Results 61 to 70 of about 172,277 (268)

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

Entropy, 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, Ke-Ming Shen, Ben-Wei Zhang   +2 more
doaj   +1 more source

Experimental Review on Lepton Universality and Lepton Flavour Violation tests in B decays [PDF]

EPJ Web of Conferences, 2020
Tests of lepton flavour universality in B decays offer an excellent opportunity to test the Standard Model, and show hints of new physics in analyses performed by the LHCb, Belle and BaBar experiments.
de Simone P.
doaj   +1 more source

Large lepton asymmetry from Q-balls

, 2002
We propose a scenario which can explain large lepton asymmetry and small baryon asymmetry simultaneously. Large lepton asymmetry is generated through Affleck-Dine (AD) mechanism and almost all the produced lepton numbers are absorbed into Q-balls (L ...
A. Anisimov, A. Balbi, A. Casas, A. Cohen, A. de Gouvêa, A. Kusenko, A.D. Dolgov, A.D. Linde, A.D. Linde, A.E. Lange, A.E. Nelson, A.H. Jaffe, C. Pryke, C.B. Netterfield, Fuminobu Takahashi, G. Dvali, H.A. Weldon, H.S. Kang, I. Affleck, J. Liu, J. March-Russell, J. McDonald, J.A. Harvey, J.A. Harvey, K. Enqvist, K. Enqvist, K. Enqvist, K.A. Olive, K.N. Abazajian, M. Kawasaki, M. Laine, M. Tegmark, Masahide Yamaguchi, N. Terasawa, P. de Bernardis, R. Banerjee, R. Foot, S. Davidson, S. Hanany, S. Kasuya, S. Kasuya, S. Kasuya, S.H. Hansen, S.Y. Khlebnikov, T. Moroi, V.A. Kuzmin, X. Shi, Y.Y.Y. Wong   +47 more
core   +1 more source

The Tau Lepton [PDF]

Annual 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

Tau Decays in Pythia 8 [PDF]

Nuclear Physics B (Proc. Suppl.) 253-255 (2014) 77-80, 2012
As of version 8.150 of Pythia, the isotropic decay model of tau-leptons has been replaced with sophisticated tau-lepton decay machinery. The decays and spin correlations for tau-leptons in Pythia 8 are described, including the spin correlation algorithm, the available tau-lepton production processes, the tau-lepton decay models, the user interface, and
arxiv   +1 more source

Preserving the Lepton Asymmetry in the Brane World [PDF]

, 2002
In models where the Standard Model spectrum is localized on a brane embedded in a higher dimensional spacetime, we discuss the lepton number violation induced by the emission of right-handed neutrinos from the brane.
't Hooft, Ahmad, Ambrosio, Antoniadis, Antoniadis, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arnold, Arnold, Campbell, Campbell, Campbell, Campbell, Carena, Chacko, Chung, Cline, Cline, Cline, Cline, Cohen, Creminelli, Davoudiasl, De Gouvea, Demir, Dienes, Durmuş A. Demir, Dvali, Dvali, Faraggi, Fukuda, Fukuda, Fukugita, Fukugita, Gherghetta, Gherghetta, Giddings, Grossman, Gubser, Hall, Harvey, Hebecker, Hebecker, Ioannisian, Kajantie, Kaloper, Kanti, Keith A. Olive, Kiritsis, Kuzmin, Lukas, Luty, Lykken, Mohapatra, Olive, Olive, Pilaftsis, Randall, Randall, Sakharov, Starkman, Tony Gherghetta, Witten   +66 more
core   +3 more sources

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

Physics 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

B s(d) − B ¯ $$ \overline{B} $$ s(d) mixing and B s → μ + μ − decay in the NMSSM with the Flavour Expansion Theorem

Journal of High Energy Physics, 2019
In this paper, motivated by the observation that the Standard Model predictions are now above the experimental data for the mass difference ΔM s(d), we perform a detailed study of B s(d) − B ¯ $$ \overline{B} $$ s(d) mixing and B s → μ + μ − decay in the
Quan-Yi Hu, Xin-Qiang Li, Ya-Dong Yang, Min-Di Zheng   +3 more
doaj   +1 more source

Potential analysis of holographic Schwinger effect in the magnetized background

European 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

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

Astronomische Nachrichten, EarlyView.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge, Elena Bratkovskaya, Taesoo Song, Laura Sagunski   +3 more
wiley   +1 more source