Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV

The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum imbalance, using the MT2 variable. The analysis uses proton-proton collision da...

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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 English
Published:	American Physical Society 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/1/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_article.pdf http://irep.iium.edu.my/69798/2/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_scopus.pdf http://irep.iium.edu.my/69798/13/69798_Constraints%20on%20models%20of%20scalar%20and%20vector%20leptoquarks%20decaying%20to%20a%20quark%20and%20a%20neutrino%20at%20s%20%3D13%20TeV_WOS.pdf

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spelling	iium-697982019-07-15T01:45:09Z http://irep.iium.edu.my/69798/ Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino 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 The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum imbalance, using the MT2 variable. The analysis uses proton-proton collision data at ffiffi s p ¼ 13 TeV, recorded with the CMS detector at the LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb−1. Leptoquark pair production is considered with LQ decays to a neutrino and a top, bottom, or light quark. This reinterpretation considers higher mass values than the original CMS search to constrain both scalar and vector LQs. Limits on the cross section for LQ pair production are derived at the 95% confidence level depending on the LQ decay mode. A vector LQ decaying with a 50% branching fraction to tν, and 50% to bτ, has been proposed as part of an explanation of anomalous flavor physics results. In such a model, using only the decays to tν, LQ masses below 1530 GeV are excluded assuming the Yang-Mills case with coupling κ ¼ 1, or 1115 GeV in the minimal coupling case κ ¼ 0, placing the most stringent constraint to date from pair production of vector LQs. American Physical Society 2018-08-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/69798/1/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_article.pdf application/pdf en http://irep.iium.edu.my/69798/2/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_scopus.pdf application/pdf en http://irep.iium.edu.my/69798/13/69798_Constraints%20on%20models%20of%20scalar%20and%20vector%20leptoquarks%20decaying%20to%20a%20quark%20and%20a%20neutrino%20at%20s%20%3D13%20TeV_WOS.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV. Physical Review D, 98 (3). 032005-1. ISSN 2470-0010 E-ISSN 2470-0029 https://journals.aps.org/prd/pdf/10.1103/PhysRevD.98.032005 10.1103/PhysRevD.98.032005
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English 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 Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
description	The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum imbalance, using the MT2 variable. The analysis uses proton-proton collision data at ffiffi s p ¼ 13 TeV, recorded with the CMS detector at the LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb−1. Leptoquark pair production is considered with LQ decays to a neutrino and a top, bottom, or light quark. This reinterpretation considers higher mass values than the original CMS search to constrain both scalar and vector LQs. Limits on the cross section for LQ pair production are derived at the 95% confidence level depending on the LQ decay mode. A vector LQ decaying with a 50% branching fraction to tν, and 50% to bτ, has been proposed as part of an explanation of anomalous flavor physics results. In such a model, using only the decays to tν, LQ masses below 1530 GeV are excluded assuming the Yang-Mills case with coupling κ ¼ 1, or 1115 GeV in the minimal coupling case κ ¼ 0, placing the most stringent constraint to date from pair production of vector LQs.
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	Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
title_short	Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
title_full	Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
title_fullStr	Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
title_full_unstemmed	Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV
title_sort	constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 tev
publisher	American Physical Society
publishDate	2018
url	http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/ http://irep.iium.edu.my/69798/1/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_article.pdf http://irep.iium.edu.my/69798/2/69798_Constraints%20on%20models%20of%20scalar%20and%20vector_scopus.pdf http://irep.iium.edu.my/69798/13/69798_Constraints%20on%20models%20of%20scalar%20and%20vector%20leptoquarks%20decaying%20to%20a%20quark%20and%20a%20neutrino%20at%20s%20%3D13%20TeV_WOS.pdf
first_indexed	2023-09-18T21:39:05Z
last_indexed	2023-09-18T21:39:05Z
_version_	1777413018942963712

Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at s =13 TeV

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