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Title
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Search for a new bottomonium state decaying to in pp collisions at = 8 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2013
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2013.10.016
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Volume/pages
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727
:1-3
(2013)
, p. 57-76
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ISI
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000328518400009
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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