Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV

Results are presented from a search for the electroweak production of supersymmetric particles in pp collisions in final states with two τ leptons. The data sample corresponds to an integrated luminosity between 18.1 fb−1 and 19.6 fb−1 depending on the final state of τ lepton decays, at √ s = 8...

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Main Authors: Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Md. Ali, Mohd. Adli
Format: Article
Language:English
English
Published: Springer Nature 2017
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Online Access:http://irep.iium.edu.my/63072/1/63072_Search%20for%20electroweak%20production%20of%20charginos_article.pdf
http://irep.iium.edu.my/63072/2/63072_Search%20for%20electroweak%20production%20of%20charginos_scopus.pdf
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https://link.springer.com/article/10.1007%2FJHEP04%282017%29018
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spelling my.iium.irep.630722018-11-09T03:59:24Z http://irep.iium.edu.my/63072/ Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics Results are presented from a search for the electroweak production of supersymmetric particles in pp collisions in final states with two τ leptons. The data sample corresponds to an integrated luminosity between 18.1 fb−1 and 19.6 fb−1 depending on the final state of τ lepton decays, at √ s = 8 TeV, collected by the CMS experiment at the LHC. The observed event yields in the signal regions are consistent with the expected standard model backgrounds. The results are interpreted using simplified models describing the pair production and decays of charginos or τ sleptons. For models describing the pair production of the lightest chargino, exclusion regions are obtained in the plane of chargino mass vs. neutralino mass under the following assumptions: the chargino decays into third-generation sleptons, which are taken to be the lightest sleptons, and the sleptons masses lie midway between those of the chargino and the neutralino. Chargino masses below 420 GeV are excluded at a 95% confidence level in the limit of a massless neutralino, and for neutralino masses up to 100 GeV, chargino masses up to 325 GeV are excluded at 95% confidence level. Constraints are also placed on the cross section for pair production of τ sleptons as a function of mass, assuming a massless neutralino. Springer Nature 2017-04-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63072/1/63072_Search%20for%20electroweak%20production%20of%20charginos_article.pdf application/pdf en http://irep.iium.edu.my/63072/2/63072_Search%20for%20electroweak%20production%20of%20charginos_scopus.pdf Khachatryan, Vardan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Md. Ali, Mohd. Adli (2017) Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV. Journal of High Energy Physics, 2017 (4). pp. 1-48. ISSN 1029-8479 https://link.springer.com/article/10.1007%2FJHEP04%282017%29018 10.1007/JHEP04(2017)018
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Asilar, Ece
Md. Ali, Mohd. Adli
Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
description Results are presented from a search for the electroweak production of supersymmetric particles in pp collisions in final states with two τ leptons. The data sample corresponds to an integrated luminosity between 18.1 fb−1 and 19.6 fb−1 depending on the final state of τ lepton decays, at √ s = 8 TeV, collected by the CMS experiment at the LHC. The observed event yields in the signal regions are consistent with the expected standard model backgrounds. The results are interpreted using simplified models describing the pair production and decays of charginos or τ sleptons. For models describing the pair production of the lightest chargino, exclusion regions are obtained in the plane of chargino mass vs. neutralino mass under the following assumptions: the chargino decays into third-generation sleptons, which are taken to be the lightest sleptons, and the sleptons masses lie midway between those of the chargino and the neutralino. Chargino masses below 420 GeV are excluded at a 95% confidence level in the limit of a massless neutralino, and for neutralino masses up to 100 GeV, chargino masses up to 325 GeV are excluded at 95% confidence level. Constraints are also placed on the cross section for pair production of τ sleptons as a function of mass, assuming a massless neutralino.
format Article
author Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Asilar, Ece
Md. Ali, Mohd. Adli
author_facet Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Asilar, Ece
Md. Ali, Mohd. Adli
author_sort Khachatryan, Vardan
title Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
title_short Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
title_full Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
title_fullStr Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
title_full_unstemmed Search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 TeV
title_sort search for electroweak production of charginos in final states with two τ leptons in pp collisions at √s=8 tev
publisher Springer Nature
publishDate 2017
url http://irep.iium.edu.my/63072/1/63072_Search%20for%20electroweak%20production%20of%20charginos_article.pdf
http://irep.iium.edu.my/63072/2/63072_Search%20for%20electroweak%20production%20of%20charginos_scopus.pdf
http://irep.iium.edu.my/63072/
https://link.springer.com/article/10.1007%2FJHEP04%282017%29018
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