Results 21 to 30 of about 172,277 (268)

Phototransmutation of leptons [PDF]

Physical Review D, 2000
By photo-transmutation of leptons we mean photon-lepton reactions of the following type: $ l_ \longrightarrow l_ $ with $l_ \neq l_ $, occurring as a consequence of the lepton mass matrix changing its orientation (rotating) under changing scales. In this paper, we first discuss these reactions in general terms, then proceed to the calculation of
Bordes Villagrasa, José M., Chan, Hong-Mo, Faridani, Jacqueline, Tsou, Sheung Tsun   +3 more
openaire   +3 more sources

Leptonic decays of the tau lepton [PDF]

EPJ Web of Conferences, 2019
In these proceedings we review the SM prediction for the tau leptonic decays, including the radiative $ (\tau \to \ell \lambda \nu \bar \nu ) $ and the five-body $ (\tau \to \ell \ell '\ell '\nu \bar \nu ) $ decay modes, which are among the most powerful tools to study precisely the structure of the weak interaction and to constrain possible ...
openaire   +3 more sources

Jet tomography in high-energy nuclear collisions [PDF]

EPJ Web of Conferences, 2019
When an energetic parton traversing the QCD medium, it may suffer multiple scatterings and lose energy. This jet quenching phenomenon may lead to the suppression of leading hadron productions as well as medium modifications of full jet observables in ...
Zhang Ben-Wei, Ma Guo-Yang, Dai Wei, Wang Sa, Zhang Shan-Liang   +4 more
doaj   +1 more source

Charm and leptons [PDF]

Nuclear Physics A, 2003
The present knowledge on charm and leptons is reviewed including the topics discussed at this conference and the progress made since the last Quark Matter conference. Special emphasis is placed on Jpsi production at the SPS which is one of the highlights in the field.
openaire   +5 more sources

The $$\varvec{\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-}$$ Λ b → Λ ( → p π - ) μ + μ - decay in the aligned two-Higgs-doublet model

European Physical Journal C: Particles and Fields, 2017
The rare baryonic decay $$\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-$$ Λ b → Λ ( → p π - ) μ + μ - provides valuable complementary information compared to the corresponding mesonic $$b\rightarrow s\mu ^+\mu ^-$$ b → s μ + μ ...
Quan-Yi Hu, Xin-Qiang Li, Ya-Dong Yang
doaj   +1 more source

New model for radiatively generated Dirac neutrino masses and lepton flavor violating decays of the Higgs boson [PDF]

, 2019
We propose a new mechanism to explain neutrino masses with lepton number conservation, in which the Dirac neutrino masses are generated at the two-loop level involving a dark matter candidate.
Enomoto, Kazuki, Kanemura, Shinya, Sakurai, Kodai, Sugiyama, Hiroaki   +3 more
core   +3 more sources

Freeze-in Dirac neutrinogenesis: thermal leptonic CP asymmetry

European Physical Journal C: Particles and Fields, 2020
We present a freeze-in realization of the Dirac neutrinogenesis in which the decaying particle that generates the lepton-number asymmetry is in thermal equilibrium.
Shao-Ping Li, Xin-Qiang Li, Xin-Shuai Yan, Ya-Dong Yang   +3 more
doaj   +1 more source

Radiative lepton decays and the substructure of leptons [PDF]

Proceedings of International Europhysics Conference on High Energy Physics — PoS(hep2001), 2001
5 pages, to appear in the proceedings of the International Europhysics Conference on High Energy Physics, July 12-18 2001 ...
openaire   +3 more sources

B c − → J / ψ → μ + μ − τ − → π − ν τ ρ − ν τ ℓ − ν ¯ ℓ ν τ ν ¯ τ $$ {B}_c^{-}\to J/\psi \left(\to {\mu}^{+}{\mu}^{-}\right){\tau}^{-}\left(\to {\pi}^{-}{\nu}_{\tau },{\rho}^{-}{\nu}_{\tau },{\ell}^{-}{\overline{\nu}}_{\ell }{\nu}_{\tau}\right){\overline{\nu}}_{\tau } $$ decays with visible final-state kinematics

Journal of High Energy Physics, 2023
The semitauonic B c − → J / ψ τ − ν ¯ τ $$ {B}_c^{-}\to J/\psi {\tau}^{-}{\overline{\nu}}_{\tau } $$ decay provides an ideal and clean mode to scrutinize possible new physics effects in b → c τ − ν ¯ τ $$ b\to c{\tau}^{-}{\overline{\nu}}_{\tau ...
Xin-Qiang Li, Xin Xu, Ya-Dong Yang, Dong-Hui Zheng   +3 more
doaj   +1 more source

Power-aligned 2HDM: a correlative perspective on (g − 2) e,μ

Journal of High Energy Physics, 2021
With the hypothesis of minimal flavor violation, we find that there exists a power-aligned relation between the Yukawa couplings of the two scalar doublets in the two-Higgs-doublet model with Hermitian Yukawa matrices.
Shao-Ping Li, Xin-Qiang Li, Yuan-Yuan Li, Ya-Dong Yang, Xin Zhang   +4 more
doaj   +1 more source