Results 31 to 40 of about 50,138 (237)

Strange and Charm Quark Spins from Anomalous Ward Identity [PDF]

open access: yes, 2017
We present a calculation of the strange and charm quark contributions to the nucleon spin from the anomalous Ward identity (AWI). It is performed with overlap valence quarks on 2+1-flavor domain-wall fermion gauge configurations on a $24^3 \times 64 ...
Andrei Alexandru   +6 more
core   +3 more sources

Pseudoscalar pole terms contributions to hadronic light-by-light corrections to the muonium hyperfine splitting [PDF]

open access: yes, 2002
The contribution of pseudoscalar pole diagrams to the hadronic light-by-light corrections of order alpha^3 E_F to the ground state hyperfine splitting in hydrogenic atom is calculated in the pseudoscalar pole terms approximation.
A.P Martynenko   +34 more
core   +2 more sources

Pseudoscalar vertex and quark masses [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2000
LATTICE99 (Improvement and Renormalization), 3 p., 3 ...
Jean-RenĂ© Cudell   +2 more
openaire   +3 more sources

The Schwinger Nonet Mass and Sakurai Mass-Mixing Angle Formulae Reexamined [PDF]

open access: yes, 1998
We study the origins of the inaccuracies of Schwinger's nonet mass, and the Sakurai mass-mixing angle, formulae for the pseudoscalar meson nonet, and suggest new versions of them, modified by the inclusion of the pseudoscalar decay constants.
Dashen   +11 more
core   +3 more sources

Generation of Pseudoscalar Bosons by Stimulated Raman Scattering of Light in Dielectric Media

open access: yesEPJ Web of Conferences, 2015
The conditions of pseudoscalar excitations of liquids and crystals vibration states in spontaneous and stimulated Raman spectra revealing are reported.
Gorelik V.S.
doaj   +1 more source

The light pseudoscalar Higgs boson in NMSSM [PDF]

open access: yes, 2006
We study the associated production of a very light pseudoscalar Higgs boson with a pair of charginos. The novel signature involves a pair of charged leptons from chargino decays and a pair of photons from the pseudoscalar Higgs boson decay, plus large ...
Arhrib, Abdesslam   +3 more
core   +3 more sources

Probing the light pseudoscalar window [PDF]

open access: yesPhysical Review D, 2003
22 pages, 4 ...
Christopher D. Carone   +2 more
openaire   +2 more sources

Chiral Properties of Pseudoscalar Mesons on a Quenched $20^4$ Lattice with Overlap Fermions [PDF]

open access: yes, 2001
The chiral properties of the pseudoscalar mesons are studied numerically on a quenched $20^4$ lattice with the overlap fermion. We elucidate the role of the zero modes in the meson propagators, particularly that of the pseudoscalar meson.
Dong, S. J.   +5 more
core   +3 more sources

SCALAR AND PSEUDOSCALAR GLUEBALLS [PDF]

open access: yesInternational Journal of Modern Physics A, 2009
We employ two simple and robust results to constrain the mixing matrix of the isosinglet scalar mesons f0(1710), f0(1500), f0(1370): one is the approximate SU (3) symmetry empirically observed in the scalar sector above 1 GeV and confirmed by lattice QCD, and the other is the scalar glueball mass at 1710 MeV in the quenched approximation. In the SU (3)
openaire   +3 more sources

Collider constraints on light pseudoscalars [PDF]

open access: yesJournal of High Energy Physics, 2018
Abstract We investigate the bounds on light pseudoscalars that arise from a variety of collider searches. Special attention is thereby devoted to the mass regions [3, 5] GeV and [9, 11] GeV, in which a meaningful theoretical description has to include estimates of non-perturbative effects such as the mixing of the pseudoscalar with
Michael Spira   +5 more
openaire   +4 more sources

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