NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)

We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calcul...

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Detalles Bibliográficos
Autores principales: Asatrian, H.M., Hovhannisyan, A., Poghosyan, V., Ewerth, T., Greub, C., Hurth, T.
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2006.05.026
http://cds.cern.ch/record/944800
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author Asatrian, H.M.
Hovhannisyan, A.
Poghosyan, V.
Ewerth, T.
Greub, C.
Hurth, T.
author_facet Asatrian, H.M.
Hovhannisyan, A.
Poghosyan, V.
Ewerth, T.
Greub, C.
Hurth, T.
author_sort Asatrian, H.M.
collection CERN
description We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of \Gamma(\bar B -> X_s \gamma) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.
id cern-944800
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-9448002023-03-14T20:24:00Zdoi:10.1016/j.nuclphysb.2006.05.026http://cds.cern.ch/record/944800engAsatrian, H.M.Hovhannisyan, A.Poghosyan, V.Ewerth, T.Greub, C.Hurth, T.NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)Particle Physics - PhenomenologyWe present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of \Gamma(\bar B -> X_s \gamma) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of \Gamma(\bar B -> X_s \gamma) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of \Gamma(\bar B -> X_s \gamma) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.We present an independent calculation of that part of the O ( α s 2 ) contribution to the decay width Γ ( B ¯ → X s γ ) which arises from the self-interference term of the electromagnetic dipole operator O 7 . Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of Γ ( B ¯ → X s γ ) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.hep-ph/0605009SLAC-PUB-11841CERN-PH-TH-2006-074CERN-PH-TH-2006-074SLAC-PUB-11841oai:cds.cern.ch:9448002006-04-30
spellingShingle Particle Physics - Phenomenology
Asatrian, H.M.
Hovhannisyan, A.
Poghosyan, V.
Ewerth, T.
Greub, C.
Hurth, T.
NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title_full NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title_fullStr NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title_full_unstemmed NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title_short NNLL QCD contribution of the electromagnetic dipole operator to Gamma(anti-B ---> X(s) gamma)
title_sort nnll qcd contribution of the electromagnetic dipole operator to gamma(anti-b ---> x(s) gamma)
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysb.2006.05.026
http://cds.cern.ch/record/944800
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AT hovhannisyana nnllqcdcontributionoftheelectromagneticdipoleoperatortogammaantibxsgamma
AT poghosyanv nnllqcdcontributionoftheelectromagneticdipoleoperatortogammaantibxsgamma
AT ewertht nnllqcdcontributionoftheelectromagneticdipoleoperatortogammaantibxsgamma
AT greubc nnllqcdcontributionoftheelectromagneticdipoleoperatortogammaantibxsgamma
AT hurtht nnllqcdcontributionoftheelectromagneticdipoleoperatortogammaantibxsgamma

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