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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 +3 more
core +3 more sources

FCC-ee: The Lepton Collider

The European Physical Journal Special Topics, 2019
In response to the 2013 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) study was launched, as an international collaboration hosted by CERN. This study covers a highest-luminosity high-energy lepton collider (FCC-
A. Abada +499 more
semanticscholar +1 more source

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

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

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. +3 more
openaire +3 more sources

Search for medium response to jet quenching via hadron chemistry around the quenched jets [PDF]

EPJ Web of Conferences
We present a unique signal of medium response to jet quenching: the enhancement of baryon-to-meson ratios for associated particles at intermediate transverse momentum around the triggered quenched jets.
Luo Ao +4 more
doaj +1 more source

Review of lepton universality tests in B decays [PDF]

Journal of Physics G: Nuclear and Particle Physics, 2018
Several measurements of tree- and loop-level b-hadron decays performed in the recent years hint at a possible violation of Lepton Universality. This article presents an experimental and theoretical overview of the current status of the field.
S. Bifani +3 more
semanticscholar +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 +4 more sources

Lepton Number Violation: Seesaw Models and Their Collider Tests [PDF]

Frontiers of Physics, 2017
The Majorana nature of neutrinos is strongly motivated from the theoretical and phenomenological point of view. A plethora of neutrino mass models, known collectively as Seesaw models, exist that could generate both a viable neutrino mass spectrum and ...
Yi-Fu Cai, T. Han, Tong Li, R. Ruiz
semanticscholar +1 more source

Two paths towards precision at a very high energy lepton collider [PDF]

Journal of High Energy Physics, 2020
We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at high energy ...
D. Buttazzo, R. Franceschini, A. Wulzer
semanticscholar +1 more source

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high energy physics - phenomenology hep-ph

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high energy physics - experiment hep-ex