A realistic formulation of approximate CP

CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP viola...

Descripción completa

Detalles Bibliográficos
Autores principales: Dent, Thomas, Silva-Marcos, Joaquim
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(03)00005-1
http://cds.cern.ch/record/558682
_version_ 1780899025792270336
author Dent, Thomas
Silva-Marcos, Joaquim
author_facet Dent, Thomas
Silva-Marcos, Joaquim
author_sort Dent, Thomas
collection CERN
description CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP violation'' to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits; for nonuniversal A-terms, EDM bounds can be satisfied given certain flavour structures. The proposal is conveniently formulated in a democratic basis, with Yukawas and soft terms of the form const x (1+eps+i zeta) where eps<<1, zeta<~10^(-3), motivated by approximate permutation x CP symmetry.
id cern-558682
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-5586822019-09-30T06:29:59Zdoi:10.1016/S0550-3213(03)00005-1http://cds.cern.ch/record/558682engDent, ThomasSilva-Marcos, JoaquimA realistic formulation of approximate CPParticle Physics - PhenomenologyCP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP violation'' to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits; for nonuniversal A-terms, EDM bounds can be satisfied given certain flavour structures. The proposal is conveniently formulated in a democratic basis, with Yukawas and soft terms of the form const x (1+eps+i zeta) where eps<<1, zeta<~10^(-3), motivated by approximate permutation x CP symmetry.CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP violation'' to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits: for nonuniversal A-terms, EDM bounds can be satisfied given certain flavour structures. The proposal is conveniently formulated in a democratic basis, with Yukawas and soft terms of the form const. x (1+eps+i zeta) where eps<<1, zeta<~10^(-3), motivated by approximate permutation x CP symmetry.CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP violation'' to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits: for nonuniversal A-terms, EDM bounds can be satisfied given certain flavour structures. The proposal is conveniently formulated in a democratic basis, with Yukawas and soft terms of the form const. x (1+eps+i zeta) where eps<<1, zeta<~10^(-3), motivated by approximate permutation x CP symmetry.CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B_d decays can arise if the imaginary parts of quark mass matrices are of order 10^(-3)m_t,b or smaller. Applying the same principle of ``additive CP violation'' to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits: for nonuniversal A-terms, EDM bounds can be satisfied given certain flavour structures. The proposal is conveniently formulated in a democratic basis, with Yukawas and soft terms of the form const. x (1+eps+i zeta) where eps<<1, zeta<~10^(-3), motivated by approximate permutation x CP symmetry.CP violation in the SM is naturally implemented as a small imaginary perturbation to real Yukawa couplings. For example, a large CP asymmetry in B d decays can arise if the imaginary parts of quark mass matrices are of order 10 −3 m t , b or smaller. Applying the principle of “additive CP violation” to soft SUSY-breaking terms, the electric dipole moments of the neutron and mercury atom are predicted near current experimental limits; for nonuniversal A -terms, EDM bounds can be satisfied given certain flavour structures. The proposal may be formulated in a democratic basis, with Yukawas and soft terms of the form const·(1+ ϵ + iζ ) where | ϵ |⪡1, | ζ |≲10 −3 , motivated by approximate permutation × CP symmetry.hep-ph/0206086MCTP-02-30MCTP-2002-30oai:cds.cern.ch:5586822002-06-09
spellingShingle Particle Physics - Phenomenology
Dent, Thomas
Silva-Marcos, Joaquim
A realistic formulation of approximate CP
title A realistic formulation of approximate CP
title_full A realistic formulation of approximate CP
title_fullStr A realistic formulation of approximate CP
title_full_unstemmed A realistic formulation of approximate CP
title_short A realistic formulation of approximate CP
title_sort realistic formulation of approximate cp
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0550-3213(03)00005-1
http://cds.cern.ch/record/558682
work_keys_str_mv AT dentthomas arealisticformulationofapproximatecp
AT silvamarcosjoaquim arealisticformulationofapproximatecp
AT dentthomas realisticformulationofapproximatecp
AT silvamarcosjoaquim realisticformulationofapproximatecp

Ejemplares similares