Results 121 to 130 of about 27,828 (268)

Electromagnetic transitions in an effective chiral Lagrangian with the eta-prime and light vector mesons

open access: yes, 2012
We consider the chiral Lagrangian with a nonet of Goldstone bosons and a nonet of light vector mesons. The mixing between the pseudoscalar mesons eta and eta-prime is taken into account. A novel counting scheme is suggested that is based on hadrogenesis,
A. Gasparyan   +60 more
core   +1 more source

Branching fractions of semileptonic D and $$D_s$$ D s decays from the covariant light-front quark model

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
Based on the predictions of the relevant form factors from the covariant light-front quark model, we show the branching fractions for the $$D (D_s) \rightarrow (P,\,S,\,V,\,A)\,\ell \nu _\ell $$ D ( D s ) → ( P , S , V , A ) ℓ ν ℓ ( $$\ell =e$$ ℓ = e or $
Hai-Yang Cheng, Xian-Wei Kang
doaj   +1 more source

Composition of the pseudoscalar η and η′ mesons [PDF]

open access: yesJournal of High Energy Physics, 2007
The composition of the eta and eta' mesons has long been a source of discussion and is of current interest with new experimental results appearing. We investigate what can be learnt from a number of different processes: V to P gamma and P to V gamma (V and P are light vector and pseudoscalar mesons respectively), P to gamma gamma, J/psi,psi' to P gamma,
openaire   +2 more sources

Pseudoscalar Mesons Scattering off D*-mesons with Chiral Perturbation Theory

open access: yesEPJ Web of Conferences, 2012
We have systematically calculated the s-wave pseudoscalar mesons and D*- mesons scattering lengths to the third order with chiral perturbation theory, which will be helpful to reveal their strong interaction.
Zhu Shi-Lin   +3 more
doaj   +1 more source

Bilocal Field Approach and Semileptonic Heavy Meson Decays

open access: yes, 1992
In this paper we consider the bilocal field approach for $QCD$. We obtain a bilocal effective meson action with a potential kernel given in relativistic covariant form.
Kalinovsky, Yu. L., Kaschluhn, L.
core   +2 more sources

Study of the production mechanism of the eta meson by means of analysing power measurements

open access: yes, 2006
Information about the production mechanism of the eta meson in proton-proton collisions can be inferred by confronting the experimental studies on the analysing power for the p(pol)p --> pp eta reaction with the theoretical predictions of this observable.
A. Budzanowski   +31 more
core   +1 more source

Chiral Perturbation Theory and U(3)_L\times U(3)_R Chiral Theory of Mesons

open access: yes, 1998
We examine low energy limit of $U(3)_L\times U(3)_R$ chiral theory of mesons through integrating out fields of vector and axial-vector mesons. The effective lagrangian for pseudoscalar mesons at $O(p^4)$ has been obtained, and five low energy coupling ...
Ecker G   +4 more
core   +1 more source

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