Measurement of the ratio B(B[0,s] to J/psi f0(980)) / B(B[0,s] to J/psi phi(1020)) in pp collisions at sqrt(s) = 7 TeV
Abstract
A measurement of the ratio of the branching fractions of the B[0,s] meson to J/psi f0(980) and to J/psi phi(1020) is presented. The J/psi, f0(980), and phi(1020) are observed through their decays to mu+ mu, pi+ pi, and K+ K, respectively. The f0 is identified by requiring abs( M[pi+,pi]  974 MeV ) < 50 MeV. The analysis is based on a data sample of pp collisions at a centreofmass energy of 7 TeV, collected by the CMS experiment, corresponding to an integrated luminosity of 5.3 inverse femtobarns. The measured ratio is B(B[0,s] to J/psi f0(980)) B(f0 to pi+ pi) / B(B[0,s] to J/psi phi(1020)) B(phi(1020) to K+ K) = 0.140 +/ 0.008 +/ 0.023, where the first uncertainty is statistical and the second is systematic.
 Publication:

arXiv eprints
 Pub Date:
 January 2015
 arXiv:
 arXiv:1501.06089
 Bibcode:
 2015arXiv150106089C
 Keywords:

 High Energy Physics  Experiment
 EPrint:
 Replaced with published version. Added journal reference and DOI