1 00:00:01,770 --> 00:00:06,810 Thank you very much, then I just thought so, I'm going to talk about the 2 00:00:07,080 --> 00:00:12,570 measurements with Alice, mostly substructure, that cone and challenges. 3 00:00:13,260 --> 00:00:13,800 And 4 00:00:15,240 --> 00:00:16,800 in this talk, I will cover 5 00:00:19,080 --> 00:00:24,450 groups groom the jet substructure measurements of the jet of the dead code 6 00:00:25,080 --> 00:00:31,980 and Diem as long as in jets as well as longer seen jets. So, this way we can gain 7 00:00:31,980 --> 00:00:40,110 some understanding on what tests any more than that we have against the results. We 8 00:00:40,110 --> 00:00:46,680 can also test centralization and have a look at flavor dependent production and 9 00:00:46,800 --> 00:00:51,150 fragmentation. And of course, as peak results, they serve as these nine for the 10 00:00:51,150 --> 00:00:57,300 heavy ion results which we have also very nicely results. Unfortunately, I cannot 11 00:00:57,300 --> 00:00:58,680 cover them in this talk. 12 00:01:00,000 --> 00:01:02,400 So, in Allis, we 13 00:01:03,840 --> 00:01:11,610 identify jets in two ways. First we just measure charged particle jets that means 14 00:01:11,610 --> 00:01:16,980 that we collect all the charged particles corresponding to one jet in the time 15 00:01:16,980 --> 00:01:24,330 projection chamber and building a tracking system. And this is good because it has a 16 00:01:24,330 --> 00:01:32,520 large, larger acceptance. So full azimuth coverage, and also it's somewhat easier 17 00:01:32,520 --> 00:01:40,410 experimentally. On the other hand, it's still this is the neutral particles. So, 18 00:01:40,890 --> 00:01:45,840 for that we extend our charges measurements to four jets with the use of 19 00:01:45,840 --> 00:01:52,440 the electromagnetic calorimeter. Of course, this allows for direct theory 20 00:01:52,440 --> 00:01:56,160 competition on the other hand, it limits the acceptance and it makes the 21 00:01:56,160 --> 00:02:03,630 measurement technically more challenging as forehead flavor, we mostly identify 22 00:02:03,630 --> 00:02:10,050 them in the inner tracking system, which is a silicone tracker detector system. And 23 00:02:10,290 --> 00:02:16,980 it's very fine resolution makes it possible to find heavy flavor with the 24 00:02:16,980 --> 00:02:27,390 secondary vertex timing algorithms. So the first topic is the jet substructure via 25 00:02:27,390 --> 00:02:34,980 grooming. And this way we want to access the hot bottom structure of the jets and 26 00:02:34,980 --> 00:02:40,410 want to basically get rid of all the underlying events and centralization. That 27 00:02:40,830 --> 00:02:47,310 is also cluster IDs into a chat. So, this way we can directly compare the results to 28 00:02:47,310 --> 00:02:56,670 QC calculations. What we use is softer grooming, which aims to remove large NGOs 29 00:02:56,670 --> 00:03:02,250 software creation and what we do is to request it to chat with the Cambridge an 30 00:03:02,250 --> 00:03:06,510 algorithm that is an Angular ordered algorithm, so most more or less follows 31 00:03:06,510 --> 00:03:13,920 the development of the chat. And then interactively remove the sub branches that 32 00:03:13,920 --> 00:03:21,300 don't fulfill the so called sub drop condition. That is a minimum criterion on 33 00:03:21,300 --> 00:03:31,050 the, on the softer from over splitting. And there's also there's a general an 34 00:03:31,050 --> 00:03:37,080 overall cart value this the cart and there's also a parameter beta which which 35 00:03:37,080 --> 00:03:43,680 determines the angle of the splitting. So basically, how much of the source code in 36 00:03:43,680 --> 00:03:50,730 irradiation is removed from the jet and that's for variables we go for the 37 00:03:51,000 --> 00:03:58,530 substructure variable z, which is basically the the momentum friction taken 38 00:03:58,530 --> 00:04:05,730 away by the subletting process. And then the groom drave uses Sita g which is 39 00:04:06,090 --> 00:04:11,820 proportional to the angle between the leading assembling prom and then we count 40 00:04:12,030 --> 00:04:17,490 the number of soft rock splittings this recall NSD So, the number of splittings 41 00:04:17,490 --> 00:04:27,960 there the soft rock conditions for yield the first results I show is Fuji x 42 00:04:28,560 --> 00:04:35,670 momentum fraction in PP collisions and this is in three momentum windows and in 43 00:04:35,670 --> 00:04:40,890 the lowest momentum window you can see and hear the different colored colors 44 00:04:40,950 --> 00:04:47,580 correspond to different jet radiate or resolution parameters. And on the left 45 00:04:47,580 --> 00:04:54,780 most books solo or momenta, you can see that the jet structure slightly depends on 46 00:04:54,780 --> 00:05:01,920 the on the resolution parameter, especially at low CG values. On the other 47 00:05:01,920 --> 00:05:07,020 hand towards high PT, there is basically no dependence on that. This is easily 48 00:05:07,050 --> 00:05:10,950 understandable because like at high PE teachers are more committed. So, they are 49 00:05:10,950 --> 00:05:15,600 more contained even in the smaller resolution parameter chess. 50 00:05:19,350 --> 00:05:22,320 This next result is softer blooming 51 00:05:23,640 --> 00:05:31,020 over charged jets and here we tune the beta parameters. So, that is the 52 00:05:31,290 --> 00:05:38,610 angularity condition. And what we see is that there is a rather slight dependence 53 00:05:39,210 --> 00:05:45,060 on the beta beta whether depending on which momentum window we are looking at. 54 00:05:45,990 --> 00:05:51,720 Nothing very harsh here, and the transaction or lyric fixes by Ctr. On the 55 00:05:51,720 --> 00:05:56,220 other hand, if we go to the difference for iva, theta G, then 56 00:05:57,570 --> 00:05:59,940 we can see that they 57 00:06:01,530 --> 00:06:06,600 structure changes a lot in theater Gina changes the beta parameters. So, the 58 00:06:06,600 --> 00:06:14,220 different colors correspond to different sheet shapes in TTG This is especially 59 00:06:14,220 --> 00:06:20,760 apparent in the high PT window to the right side. So, this provides a very nice 60 00:06:20,760 --> 00:06:26,190 differential possibility to to explore the contributions from different parts and he 61 00:06:26,190 --> 00:06:34,290 can have many stages just running smoother comparisons. Then coming to the heavy 62 00:06:34,290 --> 00:06:42,270 flavor results, first one I would like to show is the dead code. So if we consider a 63 00:06:42,270 --> 00:06:48,750 radiator that is massive, then radiations towards small angles, forward emission 64 00:06:48,750 --> 00:06:58,170 will be suppressed. And this way, we can see a deflated cornice and that cone if 65 00:06:58,170 --> 00:07:03,900 the radiator is a is a heavy question work. So this was done in lab in actually 66 00:07:03,900 --> 00:07:12,660 adapted in a indirect measurement where they look for jet fragments in different 67 00:07:12,660 --> 00:07:21,300 angles from the jet axis and the show of the heavy and lastly her jets beauty to 68 00:07:21,540 --> 00:07:28,620 you the escorts here and one can see that towards small angles to the left side of 69 00:07:28,620 --> 00:07:35,070 the plot, there is a depletion actually, but this was of course in a low low 70 00:07:35,070 --> 00:07:41,070 background environment in a plus t minus collisions. So, this indirect way doesn't 71 00:07:41,070 --> 00:07:50,100 work in PvP. So, but is done analysis actually is the following that we use a 72 00:07:50,100 --> 00:07:55,500 sequence for the clustering and the re clustering similar to the sort of methods 73 00:07:56,310 --> 00:08:02,520 we take all this free things and put it into the plain, this is where one of the 74 00:08:02,520 --> 00:08:08,550 variables This is an Angular variable, actually the low angles are on the right 75 00:08:08,550 --> 00:08:14,160 side and the and the large angles are on the left side. The other however, is the 76 00:08:14,970 --> 00:08:20,610 momentum scale of the splitting. And here already one can see that the team has on 77 00:08:20,610 --> 00:08:26,550 the left side are a little bit different than the inclusive sorry, the digits on 78 00:08:26,550 --> 00:08:31,440 the left side and a little bit different from the inclusive checks on the right 79 00:08:31,440 --> 00:08:38,220 side. And of course, there is hydronic contamination hasn't been the case and 80 00:08:38,220 --> 00:08:43,230 background, but most of the background can be get written off by applying just the 81 00:08:43,230 --> 00:08:50,010 condition in the in the momentum scale Kp so this is what was done with different 82 00:08:50,010 --> 00:08:56,610 Katie cuts. And then what is done the analysis just to the divide these two 83 00:08:56,610 --> 00:09:04,350 plots and make a projection to the angular burrito. And here it is. What you see here 84 00:09:06,150 --> 00:09:13,920 on any of the plots is detect so inclusive ratios. And for large angles, that is the 85 00:09:13,950 --> 00:09:22,650 the low value, low values of the x axes. There is one, there is basically no 86 00:09:22,680 --> 00:09:27,930 difference between between heavy flavor and lifeless objects. On the other hand, 87 00:09:28,740 --> 00:09:36,210 there's a noticeable decrease towards small angles towards the right side of the 88 00:09:36,210 --> 00:09:43,380 plots. And also depending on how strong Katie Katie choose. The difference is 89 00:09:43,380 --> 00:09:49,830 getting bigger with a stricter Katie cots. Those two plots correspond to do two 90 00:09:49,830 --> 00:09:55,500 different energy ranges of the radiator particle. So this is the first measurement 91 00:09:56,130 --> 00:10:04,140 that was direct and showed us that that Koenigsegg TPP Coalition's. Here you can 92 00:10:04,140 --> 00:10:10,290 see model compare and model comparison with PTO sticks and generally, at least 93 00:10:10,290 --> 00:10:20,160 qualitatively, the PTO describes the data. So then going to Chad project production 94 00:10:20,160 --> 00:10:27,360 with the Jets, these are the cross sections of the zero jets in different 95 00:10:28,410 --> 00:10:37,080 collision energies. And here we just defined the jet as a jet. Where between 96 00:10:37,080 --> 00:10:43,110 the DEF CON there is a demand zone. And what you can see here on the middle plot 97 00:10:43,110 --> 00:10:51,780 70 is that PTR doesn't do really well. description of the of the years boom 98 00:10:51,780 --> 00:10:57,630 hacker does a better job, but the match is only marginal at lower pts. 99 00:11:00,000 --> 00:11:04,590 So there's still room for model development. Here you can see the chat 100 00:11:04,590 --> 00:11:14,550 fragmentation z parallel, actually by Charlie have a little bit an easier way to 101 00:11:15,450 --> 00:11:21,900 find the jet segmentation. Of course, it's this is not a complete, just threat 102 00:11:21,900 --> 00:11:27,240 substructure measurement, but just finally, the D measurement, having a look 103 00:11:27,240 --> 00:11:32,400 at how much or how much of the momentum it takes a we can already figure out 104 00:11:32,580 --> 00:11:37,530 something about the fragmentation. So, this is the sequela. And what we can see 105 00:11:37,530 --> 00:11:45,600 here is on the left side, you can see a plot at low jet momentum, the right side 106 00:11:45,600 --> 00:11:52,260 the type of momentum, and we can see that the Jets are the fragmentation is getting 107 00:11:52,770 --> 00:11:59,250 harder towards localities and software at high PCs. But one can already notice that 108 00:11:59,550 --> 00:12:09,540 the calculations from a plus pedia has have a trouble describing below PT shapes. 109 00:12:11,130 --> 00:12:17,490 So I, then I'm putting side by side. The beam as always, we'd love to see love to 110 00:12:17,490 --> 00:12:24,330 see is a Shan barrio. And generally one can see very similar trends to the demand 111 00:12:24,330 --> 00:12:29,850 zones. Of course the momentum range is a little bit different. And it's also 112 00:12:29,850 --> 00:12:36,930 noticeable that models are struggling to describe this just structural measure 113 00:12:38,550 --> 00:12:41,490 except for maybe PTA to soft UCB, which 114 00:12:43,770 --> 00:12:47,460 provides a good description at least within the errors, but the errors are 115 00:12:47,460 --> 00:12:53,880 rather large. And it already shows that in round three, it will be a great 116 00:12:54,270 --> 00:13:00,240 opportunity for us to explore the body on aneurysm fragmentation functions. Much 117 00:13:00,240 --> 00:13:10,950 better than what he had to walk us three more minutes. Thank you. So, finally, we 118 00:13:10,950 --> 00:13:16,290 have a very new measurement of digit substructure where actually the 119 00:13:16,290 --> 00:13:23,520 substructure is reconstructed with the same sort of our demo, including jets. And 120 00:13:24,000 --> 00:13:31,710 I'm just fleshing these three plots for three different substructure variables. 121 00:13:32,100 --> 00:13:39,360 And I would like to push to this rightmost plot the NSD number of soft rock 122 00:13:39,390 --> 00:13:44,610 splittings because there there is a very significant difference between the 123 00:13:44,610 --> 00:13:51,300 inclusive and the rejects, sort of splitting numbers. So, we see that there 124 00:13:51,300 --> 00:13:59,490 is much harder fragmentation of heavy flavor than the inclusive the Jets. Of 125 00:13:59,490 --> 00:14:04,200 course, in this The Mass Effects as well as the coral charge effects can play a 126 00:14:04,200 --> 00:14:12,270 role. And one is a detailed model comparisons to figure out what exactly is 127 00:14:12,270 --> 00:14:19,800 the physics behind that. And you can hear more details about that on next week's 128 00:14:19,800 --> 00:14:25,590 conference. And also there will be analysis public notes out very soon, 129 00:14:25,590 --> 00:14:34,230 probably in a matter of hours or maybe a couple of days. So, I came to my summary, 130 00:14:34,560 --> 00:14:40,260 I just presented just structure substructure measurements, we disrupt drug 131 00:14:40,260 --> 00:14:45,750 grooming MPP collisions from the collaboration and challenge at 132 00:14:45,750 --> 00:14:52,200 measurements MPP collisions include first measurement, direct measurement of the 133 00:14:52,200 --> 00:15:00,510 death cone effect and be zero as well as long to see for elemental fracture And the 134 00:15:00,510 --> 00:15:05,730 new measure mental the budget substructure. And this will serve as a 135 00:15:05,760 --> 00:15:13,230 great opportunity to explore the contributions of, of different pq CPS so 136 00:15:13,230 --> 00:15:19,920 hesitant ization effects and also to to understand flavor dependent fragmentation. 137 00:15:21,510 --> 00:15:27,180 So, just please stay tuned for new great research very soon and thank you very much 138 00:15:27,180 --> 00:15:28,140 for your attention. 139 00:15:30,810 --> 00:15:36,810 Thank you very much, Robert. For this, which results I'm sure there are some 140 00:15:36,810 --> 00:15:37,710 questions 141 00:15:50,400 --> 00:15:51,450 no questions 142 00:16:01,680 --> 00:16:07,320 Yeah, I actually have a small question about these LG measurements. Let me 143 00:16:07,320 --> 00:16:15,210 clarify which slide VISAGIE measurements a function of PT. The question is do you 144 00:16:15,210 --> 00:16:21,270 understand the small PT dependence for small radio? I'm not sure I see exactly 145 00:16:21,270 --> 00:16:22,380 where this is coming from. 146 00:16:30,690 --> 00:16:31,650 You in this one? 147 00:16:34,110 --> 00:16:40,620 Yes, this one. What 148 00:16:47,220 --> 00:16:49,830 is that? In case of? 149 00:16:52,740 --> 00:16:59,100 Is it okay? So basically if you go to, to smaller radio then 150 00:17:00,450 --> 00:17:02,460 Then what you see is that 151 00:17:03,899 --> 00:17:04,709 the Jets 152 00:17:06,509 --> 00:17:13,559 can pick up much more of the net known for two things, I think, sorry, I said larger 153 00:17:13,559 --> 00:17:22,469 API, it can pick up much more parts. And I think that there's a sensitivity to that. 154 00:17:24,149 --> 00:17:24,509 Yeah. 155 00:17:26,550 --> 00:17:28,110 I'm okay with this. 156 00:17:33,900 --> 00:17:34,920 Other questions? 157 00:17:41,160 --> 00:17:45,390 No. Then let's thank Robert again 158 00:17:46,800 --> 00:17:50,970 and we move on to the next talk.