Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV

A search for resonances in the mass range 12–70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass energies of 8 and 13 TeV, collected with the CMS detector at the...

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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:	Springer Nature 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/1/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_article.pdf http://irep.iium.edu.my/69745/2/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_scopus.pdf http://irep.iium.edu.my/69745/13/69745%20earch%20for%20resonances%20in%20the%20mass%20spectrum%20of%20muon%20pairs%20WOS.pdf

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spelling	iium-697452019-07-15T01:48:59Z http://irep.iium.edu.my/69745/ Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 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 for resonances in the mass range 12–70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass energies of 8 and 13 TeV, collected with the CMS detector at the LHC and corresponding to integrated luminosities of 19.7 and 35.9 fb−1 , respectively. The search is carried out in two mutually exclusive event categories. Events in the first category are required to have a b quark jet in the central region ( � �η � � ≤ 2.4) and at least one jet in the forward region ( � �η � � > 2.4). Events in the second category are required to have two jets in the central region, at least one of which is identified as a b quark jet, no jets in the forward region, and low missing transverse momentum. An excess of events above the background near a dimuon mass of 28 GeV is observed in the 8 TeV data, corresponding to local significances of 4.2 and 2.9 standard deviations for the first and second event categories, respectively. A similar analysis conducted with the 13 TeV data results in a mild excess over the background in the first event category corresponding to a local significance of 2.0 standard deviations, while the second category results in a 1.4 standard deviation deficit. The fiducial cross section measurements and 95% confidence level upper limits on those for a resonance consistent with the 8 TeV excess are provided at both collision energies Springer Nature 2018-11-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/69745/1/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_article.pdf application/pdf en http://irep.iium.edu.my/69745/2/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_scopus.pdf application/pdf en http://irep.iium.edu.my/69745/13/69745%20earch%20for%20resonances%20in%20the%20mass%20spectrum%20of%20muon%20pairs%20WOS.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 resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV. Journal of High Energy Physics, 2018 (11). pp. 1-36. ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP11%282018%29161.pdf 10.1007/JHEP11(2018)161
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 Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
description	A search for resonances in the mass range 12–70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass energies of 8 and 13 TeV, collected with the CMS detector at the LHC and corresponding to integrated luminosities of 19.7 and 35.9 fb−1 , respectively. The search is carried out in two mutually exclusive event categories. Events in the first category are required to have a b quark jet in the central region ( � �η � � ≤ 2.4) and at least one jet in the forward region ( � �η � � > 2.4). Events in the second category are required to have two jets in the central region, at least one of which is identified as a b quark jet, no jets in the forward region, and low missing transverse momentum. An excess of events above the background near a dimuon mass of 28 GeV is observed in the 8 TeV data, corresponding to local significances of 4.2 and 2.9 standard deviations for the first and second event categories, respectively. A similar analysis conducted with the 13 TeV data results in a mild excess over the background in the first event category corresponding to a local significance of 2.0 standard deviations, while the second category results in a 1.4 standard deviation deficit. The fiducial cross section measurements and 95% confidence level upper limits on those for a resonance consistent with the 8 TeV excess are provided at both collision energies
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 resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
title_short	Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
title_full	Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
title_fullStr	Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
title_full_unstemmed	Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV
title_sort	search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 tev
publisher	Springer Nature
publishDate	2018
url	http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/ http://irep.iium.edu.my/69745/1/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_article.pdf http://irep.iium.edu.my/69745/2/69745_Search%20for%20resonances%20in%20the%20mass%20spectrum_scopus.pdf http://irep.iium.edu.my/69745/13/69745%20earch%20for%20resonances%20in%20the%20mass%20spectrum%20of%20muon%20pairs%20WOS.pdf
first_indexed	2023-09-18T21:39:00Z
last_indexed	2023-09-18T21:39:00Z
_version_	1777413013380268032

Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at √s=8 and 13 TeV

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