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An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation
Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the CP-violating effects in these modes are tiny in th...
Autores principales: | , |
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Lenguaje: | eng |
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1999
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(00)00061-7 http://cds.cern.ch/record/411923 |
_version_ | 1780894649375784960 |
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author | Ball, Patricia Fleischer, Robert |
author_facet | Ball, Patricia Fleischer, Robert |
author_sort | Ball, Patricia |
collection | CERN |
description | Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the CP-violating effects in these modes are tiny in the Standard Model. We explore these effects for a particular scenario of new physics, the left-right-symmetric model with spontaneous CP violation. In our analysis, we take into account all presently available experimental constraints on the parameters of this model, i.e. those implied by K- and B-decay observables; we find that CP asymmetries as large as O(40%) may arise in the B_s channels, whereas the left-right-symmetric model favours a small CP asymmetry in the ``gold-plated'' mode B_d -> J/psi K_S. Such a pattern would be in favour of B-physics experiments at hadron machines, where the B_s modes are very accessible. |
id | cern-411923 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1999 |
record_format | invenio |
spelling | cern-4119232023-03-14T19:55:21Zdoi:10.1016/S0370-2693(00)00061-7http://cds.cern.ch/record/411923engBall, PatriciaFleischer, RobertAn Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP ViolationParticle Physics - PhenomenologyNon-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the CP-violating effects in these modes are tiny in the Standard Model. We explore these effects for a particular scenario of new physics, the left-right-symmetric model with spontaneous CP violation. In our analysis, we take into account all presently available experimental constraints on the parameters of this model, i.e. those implied by K- and B-decay observables; we find that CP asymmetries as large as O(40%) may arise in the B_s channels, whereas the left-right-symmetric model favours a small CP asymmetry in the ``gold-plated'' mode B_d -> J/psi K_S. Such a pattern would be in favour of B-physics experiments at hadron machines, where the B_s modes are very accessible.Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the CP-violating effects in these modes are tiny in the Standard Model. We explore these effects for a particular scenario of new physics, the left-right-symmetric model with spontaneous CP violation. In our analysis, we take into account all presently available experimental constraints on the parameters of this model, i.e. those implied by K- and B-decay observables; we find that CP asymmetries as large as O(40%) may arise in the B_s channels, whereas the left-right-symmetric model favours a small CP asymmetry in the ``gold-plated'' mode B_d -> J/psi K_S. Such a pattern would be in favour of B-physics experiments at hadron machines, where the B_s modes are very accessible.Non-leptonic B s decays into CP eigenstates that are caused by b ̄ → c ̄ c s ̄ quark-level transitions, such as B s → D s + D − s , J/ψ η (′) or J/ψ φ , provide a powerful tool to search for “new physics”, as the CP-violating effects in these modes are tiny in the Standard Model. We explore these effects for a particular scenario of new physics, the left-right-symmetric model with spontaneous CP violation. In our analysis, we take into account all presently available experimental constraints on the parameters of this model, i.e. those implied by K - and B -decay observables; we find that CP asymmetries as large as O (40%) may arise in the B s channels, whereas the left-right-symmetric model favours a small CP asymmetry in the “gold-plated” mode B d →J/ψ K S . Such a pattern would be in favour of B -physics experiments at hadron machines, where the B s modes are very accessible.hep-ph/9912319CERN-TH-99-377DESY-99-191CERN-TH-99-377DESY-99-191oai:cds.cern.ch:4119231999-12-14 |
spellingShingle | Particle Physics - Phenomenology Ball, Patricia Fleischer, Robert An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title | An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title_full | An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title_fullStr | An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title_full_unstemmed | An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title_short | An Analysis of $B_{s}$ Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation |
title_sort | analysis of $b_{s}$ decays in the left-right-symmetric model with spontaneous cp violation |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1016/S0370-2693(00)00061-7 http://cds.cern.ch/record/411923 |
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