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Title: | Search for the Rare Decays B-s(0) -> e(+) e(-) and B-0 -> e(+) e(-) |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Golobardes, Elisabet Manera Escalero, R. Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Gran Col·lisionador d'Hadrons Protons Large Hadron Collider (France and Switzerland) Protons |
Issue Date: | 27-May-2020 |
Publisher: | American Physical Society |
Abstract: | A search for the decays B0s→e+e− and B0→e+e− is performed using data collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to integrated luminosities of 1, 2, and 2 fb−1, respectively. No signal is observed. Assuming no contribution from B0→e+e− decays, an upper limit on the branching fraction B(B0s→e+e−)<9.4(11.2)×10−9 is obtained at 90(95)% confidence level. If no B0s→e+e− contribution is assumed, a limit of B(B0→e+e−)<2.5(3.0)×10−9 is determined at 90(95)% confidence level. These upper limits are more than one order of magnitude lower than the previous values. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.211802 |
It is part of: | Physical Review Letters, 2020, vol. 124, num. 21, p. 211802 |
URI: | http://hdl.handle.net/2445/175172 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.211802 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
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