Abstract
A study of possible flavour dependence of the strong interaction is presented using data collected with the OPAL detector at the e{sup +}e{sup -} collider LEP. Four subsamples of events, highly enriched in bottom, charm, strange and light quarks are obtained from high momentum electrons and muons, D{sup *{+-}} mesons, K{sub s}{sup 0} mesons, and highly energetic stable charged particles, respectively. From the jet production rates of each of these four samples a strong coupling constant {alpha}{sub s}{sup f} for the dominant quark flavour is derived. The ratios of {alpha}{sub s} for a specific quark flavour f and its complementary flavours are determined to be {alpha}{sub s}{sup b}/{alpha}{sub s}{sup udsc}=1.017{+-}0.036, {alpha}{sub s}{sup c}/{alpha}{sub s}{sup udsb}=0.918{+-}0.115, {alpha}{sub s}{sup s}/{alpha}{sub s}{sup udcb}=1.158{+-}0.164, {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup cb}=1.038 {+-} 0.221, where the errors are combinations of statistical and systematic uncertainties. In combining the relevant data samples, a systematic study of possible dependence of the strong interaction on quark mass, weak isospin, and generation is performed. No evidence for any such dependence of the strong coupling constant {alpha}{sub s} is observed. Finally all samples are combined to determine the strong coupling constant of each flavour individually. Again the results are well consistent with the
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Citation Formats
Biebel, O.
Studies on the independence of the strong interactions on the flavor quantum numbers with bottom, charm, strange, and light quarks; Untersuchungen zur Unabhaengigkeit der starken Wechselwirkung von den Flavour-Quantenzahlen mit Bottom-, Charm-, Strange- und leichten Quarks.
Germany: N. p.,
1993.
Web.
Biebel, O.
Studies on the independence of the strong interactions on the flavor quantum numbers with bottom, charm, strange, and light quarks; Untersuchungen zur Unabhaengigkeit der starken Wechselwirkung von den Flavour-Quantenzahlen mit Bottom-, Charm-, Strange- und leichten Quarks.
Germany.
Biebel, O.
1993.
"Studies on the independence of the strong interactions on the flavor quantum numbers with bottom, charm, strange, and light quarks; Untersuchungen zur Unabhaengigkeit der starken Wechselwirkung von den Flavour-Quantenzahlen mit Bottom-, Charm-, Strange- und leichten Quarks."
Germany.
@misc{etde_10153486,
title = {Studies on the independence of the strong interactions on the flavor quantum numbers with bottom, charm, strange, and light quarks; Untersuchungen zur Unabhaengigkeit der starken Wechselwirkung von den Flavour-Quantenzahlen mit Bottom-, Charm-, Strange- und leichten Quarks}
author = {Biebel, O}
abstractNote = {A study of possible flavour dependence of the strong interaction is presented using data collected with the OPAL detector at the e{sup +}e{sup -} collider LEP. Four subsamples of events, highly enriched in bottom, charm, strange and light quarks are obtained from high momentum electrons and muons, D{sup *{+-}} mesons, K{sub s}{sup 0} mesons, and highly energetic stable charged particles, respectively. From the jet production rates of each of these four samples a strong coupling constant {alpha}{sub s}{sup f} for the dominant quark flavour is derived. The ratios of {alpha}{sub s} for a specific quark flavour f and its complementary flavours are determined to be {alpha}{sub s}{sup b}/{alpha}{sub s}{sup udsc}=1.017{+-}0.036, {alpha}{sub s}{sup c}/{alpha}{sub s}{sup udsb}=0.918{+-}0.115, {alpha}{sub s}{sup s}/{alpha}{sub s}{sup udcb}=1.158{+-}0.164, {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup cb}=1.038 {+-} 0.221, where the errors are combinations of statistical and systematic uncertainties. In combining the relevant data samples, a systematic study of possible dependence of the strong interaction on quark mass, weak isospin, and generation is performed. No evidence for any such dependence of the strong coupling constant {alpha}{sub s} is observed. Finally all samples are combined to determine the strong coupling constant of each flavour individually. Again the results are well consistent with the flavour independence of QCD. (orig.)}
place = {Germany}
year = {1993}
month = {Nov}
}
title = {Studies on the independence of the strong interactions on the flavor quantum numbers with bottom, charm, strange, and light quarks; Untersuchungen zur Unabhaengigkeit der starken Wechselwirkung von den Flavour-Quantenzahlen mit Bottom-, Charm-, Strange- und leichten Quarks}
author = {Biebel, O}
abstractNote = {A study of possible flavour dependence of the strong interaction is presented using data collected with the OPAL detector at the e{sup +}e{sup -} collider LEP. Four subsamples of events, highly enriched in bottom, charm, strange and light quarks are obtained from high momentum electrons and muons, D{sup *{+-}} mesons, K{sub s}{sup 0} mesons, and highly energetic stable charged particles, respectively. From the jet production rates of each of these four samples a strong coupling constant {alpha}{sub s}{sup f} for the dominant quark flavour is derived. The ratios of {alpha}{sub s} for a specific quark flavour f and its complementary flavours are determined to be {alpha}{sub s}{sup b}/{alpha}{sub s}{sup udsc}=1.017{+-}0.036, {alpha}{sub s}{sup c}/{alpha}{sub s}{sup udsb}=0.918{+-}0.115, {alpha}{sub s}{sup s}/{alpha}{sub s}{sup udcb}=1.158{+-}0.164, {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup cb}=1.038 {+-} 0.221, where the errors are combinations of statistical and systematic uncertainties. In combining the relevant data samples, a systematic study of possible dependence of the strong interaction on quark mass, weak isospin, and generation is performed. No evidence for any such dependence of the strong coupling constant {alpha}{sub s} is observed. Finally all samples are combined to determine the strong coupling constant of each flavour individually. Again the results are well consistent with the flavour independence of QCD. (orig.)}
place = {Germany}
year = {1993}
month = {Nov}
}