Precision measurement of the B-c(+) meson mass
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Published version
Author(s)
Type
Journal Article
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.
Date Issued
2020-07-20
Date Acceptance
2020-06-16
ISSN
1029-8479
Publisher
IOP Publishing
Start Page
1
End Page
21
Journal / Book Title
The Journal of High Energy Physics
Volume
2020
Issue
7
Copyright Statement
This article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Attribution License (CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Identifier
https://link.springer.com/article/10.1007%2FJHEP07%282020%29123
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000553446200002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
B physics
Hadron-Hadron scattering (experiments)
QCD
Spectroscopy
B-C SPECTROSCOPY
DECAYS
SEARCH
CHARM
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
B physics
Hadron-Hadron scattering (experiments)
QCD
Spectroscopy
B-C SPECTROSCOPY
DECAYS
SEARCH
CHARM
hep-ex
hep-ex
0105 Mathematical Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0206 Quantum Physics
Nuclear & Particles Physics
Publication Status
Published
OA Location
https://link.springer.com/content/pdf/10.1007/JHEP07(2020)123.pdf
Article Number
ARTN 123
Date Publish Online
2020-07-20