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Measurements of mean lifetime and branching fractions of b hadrons decaying to J / psi

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Measurements of mean lifetime and branching fractions of b hadrons decaying to J / psi. / ALEPH Collaboration.

In: Physics Letters B, Vol. 295, No. 3-4, 1992, p. 396-408.

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ALEPH Collaboration. / Measurements of mean lifetime and branching fractions of b hadrons decaying to J / psi. In: Physics Letters B. 1992 ; Vol. 295, No. 3-4. pp. 396-408.

Bibtex

@article{3e62d8d63d464961ab3b49199c2295eb,
title = "Measurements of mean lifetime and branching fractions of b hadrons decaying to J / psi",
abstract = "From a data sample of 450 000 hadronic events recorded with the ALEPH detector at LEP, 92±10 events are observed containing a J/ψ meson decaying to μ+μ− or e+e−. From these data the measured inclusive branching fraction for a b flavoured hadron to decay to a J/ψ is BR(b→ J/ψX) = (1.21±0.13 (stat.)±0.08 (syst.))%, and the average b hadron lifetime in the events tagged with a J/ψ is τb = 1.35+0.19−0.17±0.05 ps. Five events are observed consistent with the exclusive decay B± → J/ψK± and from these events the exclusive branching fraction is measured to be BR(B± → J/ψK±) = (0.22±0.10±0.02)%. Upper limits for other exclusive branching ratios are given.",
author = "D. Buskulic and Alexander Finch and {ALEPH Collaboration}",
year = "1992",
doi = "10.1016/0370-2693(92)91581-S",
language = "English",
volume = "295",
pages = "396--408",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "3-4",

}

RIS

TY - JOUR

T1 - Measurements of mean lifetime and branching fractions of b hadrons decaying to J / psi

AU - Buskulic, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1992

Y1 - 1992

N2 - From a data sample of 450 000 hadronic events recorded with the ALEPH detector at LEP, 92±10 events are observed containing a J/ψ meson decaying to μ+μ− or e+e−. From these data the measured inclusive branching fraction for a b flavoured hadron to decay to a J/ψ is BR(b→ J/ψX) = (1.21±0.13 (stat.)±0.08 (syst.))%, and the average b hadron lifetime in the events tagged with a J/ψ is τb = 1.35+0.19−0.17±0.05 ps. Five events are observed consistent with the exclusive decay B± → J/ψK± and from these events the exclusive branching fraction is measured to be BR(B± → J/ψK±) = (0.22±0.10±0.02)%. Upper limits for other exclusive branching ratios are given.

AB - From a data sample of 450 000 hadronic events recorded with the ALEPH detector at LEP, 92±10 events are observed containing a J/ψ meson decaying to μ+μ− or e+e−. From these data the measured inclusive branching fraction for a b flavoured hadron to decay to a J/ψ is BR(b→ J/ψX) = (1.21±0.13 (stat.)±0.08 (syst.))%, and the average b hadron lifetime in the events tagged with a J/ψ is τb = 1.35+0.19−0.17±0.05 ps. Five events are observed consistent with the exclusive decay B± → J/ψK± and from these events the exclusive branching fraction is measured to be BR(B± → J/ψK±) = (0.22±0.10±0.02)%. Upper limits for other exclusive branching ratios are given.

U2 - 10.1016/0370-2693(92)91581-S

DO - 10.1016/0370-2693(92)91581-S

M3 - Journal article

VL - 295

SP - 396

EP - 408

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3-4

ER -