WEBVTT 00:00:00.000 --> 00:00:01.000 Okay, so we will slowly transition back to session mode. 00:00:01.000 --> 00:00:20.000 So, thank you, whoever says there's a gardening substitute if you want to share your slides we wait if they need it. 00:00:20.000 --> 00:00:27.000 So, okay so we're going to start the double session on dark showers. 00:00:27.000 --> 00:00:33.000 So since the very first worship this has been a quite an interesting topic. 00:00:33.000 --> 00:00:37.000 And I think he has this bloated a lot in the last few years. 00:00:37.000 --> 00:00:52.000 So whether that's the word organizer, the worship class actually said to new clay people and in Kobe this huge effort on the shower that developed very nicely and there is no mask on whether the director was people ran away from our worship and winter 00:00:52.000 --> 00:01:06.000 snow my son, Dave bloom there is of no interest for us what is really interesting is that this is a lot of activity that has happened and we're going to hear a summary of ICT term this is no math white paper, and then we will have of course, a lot of 00:01:06.000 --> 00:01:20.000 individuals who got hands on action, a presenting their own individual papers. So without further ado, please to cheetah. Go ahead, and in about 20 minutes, the softer voice of microphones, Julia will tell you have five. 00:01:20.000 --> 00:01:23.000 Okay, good. 00:01:23.000 --> 00:01:27.000 I hope you can hear me. 00:01:27.000 --> 00:01:32.000 Just my screen a little bit slow. 00:01:32.000 --> 00:01:39.000 So I see you like no no see perfect timing somewhere in check with myself. 00:01:39.000 --> 00:02:03.000 Hopefully I don't need a very good. Um, so yes, Oscar present by the organizers Here is a brief summary of this enormous white paper on dark showers which is, which was an effort that was running during the lifetime of Snowmass, and go briefly about what 00:02:03.000 --> 00:02:07.000 we've come up with what we've been able to understand which we have been able to progress to stop. 00:02:07.000 --> 00:02:16.000 Okay very good organization. Let me just start with a bit of a background of what this effort was and how it formed. 00:02:16.000 --> 00:02:30.000 Of course we started with the most creative logo the logo that one could come up with a nice you see the glucose and the slide, it's very nice logo, and it's something that we tend to use when we get to talk on organizationally We met at least once a 00:02:30.000 --> 00:02:44.000 month to discuss ongoing work. We have several papers and several nice things that are presented and discussed in the meeting, and had him mailing list which was set up as a total of about 70 members now, which basically the monsters that is a critical 00:02:44.000 --> 00:02:48.000 a critical mass in this direction, and a lot of interest. 00:02:48.000 --> 00:03:08.000 You're very lucky and interesting if a group that we ended up with consisted of theorists, including authors experimentalists who are working on covers and basically this very nice combination of the two and a bit crosstalk among different groups, and 00:03:08.000 --> 00:03:19.000 had a very cohesive approach. Also, it was a fully bottom up approach we never said, People should do this or shouldn't do it is something that we came together and I think that's something we're very proud of. 00:03:19.000 --> 00:03:22.000 We have recording at life rates of all the meetings. 00:03:22.000 --> 00:03:36.000 I've provided you the link on the slide. There is a mailing list which means that if somebody is interested in joining and getting informed, please do feel free to subscribe to that you okay with this. 00:03:36.000 --> 00:03:39.000 Let me start with the physics of the code itself. 00:03:39.000 --> 00:03:56.000 I don't have to basically justify or explain a lot in this audience that hidden valleys are strongly interacting, new sectors are very interesting, because it's one of the places where new physics could still be hiding identity is one of the places when 00:03:56.000 --> 00:03:58.000 you visit conservative any light. 00:03:58.000 --> 00:04:00.000 Right. 00:04:00.000 --> 00:04:13.000 By now, we have several reasons. In addition to the fact that there is just a possibility of new physics. And those are partly related to the fact that they give you new unexplored signature so there is something which we have not looked at and we should 00:04:13.000 --> 00:04:17.000 take it seriously because it's a signature we could be missing. 00:04:17.000 --> 00:04:28.000 It's related to, or it can be related to flavor physics so maybe there is a possibility of explaining some anomalies or finding new things in the sector of live in physics about it. 00:04:28.000 --> 00:04:38.000 It can be related to new dark matter particles. And that's very interesting possibility as well since we have not found it out with a particle which is elementary from whatever. 00:04:38.000 --> 00:04:41.000 So just we've been carrying on so far. 00:04:41.000 --> 00:04:53.000 And finally, it's not just that we have new and previously unexplored signatures, but the signature spaces, whilst it has very complex parameters space, and therefore we need to think about it. 00:04:53.000 --> 00:05:09.000 Rather, seriously and carefully about how to map this complex but very interesting period of new physics theories which are stronger interacting with our present world talk of basically consists of new age groups, which are on charged under the standard 00:05:09.000 --> 00:05:22.000 model. The phenomenology could be very definitive page will be charged under the Standard Model, some of the principles remain the same, but what you will come out of as a signature speech. 00:05:22.000 --> 00:05:38.000 These theories are traditionally characterized by potentially two sets of variables, once which are defined in, they'll try it, which are related to the, the age group in the dark and the number of flavors in that age group and the confinement scale on 00:05:38.000 --> 00:05:40.000 the dark with each coupling. 00:05:40.000 --> 00:05:57.000 And the UK and in the IRA, these translate to basically the masses of the bomb states of america responding lifestyle lifetimes and raunchy nationals, and of course then in between these two sectors, we need to introduce some mediators with immediate. 00:05:57.000 --> 00:06:13.000 So what when get sort of such kind of setup is basically a few different kinds of interesting regimes in the parameter space, one vision where you get dot shirts were on photo time since the dark is small, and the other issue which don't make it so this 00:06:13.000 --> 00:06:25.000 is a very rough classification and suffocation at this point. But the other regime is where you could solve can cluster energy patterns, also known as. 00:06:25.000 --> 00:06:41.000 And I briefly characterizes the signatures. Now, how have you been dealing with these theories. We've taken our traditionally we've taken a signature based approach which is another good thing to do when we are starting with approaching something which 00:06:41.000 --> 00:06:44.000 we are not familiar with. 00:06:44.000 --> 00:06:57.000 And what we've done so far in the phenomenology is to very old parameters of the theory which is the number of colors the flavors the confinements games the quad mass is the bomb saved my sister branching initial setup fee. 00:06:57.000 --> 00:07:09.000 In order to protect these theories the Standard Model we've had, primarily two different portals ministers the prime portal and the other one is the fundamental teacher portal, so we have as channel theories and teach other theories. 00:07:09.000 --> 00:07:19.000 And in terms of signature spaces this we have these have given us signatures in terms of semi visibility too much injured struggling 00:07:19.000 --> 00:07:34.000 with not cared much about the bounce rate spectrum characteristics we built the ruined pions on the same 14 for example, and all the simulations that we've done so far or based on PTO PTO driven by the module. 00:07:34.000 --> 00:07:46.000 And this is something that we should be. We should keep in mind that currently there's only one simulation that allows us to simulate theories, especially when we're talking about jets. 00:07:46.000 --> 00:07:57.000 Pretty good. So, the cool. 00:07:57.000 --> 00:08:11.000 In case of semi visible church, basically we have a limited edition of stable docs at the particles which are in physical activity and some of the doc center articles which are DK back to the standard model, and therefore are visible. 00:08:11.000 --> 00:08:41.000 We assume that all of these particles decay via to body, apparently, in the, in the detector, and therefore you see it as a jet and a contract, and has been characterized in doing so far in Mississippi which is basically the issue of the and Stephen measles 00:08:41.000 --> 00:08:55.000 hand, are things may not be sons have finite lifetime and therefore going to the category of longer particles, and these have jets with multiple displacement ISIS, you have on flavor case where you only one lifetime your flavors case where you have multiple 00:08:55.000 --> 00:09:08.000 lifetimes for the results and responding to these two. Of course, CMS has also look for the searches and have basically come up with the first limits on this parameter spaces. 00:09:08.000 --> 00:09:16.000 Now something we should keep in mind, is this signature based approach and what we have been doing so far the phenomenon, it has not always been realistic. 00:09:16.000 --> 00:09:25.000 For example we miss some particles will be some symmetry constraints, and that is something we've been trying to update in this study. We've taken the first step towards. 00:09:25.000 --> 00:09:40.000 The other thing we should remember as I said on the previous slide before all of these studies will you have used it kill you and I wish, I will I basically in brackets all the time, tried to mention the version it's either listen to 3.7 or greater, or 00:09:40.000 --> 00:09:42.000 be here. 00:09:42.000 --> 00:09:43.000 Ok. 00:09:43.000 --> 00:09:54.000 Now, with this as a starting point where we've done things, you know, in a completely signature based approach and we read everything that we talked about the parameters of the theory. 00:09:54.000 --> 00:10:03.000 You can think about whether we can do one step better. And this was one of the things that we did in the snow was paper. 00:10:03.000 --> 00:10:11.000 Which one of the new things we did of course we also had. If you have all these existing strategic existing in the market. 00:10:11.000 --> 00:10:16.000 And in this case, basically considering the master generate for me. 00:10:16.000 --> 00:10:21.000 The first thing we have to remember is as long as you're dealing with a QCD like you. 00:10:21.000 --> 00:10:34.000 It has four three parameters, and they are the number of colors the number of flavors visual, which is dimension less which is for example here retake the mass of the pie on a scale. 00:10:34.000 --> 00:10:47.000 And that scale which fixes the rest of the theory. Okay, this game could be any parameter that you can fix through your logic, and for very good reason that and come back to me later on. 00:10:47.000 --> 00:10:52.000 This skill which was here is the skill underdog which is the confinements. 00:10:52.000 --> 00:11:08.000 We often think about these theories as QC like what is QC like really really like really means that the running of the coupling constant in his theory is a sympathetically free okay this is like a few standard model to city like running, and this is something 00:11:08.000 --> 00:11:21.000 which is very important. And if you take this and actually try to understand what kind of NC and if you can pick, so that your coupling constant is always in the same vertical. 00:11:21.000 --> 00:11:36.000 Basically, you realize that you cannot arbitrarily very the number of colors or the number of flavors of these theories, you have a good number or a good control over these parameters and a very systematic way of how to varied in order to actually take 00:11:36.000 --> 00:11:38.000 charge. 00:11:38.000 --> 00:11:39.000 Okay. 00:11:39.000 --> 00:11:56.000 Um, no, in terms of settings here now, we should remember, and this is particularly to be here and limitation of our simulation tools at the moment is we cannot choose the dark age group to be too, because technically it is a real age group, practically, 00:11:56.000 --> 00:12:08.000 it means that in this theory the pylons which are the Cuban states are the same as the values which are the qq states. That means this theory should have given five files but if you put it in the fields. 00:12:08.000 --> 00:12:16.000 It will give you only three. And that means you're not simulating these theories correctly so do not say the number of the digital to be. 00:12:16.000 --> 00:12:26.000 You should also always use a number of formulas to be greater than one, because of one formula in theory has no pions so technically speaking, you are not dealing with theory which is totally broken. 00:12:26.000 --> 00:12:39.000 And therefore, if you do it and if equal to one simulation. technically speaking, we don't know what we're talking about what this might this to begin with is that it's not that we don't know anything about these theories we actually can learn a great 00:12:39.000 --> 00:12:54.000 deal by the amount of work that has already been done in the community, from different sources, and therefore we can set up consistent guidelines for doing escalations for example on this slide I show you. 00:12:54.000 --> 00:13:01.000 The next thing you say okay I said I didn't see another, but what do I do with the mass spectrum of material, can I just put my sister VI. 00:13:01.000 --> 00:13:08.000 Turns out, even that can be understood by looking at the first principles understanding of this too. 00:13:08.000 --> 00:13:12.000 If you're talking about. 00:13:12.000 --> 00:13:19.000 some big group of you said the age group. Get into PT at the moment. 00:13:19.000 --> 00:13:30.000 And if you have enough dark number of masters and required you this theory will predict that you have enough squared minus one, number of masters in return calls and. 00:13:30.000 --> 00:13:38.000 Along with this you have one thing that springs to particular one single It's been one particle. If you think about it in terms of standard American city. 00:13:38.000 --> 00:13:51.000 This is going to be your pie on Monday, which will have a pions, and then you get an interpreter, which also you get a CD, and that's you're going to be a sprint zero singlet and similarly for five. 00:13:51.000 --> 00:13:53.000 Okay. 00:13:53.000 --> 00:13:58.000 You can set the masses of these particles. Oh, very nicely. 00:13:58.000 --> 00:14:12.000 Basically, by, by doing fits to the data to the lightest and this is something that we did with in stone as you see a plot here where we fit into the mass of the pie on Andrew dimension lyst most of the pie on Andrew, and we've come up with, basically, 00:14:12.000 --> 00:14:21.000 our relationships. So once you pick Empire by lambda, you can derive the mass of the quality of the theory. And you can also the right the mass of the room. 00:14:21.000 --> 00:14:33.000 So there is actually a very nice way of setting parameters from UV to IR, the number of colors the number of flavors the quartermaster confinement scheme, and the masses of the departments. 00:14:33.000 --> 00:14:44.000 So this basically gives you some constraints on the parameter space, for example, the ratio of the pie on master schema should be between four and five. 00:14:44.000 --> 00:14:52.000 And you have to pick this epi master lambda dark ratio about 30 greater than 13 so in order to actually get to the chip. 00:14:52.000 --> 00:14:59.000 We have currently ignored any treatment for single any special treatment for simulator we have currently ignore everybody in the future. Okay. 00:14:59.000 --> 00:15:22.000 Okay. Now how many phones DK Can I said, Can I return it turns out not to be the case. Once you fix that most of the hills kind of pions, you basically end up into differentiates one where either the pipeline issue is open, And if they go to pipe it can 00:15:22.000 --> 00:15:38.000 If the road to pi pi became what is not open, and if you set up your up parameters correctly, then the home is on the neutral one often neutral rules can mix with the supplier of your community, and BK back to the standard model. 00:15:38.000 --> 00:15:50.000 And we are so far as you that the off diagonal rules will remain stable, that is actually not true, the diagonal row actually decades way or 340 dk due to the anomaly in the theory. 00:15:50.000 --> 00:16:01.000 Basically what this tells you is that once you understand the UV, cutie and once you understand what are the broken and unbroken symmetries of this theory and kind of look around you in analysis. 00:16:01.000 --> 00:16:11.000 You have fixed all the parameters, including the up sector as well as the IO sector, and the dq or the measles of the theory, talking about. 00:16:11.000 --> 00:16:23.000 So, the free body case is something we have not done at LSE so far it's something that we realized for the first time it's something that we've tried to detail in the Snowmass document, and basically once you end up with the three body dt, you realize 00:16:23.000 --> 00:16:32.000 that the Rolling Stones can potentially be a long live particle know, because it's a Liberty ocean is he playing, you see prime is very heavy, their whole lives for a very long time. 00:16:32.000 --> 00:16:43.000 Which means that one needs to have a possibility to have different beekeepers for different reasons. And you need to have different lifetimes for different reasons. 00:16:43.000 --> 00:16:46.000 And this is something that was not available in the future. 00:16:46.000 --> 00:16:49.000 It would you prior to the current. 00:16:49.000 --> 00:17:05.000 The second thing is now current concern concerning the pions, you can, depending on you to buy on became the standard model, or you can keep them stay with the pylons really here to the standard model. 00:17:05.000 --> 00:17:15.000 If they mix with the longitudinal more of this the prime. In other words, if they get a mass from a Higgs particle, that also gives the master this. 00:17:15.000 --> 00:17:29.000 These are no details of the construction of the theory, what it actually means is that, depending on how you choose to construct your theory, the amount of signatures space that you can get in the low energy is a very fast and we are very very defined 00:17:29.000 --> 00:17:34.000 of your reconstruction. What we was young. 00:17:34.000 --> 00:17:44.000 So what we can ask you is that there is no mixing between the buyer and the supplier, and that circulation stuff while, at least at the scale of 00:17:44.000 --> 00:18:03.000 some kind of understand how to set this up, have you understand a little bit about how the up to IR parameter ization is working. You want to go into this, but unfortunately, you have a one tool and be a tool that is limited in terms of controlling the 00:18:03.000 --> 00:18:08.000 characteristics of the missile masses that you want to control. 00:18:08.000 --> 00:18:31.000 So fortunately, because we had a few authors in our, in our doctrine was group, and the timings without the BT authors were actually very nice to make good substantial improvement in the PTO, which led to a new version of BTR seven, which gives us better 00:18:31.000 --> 00:18:44.000 control over the masses of the me songs in the low energy. And what we also did was to validate this material, basically to verify that if you have a mass degenerate ruin the pie. 00:18:44.000 --> 00:19:00.000 The, the rate at which these particles should be produced are very similar, we validated that you can't reproduce standard model to CD, if you go into the appropriate ratio, and that the producing their standard molecules it meant that one had to do a 00:19:00.000 --> 00:19:15.000 bit of. I just mentioned the string, we need strength augmentation function, but this was all done by to be cared authors were validated, we understand what the differences between the old and the new versions are therefore we have reasonable understanding 00:19:15.000 --> 00:19:18.000 and reasonable trust in the tools that we're using. 00:19:18.000 --> 00:19:39.000 I should mention here that not validated the hybridization model at the moment, but we valid, we have, as I said, we've ensured that it reproduces standard one which is city in the appropriate hundred ization of this dog sitter is something that is still 00:19:39.000 --> 00:19:55.000 why should you care about doing all of this work for one foot, foot for the first primary reason is because you if you're talking about creating checks or did it see throughout the process of pattern showering and modernization, the dark coupling constant 00:19:55.000 --> 00:20:11.000 runs this coupling constant is running is controlled by the London which is the confinements to Steve, and therefore you have escaped the tea leaves, you need to understand how the skin fits into the rest of the physical security team. 00:20:11.000 --> 00:20:25.000 The mass spectrum of your results, depend on the dark masses, therefore there is a relationship between iron up physics quantities, and that you should take into account, you can quantify using this knowledge. 00:20:25.000 --> 00:20:34.000 You can try to quantify colonization uncertainties and uncertainties limit your search power, therefore you should care about it. 00:20:34.000 --> 00:20:47.000 And it also leads to phenomenology like three already case that will not so fun identifier, or a phenomenology and speeds 00 and one thing leads which also we have not identified so. 00:20:47.000 --> 00:20:54.000 Okay, so with this. I have another little time so I'm going to go a little bit faster. 00:20:54.000 --> 00:21:04.000 What it basically means in practical terms, is the former, we have here for example to physics research, one, which looks at jet subscription variables on. 00:21:04.000 --> 00:21:21.000 Then, one, two or three pounds became in three flavor theory, and we can identify how these differences are under the bed try to identify what should be the discriminating power between the Standard Model q3 background and subscribers just get substitution 00:21:21.000 --> 00:21:36.000 variables. But you see here if you have a lot of the theory the case instead of a political you get very different kinds of behavior in the immediate more spectrum, and that would mean, you basically your observers could be very different and that's something 00:21:36.000 --> 00:21:39.000 which is very interesting to explore. 00:21:39.000 --> 00:21:51.000 The other thing that I also realized is that the substructure variables that we are using for energy analysis, some of them for example PTSD, and actually not infrared safe quantities. 00:21:51.000 --> 00:22:00.000 And therefore, you have to take care of what kind of just substructure variables you're using and whether they're actually the safe thing to use it. 00:22:00.000 --> 00:22:17.000 Okay, so that's basically the kind of progress that we could make on the, on the side of it, and basically more or less the BB amount of time we could have for these progress within the Snowmass lifetime. 00:22:17.000 --> 00:22:36.000 But he also had a very nice dedicated crew for also swept like signatures, which are signatures in the large, complex, when a doc is very large. These day to answer press marginal radiation, and basically the wide showers. 00:22:36.000 --> 00:22:41.000 Theoretically very small class of these theories have been proven to exist so I think a very interesting. 00:22:41.000 --> 00:22:52.000 Laws of theoretical studies that can be done in order to understand what these theories could be what can they exist and so on and so forth. It's a purely theoretical development we didn't go into that. 00:22:52.000 --> 00:23:02.000 But also, that means that we don't have any dedicated simulation tools and there are some approximate idealization that exist at this moment. Right. 00:23:02.000 --> 00:23:08.000 Using these approximations, you can basically trying to simulate these theories. 00:23:08.000 --> 00:23:25.000 And basically, rely on the shape of the bus that serves as a useful analysis. Right. So for example here I show you what they call us this way the city of the, of the isotopes of the slip 00:23:25.000 --> 00:23:32.000 analysis, or this word final states. And essentially, 00:23:32.000 --> 00:23:47.000 the difference between these two clauses This is before any trigger. This is after any trigger, and once you apply the trigger basically district strategies cleared bias towards less medical events, and that gives us very good direction. 00:23:47.000 --> 00:23:57.000 Thinking about and it's essential for the series where trigger strategies will play an important role in identifying certain types of events. 00:23:57.000 --> 00:24:11.000 You can also have beyond QCDI curious in terms of glucose is interesting because they are going someplace no no billion theories theories which contain no fermion so scalars, I'm not actually going to go into details of this night because I realized later 00:24:11.000 --> 00:24:16.000 on that. Caleb is going to talk all about it in the next session. 00:24:16.000 --> 00:24:32.000 I just want to briefly flashed aside and say that this exciting Avenue has started to be explored. In theory, there is a public tool, which gives you some amount of freedom in setting the modernization settings and therefore exploring what could or could 00:24:32.000 --> 00:24:39.000 not be a lot more theory development can go in this direction. 00:24:39.000 --> 00:24:52.000 Finally, we also looked at what can you improve in terms of just search strategies, it's not something that I'm expert in this goes more in the direction of machine learning this goes in the direction of really experimentally the forward looking analysis. 00:24:52.000 --> 00:25:11.000 So I spent literally 30 seconds on this slide, saying that you have measured pathways in terms of defining discriminating variables, defining new triggers and use supervised or auto encoder type of machine learning techniques in order to discriminate 00:25:11.000 --> 00:25:26.000 between the standard backgrounds and doc jet or swipe light signatures because what you want to do is to really look inside the event shape and try to understand what is different between what you're seeing and what standard modalities we can give. 00:25:26.000 --> 00:25:28.000 Okay. 00:25:28.000 --> 00:25:43.000 And there's also a lot of discussion about this in the, in the literature as well as in the doctrines paper here. And again, as I said I'm not really a very, very well informed person about this topic I'm not really a right person to talk about this topic 00:25:43.000 --> 00:25:47.000 but I do want to mention that this is something very exciting, very forward looking. 00:25:47.000 --> 00:25:50.000 And we should try to explore it more going into the future. 00:25:50.000 --> 00:25:58.000 So Veritas doctrine was not was started in this at this moment, we still have the version two of the white paper in progress. 00:25:58.000 --> 00:26:14.000 We do have a number of things which we wanted to finish during this is something that we still interested in pursuing still interested in doing, I this the the bullet points here, but I'm not go through all of them for the lack of time, but you'll feel, 00:26:14.000 --> 00:26:20.000 please feel free to read the slides and voice your opinions on this. 00:26:20.000 --> 00:26:31.000 And just briefly share a totally unbiased event advertisement. Oh, there is an upcoming workshop on some invisible chats. I've linked of Indigo website there. 00:26:31.000 --> 00:26:40.000 Please, please feel free to contact organizers in case you have questions, myself being one of the organizers and therefore the advertisement being totally unbiased. 00:26:40.000 --> 00:26:43.000 Okay. That brings me to my conclusions. 00:26:43.000 --> 00:26:48.000 I will again not spend a whole lot of time going through all of the conclusions. 00:26:48.000 --> 00:27:02.000 Basically the point being a strongly interacting doctors are interesting, because of the government's booster shortcomings of the standard model, and they provide interesting opportunities at the experiments. 00:27:02.000 --> 00:27:09.000 We have critical mass in order to drive this program and the reason we should use it both on the fennel and the experimental side. 00:27:09.000 --> 00:27:28.000 In this context, we did a project on doctrines, in the snow mask on post disobeyed existing models the overall event, what do we have new understanding of these theories from up to IR we propose some few first benchmarks, but we also have been behind 00:27:28.000 --> 00:27:42.000 this. So what is on the market in terms of rent analysis strategies in terms of new videos and new methods. And we also discuss what would happen if you go beyond you see the next scenario is in terms of signatures. 00:27:42.000 --> 00:27:54.000 Finally, we should remember that a successful exploration of these theories, can benefit from understanding on the underlying theories can benefit from talking to other communities like like the simulations. 00:27:54.000 --> 00:28:06.000 And furthermore, it's really an exercise which brings together community from standard model to city from below, from nonlinear particles from dark matter experts, as well as experimentally so working together. 00:28:06.000 --> 00:28:18.000 So with that, I thank you I'm sorry if I don't wish over time, and I would like to find a deeper truth, having a very big thank you to all the contributors because know most people without which none of this would have been possible. 00:28:18.000 --> 00:28:23.000 Thank you very much. 00:28:23.000 --> 00:28:24.000 Thank you. 00:28:24.000 --> 00:28:42.000 Nice, nice presentation and trying to convince the enormous amount of work have so many people in ATMs lights. So we open the floor for questions. 00:28:42.000 --> 00:28:53.000 See so so far I see no console so let me abuse of my powers of convenience to ask you something. So, so essentially one of your forgiveness these you know we have a set but I'm that mediated sectors. 00:28:53.000 --> 00:29:05.000 This is for example this in the UK unfairly Milla papers and another lecture would be fun. But in principle, you could also use the standard model heats as a mediator with effect so you have to less parameters, right, and probably much more because it's 00:29:05.000 --> 00:29:22.000 So you have two less parameters, right, and probably much more because it's essentially free. So is the is normally does not consider because for reality you tend to get started is way too soft, and then you start to see or because I remember funny testing 00:29:22.000 --> 00:29:40.000 the benchmark paper from Simon nap and and Jesse, they did consider some sort of exotic exotic easy gay, a body wasn't the thought of the paper so I don't know if it has only to do with the fact that they they came across I have soft, or is there any 00:29:40.000 --> 00:29:41.000 other reason why the construction with the same time is it perfect. 00:29:41.000 --> 00:29:57.000 why the construction with the same time is preferred. Okay, so there are several ways in which I can answer this question okay how do you construct acuity, that has a hick stuck mediates interactions between standard model, and the dog sector. 00:29:57.000 --> 00:30:06.000 The one easy thing you can do is you charge, some of the dogs are called under the standard model and then you have basically a porter, you can use for. 00:30:06.000 --> 00:30:21.000 To put it simply use the Standard Model X to give monster the dark box. Okay. As soon as you start to do that you're basically heavily constrained by several different experimental soldiers, as well as considerations of things like magnetic poles and 00:30:21.000 --> 00:30:28.000 and diapers and stuff like that, that will push the, the, the mask is of these theories very very high. 00:30:28.000 --> 00:30:29.000 Okay. 00:30:29.000 --> 00:30:40.000 So if you want to have, like, new physics that talks to the Standard Model why I hit by charging a part of that sector under the standard model. I think you are in a bit of a tough luck here. 00:30:40.000 --> 00:30:55.000 The other thing you can do is, for example, you can introduce a dark kits that mixes with the Standard Model it's this dark, dark Sector quarks or something like this. 00:30:55.000 --> 00:31:07.000 And there is a probably there is a possibility of cooking up something in this direction will you ever take star cakes mixing and then the Standard Model hits the keys to the, to the dark center particles. 00:31:07.000 --> 00:31:20.000 The third possibility in which you can do it is for example by constructing something like HQXX searches, I see Matt has a hand up, I probably did something which is not a correct argument not give me a second. 00:31:20.000 --> 00:31:30.000 And the other thing you can do is you can construct something like an HXXHZNZ blame that literacy prime DK back to the standard to the Dark Sector. 00:31:30.000 --> 00:31:36.000 If you can, you can 00:31:36.000 --> 00:31:45.000 control the hierarchies between the zebra mussels and confinement skill sets that you can still get the Jets out of it I think this is also possible scenario where you can. 00:31:45.000 --> 00:31:55.000 I don't think there's a very specific reason for why is he prime is preferred I think it's preferred because it's the simplest thing you can do, but that does not rule out additional portals. 00:31:55.000 --> 00:32:03.000 What it necessitates is we understand how to set these parameters going from top to bottom. 00:32:03.000 --> 00:32:25.000 The next guy I think just just just to elaborate on that and and it's it's, you know, the part of this is historical and part of this is phenomenal logical, there's certainly no reason at all that you can't have haters decaying to dark jets. 00:32:25.000 --> 00:32:31.000 But first of all, 00:32:31.000 --> 00:32:45.000 if you want to do. All hydroponic signals, which was driving some of the interest in some part of the community Okay then. Your most of the time people aren't at first of all people hadn't been so interested in purely heavy flavor, which is what you would 00:32:45.000 --> 00:32:52.000 would get from the Higgs so that can be complicated and also because the Higgs is light. The Jets don't have a lot of. 00:32:52.000 --> 00:33:06.000 Don't won't have a lot of particles in them either won't really be jets, unless the confinement scales very low, but then that makes the lifetimes long, so then that becomes an LLP project and not a semi final projects project, I mean it's not that this 00:33:06.000 --> 00:33:12.000 can't happen but you, you know, it depends which community you're working in and and who wants to study it. 00:33:12.000 --> 00:33:28.000 There has been plenty of work on, on Higgs decaying too complicated final states in the context of leptons jets, which which is, you know, so So the answer is definitely yes, but now we have to talk in details about okay what signature you want to look 00:33:28.000 --> 00:33:33.000 for is it cape is it possible within the context of that one. And so far. 00:33:33.000 --> 00:33:36.000 Okay, thank you for the clarification. 00:33:36.000 --> 00:33:41.000 So I want to see that a model. 00:33:41.000 --> 00:33:50.000 So, since we have no at the moment I would have still a long session to roll on I propose that we move to the next speaker. So I've seen this. 00:33:50.000 --> 00:33:57.000 They have violent isolation for my drum Anglo Saxon proper pronunciation. 00:33:57.000 --> 00:33:59.000 Oh yeah, no problem. Can you hear me. 00:33:59.000 --> 00:34:11.000 Yes. Good. would you like to try to share your slides. 00:34:11.000 --> 00:34:17.000 Okay, can you see 00:34:17.000 --> 00:34:25.000 you see the presentation. 00:34:25.000 --> 00:34:35.000 Perfect, tell you I saw. From now on you, in 10 minutes we'll let you know you have to list. Okay, so please go ahead. 00:34:35.000 --> 00:34:37.000 Okay. 00:34:37.000 --> 00:34:48.000 So, yes, my name is Dylan. I'm the one speaking on behalf of Paul Andrew Smith and then to sterilize fee on the recent paper we've done so here's the archetypal down here. 00:34:48.000 --> 00:34:53.000 I'm just going to quickly go over as well. 00:34:53.000 --> 00:35:03.000 So, the titles of it justice plays into the future. So emerging justice kind of the dark Sharon programs like the chocolate in the dark shower section. 00:35:03.000 --> 00:35:16.000 Although displacing the future we're looking more at the experiments so just in the previous topic, and I think Matthews point was that, depending on how you're looking at in terms of the practice sector. 00:35:16.000 --> 00:35:24.000 You can look at the shared regime and then you can look at the health direction. so we're kind of seeing only looked a lot that we can see an Atlas and CMS. 00:35:24.000 --> 00:35:42.000 Now let's see if we can leverage any of the experiments for for kind of putting that are seeing a merchant jets, or dark QCD in general. So, the talk before did a great job of keeps D sharp sector and showering style kind of fly through the beginning 00:35:42.000 --> 00:36:02.000 slides but obviously dark QCD have some can find good at sector that, as some number of dark colors, which can find that some QCD scale capacity like scale Lafferty mode you can motivated by symmetric dark matter where you have saved five times the size 00:36:02.000 --> 00:36:14.000 the size of a bottle confining scale and you have some dark baryons and dark Mason's with some lifetimes that don't indicate properly. 00:36:14.000 --> 00:36:22.000 But you embed this in the head and mouth right so we want our spectrum in the dark QCD to be relatively light in terms of physics as previously mentioned. 00:36:22.000 --> 00:36:49.000 So, if we want to have that light we kind of happen, kind of, sequestered and hidden often this data model there's not a lot of communication, other than say some. 00:36:49.000 --> 00:37:08.000 In our talk we're going to be focusing on are the studies focus specifically on what we call the scale, heavy scalar by fundamental subject. And this communicates that somehow the scale between the standard model and the CD widget space, and this CD Hidden 00:37:08.000 --> 00:37:17.000 Valley has you know some simplified spectrum which we can simulate through the Monte Carlo in terms of the head and belly module. 00:37:17.000 --> 00:37:38.000 So, you know we we take various standards parameters that we've used similar the original number two jets paper and a few others, where we have a seven numbers, seven flavors of dark, dark, sorry two flavors and three dark colors. 00:37:38.000 --> 00:37:58.000 So we have, say, unstable dark pions and we have properly decaying gross. So really we focused on our dark the dark pions that are on analogues as the long left particle that sets so this is when we receive showers with displays vertices and the dark 00:37:58.000 --> 00:38:14.000 rows are probably indicated the dark paths. So we follow this kind of just schematic way of advertising the Hidden Valley where we have exciting sector as a function of the dark biomass and the robots and the dark QCD constituent. 00:38:14.000 --> 00:38:17.000 Sorry, constituent cord masses. 00:38:17.000 --> 00:38:20.000 So we kind of consistently take that throughout the paper. 00:38:20.000 --> 00:38:35.000 So, having mediator, why did we choose this together by fundamental well it's convenient because this this sketch about fundamentals produced in production. 00:38:35.000 --> 00:38:50.000 the coupling in the Dark Sector. So if we had some vector A couple of things to set prime, we would have this coupling come up in terms of the production cross section, but since we're going to be estimating sensitivities that they fell out the experiments 00:38:50.000 --> 00:39:03.000 this production scalar cross section can be estimated using their score production cross section and just knowing the number of college you have in your sector. 00:39:03.000 --> 00:39:08.000 So, we can talk about the show. So this is a plot. 00:39:08.000 --> 00:39:16.000 Shot earlier, which was my cute little protons variants, sorry Amazon's here, you know, medically we're showing the the production of that Prime but that could be any production mode. 00:39:16.000 --> 00:39:29.000 Here. Medically we're showing the the production of that Prime but that could be any production mode. We have that a shower naturalization the dog check shower that again we can do through Monte Carlo, and now we understand, to some degree, showering better 00:39:29.000 --> 00:39:45.000 than the hadron ization and the QC QC de like regime, let's let's do. So you know this decay the data could be the same as the Russian media or else, depending on the model, but then we have some long loops, articles, and our kids that are pions that 00:39:45.000 --> 00:39:54.000 decay back into the status of all that we see today. So we take the decay of the Standard Model be 100% in terms of cute cute bar. 00:39:54.000 --> 00:40:09.000 So we really just kind of can look at the dark clients themselves and kind of investigate that in terms of the parameters for our study. So the dark pile on that decay lifetime can be prioritized in terms of say the massive the mediator. 00:40:09.000 --> 00:40:24.000 The TV scale, the actual methods that are some particular constants and the QC QC decoupling, but really this this privacy really be summed up in controlled by industry right we have the mass of the media the mass of the dark. 00:40:24.000 --> 00:40:44.000 and then. 00:40:44.000 --> 00:40:50.000 we close the interaction points we see this this nice vertices more cluster together. 00:40:50.000 --> 00:40:53.000 Lower opening angles. 00:40:53.000 --> 00:40:59.000 But what happens if these lifetimes or crispy long stay longer than say meter. 00:40:59.000 --> 00:41:16.000 We get more characteristic LLP tickets. So now we're going to be looking at what happens this lot of dark clouds as they exist, much longer than we'd see it, Atlas and CMS and kind of see them as individual LPs at future. 00:41:16.000 --> 00:41:18.000 Long live particle experiments. 00:41:18.000 --> 00:41:32.000 So here's just, again, the previous work we can, you know, mostly about that lesson CMS now we're looking at the more you know LP experiments that are either transverse forward upstream or downstream. 00:41:32.000 --> 00:41:41.000 Here my very simple schematics of how I view them as boxes and cylinders, which is kind of motivated how we did our detector Monte Carlo. 00:41:41.000 --> 00:41:53.000 But we've looked at a few of these. So we've looked at a few of the transfers to the few before, just kind of sad face that seemed appropriate at the time, as well as the proposals that we had an access and that we've actually translated, something to 00:41:53.000 --> 00:42:14.000 produce constraints and sensitivities. So, just spoil our results. It seemed that the transfers to Texas were much better than the four detectors for the production and this is kind of, you know, motivated by this nice and like plot that was at a previous 00:42:14.000 --> 00:42:32.000 workshop, the chocolates why so many lie detectors. It's kind of like broke down the search limits or ranges for that lucky masses, for a lot of the transmits detectors and some of the four detectors in terms of the distance that interaction. 00:42:32.000 --> 00:42:34.000 So, 00:42:34.000 --> 00:42:48.000 we also produce you know like a plot in terms of Phi Theta range of just looking at how you know differently these things, experiments to cover in terms of the NGO space, the Codex be is shifted purpose they just opened up some overlap with the others 00:42:48.000 --> 00:42:53.000 so we can actually kind of differentiate the different experiments. 00:42:53.000 --> 00:43:00.000 And then obviously before detectors are so small in terms of that that Angela range that you can't even see them on the spot. 00:43:00.000 --> 00:43:14.000 So, what do we do well we just asked three these, these detector acceptances by just simple Monte Carlo so this is kind of discipline and kind of like the standard procedure for a lot of the papers and look at these LLP projections. 00:43:14.000 --> 00:43:28.000 A lot of them use analytical methods, we did something just a little bit more different where we just actually created detector volumes very simple detector volumes and just look at the detector acceptances given the events that we feel to it. 00:43:28.000 --> 00:43:39.000 But it's really just based on the branching ratio to the signal again which is basically the terms of the dark, dark pasta kqq bar. 00:43:39.000 --> 00:43:54.000 We again the probability that the vector accepted, acceptance, given by this expression the distance from the detector. Sorry. Android detective versus leaving the contactor based on the clues to the particle. 00:43:54.000 --> 00:44:07.000 As estimated through a little Monte Carlo, and then we know the production sample size because we know the production cross section podcast we're using the scanner by fundamental as, as our media channel. 00:44:07.000 --> 00:44:10.000 So in this case we can 00:44:10.000 --> 00:44:24.000 look at the contours of the number of the cave dark pions that we expect to see in each one of the experiments, based on the luminosity so the projects, as well as their assumptions on back property right so, you know, there could be some contentions 00:44:24.000 --> 00:44:27.000 like are these aggregate background free. 00:44:27.000 --> 00:44:45.000 No, that's not for me to say more realistic cuts of criteria, have been talked about for the different experiments, so say for Alex and codec speak. There are talks on how to tag or number of tracks based on how to use the energies are a little bit of 00:44:45.000 --> 00:44:56.000 the PTS are. So this is one example for one of the cuts for Alex they propose this you know if we have some number of tracks with some number of teaching. 00:44:56.000 --> 00:45:01.000 We can see that, you know, it doesn't change the course to too much but depending on their machines you're looking at. 00:45:01.000 --> 00:45:09.000 But yeah, these, these all assume background free without this this Rico line. So given that these are background free. 00:45:09.000 --> 00:45:16.000 One can say that these are representative of the confidence intervals for and greater than three. 00:45:16.000 --> 00:45:24.000 But, just looking at the plots, we can see that you know the lifetimes of these other functions that lifetimes. 00:45:24.000 --> 00:45:29.000 We expect to see majority of the case happening. 00:45:29.000 --> 00:45:39.000 When a dark pile is much lower than it is greater, based on the boost, you know, emerging just create high more complexities logical multiplicity. 00:45:39.000 --> 00:45:48.000 The lower the energy for pop dark pion and as we lower the mass of the dark time. We also lower exposed as well. 00:45:48.000 --> 00:45:56.000 Sorry. So when you have about a minute left things. Perfect. Thank you. So I have one more slide so these are just our tours. 00:45:56.000 --> 00:46:08.000 But then you can also look at just like visible at the Cape oxygen as well and you can also try to look at, you know, maybe, what are some best cuts we can use Facebook visible in the case of the dark products. 00:46:08.000 --> 00:46:22.000 So we also just look at the hg distribution of what they started decay into for the experiments. And this can be used to kind of estimate a lot of some great content or tagging we can do when outside of just looking at the number of the case and then 00:46:22.000 --> 00:46:27.000 we can also look at the four detectors but they're only sensitive to channel so I won't talk too much about that. 00:46:27.000 --> 00:46:42.000 But in that case it's a channel that we're looking at in terms of the media exchange is not independent coupling so it's hard for us to put anything more than just a luminosity pop ability constraint on there or projection. 00:46:42.000 --> 00:46:55.000 So, in summary, just saying that an emergent doesn't always produce something novel in terms of signatures and that theory landscape for a low lifetime or James but do an amateur that shall we say it is the highlight times, and we can promise that hopefully 00:46:55.000 --> 00:47:08.000 the future of the experiments transmits detectors are more sensitive for each phase in terms of the traditional production they were looking at. And then the T channel speller exchange doesn't have some sensitivities and the fluoridation regime. 00:47:08.000 --> 00:47:13.000 But we suffer from the dependence in terms of the dark QC decoupling scale. 00:47:13.000 --> 00:47:30.000 But yeah so that's all for my talk edited if anybody has any questions, please. 00:47:30.000 --> 00:47:33.000 Perfect. Yeah. Any questions. 00:47:33.000 --> 00:47:45.000 Yeah. Was there any fans but I guess the final session was a great idea 00:47:45.000 --> 00:47:48.000 to my soul Giovanna Please go ahead. 00:47:48.000 --> 00:48:04.000 Hi, thanks to you know, I'm not sure, quite understood it when you calculate basically the same. We want the gondola the capabilities for your lamb to the game within several within the acceptance of the different apart the doctors were transferred to 00:48:04.000 --> 00:48:20.000 doctors, but then you have another efficiency there, which is like hot in your formula so I understand the acceptance which is laid out village probability, but then this efficiency, how do you look for example for my food. 00:48:20.000 --> 00:48:27.000 How do you quantify is a sort of simulation beyond. 00:48:27.000 --> 00:48:30.000 Like the doctor simulation. Yeah. 00:48:30.000 --> 00:48:44.000 Yeah. So this is it so this is everything in terms of just the probability of actually getting into K into the detector. This doesn't tell us anything about whether they will say, measure the basically became products from that. 00:48:44.000 --> 00:49:05.000 So, and this this is more of just like a cut efficient state. So, it's a way of saying, well, based on the physical attack a physical energy or the physical tracks and the volume, how likely are you able to actually reconstruct that maybe they're there 00:49:05.000 --> 00:49:08.000 to diffuse low PT low energy. 00:49:08.000 --> 00:49:15.000 You don't actually measure that so this is just the basically the efficiency of everything else other than just the probability to came to actually factor. 00:49:15.000 --> 00:49:34.000 Right so so sorry so this HD so you basically reconstruct the Jets. Right. Yeah, we don't we don't reconstruct the jets in terms of, like, education level information. 00:49:34.000 --> 00:49:47.000 Okay. Yeah, thank you thank you just make sure I understand, no good. Yeah, That's actually one of my questions too. 00:49:47.000 --> 00:50:00.000 Sorry You said it in the pocket I was distracted. Can you please tell me again by four teachers do you have more sensitivity. 00:50:00.000 --> 00:50:07.000 So, the teacher. Yes. So in terms of the chat or exchange. 00:50:07.000 --> 00:50:24.000 This is something that has been seen in previous studies, and this is just something that we're seeing in terms of what gives us, but with the team channel you. 00:50:24.000 --> 00:50:34.000 You're changing the, the media is I think in your previous talking about teach at all in terms of what we're calling a production, so maybe there's like a discrepancy there. 00:50:34.000 --> 00:50:49.000 But in this case, multi channel exchange, you should have more boosting in that Ford region, where I'm trying to understand because I would imagine, boosting to happen with no sorry yes okay fine I understand, sorry. 00:50:49.000 --> 00:50:50.000 You're right. 00:50:50.000 --> 00:50:54.000 Yeah, no, no, it took a while to wrap my head around it as well. 00:50:54.000 --> 00:51:01.000 But yeah, the, what it suppresses the fact that we can actually get this is an actual costs extra measures. 00:51:01.000 --> 00:51:04.000 So I mean, independent of the dark. 00:51:04.000 --> 00:51:06.000 Thanks very much. 00:51:06.000 --> 00:51:17.000 Okay, so we think you will also speak as a session within the last conversation, and we reconvene at 16, whereas lately, slightly delayed. 00:51:17.000 --> 00:51:36.000 So, take a quick break and come back.