Skip to Main content Skip to Navigation
Journal articles

Measurement of the lifetime of the B+c meson using the B+c→J/ψπ+ decay mode

Abstract : The difference in total widths between the B+c and B+ mesons is measured using 3.0fb−1 of data collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton-proton collisions at the LHC. Through the study of the time evolution of B+c→J/ψπ+ and B+→J/ψK+ decays, the width difference is measured to beΔΓ≡ΓB+c−ΓB+=4.46±0.14±0.07mm−1c,where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the B+c lifetime,τB+c=513.4±11.0±5.7fs,where the first uncertainty is statistical and the second systematic.
Document type :
Journal articles
Complete list of metadatas

Cited literature [17 references]  Display  Hide  Download

http://hal.in2p3.fr/in2p3-01088069
Contributor : Sabine Starita <>
Submitted on : Thursday, February 26, 2015 - 3:17:05 PM
Last modification on : Friday, November 6, 2020 - 11:44:07 AM
Long-term archiving on: : Wednesday, May 27, 2015 - 12:06:06 PM

File

1-s2.0-S037026931500012X-main....
Publication funded by an institution

Identifiers

Citation

J. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Measurement of the lifetime of the B+c meson using the B+c→J/ψπ+ decay mode. Physics Letters B, Elsevier, 2015, 742, pp.29-37. ⟨10.1016/j.physletb.2015.01.010⟩. ⟨in2p3-01088069⟩

Share

Metrics

Record views

596

Files downloads

1660