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Deuteron EDM induced by CP-violating couplings of pseudoscalar mesons

Авторы: Zhevlakov A.S., Lyubovitskij V.E.

Журнал: Physical Review D

Том: 101

Номер: 11

Год: 2020

Отчётный год: 2020

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Местоположение издательства:

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DOI: 10.1103/PhysRevD.101.11504

Аннотация: We analyze contributions to the electric dipole moment (EDM) and Schiff moment of deuteron induced by the CP-violating three-pseudoscalar meson couplings using phenomenological Lagrangian approach involving nucleons and pseudoscalar mesons P = pi, K, eta, eta',. Deuteron is considered as a proton-neutron bound state and its properties are defined by one- and two-body forces. One-body forces correspond to a picture there; proton and neutron are quasifree constituents of deuteron and their contribution to the deuteron EDM (dEDM) is simply the sum of proton and neutron EDMs. Two-body forces in deuteron are induced by one-meson exchange between nucleons. They produce a contribution to the dEDM, which is estimated using corresponding potential approach. From numerical analysis of nucleon and deuteron EDMs, we derive stringent limits on CP-violating hadronic couplings and (theta) over bar parameter. We showed that proposed measurements of proton and deuteron EDMs at level of similar to 10(-29) by the Store Ring EDM and JEDI Collaborations will provide more stringent upper limits on the CP-violating parameters.

Индексируется WOS: Q1

Индексируется Scopus: Нет

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Индексируется РИНЦ: Нет

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