Results 41 to 50 of about 521,380 (323)
CP-odd Weak Basis Invariants for Neutrino Mass Matrices with a Texture Zero and a Vanishing Minor
, 2010 We construct the $CP$-odd weak basis invariants in the flavor basis for all the phenomenologically viable neutrino mass matrices with a texture zero and a vanishing minor and, also, find the necessary and sufficient conditions for $CP$ invariance .
Branco G C +7 more
core +1 more source
Freeze-in axion-like dark matter
Physics Letters B, 2019 We present an interesting Higgs portal model where an axion-like particle (ALP) couples to the Standard Model sector only via the Higgs field. The ALP becomes stable due to CP invariance and turns out to be a natural candidate for freeze-in dark matter ...
Sang Hui Im, Kwang Sik Jeong
doaj +1 more source
On the modular invariance of mass eigenstates and CP violation [PDF]
, 2001 We investigate the modular transformation properties of observable (light) fields in heterotic orbifolds, in the light of recent calculations of CP-violating quantities.
Dent, Thomas
core +2 more sources
Unitarity triangle from CP invariant quantities
Physics Letters B, 2006 We construct the CKM unitarity triangle from CP invariant quantities, using the coupling constant of weak decays with flavor change from b to u, and the particle - antiparticle mixing probability in the B_s and B_d systems. Also included are new measurements of the coupling V_us in Kaon decays.
Kleinknecht, Konrad, Renk, Burkhard
openaire +2 more sources
A MODEL-INDEPENDENT AND REPHASE-INVARIANT PARAMETRIZATION OF CP VIOLATION [PDF]
International Journal of Modern Physics A, 1999 The phenomenological description of the neutral B meson system is proposed in terms of the fundamental CP-violating observables and within a rephasing invariant formalism. This generic formalism can select the time-dependent and time-integrated asymmetries which provide the basic tools to discriminate the different kinds of possible CP-violating ...
Cocolicchio D, Viggiano M
openaire +4 more sources
Non-invertible symmetry as an axion-less solution to the strong CP problem
Physics Letters BWe use a non-invertible symmetry to construct a three-zero texture for the down-type quark mass matrix, which can resolve the strong CP problem without invoking the axion, in four-dimensional spacetime with three quark families in QCD.
Qiuyue Liang, Tsutomu T. Yanagida
doaj +1 more source
Infrared subtleties and chiral vertices at NLO: an implicit regularization analysis
European Physical Journal C: Particles and Fields, 2023 We employ implicit regularization (IReg) in quark-antiquark decays of the Z, or of a scalar (CP-even or odd) boson at NLO, and compare with dimensional schemes to reveal subtleties involving infrared divergence cancellation and $$\gamma _5$$ γ 5 -matrix ...
Ricardo J. C. Rosado +3 more
doaj +1 more source
Symmetries of Two Higgs Doublet Model and CP violation
, 2004 We use the invariance of physical picture under a change of Lagrangian, the reparametrization invariance in the space of Lagrangians and its particular case -- the rephrasing invariance, for analysis of the two-Higgs-doublet extension of the SM. We found
G. ’t Hooft +8 more
core +2 more sources
Advanced Engineering Materials, EarlyView.Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan +8 more
wiley +1 more source
Journal of High Energy Physics, 2021 We study the sources of CP violation for baryogenesis models with quasi-degenerate neutrinos. Our approach is to use the renormalized propagator in a quantum field theory model of neutrino oscillations, paying close attention to unitarity requirements ...
J. Racker
doaj +1 more source