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Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- -> J/psi phi K-+/- decays

Abstract:

A peaking structure in the J/ψφ mass spectrum near threshold is observed in B ±→J/ψφK± decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/ψ, corresponds to an integrated luminosity of 5.2 fb-1. Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard dev...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1016/j.physletb.2014.05.055

Authors


Chatrchyan, S More by this author
Khachatryan, V More by this author
Sirunyan, AM More by this author
Tumasyan, A More by this author
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Publisher:
Elsevier Publisher's website
Journal:
Physics Letters B Journal website
Volume:
734
Pages:
261-281
Publication date:
2014-06-05
DOI:
ISSN:
0370-2693
URN:
uuid:a2e5bdfe-c690-4608-b83c-232ef1a9bb61
Source identifiers:
471722
Local pid:
pubs:471722

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