Measurement of Vub using b hadron semileptonic decay

G Abbiendi; Georgios Anagnostou; Paul Bell; Ian Bloodworth; David Charlton; Christopher Hawkes; Roger Homer; Predrag Jovanovic; Thomas McMahon; Stephen O'Neale; Miriam Watson; Peter Watkins; Alan Watson; Nigel Watson; John Wilson

doi:10.1007/s100520100764

Measurement of Vub using b hadron semileptonic decay

G Abbiendi, Georgios Anagnostou, Paul Bell, Ian Bloodworth, David Charlton, Christopher Hawkes, Roger Homer, Predrag Jovanovic, Thomas McMahon, Stephen O'Neale, Miriam Watson, Peter Watkins, Alan Watson, Nigel Watson, John Wilson

Physics and Astronomy

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

The magnitude of the CKM matrix element /V-ub/ is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on b --> X(u)l nu event topology and kinematics. This analysis uses OPAL data collected between 1991 and 1995, which correspond to about four million hadronic Z decays. We measure Br(b --> X(u)l nu) to be (1.63 +/-0.53 (+0.15)(-0.62)) X 10(-3). The first uncertainty is the statistical error and the second is the systematic error. From this analysis,. /V-ub/ is determined to be: /Vub/ = (4.00 +/-0.65(stat)(-0.76)(+0.67) (sys) +/- 0.19(HQE)) X 10(-3). The last error represents the theoretical uncertainties related to the extraction of /V-ub/ from Br(b --> X(u)l nu) using the Heavy Quark Expansion.

Original language	English
Pages (from-to)	399-410
Number of pages	12
Journal	European Physical Journal C
Volume	21
Issue number	3
DOIs	https://doi.org/10.1007/s100520100764
Publication status	Published - 1 Jul 2001

Access to Document

10.1007/s100520100764

Cite this

@article{173e216117ef4668b06f715d4c8d1047,

title = "Measurement of Vub using b hadron semileptonic decay",

abstract = "The magnitude of the CKM matrix element /V-ub/ is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on b --> X(u)l nu event topology and kinematics. This analysis uses OPAL data collected between 1991 and 1995, which correspond to about four million hadronic Z decays. We measure Br(b --> X(u)l nu) to be (1.63 +/-0.53 (+0.15)(-0.62)) X 10(-3). The first uncertainty is the statistical error and the second is the systematic error. From this analysis,. /V-ub/ is determined to be: /Vub/ = (4.00 +/-0.65(stat)(-0.76)(+0.67) (sys) +/- 0.19(HQE)) X 10(-3). The last error represents the theoretical uncertainties related to the extraction of /V-ub/ from Br(b --> X(u)l nu) using the Heavy Quark Expansion.",

author = "G Abbiendi and Georgios Anagnostou and Paul Bell and Ian Bloodworth and David Charlton and Christopher Hawkes and Roger Homer and Predrag Jovanovic and Thomas McMahon and Stephen O'Neale and Miriam Watson and Peter Watkins and Alan Watson and Nigel Watson and John Wilson",

year = "2001",

month = jul,

day = "1",

doi = "10.1007/s100520100764",

language = "English",

volume = "21",

pages = "399--410",

journal = "European Physical Journal C",

publisher = "Springer",

number = "3",

}

TY - JOUR

T1 - Measurement of Vub using b hadron semileptonic decay

AU - Abbiendi, G

AU - Anagnostou, Georgios

AU - Bell, Paul

AU - Bloodworth, Ian

AU - Charlton, David

AU - Hawkes, Christopher

AU - Homer, Roger

AU - Jovanovic, Predrag

AU - McMahon, Thomas

AU - O'Neale, Stephen

AU - Watson, Miriam

AU - Watkins, Peter

AU - Watson, Alan

AU - Watson, Nigel

AU - Wilson, John

PY - 2001/7/1

Y1 - 2001/7/1

N2 - The magnitude of the CKM matrix element /V-ub/ is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on b --> X(u)l nu event topology and kinematics. This analysis uses OPAL data collected between 1991 and 1995, which correspond to about four million hadronic Z decays. We measure Br(b --> X(u)l nu) to be (1.63 +/-0.53 (+0.15)(-0.62)) X 10(-3). The first uncertainty is the statistical error and the second is the systematic error. From this analysis,. /V-ub/ is determined to be: /Vub/ = (4.00 +/-0.65(stat)(-0.76)(+0.67) (sys) +/- 0.19(HQE)) X 10(-3). The last error represents the theoretical uncertainties related to the extraction of /V-ub/ from Br(b --> X(u)l nu) using the Heavy Quark Expansion.

AB - The magnitude of the CKM matrix element /V-ub/ is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on b --> X(u)l nu event topology and kinematics. This analysis uses OPAL data collected between 1991 and 1995, which correspond to about four million hadronic Z decays. We measure Br(b --> X(u)l nu) to be (1.63 +/-0.53 (+0.15)(-0.62)) X 10(-3). The first uncertainty is the statistical error and the second is the systematic error. From this analysis,. /V-ub/ is determined to be: /Vub/ = (4.00 +/-0.65(stat)(-0.76)(+0.67) (sys) +/- 0.19(HQE)) X 10(-3). The last error represents the theoretical uncertainties related to the extraction of /V-ub/ from Br(b --> X(u)l nu) using the Heavy Quark Expansion.

U2 - 10.1007/s100520100764

DO - 10.1007/s100520100764

M3 - Article

VL - 21

SP - 399

EP - 410

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -

Measurement of Vub using b hadron semileptonic decay

Abstract

Access to Document

Fingerprint

Cite this