Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$

We show that the decay Bs -> J/psi f0(980), f0(980)->pi+ pi- can be used to measure the CP violating phase in Bs mixing, -2\beta_s, and estimate the sensitivity as +/- 0.050 rad, for 2/fb of LHCb data. After adding in the related Bs -> J/psi eta', \eta' -> rho gamma mode, the s...

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Detalles Bibliográficos
Autores principales: Stone, Sheldon, Zhang, Liming
Lenguaje:eng
Publicado: 2009
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1205590
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author Stone, Sheldon
Zhang, Liming
author_facet Stone, Sheldon
Zhang, Liming
author_sort Stone, Sheldon
collection CERN
description We show that the decay Bs -> J/psi f0(980), f0(980)->pi+ pi- can be used to measure the CP violating phase in Bs mixing, -2\beta_s, and estimate the sensitivity as +/- 0.050 rad, for 2/fb of LHCb data. After adding in the related Bs -> J/psi eta', \eta' -> rho gamma mode, the sensitivity improves to +/- 0.044 rad. Use of these CP eigenstates obviates the need for a transversity analysis that must be used in the case of Bs -> J/psi phi decays.
id cern-1209954
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
record_format invenio
spelling cern-12099542019-09-30T06:29:59Zhttp://cds.cern.ch/record/1205590engStone, SheldonZhang, LimingMeasuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$Particle Physics - ExperimentParticle Physics - ExperimentWe show that the decay Bs -> J/psi f0(980), f0(980)->pi+ pi- can be used to measure the CP violating phase in Bs mixing, -2\beta_s, and estimate the sensitivity as +/- 0.050 rad, for 2/fb of LHCb data. After adding in the related Bs -> J/psi eta', \eta' -> rho gamma mode, the sensitivity improves to +/- 0.044 rad. Use of these CP eigenstates obviates the need for a transversity analysis that must be used in the case of Bs -> J/psi phi decays.We show that the decay Bs -> J/psi f0(980), f0(980)->pi+ pi- can be used to measure the CP violating phase in Bs mixing, -2\beta_s, and estimate the sensitivity as +/- 0.050 rad, for 2/fb of LHCb data. After adding in the related Bs -> J/psi eta', \eta' -> rho gamma mode, the sensitivity improves to +/- 0.044 rad. Use of these CP eigenstates obviates the need for a transversity analysis that must be used in the case of Bs -> J/psi phi decays.arXiv:0909.5442LHCB-PUB-2009-015CERN-LHCB-2009-037CERN-LHCB-PUB-2009-015CERN-LHCb-2009-037CERN-LHCb-PUB-2009-015oai:cds.cern.ch:12099542009-10-01
spellingShingle Particle Physics - Experiment
Particle Physics - Experiment
Stone, Sheldon
Zhang, Liming
Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title_full Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title_fullStr Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title_full_unstemmed Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title_short Measuring the CP Violating Phase in $B_s$ Mixing Using $B_s^0 \to J/\psi f_0(980)$
title_sort measuring the cp violating phase in $b_s$ mixing using $b_s^0 \to j/\psi f_0(980)$
topic Particle Physics - Experiment
Particle Physics - Experiment
url http://cds.cern.ch/record/1205590
work_keys_str_mv AT stonesheldon measuringthecpviolatingphaseinbsmixingusingbs0tojpsif0980
AT zhangliming measuringthecpviolatingphaseinbsmixingusingbs0tojpsif0980

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