Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses

The χb1ð3PÞ and χb2ð3PÞ states are observed through their ϒð3SÞγ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb−1. The ϒð3S...

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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:	American Physical Society 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/3/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_article_new.pdf http://irep.iium.edu.my/70418/4/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_scopus.pdf

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spelling	iium-704182019-07-15T01:34:05Z http://irep.iium.edu.my/70418/ Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics The χb1ð3PÞ and χb2ð3PÞ states are observed through their ϒð3SÞγ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb−1. The ϒð3SÞ mesons are identified through their dimuon decay channel, while the low-energy photons are detected after converting to eþe− pairs in the silicon tracker, leading to a χbð3PÞ mass resolution of 2.2 MeV. This is the first time that the J ¼ 1 and 2 states are well resolved and their masses individually measured: 10513.42 0.41ðstatÞ 0.18ðsystÞ MeV and 10524.02 0.57ðstatÞ 0.18ðsystÞ MeV; they are determined with respect to the world-average value of the ϒð3SÞ mass, which has an uncertainty of 0.5 MeV. The mass splitting is measured to be 10.60 0.64ðstatÞ 0.17ðsystÞ MeV. American Physical Society 2018-08-29 Article PeerReviewed application/pdf en http://irep.iium.edu.my/70418/3/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_article_new.pdf application/pdf en http://irep.iium.edu.my/70418/4/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses. Physical Review Letters, 121 (9). pp. 1-17. ISSN 0031-9007 E-ISSN 1079-7114 https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.121.092002 10.1103/PhysRevLett.121.092002
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 Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
description	The χb1ð3PÞ and χb2ð3PÞ states are observed through their ϒð3SÞγ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb−1. The ϒð3SÞ mesons are identified through their dimuon decay channel, while the low-energy photons are detected after converting to eþe− pairs in the silicon tracker, leading to a χbð3PÞ mass resolution of 2.2 MeV. This is the first time that the J ¼ 1 and 2 states are well resolved and their masses individually measured: 10513.42 0.41ðstatÞ 0.18ðsystÞ MeV and 10524.02 0.57ðstatÞ 0.18ðsystÞ MeV; they are determined with respect to the world-average value of the ϒð3SÞ mass, which has an uncertainty of 0.5 MeV. The mass splitting is measured to be 10.60 0.64ðstatÞ 0.17ðsystÞ MeV.
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	Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
title_short	Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
title_full	Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
title_fullStr	Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
title_full_unstemmed	Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
title_sort	observation of the χb1 (3p) and χb2 (3p) and measurement of their masses
publisher	American Physical Society
publishDate	2018
url	http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/ http://irep.iium.edu.my/70418/3/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_article_new.pdf http://irep.iium.edu.my/70418/4/70418_Observation%20of%20the%20%CF%87%20b1%C3%B03P%C3%9E%20and%20%CF%87%20b2%C3%B03P%C3%9E%20and%20Measurement%20_scopus.pdf
first_indexed	2023-09-18T21:39:58Z
last_indexed	2023-09-18T21:39:58Z
_version_	1777413074323505152

Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses

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