Results 41 to 50 of about 49,673 (241)
SCALAR AND PSEUDOSCALAR GLUEBALLS [PDF]
International 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
Strange and Charm Quark Spins from Anomalous Ward Identity [PDF]
, 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
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Chiral Properties of Pseudoscalar Mesons on a Quenched $20^4$ Lattice with Overlap Fermions [PDF]
, 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
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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
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Photon propagation in magnetic and electric fields with scalar/pseudoscalar couplings: a new look [PDF]
, 2006 We consider the minimal coupling of two photons to neutral scalar and pseudoscalar fields, as for instance in the case of the Higgs boson and axion, respectively. In this framework, we analyze the photon dispersion relations in the presence of static and
A. Minguzzi +13 more
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Decay of charmonium states into a scalar and a pseudoscalar glueball
EPJ Web of Conferences, 2016 In the framework of a chiral symmetric model, we expand a U(4)R × U(4)L symmetric linear sigma model with (axial-)vector mesons by including a dilaton field, a scalar glueball, and the pseudoscalar glueball.
Eshraim Walaa I.
doaj +1 more source
The light pseudoscalar Higgs boson in NMSSM [PDF]
, 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
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On the mixing of pseudoscalar mesons
Physics Letters B, 1983 Abstract We calculate the mixing between a glueball and qq pseudoscalars (both the ground state and the first radial excitation) in the framework of the MIT bag model. Our results are large, strongly violate SU(3) and are very sensitive to small changes in the parameters of the model.
Donoghue, John, Gomm, Harald
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The $$\pi f_0(500)$$ π f 0 ( 500 ) decay of the $$a_1(1260)$$ a 1 ( 1260 )
European Physical Journal C: Particles and Fields, 2021 We evaluate the $$a_1(1260) \rightarrow \pi \sigma (f_0(500))$$ a 1 ( 1260 ) → π σ ( f 0 ( 500 ) ) decay width from the perspective that the $$a_1(1260)$$ a 1 ( 1260 ) resonance is dynamically generated from the pseudoscalar–vector interaction and the $$\
R. Molina +3 more
doaj +1 more source
Supersymmetric 3-3-1 model with right-handed neutrinos
, 2004 We consider the supersymmetric extension of the 3-3-1 model with right-handed neutrinos. We study the mass spectra in the scalar and pseudoscalar sectors, and for a given set of the input parameters, we find that the lightest scalar in the model has a ...
J. C. Montero +4 more
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