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Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)最新文献

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Measurements of Single Top-Quark Production Using the ATLAS Detector at the LHC 利用大型强子对撞机的ATLAS探测器测量单个顶夸克的产生
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-03 DOI: 10.22323/1.321.0249
S. Mergelmeyer
{"title":"Measurements of Single Top-Quark Production Using the ATLAS Detector at the LHC","authors":"S. Mergelmeyer","doi":"10.22323/1.321.0249","DOIUrl":"https://doi.org/10.22323/1.321.0249","url":null,"abstract":"Recent measurements of the production of single top quarks in proton–proton collisions at a centre-of-mass energy of $sqrt{s}!=!13,mathrm{TeV}$ are presented. The analysed data with an integrated luminosity of $36,mathrm{fb}^{-1}$ was recorded using the ATLAS detector at the LHC. Differential cross sections for $tkern-0.08exW$ production were measured, an analysis of the quantum interference between $tkern-0.08exW$ and $tkern-0.04exbar{t}$ production was performed, and evidence for $tZ$ production was found. The results were compared with state-of-the-art theoretical calculations, and no significant deviations from the Standard Model expectations was observed.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133618276","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
PID performance of the ALICE-TOF detector at Run 2 ALICE-TOF检测器在运行2时的PID性能
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-03 DOI: 10.22323/1.321.0232
N. Jacazio
{"title":"PID performance of the ALICE-TOF detector at Run 2","authors":"N. Jacazio","doi":"10.22323/1.321.0232","DOIUrl":"https://doi.org/10.22323/1.321.0232","url":null,"abstract":"In these proceedings we report on the status of the ALICE Time-Of-Flight (TOF) detector. \u0000The running performance of the Run 1 (2009-2013) and Run 2 (2015-present) data taking campaigns are compared. \u0000The particle identification capabilities of the detector are presented and discussed in the light of the improved detector calibration that allowed to reach a timing resolution of 56 ps.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116345091","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: 7
Searches for new physics in final states with leptons with ATLAS 用ATLAS搜索轻子最终态的新物理
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-03 DOI: 10.22323/1.321.0273
Y. Okumura
{"title":"Searches for new physics in final states with leptons with ATLAS","authors":"Y. Okumura","doi":"10.22323/1.321.0273","DOIUrl":"https://doi.org/10.22323/1.321.0273","url":null,"abstract":"","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133101984","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
ATLAS Electron and Photon Trigger ATLAS电子和光子触发器
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-03 DOI: 10.22323/1.321.0027
J. Hoya
{"title":"ATLAS Electron and Photon Trigger","authors":"J. Hoya","doi":"10.22323/1.321.0027","DOIUrl":"https://doi.org/10.22323/1.321.0027","url":null,"abstract":"ATLAS electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential to record signals for a wide variety of physics: from the Standard Model processes to searches for new phenomena. To cope with ever-increasing luminosity and more challenging pile-up conditions at a centre-of-mass energy of 13 TeV, the trigger selections need to be optimized to control the rates and keep efficiencies high. The ATLAS electron and photon trigger in Run-2 is presented, including new techniques developed to maintain their high performance even in high pile-up conditions as well as the first efficiency measurements from the 2018 data taking.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128803451","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: 1
Searches for Z' gauge bosons predicted by lepton flavor and lepton flavor universality violating models with the CMS experiment at LHC 用大型强子对撞机的CMS实验寻找轻子味和轻子味普适违反模型预测的Z规玻色子
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-01 DOI: 10.22323/1.321.0272
A. Kalsi
{"title":"Searches for Z' gauge bosons predicted by lepton flavor and lepton flavor universality violating models with the CMS experiment at LHC","authors":"A. Kalsi","doi":"10.22323/1.321.0272","DOIUrl":"https://doi.org/10.22323/1.321.0272","url":null,"abstract":"The standard model conserves lepton flavor and lepton flavor universality although these do not follow \u0000from an underlying gauge symmetry. However, the discovery of neutrino oscillations and anomalies observed in B-meson decays indicate violation of lepton flavor and lepton flavor universality, respectively. Various scenarios beyond the standard model have been studied extensively by different experiments at the LHC. This talk presents recent searches for a new Z' boson predicted in the context of lepton flavor violation and lepton flavor universality violation models. The searches use a 13 TeV $pp$ collision data sample, collected by the CMS experiment at the CERN LHC.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130534784","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
The CMS Level-1 muon triggers for the LHC Run II 大型强子对撞机运行II的CMS 1级介子触发器
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-08-31 DOI: 10.22323/1.321.0070
I. Papavergou
{"title":"The CMS Level-1 muon triggers for the LHC Run II","authors":"I. Papavergou","doi":"10.22323/1.321.0070","DOIUrl":"https://doi.org/10.22323/1.321.0070","url":null,"abstract":"The CMS experiment implements a sophisticated two-level triggering system composed of Level- 1 (L1), instrumented by custom-design hardware boards, and a software High Level Trigger. A new Level-1 trigger architecture with improved performance is now being used to maintain high physics efficiency for the more challenging luminosity conditions experienced during Run II. The CMS muon detector contains complementary and partially redundant muon detection systems: the Cathode Strip Chambers (CSC), Drift Tubes (DT) and Resistive Plate Chambers (RPC). The upgraded L1 muon trigger combines information from these three detectors to reconstruct muons and obtain a better efficiency and lower rates. Algorithms for the selection of events with muons, both for precision measurements and searches for new physics beyond the Standard Model, are described in detail. The performance of the upgraded muon trigger system will be presented, based on proton-proton collision data collected in 2017.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121312683","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
Data-driven methods for estimation of misreconstructed object background in lepton final states with ATLAS at √s=13 TeV 基于数据驱动的轻子末态重构目标背景估计方法(√s=13 TeV)
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-08-31 DOI: 10.22323/1.321.0011
G. Ucchielli
{"title":"Data-driven methods for estimation of misreconstructed object background in lepton final states with ATLAS at √s=13 TeV","authors":"G. Ucchielli","doi":"10.22323/1.321.0011","DOIUrl":"https://doi.org/10.22323/1.321.0011","url":null,"abstract":"Neutrino mass generation is needed to explain neutrino oscillations. Several new physics models, such as left-right symmetric models or seesaw mechanisms, offer a solution and motivate searches for heavy bosons or heavy neutral leptons in either opposite-charge or same-charge leptons final states. This contribution discusses the challenging backgrounds for same-charge final states, either due to jets incorrectly identified as leptons or due to mismeasurements of the electron charge. The results presented here use the data collected by the ATLAS experiment at the LHC with a center-of-mass energy of $sqrt{s}=13 $ TeV.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122242314","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
Azimuthal correlations of D mesons with charged particles in pp collisions at √s = 13 TeV with the ALICE experiment at the LHC 在大型强子对撞机的ALICE实验中，√s = 13 TeV的pp碰撞中D介子与带电粒子的方位角相关性
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-08-31 DOI: 10.22323/1.321.0042
S. Sadhu
{"title":"Azimuthal correlations of D mesons with charged particles in pp collisions at √s = 13 TeV with the ALICE experiment at the LHC","authors":"S. Sadhu","doi":"10.22323/1.321.0042","DOIUrl":"https://doi.org/10.22323/1.321.0042","url":null,"abstract":"The study of azimuthal correlations of heavy-flavour hadrons with charged particles is an important tool to characterize charm fragmentation processes. It gives insight into the modi- fication of charm-jet properties in nucleus-nucleus collisions and the mechanisms through which heavy quarks in-medium energy-loss takes place. Studies in pp collisions, besides constituting the necessary baseline for nucleus-nucleus measurements, are important for testing pQCD-inspired Monte Carlo generators. In this proceeding, the latest heavy-flavour correlation results at mid- rapidity with the ALICE detector in pp collisions at 13 TeV are reported. The results are compared with pp ps 7 TeV and p-Pb at 5.02 TeV data. The yield of charged particles in the near-side correlation peak and the peak width measured in different systems are compatible, within the uncertainties, and described by Monte Carlo simulations.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"465 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125826540","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
A Brief Discussion on the Performance of the MoEDAL and the LHCf Experiments 浅谈MoEDAL和LHCf实验的性能
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-08-31 DOI: 10.22323/1.321.0233
A. Santra, MoEDAL, LHCf Collaborations
{"title":"A Brief Discussion on the Performance of the MoEDAL and the LHCf Experiments","authors":"A. Santra, MoEDAL, LHCf Collaborations","doi":"10.22323/1.321.0233","DOIUrl":"https://doi.org/10.22323/1.321.0233","url":null,"abstract":"The Monopole and Exotics Detector at the LHC (MoEDAL) experiment is an experiment dedicated to searching for beyond standard model (BSM) particles like magnetic monopoles, highly ionizing particles and slow-moving supersymmetric particles. In many ways, this detector complements the BSM searches of ATLAS and CMS. In this document, a brief description of the MoEDAL detector and performance is given. \u0000 The Large Hadron Collider Forward (LHCf) experiment, on the other hand, is dedicated to measuring the neutral particles produced in the hadronic collision in the very forward region. This document also briefly discusses the LHCf detector and its performance.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116913994","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 a W’ decaying to $t bar b$ in the lepton plus jets final state with the ATLAS detector using 36.1 fb$^{−1}$ of $pp$ collision data at $sqrt(s)=13$ TeV 利用36.1 fb$^{−1}$的$pp$碰撞数据，在$sqrt(s)=13$ TeV下，用ATLAS探测器搜索轻子加喷流最终态中衰减到$t bar b$的W '
Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-08-30 DOI: 10.22323/1.321.0015
M. Marjanović
{"title":"Search for a W’ decaying to $t bar b$ in the lepton plus jets final state with the ATLAS detector using 36.1 fb$^{−1}$ of $pp$ collision data at $sqrt(s)=13$ TeV","authors":"M. Marjanović","doi":"10.22323/1.321.0015","DOIUrl":"https://doi.org/10.22323/1.321.0015","url":null,"abstract":"A search for new charged massive gauge bosons, called W’, decaying to tb, is performed with the ATLAS detector in the decay channel leading to final states with an electron or muon, 2 or 3 jets, and missing transverse momentum. This search uses a dataset corresponding to an integrated luminosity of 36.1 fb-1 of pp collisions produced at the LHC and collected during 2015 and 2016. The data is found to be consistent with the Standard Model expectation. Therefore limits are set on the W ′ → tb cross section times branching ratio and on the W ′ boson effective couplings as a function of the W ′ boson mass.","PeriodicalId":346295,"journal":{"name":"Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122008574","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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