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Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation
We investigate the pattern of CP violation in K, B_d and B_s mixing in a symmetrical SU(2)_R x SU(2)_L x U(1) model with spontaneous CP violation. We calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant r...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
1999
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/S0550-3213(99)00824-X http://cds.cern.ch/record/402370 |
_version_ | 1780894235538489344 |
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author | Ball, Patricia Frere, J.M. Matias, J. |
author_facet | Ball, Patricia Frere, J.M. Matias, J. |
author_sort | Ball, Patricia |
collection | CERN |
description | We investigate the pattern of CP violation in K, B_d and B_s mixing in a symmetrical SU(2)_R x SU(2)_L x U(1) model with spontaneous CP violation. We calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant restrictions on the model's parameters from Delta m_K, Delta m_B, epsilon, epsilon'/epsilon and the CP asymmetry in B->J/psi K_S. We find that, with current experimental data, the mass of the right-handed charged gauge boson, M2, is restricted to be in the range 2.75 to 13 TeV and the mass of the flavour-changing neutral Higgs boson, MH, in 10.2 to 14.6 TeV. This means in particular that the decoupling limit M2, MH -> infinity is already excluded by experiment. We also find that the model favours opposite signs of epsilon and sin 2beta and is excluded if sin 2beta > 0.1. |
id | cern-402370 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1999 |
record_format | invenio |
spelling | cern-4023702023-03-14T18:45:30Zdoi:10.1016/S0550-3213(99)00824-Xhttp://cds.cern.ch/record/402370engBall, PatriciaFrere, J.M.Matias, J.Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP ViolationParticle Physics - PhenomenologyWe investigate the pattern of CP violation in K, B_d and B_s mixing in a symmetrical SU(2)_R x SU(2)_L x U(1) model with spontaneous CP violation. We calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant restrictions on the model's parameters from Delta m_K, Delta m_B, epsilon, epsilon'/epsilon and the CP asymmetry in B->J/psi K_S. We find that, with current experimental data, the mass of the right-handed charged gauge boson, M2, is restricted to be in the range 2.75 to 13 TeV and the mass of the flavour-changing neutral Higgs boson, MH, in 10.2 to 14.6 TeV. This means in particular that the decoupling limit M2, MH -> infinity is already excluded by experiment. We also find that the model favours opposite signs of epsilon and sin 2beta and is excluded if sin 2beta > 0.1.We investigate the pattern of CP violation in K 0 – K 0 ̄ , B 0 d – B 0 d ̄ and B 0 s – B 0 s ̄ mixing in a symmetrical SU(2) L ×SU(2) R ×U(1) model with spontaneous CP violation. From a set of fixed quark masses and mixings, we calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant restrictions on the model's parameters from Δm K , Δm B , ϵ , ϵ ′/ ϵ and the CP asymmetry a CP in B 0 d → J / ψK 0 S . Of 64 possible sets of phases, most are excluded because they imply opposite signs for Re ϵ and a CP . For the one remaining set, a CP is predicted to be small (⩽0.1) for the chosen input quark masses and mixings. Barring an instability with respect to these input values, the model is thus soon to be critically tested at B factories. The mass of the right-handed charged gauge boson, M 2 , is restricted to be in the range 2.75 to 13 TeV, and the mass of the flavour-changing neutral Higgs bosons, M H , in 10.2 to 14.6 TeV. This means in particular that the decoupling limit M 2 , M H →∞ is already excluded by experiment.We investigate the pattern of CP violation in K, B_d and B_s mixing in a symmetrical SU(2)_R x SU(2)_L x U(1) model with spontaneous CP violation. We calculate the phases of the left and right quark mixing matrices beyond the small phase approximation and perform a careful analysis of all relevant restrictions on the model's parameters from Delta m_K, Delta m_B, epsilon, epsilon'/epsilon and the CP asymmetry in B->J/psi K_S. We find that, with current experimental data, the mass of the right-handed charged gauge boson, M2, is restricted to be in the range 2.75 to 13 TeV and the mass of the flavour-changing neutral Higgs boson, MH, in 10.2 to 14.6 TeV. This means in particular that the decoupling limit M2, MH -> infinity is already excluded by experiment. We also find that the model favours opposite signs of epsilon and sin 2beta and is excluded if sin 2beta > 0.1.hep-ph/9910211CERN-TH-99-297ULB-TH-20CERN-TH-99-297ULB-TH-2000-20oai:cds.cern.ch:4023701999-10-05 |
spellingShingle | Particle Physics - Phenomenology Ball, Patricia Frere, J.M. Matias, J. Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title | Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title_full | Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title_fullStr | Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title_full_unstemmed | Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title_short | Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation |
title_sort | anatomy of mixing-induced cp asymmetries in left-right-symmetric models with spontaneous cp violation |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1016/S0550-3213(99)00824-X http://cds.cern.ch/record/402370 |
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