Results 21 to 30 of about 148,572 (261)
CPT and CP, an entangled couple
Journal of High Energy Physics, 2020 Even though it is undoubtedly very appealing to interpret the latest T2K results as evidence of CP violation, this claim assumes CPT conservation in the neutrino sector to an extent that has not been tested yet.
Gabriela Barenboim +2 more
doaj +1 more source
Fingerprinting CP-violating New Physics with B → Kμ + μ −
Journal of High Energy Physics, 2023 The B → Kℓ + ℓ − system is particularly interesting to explore physics beyond the Standard Model. Such effects could provide new sources of CP violation, thereby giving rise to Wilson coefficients which could not only be real, as assumed in most analyses,
Robert Fleischer +3 more
doaj +1 more source
CP violation at the finite temperature
Physics Letters B, 2019 In this letter we explore the CP violation at the finite temperature. We show that a spontaneous CP-violating phase φ may arise at the temperature of the electroweak phase transition, and φ can provide a source term for generating the matter-antimatter ...
Wei Chao
doaj +1 more source
CP Violation with Heavy Hadrons [PDF]
, 1996 I review several topics involving CP violation with heavy hadrons. In particular, I discuss (i) Hyperons: CP violation in the decay $\Lambda^0 \to p \pi^-$, (ii) Charm: indirect CP violation in the D^0 system, both within and beyond the SM, and (iii ...
Abbott +43 more
core +2 more sources
Testing the presence of CP violation in the 2HDM [PDF]
, 2015 We review CP properties of the Two-Higgs-Doublet model. In particular, we show that spontaneous CP violation occurs in the parameter space on the border between regions allowing explicit CP violation and those where there is another minimum, deeper than ...
Grzadkowski, B. +2 more
core +2 more sources
A U-spin anomaly in charm CP violation
Journal of High Energy Physics, 2023 Recent LHCb data shows that the direct CP asymmetries of the decay modes D 0 → π + π − and D 0 → K + K − have the same sign, violating an improved U-spin limit sum rule in an unexpected way at 2.1σ.
Stefan Schacht
doaj +1 more source
New physics in CP violation experiments [PDF]
, 2001 CP violation plays a privileged role in our quest for new physics beyond the electroweak standard model (SM). In the SM the violation of CP in the weak interactions has a single source: the phase of the quark mixing matrix (the CKM matrix, for Cabibbo ...
Masiero, A., Vives, O.
core +3 more sources
CP violation in η muonic decays
Journal of High Energy Physics, 2019 In this study, we investigate the imprints of CP violation in certain η muonic decays that could arise within the Standard Model effective field theory.
Pablo Sanchez-Puertas
doaj +1 more source
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 +3 more
doaj +1 more source
On distinguishing the direct and spontaneous CP violation in 2HDM
, 2009 The most general Two Higgs Doublet Model (2HDM) allows both for the explicit and the spontaneous CP violation in the scalar sector. Here we discuss CP violation in terms of basis-independent quantities and show how using two different sets of known CP ...
Kanishev, K. A. +2 more
core +1 more source