Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV

A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with missing hits in the outer layers of the silicon tracker, little or no energy in associated calorimeter deposi...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Verlag 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/1/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_article.pdf http://irep.iium.edu.my/70349/2/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_scopus.pdf

id	iium-70349
recordtype	eprints
spelling	iium-703492019-01-30T04:01:41Z http://irep.iium.edu.my/70349/ Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with missing hits in the outer layers of the silicon tracker, little or no energy in associated calorimeter deposits, and no associated hits in the muon detectors. This search uses data collected with the CMS detector in 2015 and 2016 from protonproton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 38.4 fb−1 . The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking model. The data are consistent with the background-only hypothesis. Limits are set on the product of the cross section for direct production of charginos and their branching fraction to a neutralino and a pion, as a function of the chargino mass and lifetime. At 95% confidence level, charginos with masses below 715 (695) GeV are excluded for a lifetime of 3 (7) ns, as are charginos with lifetimes from 0.5 to 60 ns for a mass of 505 GeV. These are the most stringent limits using a disappearing track signature on this signal model for chargino lifetimes above ≈0.7 ns. Springer Verlag 2018-08-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/70349/1/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_article.pdf application/pdf en http://irep.iium.edu.my/70349/2/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2018 (8). pp. 1-39. ISSN 1126-6708 E-ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP08%282018%29016.pdf 10.1007/JHEP08(2018)016
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	Q Science (General) QC Physics
spellingShingle	Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
description	A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with missing hits in the outer layers of the silicon tracker, little or no energy in associated calorimeter deposits, and no associated hits in the muon detectors. This search uses data collected with the CMS detector in 2015 and 2016 from protonproton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 38.4 fb−1 . The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking model. The data are consistent with the background-only hypothesis. Limits are set on the product of the cross section for direct production of charginos and their branching fraction to a neutralino and a pion, as a function of the chargino mass and lifetime. At 95% confidence level, charginos with masses below 715 (695) GeV are excluded for a lifetime of 3 (7) ns, as are charginos with lifetimes from 0.5 to 60 ns for a mass of 505 GeV. These are the most stringent limits using a disappearing track signature on this signal model for chargino lifetimes above ≈0.7 ns.
format	Article
author	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli
author_facet	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli
author_sort	Sirunyan, A. M.
title	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
title_short	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
title_full	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
title_fullStr	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
title_full_unstemmed	Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV
title_sort	search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 tev
publisher	Springer Verlag
publishDate	2018
url	http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/ http://irep.iium.edu.my/70349/1/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_article.pdf http://irep.iium.edu.my/70349/2/70349_Search%20for%20disappearing%20tracks%20as%20a%20signature_scopus.pdf
first_indexed	2023-09-18T21:39:53Z
last_indexed	2023-09-18T21:39:53Z
_version_	1777413069179191296

Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at √s=13 TeV

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