Precision measurement of the Bc+ meson mass
Name
Aaij2020_Article_PrecisionMeasurementOfTheBcBCM.pdf
Description
Published version
Size
676.24 KB
Format
Adobe PDF
Checksum (MD5)
a0e8f7f4dc5a62ac261c3b6667bdf07d
Author(s)
Williams, Michael
Date Issued
2020
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Williams, Michael. 2020. "Precision measurement of the Bc+ meson mass." Journal of High Energy Physics, 2020 (7).
Version
Final published version
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/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 → B0
s 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 B0
s meson masses is measured to be 907.75 ± 0.37 (stat) ± 0.27 (syst) MeV/c2.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP07(2020)123
