Results 51 to 60 of about 172,277 (268)

CP Violations in Lepton Number Violation Processes and Neutrino Oscillations [PDF]

, 2000
We examine the constraints on the MNS lepton mixing matrix from the present and future experimental data of the neutrino oscillation and lepton number violation processes. We introduce a graphical representation of the CP violation phases which appear in
A.I. Abazov, G. Gratta, G.L. Fogli, H. Nishiura, H. Nishiura, H. Nishiura, J.N. Abdurashitov, K. Matsuda, K.S. Hirata, M. Apollonio, M. Apollonio, M. Doi, M. Doi, M. Doi, M. Doi, N. Hata, N. Hata, N. Takeda, P. Anselmann, P. Anselmann, S.M. Bilenky, T. Fukuyama, T. Fukuyama, T. Fukuyama, W.C. Haxton   +24 more
core   +3 more sources

$${b\rightarrow c\tau \nu }$$ b→cτν transitions in the standard model effective field theory

European Physical Journal C: Particles and Fields, 2019
The $$R(D^{(*)})$$ R(D(∗)) anomalies observed in $$B\rightarrow D^{(*)}\tau \nu $$ B→D(∗)τν decays have attracted much attention in recent years. In this paper, we study the $$B\rightarrow D^{(*)}\tau \nu $$ B→D(∗)τν , $$\Lambda _b\rightarrow \Lambda _c ...
Quan-Yi Hu, Xin-Qiang Li, Ya-Dong Yang
doaj   +1 more source

CP asymmetry in the angular distribution of τ → KS πν τ decays

Journal of High Energy Physics, 2020
In this work, we study the C P asymmetry in the angular distribution of τ → K S πν τ decays, taking into account the known C P violation in K 0 − K ¯ 0 $$ {K}^0-{\overline{K}}^0 $$ mixing. It is pointed out for the first time that, once the well-measured
Feng-Zhi Chen, Xin-Qiang Li, Ya-Dong Yang   +2 more
doaj   +1 more source

Testing minimal lepton flavor violation with extra vector-like leptons at the LHC [PDF]

, 2010
Models of minimal lepton flavor violation where the seesaw scale is higher than the relevant flavor scale predict that all lepton flavor violation is proportional to the charged lepton Yukawa matrix. If extra vector-like leptons are within the reach of the LHC, it will be possible to test the resulting predictions in ATLAS/CMS.
arxiv   +1 more source

Lepton number and lepton flavor violations in seesaw models [PDF]

Mod.Phys.Lett. A17 (2002) 2467, 2002
We discuss the impact of fermion mass matrices on some lepton number violating processes, namely baryogenesis via leptogenesis and neutrinoless double beta decay, and on some lepton flavor violating processes, namely radiative lepton decays in supersymmetric seesaw models.
arxiv   +1 more source

Softly broken lepton numbers and maximal neutrino mixing [PDF]

, 2001
We consider lepton mixing in an extension of the Standard Model with three right-handed neutrino singlets. We require that the three lepton numbers L_e, L_\mu, and L_\tau be separately conserved in the Yukawa couplings, and we assume that they are softly
Grimus, W., Lavoura, L.
core   +2 more sources

Systematic Approach to Gauge-Invariant Relations between Lepton Flavor Violating Processes

, 2004
We analyze four-lepton contact interactions that lead to lepton flavor violating processes, with violation of individual family lepton number but total lepton number conserved.
Aguilar, Akers, Alejandro Ibarra, Armbruster, Bellgardt, Berezhiani, Berezhiani, Bergmann, Bergmann, Bilenkii, Bliss, Buchmuller, Cheng, Davidson, De Rujula, Eduard Massó, Eidelman, Formaggio, Gonzalez-Garcia, Javier Redondo, Johnson, Kabachenko, Lee, Lee, Marciano, Raidal, Weinberg, Willmann   +27 more
core   +1 more source

Chiral Phase Transition in Linear Sigma Model with Nonextensive Statistical Mechanics

Advances in High Energy Physics, 2017
From the nonextensive statistical mechanics, we investigate the chiral phase transition at finite temperature T and baryon chemical potential μB in the framework of the linear sigma model.
Ke-Ming Shen, Hui Zhang, De-Fu Hou, Ben-Wei Zhang, En-Ke Wang   +4 more
doaj   +1 more source

RD*,RK* $$ {R}_{D^{\left(*\right)}},{R}_{K^{\left(*\right)}} $$ and neutrino mass in the 2HDM-III with right-handed neutrinos

Journal of High Energy Physics, 2018
Given that the two-Higgs-doublet model of type III (2HDM-III) has the potential to address the RD* $$ {R}_{D^{\left(*\right)}} $$ anomalies while the resolution to the RK* $$ {R}_{K^{\left(*\right)}} $$ deficits requires new degrees of freedom within ...
Shao-Ping Li, Xin-Qiang Li, Ya-Dong Yang, Xin Zhang   +3 more
doaj   +1 more source

New physics in the angular distribution of B c − $$ {B}_c^{-} $$ → J/ψ(→ μ + μ − )τ − (→ π − ν τ ) ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ decay

Journal of High Energy Physics, 2021
In B c − $$ {B}_c^{-} $$ → J/ψ(→ μ + μ − )τ − ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ decay, the three-momentum p τ − $$ {\boldsymbol{p}}_{\tau^{-}} $$ cannot be determined accurately due to the decay products of τ − inevitably include an undetected ν τ ...
Quan-Yi Hu, Xin-Qiang Li, Xiao-Long Mu, Ya-Dong Yang, Dong-Hui Zheng   +4 more
doaj   +1 more source