Results 31 to 40 of about 26,637 (219)

Meson exchange model for pseudoscalar meson-meson scattering [PDF]

open access: yesNuclear Physics A, 1990
A dynamical model for pseudoscalar-pseudoscalar meson scattering based on meson exchange, suitable for use in a variety of low- and intermediate-energy mesonic interactions, has been constructed and applied to ππ and kπ scattering with good quantitative results.
Lohse, Detlef   +3 more
openaire   +1 more source

Assignments of the X(4140), X(4500), X(4630), and X(4685) Based on the QCD Sum Rules

open access: yesAdvances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021
In this article, we take into account our previous calculations based on the QCD sum rules, and tentatively assign the X(4630) as the Ds∗D¯s1−Ds1D¯s∗ tetraquark molecular state or csPc¯s¯A+csAc¯s¯P tetraquark state with the JPC = 1−+, and assign the X(3915) and X(4500) as the 1S and 2S csAc¯s¯A tetraquark states, respectively, with the JPC = 0++. Then,
Zhi-Gang Wang, Ruilin Zhu
wiley   +1 more source

The light scalar mesons as tetraquarks

open access: yesPhysics Letters B, 2016
We present a numerical solution of the four-quark Bethe–Salpeter equation for ground-state scalar tetraquarks with JPC=0++. We find that the four-body equation dynamically generates pseudoscalar-meson poles in the Bethe–Salpeter amplitude.
Gernot Eichmann   +2 more
doaj   +1 more source

Charm meson scattering cross sections by pion and rho meson [PDF]

open access: yes, 2001
Using the local flavor SU(4) gauge invariance in the limit of vanishing vector meson masses, we extend our previous study of charm meson scattering cross sections by pion and rho meson, which is based only on the pseudoscalar-pseudoscalar-vector meson ...
Baier   +20 more
core   +2 more sources

Study of the Ground‐State Energies of Some Nuclei Using Hybrid Model

open access: yesAdvances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021
The quark‐quark (QQ) interaction as a perturbed term to the nucleon‐nucleon interaction (NN) without any coupling between them is studied in a hybrid model. This model is used to calculate the ground‐state energies of 2H1 and 4He2 nuclei. In a semirelativistic framework, this model is encouraged for light nuclei and the instanton‐induced interaction by
R. Hussien   +3 more
wiley   +1 more source

Magnetic polarizabilities of light mesons in SU(3) lattice gauge theory

open access: yesNuclear Physics B, 2015
We investigate the ground state energies of neutral pseudoscalar and vector meson in SU(3) lattice gauge theory in the strong abelian magnetic field.
E.V. Luschevskaya   +3 more
doaj   +1 more source

Trace and Axial Anomalies on Equal Footing

open access: yesAdvances in High Energy Physics, 2020
We discussed that for some particular nonsupersymmetric theories, a generalized symmetry that includes both the scale and axial transformations and leads to a single current may contain also a pseudoscalar term. The method, inspired by the superconformal
Renata Jora
doaj   +1 more source

The decays of $$\bar{B}^0$$ B¯0 , $$\bar{B}^0_s$$ B¯s0 and $$B^-$$ B- into $$\eta _c$$ ηc plus a scalar or vector meson

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We investigate the decays of $$\bar{B}^0_s$$ B¯s0 , $$\bar{B}^0$$ B¯0 and $$B^-$$ B- into $$\eta _c$$ ηc plus a scalar or vector meson in a theoretical framework by taking into account the dominant process for the weak decay of $$\bar{B}$$ B¯ meson into $
Ju-Jun Xie, Gang Li
doaj   +1 more source

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

Mixing of Pseudoscalar Mesons [PDF]

open access: yesPhysica Scripta, 2002
21 pages, 6 figures, Proc.
Feldmann, Th., Kroll, P.
openaire   +2 more sources

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