Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV

Pair production of Υ(1S) mesons is observed at the LHC in proton-proton collisions at √ s = 8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb−1 . Both Υ(1S) candidates are fully reconstructed via their decays to µ +µ −. The fiducial acceptance r...

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Main Authors:	CMS, The CMS collaboration, Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Verlag 2017
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/1/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_article.pdf http://irep.iium.edu.my/63046/2/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_scopus.pdf

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recordtype	eprints
spelling	iium-630462018-06-21T01:49:37Z http://irep.iium.edu.my/63046/ Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV CMS, The CMS collaboration Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Md. Ali, Mohd. Adli Q Science (General) QC Physics Pair production of Υ(1S) mesons is observed at the LHC in proton-proton collisions at √ s = 8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb−1 . Both Υ(1S) candidates are fully reconstructed via their decays to µ +µ −. The fiducial acceptance region is defined by an absolute Υ(1S) rapidity smaller than 2.0. The fiducial cross section for the production of Υ(1S) pairs, assuming that both mesons decay isotropically, is measured to be 68.8±12.7 (stat)±7.4 (syst)±2.8 (B) pb, where the third uncertainty comes from the uncertainty in the branching fraction of Υ(1S) decays to µ +µ −. Assuming instead that the Υ(1S) mesons are produced with different polarizations leads to variations in the measured cross section in the range from −38% to +36%. Springer Verlag 2017-05-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63046/1/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_article.pdf application/pdf en http://irep.iium.edu.my/63046/2/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_scopus.pdf CMS, The CMS collaboration and Khachatryan, Vardan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Md. Ali, Mohd. Adli (2017) Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV. Journal of High Energy Physics, 2017 (5). pp. 1-33. E-ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP05%282017%29013.pdf 10.1007/JHEP05(2017)013
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 CMS, The CMS collaboration Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Md. Ali, Mohd. Adli Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
description	Pair production of Υ(1S) mesons is observed at the LHC in proton-proton collisions at √ s = 8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb−1 . Both Υ(1S) candidates are fully reconstructed via their decays to µ +µ −. The fiducial acceptance region is defined by an absolute Υ(1S) rapidity smaller than 2.0. The fiducial cross section for the production of Υ(1S) pairs, assuming that both mesons decay isotropically, is measured to be 68.8±12.7 (stat)±7.4 (syst)±2.8 (B) pb, where the third uncertainty comes from the uncertainty in the branching fraction of Υ(1S) decays to µ +µ −. Assuming instead that the Υ(1S) mesons are produced with different polarizations leads to variations in the measured cross section in the range from −38% to +36%.
format	Article
author	CMS, The CMS collaboration Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Md. Ali, Mohd. Adli
author_facet	CMS, The CMS collaboration Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Md. Ali, Mohd. Adli
author_sort	CMS, The CMS collaboration
title	Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
title_short	Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
title_full	Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
title_fullStr	Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
title_full_unstemmed	Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV
title_sort	observation of y(1s) pair production in proton-proton collisions at √s=8 tev
publisher	Springer Verlag
publishDate	2017
url	http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/ http://irep.iium.edu.my/63046/1/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_article.pdf http://irep.iium.edu.my/63046/2/63046_Observation%20of%20Y%281S%29%20pair%20production%20in%20proton-proton_scopus.pdf
first_indexed	2023-09-18T21:29:23Z
last_indexed	2023-09-18T21:29:23Z
_version_	1777412408856281088

Observation of Y(1S) pair production in proton-proton collisions at √s=8 TeV

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