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http://hdl.handle.net/2445/185314| Title: | Precision measurement of the Bc+ meson mass |
| Author: | LHCb Collaboration Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, Elisabet Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Marin Benito, Carla Vázquez Gómez, Ricard Vilasis-Cardona, Xavier |
| Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| Issue Date: | 20-Jul-2020 |
| Publisher: | Springer Verlag |
| Abstract: | A precision measurement of the B+c meson mass is performed using proton- proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb−1. The B+c mesons are reconstructed via the decays B+c → J/ψπ+, B+c → J/ψπ+π−π+, B+c→J/ψpp¯¯¯π+, B+c→J/ψD+s, B+c → J/ψ D0K+ and B+c→B0sπ+. Combining the results of the individual decay channels, the B+c mass is measured to be 6274.47 ± 0.27 (stat) ± 0.17 (syst) MeV/c2. This is the most precise measurement of the B+c mass to date. The difference between the B+c and B0s meson masses is measured to be 907.75 ± 0.37 (stat) ± 0.27 (syst) MeV/c. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP07(2020)123 |
| It is part of: | Journal of High Energy Physics, 2020, num. 123 |
| URI: | http://hdl.handle.net/2445/185314 |
| Related resource: | https://doi.org/10.1007/JHEP07(2020)123 |
| ISSN: | 1126-6708 |
| Appears in Collections: | Publicacions de projectes de recerca finançats per la UE Articles publicats en revistes (Física Quàntica i Astrofísica) |
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