113 research outputs found
On the mass splitting between axial and vector heavy-light mesons
Mass splitting between axial and vector mesons is considered
within the standard QCD sum rules. In agreement with the first experimental
data on the meson () we find that the splitting for B is
about the same as for D and show that corrections to the meson masses
are small.Comment: 5 pages, Latex, 6 figures in one uuencoded compressed postsript file
(replacing corrupt file originally submitted
The Goldberger -- Treiman Relation, and at
The Goldberger-Treiman relation is shown to persist in the chiral limit at
finite temperatures to order . The dependence of turns out to
be the same as for , , while is temperature independent to this order. The baryon octet and
couplings also behave as if only pions are massless in the
pseudoscalar meson octet.Comment: 7p, NSF-ITP-93-145, BUTP-93/27, PUTP-1433, November 199
Next-to-leading-order temperature corrections to correlators in QCD
Corrections of order to vector and axial current correlators in QCD at
a finite temperature are obtained using dispersion relations for the
amplitudes of deep inelastic scattering on pions. Their relation with the
operator product expansion is presented. An interpretation of the results in
terms of -dependent meson masses is given: masses of and start
to move with temperature in order .Comment: 13 pages, no figures, CERN-TH.7215/94, BUTP-94/
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