Results 51 to 60 of about 164,960 (270)

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

The decomposition of neutron-antineutron oscillation operators

Journal of High Energy Physics, 2023
We study the systematic decomposition of the dimension nine neutron-antineutron oscillation operators at tree and one-loop levels. We discuss the topologies’ generation and the assignment of the chiral quarks.
Shao-Long Chen, Yu-Qi Xiao
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   +2 more sources

A Renormalizable Neutrino Mass Model With (Z2 × Z4)⋊Z2(II) Symmetry

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
In this work, a renormalizable neutrino mass model based on (Z2 × Z4)⋊Z2 (II) symmetry is proposed for the modification of the μ − τ reflection symmetry. The hierarchies of lepton masses can be naturally realized, and the lepton mixing is addressed.
V. V. Vien, H. N. Long, T. D. Tham, Burak Bilki   +3 more
wiley   +1 more source

Test of lepton flavour violation at LHC

, 2006
We study lepton flavour violating decays of neutralinos and sleptons within the Minimal Supersymmetric Standard Model, assuming two and three generation mixings in the slepton sector.
A. Bartl, Agashe, Allanach, Arkani-Hamed, Bachacou, Chung, Collaboration, Collaboration, Collaboration, Dedes, Donoghue, Hinchliffe, Hisano, Hisano, K. Hidaka, K. Hohenwarter-Sodek, Krasnikov, Maltoni, T. Kernreiter, W. Majerotto, W. Porod   +20 more
core   +1 more source

Leptonic Probes of the Standard Model [PDF]

, 2002
Precise measurements of the lepton properties provide stringent tests of the Standard Model structure and accurate determinations of its parameters.
't Hooft, A. Pich, Alemany, Bahcall, Bahcall, Bijnens, Bijnens, Bijnens, Bijnens, Black, Blokland, Braaten, Braaten, Braaten, Braaten, Buchmiiller, Chen, Chetyrkin, Chetyrkin, Chetyrkin, Chetyrkin, Cirigliano, Cirigliano, Czarnecki, Czarnecki, Czarnecki, Davier, Davier, Davis, de Trocóniz, de Trocóniz, Ecker, Ecker, Ecker, Ecker, Fukugita, Gasser, Gasser, Gasser, Gell-Mann, Gomez-Dumm, Gonzalez-Garcia, Gonzalez-Garcia, Grünewald, Guerrero, Gupta, Hayakawa, Hayakawa, Hughes, Jamin, Jamin, Jamin, Jegerlehner, Kambor, Knecht, Knecht, Krause, Kukhto, Körner, Le Diberder, Le Diberder, Lubicz, Maltman, Maltman, Marciano, Narison, Narison, Narison, Pallante, Peris, Pich, Pich, Pich, Pich, Pich, Pich, Ramsey-Musolf, Rodrigo, Ruiz-Femenía, Stahl, Van Dyck, Weinberg, Witten, Wittig, Yanagida   +84 more
core   +3 more sources

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

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

Lepton flavor violation and local lepton number

Physical Review D
We investigate the predictions for lepton number violating processes within the minimal theory of neutrino masses based on the spontaneous breaking of local lepton number. In this framework, the symmetry is broken at the low scale, leading to the existence of a viable dark matter candidate.
Hridoy Debnath, Pavel Fileviez Pérez
openaire   +2 more sources

A Superalgebra Within: Representations of Lightest Standard Model Particles Form a Z25$\mathbb {Z}_2^5$‐Graded Algebra

Annalen der Physik, Volume 537, Issue 12, December 2025.
 A set of particle representations, familiar from the Standard Model, collectively form a superalgebra. Those representations mirroring the behaviour of the Standard Model's gauge bosons, and three generations of fermions, are each included in this algebra, with exception only to those representations involving the top quark.
N. Furey
wiley   +1 more source