Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays

Physics

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https://doi.org/10.1007/s100520050133
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Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays. / ALEPH Collaboration, The; Barate, R.; Betteridge, Andrew et al.
In: European Physical Journal C: Particles and Fields, Vol. 2, No. 2, 04.1998, p. 197-211.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

ALEPH Collaboration, T, Barate, R, Betteridge, A, Bowdery, C, Colrain, P, Finch, A, Foster, F, Hughes, G , Jones, R , Sloan, T & Williams, M 1998, 'Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays', European Physical Journal C: Particles and Fields, vol. 2, no. 2, pp. 197-211. https://doi.org/10.1007/s100520050133

APA

ALEPH Collaboration, T., Barate, R., Betteridge, A., Bowdery, C., Colrain, P., Finch, A., Foster, F., Hughes, G., Jones, R., Sloan, T., & Williams, M. (1998). Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays. European Physical Journal C: Particles and Fields, 2(2), 197-211. https://doi.org/10.1007/s100520050133

Vancouver

ALEPH Collaboration T, Barate R, Betteridge A, Bowdery C, Colrain P, Finch A et al. Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays. European Physical Journal C: Particles and Fields. 1998 Apr;2(2):197-211. doi: 10.1007/s100520050133

Author

ALEPH Collaboration, The ; Barate, R. ; Betteridge, Andrew et al. / Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays. In: European Physical Journal C: Particles and Fields. 1998 ; Vol. 2, No. 2. pp. 197-211.

Bibtex

@article{e96936436cbf4998afaf258dbf3b3ea4,

title = "Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays",

abstract = "Using approximately 4 million hadronic Z decays recorded with the aleph detector from 1991 through 1995, the lifetime of the b baryon is measured with three independent methods. From the impact parameter distribution of candidate leptons in 1063 events with Λℓ− combinations, the average b baryon lifetime is measured to be 1.20±0.08±0.06 ps. From a sample of 193 fully reconstructed Λ+c candidates correlated with a lepton and a sample of 46 Λℓ+ℓ− combinations, the Λb lifetime is measured to be 1.21±0.11 ps. The product branching fractions to these final states are Br(b→Λb⋅BR(Λb→Λℓ−ν¯X)=0.326±0.016±0.039 % for the first sample and Br(b→Λb⋅BR(Λb→Λ+cℓ−ν¯X)=0.86±0.07±0.14 % for the second and third samples combined.",

author = "{ALEPH Collaboration}, The and R. Barate and Andrew Betteridge and Christopher Bowdery and Paul Colrain and Alexander Finch and Frank Foster and Gareth Hughes and Roger Jones and Terence Sloan and Mark Williams",

year = "1998",

month = apr,

doi = "10.1007/s100520050133",

language = "English",

volume = "2",

pages = "197--211",

journal = "European Physical Journal C: Particles and Fields",

issn = "1434-6044",

publisher = "SPRINGER",

number = "2",

}

RIS

TY - JOUR

T1 - Measurement of the $B$ baryon lifetime and branching fractions in $Z$ decays

AU - ALEPH Collaboration, The

AU - Barate, R.

AU - Betteridge, Andrew

AU - Bowdery, Christopher

AU - Colrain, Paul

AU - Finch, Alexander

AU - Foster, Frank

AU - Hughes, Gareth

AU - Jones, Roger

AU - Sloan, Terence

AU - Williams, Mark

PY - 1998/4

Y1 - 1998/4

N2 - Using approximately 4 million hadronic Z decays recorded with the aleph detector from 1991 through 1995, the lifetime of the b baryon is measured with three independent methods. From the impact parameter distribution of candidate leptons in 1063 events with Λℓ− combinations, the average b baryon lifetime is measured to be 1.20±0.08±0.06 ps. From a sample of 193 fully reconstructed Λ+c candidates correlated with a lepton and a sample of 46 Λℓ+ℓ− combinations, the Λb lifetime is measured to be 1.21±0.11 ps. The product branching fractions to these final states are Br(b→Λb⋅BR(Λb→Λℓ−ν¯X)=0.326±0.016±0.039 % for the first sample and Br(b→Λb⋅BR(Λb→Λ+cℓ−ν¯X)=0.86±0.07±0.14 % for the second and third samples combined.

AB - Using approximately 4 million hadronic Z decays recorded with the aleph detector from 1991 through 1995, the lifetime of the b baryon is measured with three independent methods. From the impact parameter distribution of candidate leptons in 1063 events with Λℓ− combinations, the average b baryon lifetime is measured to be 1.20±0.08±0.06 ps. From a sample of 193 fully reconstructed Λ+c candidates correlated with a lepton and a sample of 46 Λℓ+ℓ− combinations, the Λb lifetime is measured to be 1.21±0.11 ps. The product branching fractions to these final states are Br(b→Λb⋅BR(Λb→Λℓ−ν¯X)=0.326±0.016±0.039 % for the first sample and Br(b→Λb⋅BR(Λb→Λ+cℓ−ν¯X)=0.86±0.07±0.14 % for the second and third samples combined.

U2 - 10.1007/s100520050133

DO - 10.1007/s100520050133

M3 - Journal article

VL - 2

SP - 197

EP - 211

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 2

ER -

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