Results 71 to 80 of about 200,828 (293)

A Note on the Connection between Non-Additive Entropy and h-Derivative

open access: yesEntropy, 2023
In order to study as a whole a wide part of entropy measures, we introduce a two-parameter non-extensive entropic form with respect to the h-derivative, which generalizes the conventional Newton–Leibniz calculus.
Jin-Wen Kang   +2 more
doaj   +1 more source

Charged-Lepton Flavour Physics

open access: yes, 2012
This writeup of a talk at the 2011 Lepton-Photon symposium in Mumbai, India, summarises recent results in the charged-lepton flavour sector. I review searches for charged-lepton flavour violation, lepton electric dipole moments and flavour-conserving CP ...
A Czarnecki   +104 more
core   +1 more source

The Tau Lepton [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 1980
The author reviews the experimental knowledge of the properties of the tau lepton and the tau neutrino. The conventional theory of lepton properties and interactions is summarized; and that theory is compared with experiment. Future directions for research in tau and tau neutrino physics are described.
openaire   +3 more sources

Chiral Phase Transition in Linear Sigma Model with Nonextensive Statistical Mechanics

open access: yesAdvances 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   +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

open access: yesJournal 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   +3 more
doaj   +1 more source

Potential analysis of holographic Schwinger effect in the magnetized background

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We study the holographic Schwinger effect with magnetic field at RHIC and LHC energies by using the AdS/CFT correspondence. We consider both weak and strong magnetic field cases with $$B\ll T^2$$ B≪T2 and $$B\gg T^2$$ B≫T2 solutions respectively. Firstly,
Zhou-Run Zhu, De-fu Hou, Xun Chen
doaj   +1 more source

Leptonic Probes of the Standard Model [PDF]

open access: yes, 2002
Precise measurements of the lepton properties provide stringent tests of the Standard Model structure and accurate determinations of its parameters.
't Hooft   +84 more
core   +3 more sources

Heavy leptons, lepton mixing, and nonconservation of lepton-type number

open access: yesPhysics Letters B, 1977
Abstract Introducing a new weak doublet of heavy leptons, one is led to a mixing of the various lepton states with respect to the weak interaction and subsequently to the violation of electron and muon number conservation (e.g., the decay μ →e γ ). The new charged lepton can only decay via such a mixing and is therefore relatively long-lived ( τ >10
Harald Fritzsch, Harald Fritzsch
openaire   +2 more sources

Lepton-Flavor-Dependent Angular Analysis of B→K^{*}ℓ^{+}ℓ^{-}.

open access: yesPhysical Review Letters, 2017
We present a measurement of angular observables and a test of lepton flavor universality in the B→K^{*}ℓ^{+}ℓ^{-} decay, where ℓ is either e or μ.
S. Wehle   +204 more
semanticscholar   +1 more source

A4 lepton flavor model and modulus stabilization from S4 modular symmetry [PDF]

open access: yesPhysical Review D, 2019
We study the modulus stabilization in an ${A}_{4}$ model whose ${A}_{4}$ flavor symmetry is originated from the ${S}_{4}$ modular symmetry. We can stabilize the modulus so that the ${A}_{4}$ invariant superpotential leads to the realistic lepton masses ...
Tatsuo C. Kobayashi   +4 more
semanticscholar   +1 more source

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