2026-04-17T16:09:08Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.14342/32762025-03-11T04:11:15Zcom_2072_482405com_2072_183628col_2072_482415
RECERCAT
author
Calvo Gómez, Míriam
author
Camboni, Alessandro
author
Vilasís Cardona, Xavier
author
LHCb Collaboration - CERN
2025-03-11T04:11:15Z
2025-03-11T04:11:15Z
2012-12-05
http://hdl.handle.net/20.500.14342/3276
https://doi.org/10.1103/PhysRevLett.109.232001
Measurements of B+c production and mass are performed with the decay mode B+c→J/ψπ+ using 0.37 fb−1 of data collected in pp collisions at √s=7 TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B+c→J/ψπ+ and the B+→J/ψK+ decays is measured to be (0.68±0.10(stat)±0.03(syst)±0.05(lifetime))% for B+c and B+ mesons with transverse momenta pT>4 GeV/c and pseudorapidities 2.5<η<4.5. The B+c mass is directly measured to be 6273.7±1.3(stat)±1.6(syst) MeV/c2, and the measured mass difference with respect to the B+ meson is M(B+c)−M(B+)=994.6±1.3(stat)±0.6(syst) MeV/c2.
eng
Attribution 4.0 International © CERN
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Col·lisions (Física nuclear)
Measurements of Bþ c Production and Mass with the Bþ c ! J=c þ Decay
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion