Results 81 to 90 of about 62,043 (279)
Poincaré-covariant quark model of electroweak light mesons decays [PDF]
EPJ Web of Conferences, 2019 The procedure for obtaining the radiative decay constants of pseudoscalar and vector unflavored mesons in point–form of Poincaré-invariant quantum mechanics is presented.
Andreev Viktor, Haurysh Vadzim
doaj +1 more source
Pseudoscalar—sterile neutrino interactions: reconciling the cosmos with neutrino oscillations [PDF]
, 2016 The Short BaseLine (SBL) neutrino oscillation anomalies hint at the presence of a sterile neutrino with a mass of around 1 eV. However, such a neutrino is incompatible with cosmological data, in particular observations of the Cosmic Microwave Background (
M. Archidiacono +6 more
semanticscholar +1 more source
Nonminimally coupled pseudoscalar inflaton [PDF]
Physical Review D, 2018 We consider a scenario in which the inflaton $ $ is a pseudoscalar field non-minimally coupled to gravity through a term of the form ${\cal X} R ^2$. The pseudoscalar is also coupled to a $U(1)$ gauge field (or an ensemble of ${\cal N}$ gauge fields) through an axial coupling of the form $ F \tilde{F}$. After M. M. Anber and L. Sorbo, Phys. Rev.
Beltrán Almeida, Juan P. +1 more
openaire +2 more sources
A case for resonant X‐ray Bragg diffraction by a collinear antiferromagnet Li2Ni3P4O14
Acta Crystallographica Section B, EarlyView.Amplitudes for resonant X‐ray diffraction by collinear antiferromagnet Li2Ni3P4O14 that include permitted Dirac multipoles, e.g. anapoles, are investigated. Chiral signatures for the rotation of X‐ray helicity are described.Magnetic axial and polar (Dirac) nickel multipoles contribute to resonant X‐ray Bragg amplitudes in a symmetry‐informed analysis ...
Stephen W. Lovesey
wiley +1 more source
Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium
Advances in High Energy Physics, 2017 We study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of ...
Hluf Negash, Shashank Bhatnagar
doaj +1 more source
, 2009 We present a simple supersymmetric model where the dominant decay mode of the lightest Higgs boson is h->2eta->4c where eta is a light pseudoscalar and c is the charm quark. For such decays the Higgs mass can be smaller than 100 GeV without conflict with
Bellazzini, Brando +3 more
core +2 more sources
PSEUDOSCALAR MESONS IN NUCLEAR MEDIUM [PDF]
Nuclear Many-Body and Medium Effects in Nuclear Interactions and Reactions, 2003 Invited talk at the Workshop "MEDIUM02", Kyushu, Oct.25 - 26 ...
openaire +2 more sources
Precision of a data-driven estimate of hadronic light-by-light scattering in the muon $g-2$: Pseudoscalar-pole contribution [PDF]
, 2016 The evaluation of the numerically dominant pseudoscalar-pole contribution to hadronic light-by-light scattering in the muon g-2 involves the pseudoscalar-photon transition form factor F_{P gamma^* gamma^*}(-Q_1^2, -Q_2^2) with P = pi^0, eta, eta^\prime ...
A. Nyffeler
semanticscholar +1 more source
, 1991 In the large quark mass limit, an argument which identifies the mass of the heavy-light pseudoscalar or scalar bound state with the renormalized mass of the heavy quark is given.
Testa, Massimo
core +2 more sources
Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect
Advanced Physics Research, Volume 4, Issue 7, July 2025.This review investigates the connection between chiral anomalies and their manifestation in topological materials, using both perturbative methods based on ordinary quantum field theory and conformal field theory (CFT). It emphasizes the role of CFT in momentum space for parity‐odd correlation functions, and their reconstruction by the inclusion of a ...
Claudio Corianò +4 more
wiley +1 more source