Measurement of the Ratio B ( B[subscript s][superscript 0] → J/ψf[subscript 0] (980))/B(B[subscript s][superscript 0] → J/ψϕ(1020)) in Pp Collisions at √s = 7 TeV
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Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Bierwagen, Katharina
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Gulhan, Doga Can
Klute, Markus
Date Issued
February 2016
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Khachatryan, V., et al. “Measurement of the Ratio B(B[subscript s][superscript 0] → J/ψf[subscript 0](980))/B(B[subscript s][superscript 0] → J/ψϕ(1020)) in Pp Collisions at √s = 7 TeV.” Physics Letters B, vol. 756, May 2016, pp. 84–102. © 2016 CERN for the benefit of the CMS Collaboration
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Final published version
Abstract
A measurement of the ratio of the branching fractions of the B[subscript s][superscript 0] meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f[subscript 0](980), and φ(1020) are observed through their decays to μ[superscript +]μ[superscript -], π[superscript +]π[superscript -], and K[superscript +]K[superscript -], respectively. The f[subscript 0] and the φ are identified by requiring |M[subscript π[superscript +]π[subscript -]]-974 MeV|<50 MeV and |M[subscript K[superscript +]K[superscript -]]-1020 MeV|<10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 fb[superscript -1]. The measured ratio is B(B[subscript s][superscript 0]→J/ψf[subscript 0])B(f[subscript 0]→π[superscript +]π[superscript -])/B(B[subscript s][superscript 0]→J/ψφ)B(φ→K[superscript +]K[superscript -]) = 0.140±0.008(stat) ± 0.023(syst), where the first uncertainty is statistical and the second is systematic.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
http://dx.doi.org/10.1016/J.PHYSLETB.2016.02.047
