A search for the rare decay of a B0 or Bs0 meson into the final state J/ψγ is performed, using data collected by the LHCb experiment in pp collisions at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The observed number of signal candidates is consistent with a background-only hypothesis. Branching fraction values larger than 1.5×10-6 for the B0→J/ψγ decay mode are excluded at 90% confidence level. For the Bs0→J/ψγ decay mode, branching fraction values larger than 7.3×10-6 are excluded at 90% confidence level; this is the first branching fraction limit for this decay.

Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2015). Search for the rare decays B0 →j /ψγ and Bs0 →j /ψγ. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 92(11) [10.1103/PhysRevD.92.112002].

Search for the rare decays B0 →j /ψγ and Bs0 →j /ψγ

Belloli, N;Borsato, M;Calvi, M;Carniti, P;Cassina, L;Gotti, C;Grillo, L;Khanji, B;Martinelli, M;Petruzzo, M;
2015

Abstract

A search for the rare decay of a B0 or Bs0 meson into the final state J/ψγ is performed, using data collected by the LHCb experiment in pp collisions at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The observed number of signal candidates is consistent with a background-only hypothesis. Branching fraction values larger than 1.5×10-6 for the B0→J/ψγ decay mode are excluded at 90% confidence level. For the Bs0→J/ψγ decay mode, branching fraction values larger than 7.3×10-6 are excluded at 90% confidence level; this is the first branching fraction limit for this decay.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics; Physics and Astronomy (miscellaneous)
English
2015
92
11
112002
none
Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2015). Search for the rare decays B0 →j /ψγ and Bs0 →j /ψγ. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 92(11) [10.1103/PhysRevD.92.112002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187875
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