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Title: Measurement of the ratio $$\mathcal{B}( \mathrm{B}^0_{s} \to \mathrm{J}/\psi\, \mathrm{f}_0(980))/\mathcal{B}(\mathrm{B}^0_{s} \to \mathrm{J}/\psi\, \phi(1020))$$ in pp collisions at $$\sqrt{s}$$ = 7 TeV

The ratio Rf0/φ of the branching fractions of the B0 s meson to the CP-odd eigenstate J/ψ f0(980) and to J/ψ φ(1020) is measured, where J/ψ → µ +µ -, f0 → π +π -, and φ → K+K-. 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, corresponding to an integrated luminosity of 5.3 fb-1 . The result is Rf0/φ = 0.140 ± 0.013 ± 0.018, where the first uncertainty is statistical and the second is systematic. This result is consistent with theoretical predictions and previous measurements of Rf0/φ. It is the most precise measurement of the ratio to date.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
Publication Date:
Report Number(s):
FERMILAB-PUB-15-025-CMS
Journal ID: ISSN 0370-2693; arXiv eprint number arXiv:1501.06089
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 756; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1240030
Alternate Identifier(s):
OSTI ID: 1221238