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

The LHCb Collaboration

doi:10.1016/j.physletb.2015.01.010

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

The LHCb Collaboration

Research output: Contribution to journal › Article › Research › peer-review

48 Citations (Scopus)

Abstract

The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected 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 Bc+→J/ψπ+ and B+→J/ψK+decays, the width difference is measured to beδΓ≡ΓBc+-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 Bc+ lifetime,τBc+=513.4±11.0±5.7fs, where the first uncertainty is statistical and the second is systematic.

Original language	English
Pages (from-to)	29-37
Number of pages	9
Journal	Physics Letters B
Volume	742
DOIs	https://doi.org/10.1016/j.physletb.2015.01.010
Publication status	Published - 2015
Externally published	Yes

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10.1016/j.physletb.2015.01.010

284998062-oaFinal published version, 631 KBLicence: CC BY

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@article{698c87455b51418696fb1af4d2ce86e0,

title = "Measurement of the lifetime of the Bc+ meson using the Bc+→ J/ψπ+ decay mode",

abstract = "The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected 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 Bc+→J/ψπ+ and B+→J/ψK+decays, the width difference is measured to beδΓ≡ΓBc+-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 Bc+ lifetime,τBc+=513.4±11.0±5.7fs, where the first uncertainty is statistical and the second is systematic.",

author = "Ulrik Egede and \{The LHCb Collaboration\}",

year = "2015",

doi = "10.1016/j.physletb.2015.01.010",

language = "English",

volume = "742",

pages = "29--37",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Measurement of the lifetime of the Bc+ meson using the Bc+→ J/ψπ+ decay mode

AU - Egede, Ulrik

AU - The LHCb Collaboration

PY - 2015

Y1 - 2015

N2 - The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected 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 Bc+→J/ψπ+ and B+→J/ψK+decays, the width difference is measured to beδΓ≡ΓBc+-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 Bc+ lifetime,τBc+=513.4±11.0±5.7fs, where the first uncertainty is statistical and the second is systematic.

AB - The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected 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 Bc+→J/ψπ+ and B+→J/ψK+decays, the width difference is measured to beδΓ≡ΓBc+-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 Bc+ lifetime,τBc+=513.4±11.0±5.7fs, where the first uncertainty is statistical and the second is systematic.

UR - https://www.scopus.com/pages/publications/84937644656

U2 - 10.1016/j.physletb.2015.01.010

DO - 10.1016/j.physletb.2015.01.010

M3 - Article

SN - 0370-2693

VL - 742

SP - 29

EP - 37

JO - Physics Letters B

JF - Physics Letters B

ER -

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

Abstract

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