Results 1 to 10 of about 278,794 (392)

Vector-meson production and vector meson dominance [PDF]

European Physical Journal C: Particles and Fields, 2021
We consider the fidelity of the vector meson dominance (VMD) assumption as an instrument for relating the electromagnetic vector-meson production reaction $$e + p \rightarrow e^\prime + V + p$$ e + p → e ′ + V + p to the purely hadronic process $$V + p ...
Y.-Z. Xu, S.-Y. Chen, Z.-Q. Yao, D. Binosi, Z.-F. Cui, C. D. Roberts   +5 more
doaj   +7 more sources

Charmed scalar resonances -- Conventional and four-quark mesons [PDF]

Prog.Theor.Phys. 114 (2005) 205-211, 2005
We propose that there coexist two scalar mesons of different structures (a conventional meson and a four-quark meson) in the recently observed broad bumps just below the large peak of the tensor meson in the D-pi mass distribution. We base this proposal on the interpretation of the charm-strange scalar meson of mass 2317 MeV as a four-quark meson.
McKellar, Bruce H J, Terasaki, K.
arxiv   +3 more sources

Meson scattering in a non-minimally Lorentz-violating scalar QED at finite temperature [PDF]

European Physical Journal C: Particles and Fields
In this paper we study meson scattering in a non-minimally Lorentz-violating scalar QED at finite temperature. The meson scatterings were investigated in tree level and the finite temperature effects were addressed by using the thermofield dynamics ...
M. C. Araújo, R. V. Maluf, J. Furtado
doaj   +2 more sources

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

Nucl.Phys. A689 (2001) 965-979, 2000
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 couplings, to include also contributions from the couplings among three vector mesons and among four ...
Baier, Belyaev, Bratkovskaya, Brown, C.M. Ko, Colangelo, Haglin, Haglin, Kapusta, Ko, Li, Lin, Lin, Lin, Lin, Matinyan, Peters, Shuryak, T.G. Di, Tsushima, Ziwei Lin   +20 more
arxiv   +4 more sources

Meson-nucleus potentials and the search for meson-nucleus bound states [PDF]

, 2017
Recent experiments studying the meson-nucleus interaction to extract meson-nucleus potentials are reviewed. The real part of the potentials quantifies whether the interaction is attractive or repulsive while the imaginary part describes the meson absorption in nuclei. The review is focused on mesons which are sufficiently long-lived to potentially form
V. Metag, M. Nanova, E. Paryev
arxiv   +3 more sources

Interactions of heavy-light mesons [PDF]

Nucl.Phys.Proc.Suppl.83:200-202,2000, 1999
The potential between static-light mesons forming a meson-meson or a meson-antimeson system is calculated in quenched and unquenched SU(3) gauge theory. We use the Sheikholeslami-Wohlert action and statistical estimators of light quark propagators with maximal variance reduction.
Green, AM, Michael, C, Pennanen, P, UKQCD Collaboration   +3 more
arxiv   +4 more sources

Omega photoproduction [PDF]

, 2002
Photoproduction of omega-meson is analyzed within meson exchange model and Regge model and compared to rho-meson photoproduction. An interplay between two models and uncertainties in data reproduction are discussed.
Krewald, S., Sibirtsev, A., Tsushima, K.
arxiv   +4 more sources

Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model [PDF]

, 2011
We reanalyze the decay constants of s-wave and p-wave mesons and D, B ->M form factors, where M represents a pseudoscalar meson, a vector meson, a scalar meson, or an axial vector meson within a covariant light-front quark model. The parameter \beta for wave-functions of most of s-wave mesons and of a few axial-vector mesons are fixed with latest ...
Abada A, Abe K Belle Collaboration, Amsler C, Asner D Heavy Flavor Averaging Group, Aubert B, Ball P, Bernard C, Bjorken J D, Bjorken J D, Close F E, Feldmann T, Flynn J M, Hwang C W, Nakamura K, R C Verma, Rosner J L Stone S, Suzuki M   +16 more
arxiv   +3 more sources

Analytical determination of Yukawa Potential: An iterative semiclassical approach [PDF]

Revista Brasileira de Ensino de Física, 2020
In this work we propose an alternative semiclassical iterative approach to obtain the Yukawa Potential, where the temporal evolution is replaced by the number of iterations.
Breno Rodrigues Segatto
doaj   +2 more sources

B- and D-meson leptonic decay constants from four-flavor lattice QCD [PDF]

Physical Review D, 2018
We calculate the leptonic decay constants of heavy-light pseudoscalar mesons with charm and bottom quarks in lattice quantum chromodynamics on four-flavor QCD gauge-field configurations with dynamical $u$, $d$, $s$, and $c$ quarks. We analyze over twenty
Fermilab Lattice and Milc Collaborations
semanticscholar   +2 more sources