Results 41 to 50 of about 27,535 (267)

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

Nuclear 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, O.E. Solovjeva, O.A. Kochetkov, O.V. Teryaev   +3 more
doaj   +1 more source

Trace and Axial Anomalies on Equal Footing

Advances 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

European 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

Radiative decays of vector and pseudoscalar nonets

EPJ Web of Conferences, 2012
Using a counting scheme which treats the light pseudoscalar and the light vector-meson nonet on equal footing, the decays of the narrow light vector mesons into a pseudoscalar meson and a dilepton and of the η′ meson into an ɷ meson and a dielectron are ...
Lutz M.F.M., Leupold S., Terschlüsen C.
doaj   +1 more source

Hidden gauge formalism for the radiative decays of axial-vector mesons [PDF]

, 2008
The radiative decay of the axial-vector resonances into a pseudoscalar meson and a photon is studied using the vector meson Lagrangian obtained from the hidden gauge symmetry (HGS) formalism.
A. Hosaka, A. E. Kaloshin, A. E. Kaloshin, E. Oset, H. Nagahiro, J. Sakurai, L. Roca, M. C. Birse, Y. I. Azimov   +8 more
core   +3 more sources

QED effects in the pseudoscalar meson sector [PDF]

Journal of High Energy Physics, 2016
We present results on the pseudoscalar meson masses from a fully dynamical simulation of QCD+QED. We concentrate particularly on violations of isospin symmetry. We calculate the $ ^+$-$ ^0$ splitting and also look at other isospin violating mass differences. We have presented results for these isospin splittings in arXiv:1508.06401 [hep-lat]. In this
Horsley, R, Nakamura, Y, Perlt, H, Pleiter, D, Rakow, PEL, Schierholz, G, Schiller, A, Stokes, R, Stueben, H, Young, RD, Zanotti, JM, Collaboration, QCDSF, Collaboration, UKQCD   +12 more
openaire   +8 more sources

Heavy + light pseudoscalar meson semileptonic transitions

European Physical Journal C: Particles and Fields, 2021
A symmetry-preserving regularisation of a vector $$\times $$ × vector contact interaction (SCI) is used to deliver a unified treatment of semileptonic transitions involving $$\pi $$ π , K, $$D_{(s)}$$ D ( s ) , $$B_{(s,c)}$$ B ( s , c ) initial states ...
Zhen-Ni Xu, Zhu-Fang Cui, Craig D. Roberts, Chang Xu   +3 more
doaj   +1 more source

The Ds0(2590)+ as the dressed cs¯(21S0) meson in a coupled-channels calculation

Physics Letters B, 2022
The recent discovery of the Ds0(2590)+ meson by the LHCb Collaboration has stimulated the analysis of meson-meson channels effects in the two-body quark-antiquark meson spectrum.
Pablo G. Ortega, Jorge Segovia, David R. Entem, Francisco Fernández   +3 more
doaj   +1 more source

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., Draper, T., Horvath, I., Lee, F. X., Liu, K. F., Zhang, J. B.   +5 more
core   +3 more sources

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
openaire   +4 more sources