Results 131 to 140 of about 27,828 (268)

η′ Meson as a pseudoscalar gluonium

Physics Letters B, 1979
Abstract QCD sum rules induced by the current G μν a Ḡ μν a constructed from gluon field operators are derived. Saturating the sum rules by η′ rough estimates for the η′ mass and its residue are found. The difference between the η′ and typical quark states such as ϱ is noted.
V.A. Novikov, M.A. Shifman, A.I. Vainshtein, V.I. Zakharov   +3 more
openaire   +1 more source

Variational Analysis of Mass Spectra and Decay Constants for Ground State Pseudoscalar and Vector Mesons in Light-Front Quark Model

, 2015
Using the variational principle, we compute mass spectra and decay constants of ground state pseudoscalar and vector mesons in the light-front quark model (LFQM) with the QCD-motivated effective Hamiltonian including the hyperfine interaction.
Choi, Ho-Meoyng, Ji, Chueng-Ryong, Li, Ziyue, Ryu, Hui-Young   +3 more
core   +1 more source

Update on the Light-Front Quark Model and Mass Spectrum Calculations for Ground State Pseudoscalar and Vector Mesons [PDF]

, 2012
Ho-Meoyng Choi, Chueng‐Ryong Ji, Ziyue Li   +2 more
openalex   +1 more source

Chiral Symmetry restoration from the hadronic regime

EPJ Web of Conferences, 2017
We discuss recent advances on QCD chiral symmetry restoration at finite temperature, within the theoretical framework of Effective Theories. U(3) Ward Identities are derived between pseudoscalar susceptibilities and quark condensates, allowing to explain
Gómez Nicola Angel, Cortés Santiago, Morales John, Ruiz de Elvira Jacobo, Andrés Ricardo Torres   +4 more
doaj   +1 more source

Tensor mesons produced in tau lepton decays

, 2011
Light tensor mesons (T = a_2, f_2 and K_2^*) can be produced in decays of tau leptons. In this paper we compute the branching ratios of tau --> T pi nu decays by assuming the dominance of intermediate virtual states to model the form factors involved in ...
A. Lusiani, C. S. Kim, G. López Castro, H. Hatanaka, J. H. Muñoz   +4 more
core   +1 more source

Light pseudoscalar mesons in a nonlocalSU(3)chiral quark model [PDF]

, 2004
Alberto F. Scarpettini, D. Gómez Dumm, N. N. Scoccola   +2 more
openalex   +1 more source

Quarkonia and heavy-light mesons in a covariant quark model

EPJ Web of Conferences, 2016
Preliminary calculations using the Covariant Spectator Theory (CST) employed a scalar linear confining interaction and an additional constant vector potential to compute the mesonic mass spectra.
Leitão Sofia, Stadler Alfred, Peña M. T., Biernat Elmar P.   +3 more
doaj   +1 more source

Holographic QCD and the muon anomalous magnetic moment. [PDF]

Eur Phys J C Part Fields, 2021
Leutgeb J, Mager J, Rebhan A.
europepmc   +1 more source

Effective Lagrangian approach to vector mesons, their structure and decays$^{*)}$

, 1996
An improved update of the structure and decays of $\rho^0$, $\omega$ and $\phi$ mesons based on a chiral SU(3) Lagrangian, including anomaly terms is presented.
A Cordier, BW Lee, C Iykson, CD Froggatt, Doliky, F. Klingl, HB O’Conell, J Basdevant, J Gasser, J We, JJ Sakurai, K Karabayashi, LM Barkov, LM Barkov, M Bao, M Ge-Mann, M Hrmann, M Lutz, N. Kaiser, NM Kroll, P J Schechter, P Jain, P Ö Kaymakcalan, PM Ivanov, RI Dzhelyadin, SR Amendolia, SR Amendolia, T Hsuda, U-G Meissner, W Mzon, W Pauli, W. Weise   +31 more
core   +1 more source

Highlights of light meson spectroscopy at the BESIII experiment. [PDF]

Natl Sci Rev, 2021
Jin S, Shen X.
europepmc   +1 more source