A study of charm production in beauty decays with the OPAL detector at LEP

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

doi:10.1140/epjc/s2004-01810-9

A study of charm production in beauty decays with the OPAL detector at LEP

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

Physics and Astronomy

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Abstract

The branching ratio of beauty hadrons to final states containing two charm hadrons, Br(b-->D (D) over barX), has been measured using an inclusive method in hadronic Z(0) decays with the OPAL detector at LEP. The impact parameter significance of tracks opposite tagged b-jets is used to differentiate b-->D (D) over barX decays from other decays. The result is Br(b-->D (D) over barX) = (10.0 +/- 3.2 (stat.)(-2.9)(+2.4)(det.)(-9.0)(+10.4) (phys.))%, where "det." is the systematic uncertainty due to the modelling of the detector, and "phys." is the systematic uncertainty due to the modelling of the underlying physics. Using this result, the average number of charm plus anti-charm quarks produced in a beauty quark decay, n(c), is found to be 1.12(-0.10)(+0.11).

Original language	English
Pages (from-to)	149-158
Number of pages	10
Journal	European Physical Journal C
Volume	35
Issue number	2
DOIs	https://doi.org/10.1140/epjc/s2004-01810-9
Publication status	Published - 1 Jun 2004

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@article{f0b57902db8b4da295e0e9f98786bd5e,

title = "A study of charm production in beauty decays with the OPAL detector at LEP",

abstract = "The branching ratio of beauty hadrons to final states containing two charm hadrons, Br(b-->D (D) over barX), has been measured using an inclusive method in hadronic Z(0) decays with the OPAL detector at LEP. The impact parameter significance of tracks opposite tagged b-jets is used to differentiate b-->D (D) over barX decays from other decays. The result is Br(b-->D (D) over barX) = (10.0 +/- 3.2 (stat.)(-2.9)(+2.4)(det.)(-9.0)(+10.4) (phys.))%, where {"}det.{"} is the systematic uncertainty due to the modelling of the detector, and {"}phys.{"} is the systematic uncertainty due to the modelling of the underlying physics. Using this result, the average number of charm plus anti-charm quarks produced in a beauty quark decay, n(c), is found to be 1.12(-0.10)(+0.11).",

author = "G Abbiendi and Georgios Anagnostou and Paul Bell and David Charlton and Christopher Hawkes 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 = "2004",

month = jun,

day = "1",

doi = "10.1140/epjc/s2004-01810-9",

language = "English",

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journal = "European Physical Journal C",

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TY - JOUR

T1 - A study of charm production in beauty decays with the OPAL detector at LEP

AU - Abbiendi, G

AU - Anagnostou, Georgios

AU - Bell, Paul

AU - Charlton, David

AU - Hawkes, Christopher

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 - 2004/6/1

Y1 - 2004/6/1

N2 - The branching ratio of beauty hadrons to final states containing two charm hadrons, Br(b-->D (D) over barX), has been measured using an inclusive method in hadronic Z(0) decays with the OPAL detector at LEP. The impact parameter significance of tracks opposite tagged b-jets is used to differentiate b-->D (D) over barX decays from other decays. The result is Br(b-->D (D) over barX) = (10.0 +/- 3.2 (stat.)(-2.9)(+2.4)(det.)(-9.0)(+10.4) (phys.))%, where "det." is the systematic uncertainty due to the modelling of the detector, and "phys." is the systematic uncertainty due to the modelling of the underlying physics. Using this result, the average number of charm plus anti-charm quarks produced in a beauty quark decay, n(c), is found to be 1.12(-0.10)(+0.11).

AB - The branching ratio of beauty hadrons to final states containing two charm hadrons, Br(b-->D (D) over barX), has been measured using an inclusive method in hadronic Z(0) decays with the OPAL detector at LEP. The impact parameter significance of tracks opposite tagged b-jets is used to differentiate b-->D (D) over barX decays from other decays. The result is Br(b-->D (D) over barX) = (10.0 +/- 3.2 (stat.)(-2.9)(+2.4)(det.)(-9.0)(+10.4) (phys.))%, where "det." is the systematic uncertainty due to the modelling of the detector, and "phys." is the systematic uncertainty due to the modelling of the underlying physics. Using this result, the average number of charm plus anti-charm quarks produced in a beauty quark decay, n(c), is found to be 1.12(-0.10)(+0.11).

U2 - 10.1140/epjc/s2004-01810-9

DO - 10.1140/epjc/s2004-01810-9

M3 - Article

SN - 1434-6044

VL - 35

SP - 149

EP - 158

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

ER -

A study of charm production in beauty decays with the OPAL detector at LEP

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