Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb

The interference between Bs decay amplitudes to CP eigenstates Jpsi X directly or including Bs-Bsbar oscillation gives rise to a measurable CP violating phase phi_s. Here, a preliminary measurement of phi_s with Bs -> JpsiK+K- decays, and the measurement using Bs->Jpsipi+pi- decays, both obtai...

Descripción completa

Detalles Bibliográficos
Autor principal: Raven, Gerhard
Lenguaje:eng
Publicado: 2012
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1501401
_version_ 1780927043072950272
author Raven, Gerhard
author_facet Raven, Gerhard
author_sort Raven, Gerhard
collection CERN
description The interference between Bs decay amplitudes to CP eigenstates Jpsi X directly or including Bs-Bsbar oscillation gives rise to a measurable CP violating phase phi_s. Here, a preliminary measurement of phi_s with Bs -> JpsiK+K- decays, and the measurement using Bs->Jpsipi+pi- decays, both obtained from a sample of 1/fb of pp collisions, collected by the LHCb experiment at a centre-of-mass energy sqrt{s}=7 TeV during 2011, are presented. In addition, the determination of the branching fraction and polarization fractions of Bs->JpsiKstbar, which can be used to constrain the contribution of sub-leading penguin contributions to the decay Bs->Jpsi phi, is shown.
id cern-1501401
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-15014012023-03-14T16:32:45Zhttp://cds.cern.ch/record/1501401engRaven, GerhardMeasurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCbParticle Physics - ExperimentThe interference between Bs decay amplitudes to CP eigenstates Jpsi X directly or including Bs-Bsbar oscillation gives rise to a measurable CP violating phase phi_s. Here, a preliminary measurement of phi_s with Bs -> JpsiK+K- decays, and the measurement using Bs->Jpsipi+pi- decays, both obtained from a sample of 1/fb of pp collisions, collected by the LHCb experiment at a centre-of-mass energy sqrt{s}=7 TeV during 2011, are presented. In addition, the determination of the branching fraction and polarization fractions of Bs->JpsiKstbar, which can be used to constrain the contribution of sub-leading penguin contributions to the decay Bs->Jpsi phi, is shown.The interference between Bs decay amplitudes to CP eigenstates Jpsi X directly or including Bs-Bsbar oscillation gives rise to a measurable CP violating phase phi_s. Here, a preliminary measurement of phi_s with Bs -> JpsiK+K- decays, and the measurement using Bs->Jpsipi+pi- decays, both obtained from a sample of 1/fb of pp collisions, collected by the LHCb experiment at a centre-of-mass energy sqrt{s}=7 TeV during 2011, are presented. In addition, the determination of the branching fraction and polarization fractions of Bs->JpsiKstbar, which can be used to constrain the contribution of sub-leading penguin contributions to the decay Bs->Jpsi phi, is shown.arXiv:1212.4140oai:cds.cern.ch:15014012012-12-18
spellingShingle Particle Physics - Experiment
Raven, Gerhard
Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title_full Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title_fullStr Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title_full_unstemmed Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title_short Measurement of the CP violation phase $\phi_s$ in the $B_s$ system at LHCb
title_sort measurement of the cp violation phase $\phi_s$ in the $b_s$ system at lhcb
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1501401
work_keys_str_mv AT ravengerhard measurementofthecpviolationphasephisinthebssystematlhcb

Ejemplares similares