Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ

The ratio of branching fractions of the radiative B decays B0→K∗0γ andB0s→φγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of √s=7 TeV. The value obtained is B(B0→K∗0γ)B(B0s→φγ )=1.23±0.06 (stat.)±0.04 (s...

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Authors: Abellan Beteta, Carlos, Calvo Gomez, Miriam, Domingo Bonal, Francesc, Roselló-Canal, Maria del Mar, Camboni, Alessandro, Vilasis-Cardona, Xavier, LHCb Collaboration - CERN
Format: article
Status:Published version
Publication Date:2012
Country:España
Institution:Universitat Ramon Llull (URL)
Repository:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/3478
Online Access:http://hdl.handle.net/20.500.14342/3478
https://doi.org/10.1016/j.nuclphysb.2012.09.013
Access Level:Open access
Keyword:Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Col·lisions (Física nuclear)
Partícules (Física nuclear)
539
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spelling Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γAbellan Beteta, CarlosCalvo Gomez, MiriamDomingo Bonal, FrancescRoselló-Canal, Maria del MarCamboni, AlessandroVilasis-Cardona, XavierLHCb Collaboration - CERNGran col·lisionador d'hadrons (França i Suïssa)Interaccions d'hadronsCol·lisions (Física nuclear)Partícules (Física nuclear)539The ratio of branching fractions of the radiative B decays B0→K∗0γ andB0s→φγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of √s=7 TeV. The value obtained is B(B0→K∗0γ)B(B0s→φγ )=1.23±0.06 (stat.)±0.04 (syst.)±0.10(fs/fd), where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the thirdis associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K∗0γ), the branching fractionB(B0s→φγ ) is measured to be(3.5±0.4)×10−5.The direct CP asymmetry in B0→K∗0γ decays has also been measured with the same data and found to be ACP(B0→K∗0γ)=(0.8±1.7(stat.)±0.9 (syst.))%. Both measurements are the most precise to date and are in agreement with the previous experimentalresults and theoretical expectations.ElsevierUniversitat Ramon Llull. La SalleCERN20212023202120232012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion18 p.application/pdfhttp://hdl.handle.net/20.500.14342/3478https://doi.org/10.1016/j.nuclphysb.2012.09.013RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésNuclear Physics B, 2012, Vol. 867Attribution-NonCommercial-NoDerivatives 4.0 International© CERNhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/34782026-06-21T06:40:37Z
dc.title.none.fl_str_mv Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
title Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
spellingShingle Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
Abellan Beteta, Carlos
Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Col·lisions (Física nuclear)
Partícules (Física nuclear)
539
title_short Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
title_full Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
title_fullStr Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
title_full_unstemmed Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
title_sort Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ
dc.creator.none.fl_str_mv Abellan Beteta, Carlos
Calvo Gomez, Miriam
Domingo Bonal, Francesc
Roselló-Canal, Maria del Mar
Camboni, Alessandro
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author Abellan Beteta, Carlos
author_facet Abellan Beteta, Carlos
Calvo Gomez, Miriam
Domingo Bonal, Francesc
Roselló-Canal, Maria del Mar
Camboni, Alessandro
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author_role author
author2 Calvo Gomez, Miriam
Domingo Bonal, Francesc
Roselló-Canal, Maria del Mar
Camboni, Alessandro
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universitat Ramon Llull. La Salle
CERN
dc.subject.none.fl_str_mv Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Col·lisions (Física nuclear)
Partícules (Física nuclear)
539
topic Gran col·lisionador d'hadrons (França i Suïssa)
Interaccions d'hadrons
Col·lisions (Física nuclear)
Partícules (Física nuclear)
539
description The ratio of branching fractions of the radiative B decays B0→K∗0γ andB0s→φγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of √s=7 TeV. The value obtained is B(B0→K∗0γ)B(B0s→φγ )=1.23±0.06 (stat.)±0.04 (syst.)±0.10(fs/fd), where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the thirdis associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K∗0γ), the branching fractionB(B0s→φγ ) is measured to be(3.5±0.4)×10−5.The direct CP asymmetry in B0→K∗0γ decays has also been measured with the same data and found to be ACP(B0→K∗0γ)=(0.8±1.7(stat.)±0.9 (syst.))%. Both measurements are the most precise to date and are in agreement with the previous experimentalresults and theoretical expectations.
publishDate 2012
dc.date.none.fl_str_mv 2012
2021
2021
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.14342/3478
https://doi.org/10.1016/j.nuclphysb.2012.09.013
url http://hdl.handle.net/20.500.14342/3478
https://doi.org/10.1016/j.nuclphysb.2012.09.013
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Nuclear Physics B, 2012, Vol. 867
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
© CERN
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
© CERN
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 18 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv RECERCAT (Dipòsit de la Recerca de Catalunya)
reponame:DAU Arxiu Digital de la Universitat Ramon Llull
instname:Universitat Ramon Llull (URL)
instname_str Universitat Ramon Llull (URL)
reponame_str DAU Arxiu Digital de la Universitat Ramon Llull
collection DAU Arxiu Digital de la Universitat Ramon Llull
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411683712106496
score 15,300724

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