Mesons asq¯−qbound states from Euclidean two-point correlators in the Bethe-Salpeter approach
نویسندگان
چکیده
منابع مشابه
Excited mesons in a Bethe-Salpeter approach
In theoretical hadron physics mesons are a center of attention. Constructed in a simpler way than baryons in the quark model, they still present a considerable challenge if one aims at an understanding of all their aspects in terms of quarks and gluons in the context of Quantum Chromodynamics, the quantum field theory of the strong interaction. Complementary to (constituent-) quark models, redu...
متن کاملBc mesons in a Bethe-Salpeter model
We apply our Bethe-Salpeter model for mesons to the Bc family with parameters fixed in our previous investigation. We evaluate the mass of the pseudo-scalar Bc meson as 6.356 GeV/c2 and 6.380 GeV/c2 and the lifetime as 0.47 ps and 0.46 ps respectively in two reductions of the Bethe-Salpeter Equation, in good agreement with the recently reported mass of 6.40 ± 0.39 (stat.) ± 0.13 (syst.) GeV/c2 ...
متن کاملA Bethe–Salpeter Description of Light Mesons
We present a covariant approach to describe the low–lying scalar, pseudoscalar, vector and axialvector mesons as quark–antiquark bound states. This approach is based on an effective interaction modeling of the non–perturbative structure of the gluon propagator that enters the quark Schwinger–Dyson and meson Bethe–Salpeter equations. We extract the meson masses and compute the pion and kaon deca...
متن کاملRecent Developments in the Bethe-Salpeter Description of Light Mesons
Results for the light meson mass spectrum from a Bethe-Salpeter approach are presented. The results obtained in the standard framework are Poincaré covariant and compare favourably with lattice results. Using a more sophisticated scheme, the pseudoscalar, vector and 1++ (a1/ f1) axialvector charge eigenstate masses are unaltered whereas the 1+− (b1/h1) axialvector meson mass is raised. The Beth...
متن کاملU A ( 1 ) Symmetry Breaking and η , η ′ mesons in the Bethe – Salpeter Approach
U A (1) symmetry breaking is studied by introducing the flavor mixing interaction proposed by Kobayashi, Maskawa and 't Hooft. Combining the one gluon exchange interaction , the rainbow like Schwinger–Dyson equation and the ladder like Bethe–Salpeter equation are derived. The anomalous PCAC relation in the framework of this approximation is considered. The masses of the pseudoscalar mesons π, η...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 1999
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.59.986