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Abstract / Description of output
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/ψ π+, B+
c → J/ψ π+π−π+, B+c → J/ψ p¯pπ+, B+c → J/ψ D+s , B+c → J/ψ D0K+ and B+
c → B0s π+. 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/c2.
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/ψ π+, B+
c → J/ψ π+π−π+, B+c → J/ψ p¯pπ+, B+c → J/ψ D+s , B+c → J/ψ D0K+ and B+
c → B0s π+. 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/c2.
| Original language | English |
|---|---|
| Article number | 123 |
| Pages (from-to) | 1-20 |
| Number of pages | 20 |
| Journal | Journal of High Energy Physics |
| Volume | 2020 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 20 Jul 2020 |
Keywords / Materials (for Non-textual outputs)
- B physics
- Hadron-Hadron scattering (experiments)
- QCD
- Spectroscopy
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Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
1/07/22 → 30/06/26
Project: Research