Measurement of the Bc meson mass in the exclusive decay Bc --> Jpsi Pi
D0 Collaboration, V. Abazov, et al
TL;DR
This paper reports the first precise measurement of the Bc meson mass using its decay to J/psi Pi, based on data from the D0 detector at Fermilab, with a significance over five standard deviations.
Contribution
The study provides a new, highly significant measurement of the Bc meson mass using exclusive decay reconstruction at the Tevatron.
Findings
Measured Bc mass: 6300 ± 14 (stat) ± 5 (sys) MeV/c^2
Signal significance exceeds five standard deviations
First precise mass measurement of Bc in this decay channel
Abstract
A fully reconstructed Bc --> Jpsi Pi signal is observed with the D0 detector at the Fermilab Tevatron p-pbar collider. Using 1.3 inverse femtobarns of integrated luminosity, the signal is extracted with a significance more than five standard deviations above background. The measured Bc meson mass is 6300 (+-) 14 (stat) (+-) 5 (sys) MeV/cc
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