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Observation of Bs0->J/ψf'2(1525) in J/ψK+K- final states

  • Back, J. J.
  • Dossett, D.
  • Gershon, T. J.
  • Harrison, P. F.
  • Kreps, Michal
  • Latham, Thomas
  • Pilar, T.
  • Poluektov, Anton
  • Reid, Matthew M.
  • Silva Coutinho, R.
  • Whitehead, M. (Mark)
  • Williams, M. P.
  • HASH(0x55786ee46878)
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Publication date
January 2012
Icon DOI
10.1103/PhysRevLett.108.151801
Publisher
American Physical Society (APS)
ISSN
0031-9007
Language
English

Abstract

The decay Bs0→J/ψK+K- is investigated using 0.16  fb-1 of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at higher K+K- masses have not previously been studied. In the K+K- mass spectrum we observe a significant signal in the f2′(1525) region as well as a nonresonant component. After subtracting the nonresonant component, we find B(Bs0→J/ψf2′(1525))/B(Bs0→J/ψϕ)=(26.4±2.7±2.4)%

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