Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-02-19
Phys.Rev.C60:035209,1999
Physics
Nuclear Physics
Nuclear Theory
17 pages, Revtex, 8 eps figures, and several eps diagrams in equations
Scientific paper
10.1103/PhysRevC.60.035209
We introduce coupled channels of Bethe-Salpeter mesons both in the boundstate equation for mesons and in the mass gap equation for chiral symmetry. Consistency is insured by the Ward Identities for axial currents, which preserve the Goldstone boson nature of the pion and prevents a systematic shift of the hadron spectrum. We study the decay of a scalar meson coupled to a pair of pseudoscalars. We also show that coupled channels reduce the breaking of chiral symmetry, with the same Feynman diagrams that appear in the coupling of a scalar meson to a pair of pseudoscalar mesons. Exact calculations are performed in a particular confining quark model, where we find that the groundstate $I=0, ^3P_0 q \bar q$ meson is the f_0(980) with a partial decay width of 40MeV. We also find a 30% reduction of the chiral condensate due to coupled channels.
No associations
LandOfFree
A new Perspective on the Scalar meson Puzzle, from Spontaneous Chiral Symmetry Breaking Beyond BCS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new Perspective on the Scalar meson Puzzle, from Spontaneous Chiral Symmetry Breaking Beyond BCS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new Perspective on the Scalar meson Puzzle, from Spontaneous Chiral Symmetry Breaking Beyond BCS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-407670