so this is not any more suppressed, but then again the suppressed by the scale.
Daniele Barducci: In this scenario, however dedicate still in use by mixing with the branching ratio in the final stages of one left on and two quarts or two items given by the branch ratio of the.so you normal branching ratio of randomness Reno and use a mix and please.
Daniele Barducci: But we have studied the possibility of.
Daniele Barducci: Random decay displace that we do in the future environment of a SEC machine we or IFC or the click machine, so you know this preliminary analysis, we have considered displaced.
Daniele Barducci: around in the game with the centimeters and one meter from their direction point so assuming a future geometry of the detector which is.
Daniele Barducci: This rain.
Daniele Barducci: Importantly, we had enough, you know, on my around a bicycle so from the decay yoga therapy run through you know you can actually produce the same sign dialect.
Daniele Barducci: So you can have to let them have the same sign this has a negligible background, because there is no standard model we also.
Daniele Barducci: know you reducible standard model background that gives this final state because it's embedded conserved in a standard model, so this is a reading channel and has from the previous slide, we can see has roughly 20% of the decay rate of the grand in between.
Daniele Barducci: So hearing this book i'm showing you our our results so in the Left lot that we said, the results for the run of the expression that 240 gv under the right blog to them, is there a result for the random zip code threshold so 9090 to get.
Daniele Barducci: The result that dashed line or the limits that can be obtained in the future call either by the measurement of the additional invisible higgs boson ratio ratio or on the right spot the from the measurement of the examples on.
Daniele Barducci: As you can see, Sir future collided greatness of the indirect reach on this adventure ratio.
Daniele Barducci: With a Swiss kind of a final state process, for example, we can test order tend to them, I I tend to the Mongols for venture ratio of the higgs boson.
Daniele Barducci: And the hix run or or the temple demand standard ratio ratio is that both on a desert Polygon so this name is well beyond the one conduct amiable from procedural measurement you can test multi TV regime for.
Daniele Barducci: A and in our paper we have discussed also the prompt on the collaborative stable case, but this is the displace a prediction for discounted staff.
Daniele Barducci: slightly.
Daniele Barducci: So this what was concerning dimension five operator dimensional six of ECHO, there are many more of it right, so that I don't want you to read the whole list, but there is a bunch of a bunch of the operators that you can write a dimensional six.
Daniele Barducci: then put a fact, and this action operator can induce can induce edition of the key notes.
Daniele Barducci: dimensional fi the decay mode of the random you know is one, despite the mixing so as the standard or not, this is a model and dimensional six you actually switch on new became.
Daniele Barducci: This the came out are divided into came out in three for me, if we can either be referred me on induced by a dimensional six for failure Baker.
Daniele Barducci: or three third and final state that induce a dedicated have an option that both on w balls on originals, so there are three sweating of state or did they came to a standard more than usually you know.
Daniele Barducci: Speaking into categories and, importantly, this new edition came out and dominate over the mixing as is shown in the spot, where below the solid black line the decay in dimensional data dominates over the one induced by the most.
Daniele Barducci: interesting for the fame of a given section, which is today we just square the process, so this isn't really interesting bad good for future music to be collided, as for example click or as now is a bit more and more popular in your.
Daniele Barducci: Next slide please.
Daniele Barducci: So for lucene three know will give you a final stage to fall on on energy to let dawns on the fourth edition of smells.
Daniele Barducci: With this higher dimensional operator, the show decay lengthen the decay lengthen the law, the data and how can actually be in the States region, so this is showing a lead to.
Daniele Barducci: A mass and they got upscale Lambda and the blue region is the one where the decay length is will be displayed to say.
Daniele Barducci: Between again point one centimeter on one meter.
Daniele Barducci: On the right bottom showing the Linux that can be attained with a similar strategy.
Daniele Barducci: Using displaced verte This is, as you can see again, you can test that really high.
Daniele Barducci: cascade Lambda you can just said physics again in the movie the boogeyman so this future hicks factor in that thing this dimensional six operators, this new typical either a really effective in a resume or what also in Montana state of cases.
Daniele Barducci: Next likely.
Daniele Barducci: So, finally, I want to comment about some work in progress we're doing at the moment, so this, so what I was talking at the moment, was some experiments.
Daniele Barducci: which are sensitive to the key length we didn't want meter but, as we know, there are many experiments are sensitive to order of 10 hundred meters of the KLA.
Daniele Barducci: As far as mccool's lander, as we have heard in these days, the question we're trying to that second the test this scenario.
Daniele Barducci: So we're starting to work on the case where we can focus on the simplest case so know mixing between that give us that I know that you know, and only the dipole operator on.
Daniele Barducci: So it was only one take a channel one right handed or three you know they came to the last year and then, as we know, and before.
Daniele Barducci: The decay Lang is function of course also have the must play in the more the generator these guys are the long the decay length.
Daniele Barducci: For nightmare handlers ino masks the dominant production is based on the case, so the signature we're looking at is the following Amazon.
Daniele Barducci: For example, a jade side again you to about 103, no one is gonna like this table for this, so our security is a single fought on became clear that.
Daniele Barducci: it's an escape of back in this final state so here on the right blog i'm showing the limits that can be gained by phases in this little area.
Daniele Barducci: A overlaid with though they limit to obtain, for example, for sheep, though the experiment like charm.
Daniele Barducci: And we just sit around whether or the experiment in fact this final state the single photo signature, which you understood, these are quite.
Daniele Barducci: Challenging having just a simple one, so an experiment that when it is welcome on the blue chip was really helpful for us, so I think i'm done with time, so I just flush the conclusion in the next slide on the lead time for question comes Thank you.
Matthew Citron: Thanks very much.
Daniele Barducci: Now you can go next slide but.
Daniele Barducci: yeah.
Yes, yeah.
Matthew Citron: So i'm presenting, so I can see if anyone has their hand raised.
Daniele Barducci: Oh.
Daniele Barducci: Yes, he.
James Beacham (he/him): has a hand.
Matthew Citron: Okay, go ahead.
Matt Strassler: yeah can you can you just clarify this has been fully studying for atlas and cms in terms of what they can do on the case.
Daniele Barducci: So yes, on the higgs the case so hicks the case in Korea North Korea, because the state has bestowed upon us, and there are so.
Daniele Barducci: Few theory paper excited on one of the previous slide by caputo that man this operator, so the test this scenario, are the of the delicacy.
Daniele Barducci: and also the dipole operators, so the the K let's say additional decay of the dead has been studied in collider on the collider frame or by Santa Maria and collaborators Aleppo and there are some studies out there delicacy yes.
Matt Strassler: But, so this is.
Matt Strassler: The computer people what year was.
Daniele Barducci: A couple of can you go back a few slides by heart, I think 2016, but if you go back like two three slides I think a quote and I.
Daniele Barducci: know.
Daniele Barducci: you've got it okay so yeah it's 2017 delicacy favorite.
painting.
Daniele Barducci: What.
sxie@fnal.gov: I have a question.
sxie@fnal.gov: On this last part where you have you make the single photon what what is, do you know what what is the energy of this photon.
Daniele Barducci: he's not really it's not really hard photon do the energy can be adored.
Daniele Barducci: 10s of GB let's say, less.
sxie@fnal.gov: than 10 GB out 10 GB.
sxie@fnal.gov: Okay, because because.
sxie@fnal.gov: As we heard on the first day that this we have this.
sxie@fnal.gov: capability, with the cms mian detector to.
detect.
sxie@fnal.gov: These photons if there may produce later, so they tend to be there is a possibility to observe that.
sxie@fnal.gov: So.
Daniele Barducci: Yes, yes, exactly yes yeah is that this is why, when our said this workshops been interested, yes, I was referring to that.
Daniele Barducci: is really working with a collaborator yes, we need to, we need to check.
Daniele Barducci: At target, which was phase.
sxie@fnal.gov: Okay, great so yeah we will, if you have more information on it, we would be interested in seeing it and maybe try it out.
Daniele Barducci: Oh that'd be nice sorry I cannot see your screen, can you tell me your name so.
Daniele Barducci: We can't we can't shut the fly maybe I cannot see.
sxie@fnal.gov: Your level of my face yes.
sxie@fnal.gov: i'm safe i'm a.
sxie@fnal.gov: At fermilab.
caltech okay.
Daniele Barducci: Okay, thank you, thank you.
sxie@fnal.gov: Thank you.
Matthew Citron: also suggested to keep the discussion going on matter most.
Matthew Citron: general interest.
Matthew Citron: Okay, another question as well.
hi.
Lucía Duarte: it's me.
Daniele Barducci: hi.
hi.
Lucía Duarte: No, I wanted to to tell also mad that there's this this food on signal on the dimension five and they mentioned six.
Lucía Duarte: Operators it's.
Lucía Duarte: currently being studied from his boss, and we have a paper from Monday on that and it's it's Nice because they can be.
Lucía Duarte: be constrained by.
Lucía Duarte: Nine pointing for them in atlas so there's there's work going on.
Lucía Duarte: in that direction so maybe you can take a look on that.
Daniele Barducci: We actually chet Baker, I think, is the paper you mentioned, with the way you thought about so they left on exam the writer.
Daniele Barducci: producer.
Lucía Duarte: yeah and the higgs boson paris's to to write too heavy neutrinos and then you have two.
Daniele Barducci: photons.
Lucía Duarte: From that that's that's our thing and we've checked that we could do something with the with the mo for from non violence there's work going on in our class, we have a we had a chat on that.
Lucía Duarte: On Tuesday, so.
Daniele Barducci: yeah no I remember the talk about I think was the paper, where you thought the seeds became too radical three not going to fall on my bed, you need to trigger on the left on the riser.
Daniele Barducci: yeah remember.
Lucía Duarte: What they're doing now on atlas, but if you choose to go for the hicks production and vector Muslim fusion.
Daniele Barducci: that's what we're doing or paper.
Lucía Duarte: Okay, you can do as much better with the parents.
Lucía Duarte: So that's that's something new going on on that side.
Daniele Barducci: And went to share.
Daniele Barducci: I think i've missed it, you might be sent me the paper.
Lucía Duarte: yeah Of course I will.
Daniele Barducci: If I.
Lucía Duarte: die from Monday.
Daniele Barducci: Is smoking Okay, I think i'm he said okay yeah.
Lucía Duarte: Just so fresh.
Daniele Barducci: yeah.
Daniele Barducci: Okay, thank you that's.
Lucía Duarte: that's each other, thank you for your nice talk.
Daniele Barducci: thanks for the question of.
Matthew Citron: It thanks very much the new I think we're probably going to have to move to the next speaker to stay on time.
Matthew Citron: But thanks again for the good day.
Matthew Citron: Thank you.
Matthew Citron: Okay.
Matthew Citron: So I think our last speaker is Lisa are you connected.
Lovisa Rygaard: Yes, can you hear me.
Matthew Citron: Yes.
Lovisa Rygaard: Okay, great I will screen share.
Matthew Citron: Good Thank you.
Lovisa Rygaard: Can you see my screen.
Matthew Citron: Yes.
Lovisa Rygaard: Okay, great, then I will start right away.
Lovisa Rygaard: Okay, so Hello everyone, thank you for having me here today, and my name is Lisa I am currently a master student at Uppsala university.
Lovisa Rygaard: And I will do a talk on the topic of long live particles at the FCC and I will focus on, and the officer presenting some of the results from my own master's thesis for a long lives having you two laptops.
Lovisa Rygaard: So to start off the FCC is the electron positron stage of the future circular later and the SEC itself is a tunnel of 100 kilometers.
Lovisa Rygaard: circumference with two different stages, so, starting with the SEC V, as a first generation higgs electorate and talk factory a tight luminosity.
Lovisa Rygaard: And then the SEC will continue, asked the FCC ah ah as a energy from to your head on collider.
Lovisa Rygaard: And so the SEC is a frontier higgs top electro we can flavor factory where we can directly discover new physics and such as long as particles.
Lovisa Rygaard: And so, currently there are two detector concepts for the FCC first the cmt design by the Sunday in your collider to take the group.
Lovisa Rygaard: which has been adapted for the SEC, and then there's also the new idea design, which has been specifically designed for this new SCI fi.
Lovisa Rygaard: And that's we are currently still in the preparation stages for the FCC there's still a lot of opportunities to design general purpose detectors with longer particles in mind, from start.
Lovisa Rygaard: With opportunities for new and creative designs and one example, could be the case detector which is dedicated for long lifetimes.
Lovisa Rygaard: And there are, of course, a lot of ongoing work on this topic, and some of it presented in this no less white White Paper.
Lovisa Rygaard: Where three longest physics cases are presented, I have in utero leptons accent like particles and higgs boson dance with exotic the case to longer particles and i'm part of the ongoing work is also my own master's thesis with simulations.
Lovisa Rygaard: Of lovely have to bring you to leptons.
Lovisa Rygaard: At the FCC and, as I said, that will be the main focus of this talk.
Lovisa Rygaard: So, having electrons or right handed sterile have been neutrinos and they could shed some light on some of the open questions of the standard model.
Lovisa Rygaard: Such as neutrino monsters very on symmetry and dark matter and I saw you here to derive the.
Lovisa Rygaard: sensitivity of block from the physics briefing book with each nails mix to electron neutrinos So you can see here the REACH for html.
Lovisa Rygaard: On the for the SEC on the terrorists, he run for for the mouse and the electron cufflinks, and so the FCC will prob space not constrained by.
Lovisa Rygaard: astrophysics or cosmology and complimentary to accelerator and neutrino prospects and also the parameters based for the he knows at the SEC, he is also very good for barrier genesis.
Lovisa Rygaard: Yes, and onto the simulations that we have made currently and we have made simulations for the SEC see Paul run.
Lovisa Rygaard: As a story that can be built upon in the future, and we have seen related processes in the fireman diagrams to the right.
Lovisa Rygaard: With one heavy neutral left arm coupling to electron neutrinos and we have defined the final states to be electron electron Yun jie neutrinos.
Lovisa Rygaard: And the simulation something generated using math math graph PC and office and with the latest idea card for the detector reconstructions.
Lovisa Rygaard: we've also used one minute on that html with the model at the top here and all the analysis has been made in the FCC framework.
Lovisa Rygaard: and asked for the analysis over a long lived and having you two electrons we have used this relation here for the decay length and so we can see that for HMS with smaller losses and smaller cufflinks we can achieve longer the key links.
Lovisa Rygaard: Yes, and here we will see some of the results for the king's book that we constructed with the generated and reconstructed level four five benchmark signals here with different Moses and different cufflinks.
Lovisa Rygaard: And, and then the key length here is shown in 3D so X y&z directions and this confirms that the signal kinematics behave as expected, both generated and reconstructed level.
Lovisa Rygaard: Because we can see that for eight and elsewhere it's smaller mouse or with or with smaller cufflinks we will achieve longer the killings and also, we can also see that eaten us we longer dickie length gave us more and more reduce number of reconstructed events.
Lovisa Rygaard: Okay, so over to the to also introducing some of the signal and background analysis that we have done, we have used centrally produced background samples with the idea detector.
Lovisa Rygaard: And they've been generated similarly us the signals first here we can look at the total missing energy to the right and we have it for the five background samples that we use, and then we have to benchmark signals with different couplings.
Lovisa Rygaard: And also note that we are looking at the total missing energy for the electron positron collider and not only the transfers missing energy and.
Lovisa Rygaard: And for the first event selections that we made in this analysis, we required required the total missing my mentor to be greater than 10 gv, as you can see your soul.
Lovisa Rygaard: And another interesting variable that we've looked at is the transfers impact parameter D zero of the electron tracks from the eternal decay.
Lovisa Rygaard: And so to the left you'll see the D zero and parameter in the transverse plane just an image and then you have the two parts to the right.
Lovisa Rygaard: And they're both the same cloth but in different ranges on the X axis of the impact parameter again with the same background samples and the to benchmark signals here.
Lovisa Rygaard: And we can see on the right thoughts that we can achieve pretty large values for the impact parameter for long live having electrons.
Lovisa Rygaard: And here we have started with that transfers impact parameter, but in the future, we can and should move on to this 3D impact parameter and and also here and to start off in our event selections we have required the diesel to be greater than 0.5 millimeters.
Lovisa Rygaard: Yes, and here we have some results of the first attempt at events elections, so the table, shows the cumulative expect the number of events.
Lovisa Rygaard: After each selections looking from left to right on the reconstructive valuables and for 150 per act upon.
Lovisa Rygaard: And, as I said, we have used the takedown missing momentum and also the transition that parameter and the Beatles are on you on sculptors and jets.
Lovisa Rygaard: And, and these are four five benchmark signals again with a total of 50,000 raw number of the simulated events.
Lovisa Rygaard: And then moving on here we can see some of the results for the background samples.
Lovisa Rygaard: And the background samples that were simulated between 10 to the power seven to 10 to the power of nine of total raw number of events, and you can see, after the.
Lovisa Rygaard: final selection to the right we have in some cases still quite relatively large uncertainties that limits our selections and analysis, so one of the next steps that we would like to see is to be able to simulate larger background samples, so we can reduce these uncertainties.
Lovisa Rygaard: Yes, and here you can see a preliminary sensitivity two blocks from our from after our selections where.
Lovisa Rygaard: Our choice of merits use the number of signal events and the number of background events and the uncertainty on the background, after all these elections.
Lovisa Rygaard: And the plot here shows that simulated parameters space for the agent mouse and Kathleen, and so the white areas are.
Lovisa Rygaard: serial number old signal events after these elections, you can also see to contours here first s equals 0.05 includes here and then s equals 0.01 yellow and we have also included a theoretical prediction for comparison in read from this article here.
Lovisa Rygaard: and the first thing to note here would be good, that the theoretical prediction includes all of the each of the cables which our analysis does not currently, and so it would be expected that the theoretical prediction has a broader sensitivity and and ourselves currently.
Lovisa Rygaard: Oh, and also, just to mention, as I said before, we are including the uncertainty on the backgrounds for our sensitivity, so of course that affects this sensitivity plot as well.
Lovisa Rygaard: Yes, and finally, I just want to mention some of the next steps that we, we would like to see in the near future, possibly so, as I said, we are limited by the background statistics currently so it would be very nice in the future to be able to.
Lovisa Rygaard: produce larger samples and other options to explore in the future could be background fits to the right, you can see an example, this were.
Lovisa Rygaard: A background fits for the transfers in fact parameter with four different impact input functions, but again larger background samples would also benefits and this.
Lovisa Rygaard: These fits as well, because then we could, with more confidence decide on one correct it.
Lovisa Rygaard: And, and also some other next steps would be to investigate some additional variables for our selections and also to optimize this lessons that we have now.
Lovisa Rygaard: And, of course, also add a the remaining that came out for the sensitivity analysis and and we could also explore some different detector configurations, and with that I say thank you for having me, and thank you for listening.
Matthew Citron: Please very much.
Matthew Citron: If you have any.
Matthew Citron: Questions I see.
Matthew Citron: Well that's not plasma hand.
Matthew Citron: There was a very nice very interesting to see the sensitivity and Joe nice to see the simulation of background as well.
Matthew Citron: I think it's quite unusual to have that already for for detective prefers than the feature sets it's great to have something so robust.
Matthew Citron: and
Matthew Citron: i'm curious for the simulation of the detective how did you decide the resolution in the performance.
Matthew Citron: What we do you have an idea what that was based on.
Lovisa Rygaard: And do you mean that using the idea detector and that's.
Matthew Citron: yeah so, for example, the the the resolution of the D zero.
Lovisa Rygaard: And i'm not actually sure myself, we have used the assessment, the input card for the idea detector.
Matthew Citron: Which is.
Lovisa Rygaard: The SEC framework, so I haven't really myself in looking at any more details on that.
Matthew Citron: Okay, so it looks like actually if I.
Matthew Citron: put everything on the background is mainly coming from toe so there's a.
Matthew Citron: Really displaced things okay interesting.
Matthew Citron: Okay, thank you.
Juliette Alimena: Good choice, he.
Juliette Alimena: says that's a collaborator louise's I could just chime into to say that all this is implemented in delphia so.
Juliette Alimena: that's what what we're assuming, and also that it's a I think it's what's you know the FCC collaboration now is i'm assuming as the default, but unfortunately I don't know any more details on that.
Matthew Citron: Okay, but yeah I was just curious kind of what kind of parameters you put into the Office, for example, for the the resolution to track will be able to achieve on the p zero or something like this, but.
Juliette Alimena: I understand and I don't have.
Matthew Citron: Those numbers i'm sure yeah thanks.
Matthew Citron: I was just curious Okay, I see like think that's a question that we should probably.
Lingfeng Li: Have a question and a comment.
Lingfeng Li: I think i'm not the collaborator i'm not the expert have to claim that, but I believe that latest idea detective card intelligence actually uses some kind of realistic.
Lingfeng Li: Though co simplified physical model of the of the vertex resolution, for example, what if you look at their card you actually find.
Lingfeng Li: Each layers of trackers okay just what's the resolution of each layer the millimeter and then also the thickness, so I think the authors, if you want, I can point you to the reference okay.
Lingfeng Li: For example, the Multi scattering effect that introduced in each layer and they have.
Lingfeng Li: Like to introduce 10s of layers of this.
Lingfeng Li: Okay dude I mean just according to the actual detector profile is a pretty complicated business is pretty model is that but it's only available at idea detector because it's the latest technique yeah.
Lingfeng Li: So another.
Lingfeng Li: Question so So this is the comment again i'm not the collaborative this on the other hand, I have a question.
Lingfeng Li: On likely, the framework.
Lingfeng Li: Analysis framework you use do you use edm for http framework that's being used for many FCC upcoming works.
Lingfeng Li: For example, for vertex thing vertex tracking and also like say the real test reconstruction because that's not included in the pelvis package.
Lovisa Rygaard: And I think, maybe and Juliet gnosis better i'm not actually sure, and so.
Juliette Alimena: Yes, we are using edm yep.
Lingfeng Li: Thank you.
Matthew Citron: Okay, thank you, I think we should close the session there.
Matthew Citron: And then looking to try and get back on time we'll have a.
Matthew Citron: five minute coffee break.
Matthew Citron: And so my watch that means we should return at.
Matthew Citron: 432 Okay, and thanks again to the visa.
José Zurita: and
Matthew Citron: All the speakers of.
Matthew Citron: The dedicated Texas and teach little particle circus see you back here soon.