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Neural networks for TeV cosmic electrons identification on the DAMPE experiment DAMPE实验中TeV宇宙电子识别的神经网络
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0045
D. Droz, A. Tykhonov, Xin Wu, M. Deliyergiyev
{"title":"Neural networks for TeV cosmic electrons identification on the DAMPE experiment","authors":"D. Droz, A. Tykhonov, Xin Wu, M. Deliyergiyev","doi":"10.22323/1.398.0045","DOIUrl":"https://doi.org/10.22323/1.398.0045","url":null,"abstract":"The past decades have witnessed the deployment of a new generation of cosmic ray (CR) observatories with unprecedented sensitivity and complexity, pushing towards ever-higher energies. To face the challenges of the multi-TeV domain, such instruments must be accompanied by equally powerful analysis techniques, able to exploit as much information as available. For example, the machine learning tool set may provide the needed techniques. We present a neural network optimised for the identification of multi-TeV electrons on DAMPE, a calorimetric spaceborne CR observatory with among other objectives the measurement of cosmic electrons up to 10 TeV. This constitutes a particularly challenging endeavour due to both the soft electron spectrum and the large proton background. The developed neural network significantly outperforms the more traditional cut-based approach, achieving a much lower proton contamination in the multi-TeV domain with a high signal efficiency, and retains its accuracy when transposed from Monte Carlo to real data.","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133931631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurement of the Drell-Yan transverse momentum dependence over a wide mass range at 13 TeV from CMS CMS测量Drell-Yan在13tev宽质量范围内的横向动量依赖
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0336
Itana Bubanja
{"title":"Measurement of the Drell-Yan transverse momentum dependence over a wide mass range at 13 TeV from CMS","authors":"Itana Bubanja","doi":"10.22323/1.398.0336","DOIUrl":"https://doi.org/10.22323/1.398.0336","url":null,"abstract":"","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127614128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of cold aberrations on the longitudinal error signals and its compensation 冷像差对纵向误差信号的影响及其补偿
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0069
Priyanka Giri, D. Bersanetti, M. Boldrini, J. Casanueva Diaz, M. Cifaldi, V. Fafone, M. Lorenzini, D. Lumaca, I. Nardecchia, M. Pinto, A. Rocchi, E. N. Tapia San Martín, M. Valentini, M. Mantovani
{"title":"Effects of cold aberrations on the longitudinal error signals and its compensation","authors":"Priyanka Giri, D. Bersanetti, M. Boldrini, J. Casanueva Diaz, M. Cifaldi, V. Fafone, M. Lorenzini, D. Lumaca, I. Nardecchia, M. Pinto, A. Rocchi, E. N. Tapia San Martín, M. Valentini, M. Mantovani","doi":"10.22323/1.398.0069","DOIUrl":"https://doi.org/10.22323/1.398.0069","url":null,"abstract":"P. Giri, a,b,∗ D. Bersanetti, M. Boldrini, J. Casanueva Diaz, f M. Cifaldi, V. Fafone, M. Lorenzini, D. Lumaca, I. Nardecchia, M. Pinto, f A. Rocchi, C. Taranto, E. N. Tapia San Martín, M. Valentini, j ,k and M. Mantovani f Università di Pisa, I-56127 Pisa, Italy Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy Istituto Nazionale di Fisica Nucleare, Sezione di Genova, I-16146 Genova, Italy Università di Roma “La Sapienza”, I-00185 Roma, Italy Istituto Nazionale di Fisica Nucleare, Sezione di Roma, I-00185 Roma, Italy f European Gravitational Observatory (EGO), I-56021 Cascina, Pisa, Italy Università degli Studi di Roma Tor Vergata,I-00133,Rome, Italy Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, I-00133 Roma, Italy Nikhef, Science Park 105, 1098 XG Amsterdam, Netherlands Università di Trento, Dipartimento di Fisica, I-38123 Povo, Trento, Italy Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics and Applications, I-38123 Povo, Trento, Italy E-mail: priyanka.giri@pi.infn.it","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124288229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurements of the R value at BESIII BESIII的R值测量
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0338
M. Irshad
{"title":"Measurements of the R value at BESIII","authors":"M. Irshad","doi":"10.22323/1.398.0338","DOIUrl":"https://doi.org/10.22323/1.398.0338","url":null,"abstract":"","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116455860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First inverse moment of the doubly-heavy baryon distribution amplitude from HQET sum rule 从HQET求和规则得到的重重子分布振幅的第一逆矩
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0349
A. Shukhtina, Alexander Parkhomenko
{"title":"First inverse moment of the doubly-heavy baryon distribution amplitude from HQET sum rule","authors":"A. Shukhtina, Alexander Parkhomenko","doi":"10.22323/1.398.0349","DOIUrl":"https://doi.org/10.22323/1.398.0349","url":null,"abstract":"Heavy-quark symmetry (HQS), despite being approximate, allows to relate dynamically many hadron systems. In the HQS-limit doubly-heavy baryons, whose dynamics is determined by a light quark situated in a color field of a static pair of heavy quarks, are similar to heavy mesons with a heavy antiquark. Non-local interpolation currents are introduced and corresponding matrix elements between the baryon and vacuum state are expressed in terms of light-cone distribution amplitudes. As well known, the first inverse moment of the leading twist -meson distribution amplitude (DA) is a very important hadronic parameter needed for an accurate theoretical description of -meson exclusive decays. It is quite natural that a similar moment of doubly-heavy baryons is of importance in exclusive doubly-heavy baryons’ decays. We obtain HQET sum rules for the first inverse moment based on the correlation functions containing nonlocal heavy-light operators of doubly-heavy baryons and their local interpolating currents.","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133073145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Subleading colour effects and spin correlations in the PanScales showers 泛尺度星雨的次领先色彩效果和自旋相关性
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0416
Ludovic Scyboz
{"title":"Subleading colour effects and spin correlations in the PanScales showers","authors":"Ludovic Scyboz","doi":"10.22323/1.398.0416","DOIUrl":"https://doi.org/10.22323/1.398.0416","url":null,"abstract":"In the context of the PanScales parton shower project, I describe two advances in the development of final-state parton showers with controlled logarithmic accuracy. The first (Ref. [1]) involves simple new algorithms to resolve the long-standing issue of incorrect subleading-colour contributions at leading logarithmic (LL) accuracy in dipoleand antenna-type final-state showers, and also enables the PanScales showers to obtain full-colour NLL accuracy for many observables. The second (Ref. [2]) concerns spin correlations, where we propose a spinor-product based implementation of the well-established Collins algorithm. We verify the logarithmic accuracy of the results with separate purely collinear calculations, using novel spin-sensitive jet observables that are of potential interest also for future experimental measurements.","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116599647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic-field influence on beta-processes in core-collapse supernova 磁场对核心坍缩超新星β过程的影响
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0048
A. Dobrynina, I. Ognev
{"title":"Magnetic-field influence on beta-processes in core-collapse supernova","authors":"A. Dobrynina, I. Ognev","doi":"10.22323/1.398.0048","DOIUrl":"https://doi.org/10.22323/1.398.0048","url":null,"abstract":"Neutrinos play a significant and sometimes even dominant role in all phases of the supernova explosion. The most important neutrino processes in a core-collapse supernova are beta-processes, which are responsible for the energy exchange between neutrinos and the matter and change a chemical composition of a medium. We investigate an influence of a magnetic field on betaprocesses under conditions of a supernova matter. For any magnetic field strength discussed in applications to astrophysical objects we obtain simple analytical expressions for reaction rates of beta-processes. In our analysis we use results of one-dimensional simulations of a supernova explosion performed with the PROMETHEUS-VERTEX code. We found that, the magnetic field with the strength B ∼ 1015 G suppresses the neutron production on several percents in comparison with the unmagnetized case. The obtained analytical expressions can be also applied for postmerger accretion discs.","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131988366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the cosmic muon rate nearby the Advanced Virgo detector at the end of the O3 run 在O3运行结束时，高级室女座探测器附近的宇宙介子速率的研究
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0059
F. di Renzo, N. Arnaud, Theodoros Avgitas, R. De Rosa, I. Fiori, C. Giunchi, K. Janssens, S. Katsanevas, A. Longo, J. Marteau, Marco Olivieri, M. Tringali, F. Paoletti, P. Ruggi
{"title":"Study of the cosmic muon rate nearby the Advanced Virgo detector at the end of the O3 run","authors":"F. di Renzo, N. Arnaud, Theodoros Avgitas, R. De Rosa, I. Fiori, C. Giunchi, K. Janssens, S. Katsanevas, A. Longo, J. Marteau, Marco Olivieri, M. Tringali, F. Paoletti, P. Ruggi","doi":"10.22323/1.398.0059","DOIUrl":"https://doi.org/10.22323/1.398.0059","url":null,"abstract":"Francesco Di Renzo,0,1,∗ Nicolas Arnaud, Theodoros Avgitas, Rosario De Rosa, Irene Fiori, Carlo Giunchi, 5 Kamiel Janssens, Stavros Katsanevas, Alessandro Longo, Jacques Marteau, Marco Olivieri, 9 Federico Paoletti, Paolo Ruggi and Maria Concetta Tringali Università di Pisa, I-56127 Pisa, Italy Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy Universite Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France European Gravitational Observatory (EGO), I-56021 Cascina, Pisa, Italy Università di Napoli “Federico II”, I-80126 Napoli, Italy 5 Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, I-56125 Pisa, Italy Universiteit Antwerpen, Prinsstraat 13, 2000 Antwerpen, Belgium Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, I-00146 Roma, Italy Institut de Physique Nucléaire de Lyon, Lyon, France 9 Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna, I-40128 Bologna, Italy E-mail: francesco.direnzo@df.unipi.it","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115740100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Construction and verification of analytical approximation of nonequilibrium neutrino distribution function in core-collapse supernova 核心坍缩超新星非平衡态中微子分布函数解析近似的构造与验证
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0052
E. Koptyaeva, A. Dobrynina, I. Ognev
{"title":"Construction and verification of analytical approximation of nonequilibrium neutrino distribution function in core-collapse supernova","authors":"E. Koptyaeva, A. Dobrynina, I. Ognev","doi":"10.22323/1.398.0052","DOIUrl":"https://doi.org/10.22323/1.398.0052","url":null,"abstract":"The local nonequilibrium neutrino distribution function in a core-collapse supernova is considered and two variants of its analytical approximation are suggested. The proposed analytical approximations are verified using the results of a one-dimensional simulation of neutrino propagation, performed self-consistently with hydrodynamics in Prometheus-Vertex code. It was shown that the approximation, based on a Fermi-like distribution of neutrino spectrum, agrees with results of Prometheus-Vertex simulation only in the inner parts of the supernova. Whereas the approximation based on alpha-fit of neutrino energy distribution, also known as Gamma-distribution, is more general and has no restrictions for application in any part of the supernova. The obtained results could be applied for estimation of various neutrino effects in supernova conditions without their direct inclusion in the explosion simulation.","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114816739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Search for contact interactions with inclusive jet production at the LHC at 13 TeV with CMS 用CMS在13tev的大型强子对撞机上寻找包含射流产生的接触相互作用
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) Pub Date : 2022-03-08 DOI: 10.22323/1.398.0337
Toni Maekelae, K. Lipka
{"title":"Search for contact interactions with inclusive jet production at the LHC at 13 TeV with CMS","authors":"Toni Maekelae, K. Lipka","doi":"10.22323/1.398.0337","DOIUrl":"https://doi.org/10.22323/1.398.0337","url":null,"abstract":"","PeriodicalId":218352,"journal":{"name":"Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128125983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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