Results 1 to 10 of about 487,390 (284)

CP violation of the loop induced H± → W±Z decays in the general two Higgs doublet model* [PDF]

EPJ Web of Conferences
New sources of CP violation are necessary to solve the problem of the baryon asymmetry of the Universe. Extending the Higgs sector is one way to introduce such new CP violating phases, and studying observables resulting from the CP violation is important
Mura Yushi, Kanemura Shinya
doaj   +1 more source

Baryogenesis from primordial CP violation

Journal of High Energy Physics
We present a novel baryogenesis mechanism in a three-Higgs doublet model. The lightest doublet plays the role of the standard Higgs, and there are two heavier Higgs bosons.
Venus Keus, Edward W. Kolb
doaj   +1 more source

Leptonic CP violation from a vector-like lepton

Journal of High Energy Physics, 2022
Leptonic CP violation is yet to be confirmed as an additional source of CP violation in fundamental interactions. We study the case where leptonic CP violation is spontaneous and is induced by the mixing with a heavy charged vector-like lepton (VLL).
A. L. Cherchiglia, G. De Conto, C. C. Nishi   +2 more
doaj   +1 more source

D0-D¯0$ \bar {D}^0 $ mixing and CPV measurements at the B-factories [PDF]

EPJ Web of Conferences, 2019
Measurements of D0-D¯0$ \bar {D}^0 $ mixing and CP violation in D0 decays are interesting as any difference with respect to the Standard Model prediction would be a signature of new physics. We report on recent searches and measurements of D0-D¯0$ \bar {D}
Chen Yeqi, Yan Wenbiao
doaj   +1 more source

Spontaneous CP violation and partially broken modular flavor symmetries

Journal of High Energy Physics
We study the realization of spontaneous CP violation through moduli stabilization. In modular flavor models, the source of CP violation is the vacuum expectation values of the complex structure moduli of toroidal compact space.
Tetsutaro Higaki, Tatsuo Kobayashi, Kaito Nasu, Hajime Otsuka   +3 more
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A natural model of spontaneous CP violation

Journal of High Energy Physics, 2022
We examine the possibility of building a natural non-supersymmetric model of spontaneous CP violation equipped with the Nelson-Barr (NB) mechanism to address the strong CP problem.
Sudhakantha Girmohanta, Seung J. Lee, Yuichiro Nakai, Motoo Suzuki   +3 more
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Spontaneous CP violation in supersymmetric QCD

Journal of High Energy Physics
We investigate a composite model of spontaneous CP violation based on a new supersymmetric QCD as a solution to the strong CP problem. The scalar components of the meson chiral superfields obtain complex vacuum expectation values to break CP symmetry ...
Shota Nakagawa, Yuichiro Nakai, Yaoduo Wang   +2 more
doaj   +1 more source

Double-mixing CP violation in B decays

European Physical Journal C: Particles and Fields
We study a long-overlooked CP violation observable, termed double-mixing CP violation, which arises from the interference between two neutral meson oscillating paths involved in a decay chain.
Wen-Jie Song, Yin-Fa Shen, Qin Qin
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Pseudo-Goldstone dark matter model with CP violation

Journal of High Energy Physics, 2022
We consider an explicitly CP-violating model with two Higgs doublets and one complex singlet scalar. The singlet S is charged under a global U(1) symmetry which is softly broken by a mass term μ 2 S 2 + H.c..
Neda Darvishi, Bohdan Grzadkowski
doaj   +1 more source

Lattice QCD spectroscopy for hadronic CP violation

Physics Letters B, 2017
The interpretation of nuclear electric dipole moment (EDM) experiments is clouded by large theoretical uncertainties associated with nonperturbative matrix elements.
Jordy de Vries, Emanuele Mereghetti, Chien-Yeah Seng, André Walker-Loud   +3 more
doaj   +1 more source