1 00:00:01,439 --> 00:00:01,949 Yes. 2 00:00:02,609 --> 00:00:09,719 Okay, so, first of all, a big thank you for the organizers and the comenius to 3 00:00:09,719 --> 00:00:16,919 manage to organize this conference in these unusual conditions even more unusual 4 00:00:16,949 --> 00:00:24,329 now that zoom is not working. And yes, thanks for the opportunity to present 5 00:00:24,929 --> 00:00:33,269 these recent work on LFO we can QC the addictions for a boost to action. So, as 6 00:00:33,269 --> 00:00:40,409 you probably know, there was a big progress on the Kissimmee throne in the 7 00:00:40,409 --> 00:00:49,139 recent years and nowadays, all a diverse on processes are available at any law 8 00:00:49,439 --> 00:00:59,849 procedure. So these are was quite big enterprise and made possible by by by us 9 00:00:59,999 --> 00:01:09,389 People in the key steps that went into these calculations on the one hand to the 10 00:01:10,079 --> 00:01:16,289 automation of NLU calculations for dipoles on surplus one extra Jetta then of course, 11 00:01:16,529 --> 00:01:25,469 the to loop QC the amplitude. So, for the required processes and the combination of 12 00:01:25,469 --> 00:01:31,229 these two ingredients thanks to the structural metadata for the constellation 13 00:01:31,229 --> 00:01:39,629 of inverted singularities. So, now, all these is combined and made publicly 14 00:01:39,659 --> 00:01:46,289 available in the matrix program, which can compute as passed on level all processes 15 00:01:46,529 --> 00:01:53,339 with four electrons or neutrinos in all combinations, attend and look UCD any 16 00:01:53,339 --> 00:02:01,079 clues also to look into school lunch China's at any low capacity so, Here, you 17 00:02:01,079 --> 00:02:07,529 see an example of these in analog UCD predictions where you clearly see from the 18 00:02:07,949 --> 00:02:15,449 scale variation a dense that we have to see the uncertainties as more as a few 19 00:02:15,509 --> 00:02:25,229 percent. So this is really, really means a big potential in terms of possible a 20 00:02:25,229 --> 00:02:32,129 procedure on test EFT feats of surgeries with diverse backgrounds. And what you 21 00:02:32,129 --> 00:02:40,229 also see from the comparison with the data in the in the racial cloud, the dnn law is 22 00:02:40,229 --> 00:02:46,859 not enough, especially when you move back to higher duty here is giving that to MPT 23 00:02:46,919 --> 00:02:53,369 that is plotted. Well also the electroweak correction so we try to add that here in a 24 00:02:53,429 --> 00:02:59,999 greener start to be more and more. Well, also on the electroweak front, that was an 25 00:02:59,999 --> 00:03:07,289 Big progress and all the boson production and decay processes are now known as next 26 00:03:07,289 --> 00:03:14,489 leading order. So, typically, the electroweak effects are late, they're 27 00:03:14,819 --> 00:03:20,159 small, but they can become larger distributions, especially in the higher 28 00:03:20,489 --> 00:03:27,419 energy days. When you go far above the electroweak scale, there are a big stack 29 00:03:27,419 --> 00:03:34,739 of logs from the exchange of certain w bosons between external legs. And in the 30 00:03:34,739 --> 00:03:42,269 boson processes, these logs get the biggest coefficients. Then at IPT, you 31 00:03:42,269 --> 00:03:48,479 have also possible enhancements from gamma, gamma and gamma both channels, 32 00:03:49,019 --> 00:03:54,629 especially from these kinds of topology here where you have an exchange of W 33 00:03:54,629 --> 00:04:01,559 bosons in the tea channel. And thanks to the Luxor a PDF nowadays These photon use 34 00:04:01,559 --> 00:04:06,479 terms are pretty well under control. And finally, there are possible after effects 35 00:04:06,509 --> 00:04:14,699 from the well known fragmentation of photons typically in environment mass 36 00:04:14,729 --> 00:04:22,109 distribution. So, this talk is about the combination of an integral QC and an 37 00:04:22,109 --> 00:04:29,429 analog electroweak. And these are what was achieved by taking advantage of the 38 00:04:29,429 --> 00:04:31,379 automation of an electroweak 39 00:04:33,030 --> 00:04:39,690 analyzer week calculations with open loops, in particular the recently released 40 00:04:40,050 --> 00:04:48,090 open loops to action in combination with the unique Monte Carlo program and these 41 00:04:48,630 --> 00:04:55,410 fula no GCD electroweak automation is fully integrated in the matrix fame or, 42 00:04:55,920 --> 00:05:01,170 indeed gives a gopis no to these analog CD players. And then it was illegal 43 00:05:01,170 --> 00:05:06,300 recalculations with all the bows and processes that that you see in these 44 00:05:06,300 --> 00:05:16,290 tables with four three or two charged Neptune signatures. So, and let me move to 45 00:05:16,290 --> 00:05:25,830 the physics part of of this paper, what we did is a comparative studies of adaptive w 46 00:05:25,830 --> 00:05:33,660 pair and W set production focusing on the behavior of the vector bosons in the high 47 00:05:33,660 --> 00:05:39,690 PT regions. So, the high p region is the most interesting when you combine QC and 48 00:05:39,690 --> 00:05:45,660 electroweak corrections because both can get quite larger and they interplay can be 49 00:05:45,660 --> 00:05:46,170 quite 50 00:05:47,940 --> 00:05:53,340 so, here above you see the main players in this business some leading order that you 51 00:05:53,340 --> 00:05:59,880 have to schoolbag, channeling QC D, but then also the gamma gamma channel opens a 52 00:05:59,880 --> 00:06:06,810 door electroweak sector, the QC D and electroweak corrections to these channels 53 00:06:06,990 --> 00:06:16,440 are in these red and blue factors. And in addition, there are also an OECD, the 54 00:06:16,560 --> 00:06:24,660 looping use the golden rule, contributions that we treat separately. So, when we look 55 00:06:24,660 --> 00:06:32,220 at the interplay between a QC and a little weaker a good way of inspecting that is to 56 00:06:32,220 --> 00:06:39,630 compare two possible prescriptions for data combination, the most naive one is 57 00:06:39,630 --> 00:06:46,560 just an additive combination where nothing special happens. But then Alternatively, 58 00:06:46,620 --> 00:06:52,380 you can also argue that factorizing the two corrections that may be more 59 00:06:52,410 --> 00:06:57,930 appropriate in certain cases, and the difference between a district restriction 60 00:06:57,930 --> 00:07:05,250 sir consist of finance Stop a factor, where you have the two correction factors 61 00:07:05,250 --> 00:07:13,620 multiplied. So, this difference is an effect of the alpha alpha s. And when both 62 00:07:13,620 --> 00:07:18,300 corrections get large at high p t, it can be larger, and usually it should be 63 00:07:18,300 --> 00:07:23,820 interpreted as a larger source of uncertainties. But in some cases, there 64 00:07:23,820 --> 00:07:28,710 are theoretical arguments that support the factorize prescription So, the difference 65 00:07:29,010 --> 00:07:35,130 is not an uncertainty. And let me note in passing that actually our best or prefer 66 00:07:35,160 --> 00:07:41,760 the factorize combination is this formula at the bottom of the of the slide, where 67 00:07:41,760 --> 00:07:46,080 we actually excluded from the factorization of the photon induce the 68 00:07:46,170 --> 00:07:51,600 channels because in that case, the factorization is clearly not justified. 69 00:07:52,560 --> 00:07:58,710 So, and now, before we move to the plots, let's view let me give you the clue to 70 00:07:58,710 --> 00:08:06,600 interpret the beat You have electroweak and UCB corrections, a tie a PT and the 71 00:08:06,600 --> 00:08:14,460 key observation and is that everything depends on who the call is against the 72 00:08:15,150 --> 00:08:22,860 leading factor goes on when these leading bows on and gets very high p. So, he has 73 00:08:22,860 --> 00:08:28,620 two possible configurations that receive a completely different corrections, you have 74 00:08:28,620 --> 00:08:34,740 the case where the recoil is taken by a very hot jet. So, basically you are 75 00:08:34,740 --> 00:08:40,950 dealing dealing with vector boson plus jet production plus a softer, so, bleeding to 76 00:08:40,950 --> 00:08:46,140 the bosom of new this case, where the recall is mostly taken by the second 77 00:08:46,140 --> 00:08:51,780 vector boson. So, you you really have hard that the boson production plus and this 78 00:08:51,870 --> 00:08:58,650 bit of soft QC activity and in this second case, actually the corrections are 79 00:08:58,680 --> 00:09:04,380 dominated by an pseudocode blocks and in the electroweak sector and there are 80 00:09:04,380 --> 00:09:09,960 theoretical arguments that support the factorization. So, in this case, we don't 81 00:09:09,960 --> 00:09:18,030 have a larger of that alpha alpha is uncertainties. And and here, you see how 82 00:09:18,030 --> 00:09:25,830 the corrections look like for ww production. So, the observable here is the 83 00:09:25,890 --> 00:09:30,780 TT of this superseding vector goes on. So, when it gets hot, but then also the 84 00:09:30,780 --> 00:09:35,760 leading vector both of these either and you have these hard dipoles on 85 00:09:36,420 --> 00:09:44,370 configurations. So, in the middle initial plot, you see in red and blue and yellow 86 00:09:44,370 --> 00:09:50,610 and any low acuity corrections, which have a practice a moderator and you see that 87 00:09:50,610 --> 00:09:57,390 attend a low we get to these few percent level of scale uncertainties you see in 88 00:09:58,290 --> 00:10:03,540 light orange should the electroweak corrections, which get larger because of 89 00:10:03,540 --> 00:10:10,740 pseudocode for locks and they can be as large as 50% or so, in the TD energy 90 00:10:11,100 --> 00:10:18,300 regime. And as I said in these case the best combination is the factorized one. 91 00:10:18,660 --> 00:10:26,760 So, we incorporate the leading alpha alpha bias correction. So, and there are very 92 00:10:26,760 --> 00:10:33,330 little residual file size scale uncertainties, the dominant uncertainties 93 00:10:33,330 --> 00:10:39,240 are from two loop or pseudo blocks that are not included here and start planning 94 00:10:39,240 --> 00:10:43,740 booked and Lola at the level of 500. tv over 95 00:10:45,179 --> 00:10:46,019 five minutes. 96 00:10:46,830 --> 00:10:47,430 Yes. 97 00:10:47,970 --> 00:10:55,920 So, and here we see the same plot for the three possible they both on processes and 98 00:10:55,920 --> 00:11:01,050 the bottom line is that there are a little numerical differences But the quality of 99 00:11:01,050 --> 00:11:08,370 this picture is is the same. So, let me move on to the other scenario that I call 100 00:11:08,370 --> 00:11:16,980 the hardware vj configuration. So, these is the situation where the recoil of the 101 00:11:17,070 --> 00:11:26,400 leading balls on b1 is taken by a by a QC director and the softer balls on is very 102 00:11:26,760 --> 00:11:34,230 softer. So, what happens here is that if you leave these softer balls on 103 00:11:34,290 --> 00:11:40,950 unconstraint so you integrate over his face base, then you basically generate a 104 00:11:40,950 --> 00:11:47,220 larger a double locks of electroweak type that multiply the cross section for a 105 00:11:47,220 --> 00:11:56,940 heart boson plus jet production process and these amounts to a very large few city 106 00:11:56,940 --> 00:12:04,110 corrections that can be as larger as a factor As we will see and something 107 00:12:04,110 --> 00:12:10,140 similar happened on the site on the electroweak corrections, there is these 108 00:12:10,230 --> 00:12:17,760 similar channels with a vector boson plus a half jet, where a softer W is radiated 109 00:12:17,880 --> 00:12:25,050 from an initial state gamma, these guys can also become a very large. So we deal 110 00:12:25,050 --> 00:12:29,850 with completely different have processes that we have no fluctuation of the PCB and 111 00:12:29,850 --> 00:12:36,360 electroweak corrections and and now we look at the behavior of the corrections 112 00:12:36,360 --> 00:12:45,450 for one upset bubble dot he's dominated by the vitriol, mainly the leading rhetoric 113 00:12:45,450 --> 00:12:53,550 polls on PT. So in the middle frame again, you see a huge a QC corrections are beyond 114 00:12:53,550 --> 00:13:02,640 the factor of 10 in the TV Effie john. Fortunately, These these huge effects do 115 00:13:02,640 --> 00:13:08,400 not continue the beyond any law. So there is no need to mention immediate for such 116 00:13:08,640 --> 00:13:15,000 logs and the end in local elections. So look at pretty stable. This is a was not 117 00:13:15,000 --> 00:13:19,830 the case for the electroweak direction some. So you don't you cannot resolve them 118 00:13:19,830 --> 00:13:25,920 in the media closet but you see in the lower floor the different ways of 119 00:13:25,920 --> 00:13:31,800 combining the electroweak reflections in pink, green and the dotted line, they give 120 00:13:31,830 --> 00:13:38,340 completely different answers. This is because you have to be connected pseudo 121 00:13:38,340 --> 00:13:48,390 flocks that cancel against very big positive photon involves initiated 122 00:13:48,390 --> 00:13:52,830 contributions that I showed in the previous slide. And depending on how you 123 00:13:52,830 --> 00:13:57,930 combine things, so one of the other winner cancel against each other and the 124 00:13:57,930 --> 00:14:04,230 difference is a very big theoretical uncertainty that basically spoils the high 125 00:14:04,290 --> 00:14:12,600 any low procedure on a tight possible solution sir, on the essentially the 126 00:14:12,600 --> 00:14:17,550 problem can be solved that by adding the dominant missing corrections above that 127 00:14:17,550 --> 00:14:25,290 alpha alpha and these are the electroweak corrections to hard v jet configurations 128 00:14:25,290 --> 00:14:32,700 plus plus one or softer vector models. There is a technique emerging techniques 129 00:14:32,730 --> 00:14:40,440 to to do these NT it was actually recently tested for WP production in a paper that 130 00:14:40,440 --> 00:14:47,940 was posted just just yesterday. But these is not available for anyone to look at. 131 00:14:47,940 --> 00:14:54,030 So, what we did in our paper is actually to veto these problematic retread 132 00:14:54,300 --> 00:15:00,870 configurations using what we may call a mighty agent veto. So, basically We allow 133 00:15:01,950 --> 00:15:13,200 for an amount of jet translates the energy a also at most 20% of the electronic 134 00:15:13,200 --> 00:15:19,560 transfer energy in the in the event and you see on the right to the effect of the 135 00:15:19,560 --> 00:15:26,610 veto. So, basically you see that this is the ratio of the potential to proposals 136 00:15:27,090 --> 00:15:31,680 and you have a big plateau and an investment that when the second goes on 137 00:15:31,680 --> 00:15:38,490 becomes softer and smaller at one two and this is completely cut away but these 138 00:15:38,730 --> 00:15:40,410 these videos in 139 00:15:41,700 --> 00:15:49,050 the half the day goes on sir plus software to see the activity or close to to the 140 00:15:49,140 --> 00:15:56,850 right side of visa is blocked up. And the end here you see the a the corrections are 141 00:15:56,850 --> 00:16:02,700 they out they look like I don't need to do this These are so these again is the 142 00:16:02,790 --> 00:16:10,680 problematic observables the leading bows on PT, but now applying such an HSP and 143 00:16:10,680 --> 00:16:18,090 basically what you're saying here is the well behaved the shape of the GCD and the 144 00:16:18,090 --> 00:16:22,140 electroweak corrections and the combinations that we had at the beginning 145 00:16:22,620 --> 00:16:30,870 in upset levels dominated by heart and eyeballs on topologies. And I can already 146 00:16:30,870 --> 00:16:38,130 conclude conclude that so as I said that and now, the end Look, your CD collections 147 00:16:38,130 --> 00:16:42,780 combined with Angular weaker are available for 148 00:16:44,159 --> 00:16:45,749 so my time is over. 149 00:16:47,580 --> 00:16:55,770 And available for all adaboost processes with option net, the neutrino decays, the 150 00:16:55,770 --> 00:17:02,340 code should be published soon and that's it. stress that high PT you can have large 151 00:17:02,340 --> 00:17:08,940 church UCD and electrical weak effects and a non trivial interplay. And the key to 152 00:17:08,940 --> 00:17:14,010 understand these is this categorization into half the balls on top of boson plus 153 00:17:14,010 --> 00:17:21,810 jet categories. In one case, the big corrections are well under control with 154 00:17:22,470 --> 00:17:30,120 good precision up to relatively high a TT. In the other case, there are large alpha 155 00:17:30,120 --> 00:17:37,470 face uncertainty. And these requires either a veto or a multitrack metric 156 00:17:38,070 --> 00:17:41,790 approach. That's all. Thanks. 157 00:17:43,740 --> 00:17:50,100 All right. Thank you, Stefan. Oh, so we have time for a few questions. We don't 158 00:17:50,100 --> 00:17:55,890 have this raise hands feature in video. So I guess if you have a question you should 159 00:17:55,890 --> 00:17:58,830 just unmute, introduce yourself and ask it 160 00:18:10,170 --> 00:18:15,240 I would actually have a question about this Maya Jedi two that you applied, how 161 00:18:15,270 --> 00:18:20,340 does that agree with what's actually being done in the experimental analysis of this 162 00:18:20,340 --> 00:18:21,150 process? 163 00:18:22,650 --> 00:18:31,140 So, I should say that the entire study that we have presented here is a not. So, 164 00:18:31,200 --> 00:18:38,100 if theory then For what concerns the choice of the of the cat's in the 165 00:18:38,100 --> 00:18:48,210 observables. And what that can say. So, clearly, we have defined the distance with 166 00:18:48,330 --> 00:18:55,440 energies in a way that can be implemented in experimental analysis, but it should 167 00:18:55,440 --> 00:19:01,950 just be considered as as one out of many opportunities. So many possibilities. So, 168 00:19:01,950 --> 00:19:07,590 the message here is that you have you need something that super assists, these have 169 00:19:07,590 --> 00:19:13,980 to be trapped configurations and allows the heart that I wasn't configurations to 170 00:19:13,980 --> 00:19:19,950 gather with enough soft TCP activity in order not to generate a CD and say 171 00:19:19,980 --> 00:19:25,260 uncertainties, and let me measure that one important as definitive would be to 172 00:19:25,290 --> 00:19:31,380 formulate as such such a veto directly in terms of the of the movement of the 173 00:19:31,380 --> 00:19:36,480 dipoles and some data decay products. So without imposing any restriction on the, 174 00:19:37,020 --> 00:19:42,630 on the jet activity, but just that, requiring that the second factor is having 175 00:19:42,630 --> 00:19:48,930 enough, okay, but it's not, you know, a precise recommendation for the experiment. 176 00:19:48,930 --> 00:19:55,620 It's more like general qualitative methods of how to, to deal with these topologies 177 00:19:55,920 --> 00:20:00,660 All right, but if the experimentalists would want to use you probably Grant once 178 00:20:00,660 --> 00:20:05,790 it's public, right, they would have to do something that avoids to stainless Legion. 179 00:20:05,850 --> 00:20:06,180 Right? 180 00:20:08,340 --> 00:20:15,960 So the program, I mean, works and produces results, and wasn't inclusive case. And so 181 00:20:15,960 --> 00:20:22,530 these are the plots I showed here, right? And then and actually, if you stay on 182 00:20:22,530 --> 00:20:30,180 there, say 300 gb or so, you see that you have slightly bigger uncertainties as 183 00:20:30,180 --> 00:20:36,300 compared to 10 and rocky city, but still, we are in good shape. Yeah. So it's really 184 00:20:36,300 --> 00:20:41,370 a problem now, you know, for the future when there will be high statistics in the 185 00:20:41,370 --> 00:20:52,170 TV, Ranger. And yes, there, what one has to implement a solution? I think the, you 186 00:20:52,170 --> 00:20:56,280 know, the clean solution is this management approaches that I mentioned 187 00:20:56,280 --> 00:21:01,470 that should be extended to any law but still experiments that is can implement 188 00:21:01,470 --> 00:21:10,290 the data the fieldwork tasks. So, it is not I mean the the matrix code is fully 189 00:21:10,290 --> 00:21:13,080 flexible you can implement any observable and any 190 00:21:14,730 --> 00:21:17,220 things, any other questions 191 00:21:19,109 --> 00:21:24,509 any other question on slide 13 before let me say that indeed the dick study 192 00:21:24,539 --> 00:21:30,239 experiments are seriously considering to make the analysis we discuss my name is 193 00:21:30,239 --> 00:21:31,229 machete chakra. 194 00:21:32,550 --> 00:21:38,250 So, on slide 13 Stefano, I would like to and so, why there is a different behavior 195 00:21:38,250 --> 00:21:41,970 between sunset dr adapt to that is that concerning these 196 00:21:43,950 --> 00:21:47,850 corrections, these differences between the two prescription 197 00:21:49,920 --> 00:21:52,440 right. So, 198 00:21:56,520 --> 00:22:02,220 what happens here is that, so different things happen so, on the wire aside, you 199 00:22:02,220 --> 00:22:07,530 see that the QC corrections still grow. And in particular, in the case of W that 200 00:22:07,560 --> 00:22:13,800 that gets as large as a factor of two in the day. So actually, we still have a bit 201 00:22:13,830 --> 00:22:18,510 too much of these Harper legit contributions around that anyone should 202 00:22:18,510 --> 00:22:23,970 render the veto slightly more stringent. So, we did not try to optimize it at all, 203 00:22:23,970 --> 00:22:32,730 but one should try to do that, in these both reduce these differences. 204 00:22:34,530 --> 00:22:35,070 And 205 00:22:35,790 --> 00:22:41,010 so that's the main origin of the of the significant difference between between the 206 00:22:41,010 --> 00:22:45,660 different combinations. And then what happens is also that the electroweak 207 00:22:45,660 --> 00:22:48,840 corrections behave a little differently, 208 00:22:50,070 --> 00:22:52,920 but intuitively similar, but potica deliberated differently. 209 00:22:53,310 --> 00:23:02,280 And this is a very subtle interplay, play and be Okay, don't go into the details 210 00:23:02,550 --> 00:23:08,670 here. This is something that is well understood the bat read there, except the 211 00:23:08,670 --> 00:23:08,910 last 212 00:23:10,380 --> 00:23:13,050 feature of the pseudocode for electrical weak locks. 213 00:23:16,199 --> 00:23:16,949 Okay. 214 00:23:17,759 --> 00:23:23,849 All right. Thank you. So let's thank Stefano again. Even though we can't 215 00:23:23,849 --> 00:23:24,149 articulate