Measurement of the semileptonic branching ratio of charm hadrons produced in Z0 → cc̄ decays

OPAL Collaboration

doi:10.1007/s100529900020

Measurement of the semileptonic branching ratio of charm hadrons produced in Z⁰ → cc̄ decays

OPAL Collaboration

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

7 Scopus citations

Abstract

The inclusive charm hadron semileptonic branching fractions B(c → e) and B(c → μ) in Z⁰ → cc events have been determined using 4.4 million hadronic Z⁰ decays collected with the OPAL detector at LEP. A charm-enriched sample is obtained by selecting events with reconstructed D*± mesons. Using leptons found in the hemisphere opposite that of the D*± mesons, the semileptonic branching fractions of charm hadrons are measured to be B(c → e) = 0.103 ±0.009^+0.009_-0.008 and B(c→ μ) = 0.090 ±0.007^+0.007_-0.006, where the first errors are in each case statistical and the second systematic. Combining these measurements, an inclusive semileptonic branching fraction of charm hadrons of B(c → ℓ) = 0.095 ±0.006^+0.007_-0.006 is obtained.

Original language	English
Pages (from-to)	573-584
Number of pages	12
Journal	European Physical Journal C
Volume	8
Issue number	4
DOIs	https://doi.org/10.1007/s100529900020
State	Published - 1 Jan 1999
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1007/s100529900020

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@article{29cf6940d5084b44949d9046053dc95d,

title = "Measurement of the semileptonic branching ratio of charm hadrons produced in Z0 → c{\=c} decays",

abstract = "The inclusive charm hadron semileptonic branching fractions B(c → e) and B(c → μ) in Z0 → cc events have been determined using 4.4 million hadronic Z0 decays collected with the OPAL detector at LEP. A charm-enriched sample is obtained by selecting events with reconstructed D*± mesons. Using leptons found in the hemisphere opposite that of the D*± mesons, the semileptonic branching fractions of charm hadrons are measured to be B(c → e) = 0.103 ±0.009+0.009-0.008 and B(c→ μ) = 0.090 ±0.007+0.007-0.006, where the first errors are in each case statistical and the second systematic. Combining these measurements, an inclusive semileptonic branching fraction of charm hadrons of B(c → ℓ) = 0.095 ±0.006+0.007-0.006 is obtained.",

author = "{OPAL Collaboration} and G. Abbiendi and K. Ackerstaff and G. Alexander and J. Allison and N. Altekamp and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and Ashby, {S. F.} and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and S. Baumann and J. Bechtluft and T. Behnke and Bell, {K. W.} and G. Bella and A. Bellerive and S. Bentvelsen and S. Bethke and S. Betts and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and M. Bobinski and P. Bock and J. B{\"o}hme and D. Bonacorsi and M. Boutemeur and S. Braibant and P. Bright-Thomas and L. Brigliadori and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and R. Folman",

year = "1999",

month = jan,

day = "1",

doi = "10.1007/s100529900020",

language = "English",

volume = "8",

pages = "573--584",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "4",

}

TY - JOUR

T1 - Measurement of the semileptonic branching ratio of charm hadrons produced in Z0 → cc̄ decays

AU - OPAL Collaboration

AU - Abbiendi, G.

AU - Ackerstaff, K.

AU - Alexander, G.

AU - Allison, J.

AU - Altekamp, N.

AU - Anderson, K. J.

AU - Anderson, S.

AU - Arcelli, S.

AU - Asai, S.

AU - Ashby, S. F.

AU - Axen, D.

AU - Azuelos, G.

AU - Ball, A. H.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Baumann, S.

AU - Bechtluft, J.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Bellerive, A.

AU - Bentvelsen, S.

AU - Bethke, S.

AU - Betts, S.

AU - Biebel, O.

AU - Biguzzi, A.

AU - Bird, S. D.

AU - Blobel, V.

AU - Bloodworth, I. J.

AU - Bobinski, M.

AU - Bock, P.

AU - Böhme, J.

AU - Bonacorsi, D.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Bright-Thomas, P.

AU - Brigliadori, L.

AU - Brown, R. M.

AU - Burckhart, H. J.

AU - Burgard, C.

AU - Bürgin, R.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Folman, R.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The inclusive charm hadron semileptonic branching fractions B(c → e) and B(c → μ) in Z0 → cc events have been determined using 4.4 million hadronic Z0 decays collected with the OPAL detector at LEP. A charm-enriched sample is obtained by selecting events with reconstructed D*± mesons. Using leptons found in the hemisphere opposite that of the D*± mesons, the semileptonic branching fractions of charm hadrons are measured to be B(c → e) = 0.103 ±0.009+0.009-0.008 and B(c→ μ) = 0.090 ±0.007+0.007-0.006, where the first errors are in each case statistical and the second systematic. Combining these measurements, an inclusive semileptonic branching fraction of charm hadrons of B(c → ℓ) = 0.095 ±0.006+0.007-0.006 is obtained.

AB - The inclusive charm hadron semileptonic branching fractions B(c → e) and B(c → μ) in Z0 → cc events have been determined using 4.4 million hadronic Z0 decays collected with the OPAL detector at LEP. A charm-enriched sample is obtained by selecting events with reconstructed D*± mesons. Using leptons found in the hemisphere opposite that of the D*± mesons, the semileptonic branching fractions of charm hadrons are measured to be B(c → e) = 0.103 ±0.009+0.009-0.008 and B(c→ μ) = 0.090 ±0.007+0.007-0.006, where the first errors are in each case statistical and the second systematic. Combining these measurements, an inclusive semileptonic branching fraction of charm hadrons of B(c → ℓ) = 0.095 ±0.006+0.007-0.006 is obtained.

UR - http://www.scopus.com/inward/record.url?scp=0013102613&partnerID=8YFLogxK

U2 - 10.1007/s100529900020

DO - 10.1007/s100529900020

M3 - Article

AN - SCOPUS:0013102613

SN - 1434-6044

VL - 8

SP - 573

EP - 584

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

Measurement of the semileptonic branching ratio of charm hadrons produced in Z⁰ → cc̄ decays

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