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Электронный каталог: Gninenko, S. N. - Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs
Gninenko, S. N. - Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs
Статья
Автор: Gninenko, S. N.
Physical Review D: Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs
б.г.
ISBN отсутствует
Автор: Gninenko, S. N.
Physical Review D: Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs
б.г.
ISBN отсутствует
На полку
Статья
Gninenko, S.N.
Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs / S.N.Gninenko, N.V.Krasnikov, A.S.Zhevlakov, [a.o.]. – Text : electronic // Physical Review D. – 2026. – Vol. 113, No. 9. – P. 095028. – URL: https://doi.org/10.1103/2yms-pk6p. – Bibliogr.: 103.
We study a model in which a new interactions between the Standard Model (SM) photon and both the dark photon (𝛾&sub(𝐷)) and an axionlike particles (ALP or 𝑎) are described by the dark axion portal operator. The implications of this dark axion portal scenario for electron fixed-target experiments are presented. In particular, we investigate the missing energy signatures associated with production of dark photons and their subsequent invisible decays into stable dark sector fermions, 𝛾&sub(𝐷) →𝜒𝜒^- . We discuss the discovery potential for such a scenario and derive projected sensitivity curves for the NA64𝑒 and LDMX experiments. Furthermore, novel constraints of the NA64𝑒 for 9.37 ×10*1*1 electrons on target are derived by considering two production mechanisms for invisible states: (i) the bremsstrahlung-like emission of an 𝑎𝛾&sub(𝐷) pair, 𝑒𝑁 →𝑒𝑁𝛾*( →𝑎𝛾𝐷), and (ii) the exclusive vector meson photoproduction, 𝛾*𝑁 →𝑁𝑉, followed by the invisible decays of vector mesons, 𝑉 →𝑎𝛾&sub(𝐷). Additionally, the constraints on the parameter space of 𝐶𝑃-violating, fermion-specific ALP and dark photon couplings are established. These constraints are derived from current experimental bounds on the electric dipole moments (EDMs) of SM fermions, incorporating loop-induced contributions to the EDMs of the electron, muon, and neutron.
ОИЯИ = ОИЯИ (JINR)2026
Спец.(статьи,препринты) = С 323.5 - Теория взаимодействия частиц при высоких энергиях$
Спец.(статьи,препринты) = С 322.2 - Космология. Гравитационные волны
Gninenko, S.N.
Constraints on Dark Axion Portal: Missing Energy and Fermion EDMs / S.N.Gninenko, N.V.Krasnikov, A.S.Zhevlakov, [a.o.]. – Text : electronic // Physical Review D. – 2026. – Vol. 113, No. 9. – P. 095028. – URL: https://doi.org/10.1103/2yms-pk6p. – Bibliogr.: 103.
We study a model in which a new interactions between the Standard Model (SM) photon and both the dark photon (𝛾&sub(𝐷)) and an axionlike particles (ALP or 𝑎) are described by the dark axion portal operator. The implications of this dark axion portal scenario for electron fixed-target experiments are presented. In particular, we investigate the missing energy signatures associated with production of dark photons and their subsequent invisible decays into stable dark sector fermions, 𝛾&sub(𝐷) →𝜒𝜒^- . We discuss the discovery potential for such a scenario and derive projected sensitivity curves for the NA64𝑒 and LDMX experiments. Furthermore, novel constraints of the NA64𝑒 for 9.37 ×10*1*1 electrons on target are derived by considering two production mechanisms for invisible states: (i) the bremsstrahlung-like emission of an 𝑎𝛾&sub(𝐷) pair, 𝑒𝑁 →𝑒𝑁𝛾*( →𝑎𝛾𝐷), and (ii) the exclusive vector meson photoproduction, 𝛾*𝑁 →𝑁𝑉, followed by the invisible decays of vector mesons, 𝑉 →𝑎𝛾&sub(𝐷). Additionally, the constraints on the parameter space of 𝐶𝑃-violating, fermion-specific ALP and dark photon couplings are established. These constraints are derived from current experimental bounds on the electric dipole moments (EDMs) of SM fermions, incorporating loop-induced contributions to the EDMs of the electron, muon, and neutron.
ОИЯИ = ОИЯИ (JINR)2026
Спец.(статьи,препринты) = С 323.5 - Теория взаимодействия частиц при высоких энергиях$
Спец.(статьи,препринты) = С 322.2 - Космология. Гравитационные волны
