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Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV
CMS Collaboration
2013
发表期刊PHYSICS LETTERS B
卷号727期号:1--3页码:57-76
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要The results of a search for the bottomonium counterpart, denoted as X-b, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at,root s = 8 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 20.7 fb(-1). The search looks for the exclusive decay channel X-b -> Upsilon(1S)pi(+)pi(-) followed by Upsilon(1S) -> mu(+)mu(-). No evidence for an X-b signal is observed. Upper limits are set at the 95% confidence level on the ratio of the inclusive production cross sections times the branching fractions to Upsilon(1S)pi(+)pi(-) of the X-b and the Upsilon(2S). The upper limits on the ratio are in the range 0.9-5.4% for X-b masses between 10 and 11 GeV. These are the first upper limits on the production of a possible X-b at a hadron collider. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
关键词TETRAQUARKS MODEL
学科领域Physics
DOI10.1016/j.physletb.2013.10.016
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000328518400009
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213636
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV[J]. PHYSICS LETTERS B,2013,727(1--3):57-76.
APA CMS Collaboration.(2013).Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV.PHYSICS LETTERS B,727(1--3),57-76.
MLA CMS Collaboration."Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV".PHYSICS LETTERS B 727.1--3(2013):57-76.
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