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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...
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Lenguaje: | eng |
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2012
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Acceso en línea: | http://cds.cern.ch/record/1501401 |
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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 |