333 research outputs found
Non-factorizable long distance contributions in color suppressed decays of B mesons
, , and decays are
studied. Their amplitude is given by a sum of factorized and non-factorizable
ones. The latter which is estimated by using a hard pion approximation is
rather small in color favored and decays but still
can efficiently interfere with the main amplitude given by the factorization.
In the color suppressed and decays, the
non-factorizable contribution is very important. The sum of the factorized and
non-factorizable amplitudes can reproduce well the existing experimental data
on the branching ratios for the color favored and
and the color suppressed and decays by
taking reasonable values of unknown parameters involved.Comment: 19 pages, Revte
A Geometric Picture For Fermion Masses
We describe a geometric picture for the pattern of fermion masses of the
three generations which is invariant with respect to the renormalization group
below the electroweak scale. Moreover, we predict the upper limit for the ratio
between the Dirac masses of the and neutrinos, .Comment: 7 pages LATEX + 1 figur
Quantitative corrections to mass sum rules involving baryons containing heavy quarks
Quantitative corrections are estimated to three of Franklin's sum rules
involving the masses of baryons containing at least one charmed quark and to
three analogous sum rules for baryons containing at least one bottom quark. The
corrections arise from three-body contributions to baryon interaction energies
and are calculated from a semiempirical formula for the colormagnetic
contributions to baryon masses.Comment: 4 pages, plainte
Bc spectroscopy in a quantum-chromodynamic potential model
We have investigated spectroscopy with the use of a
quantum-chromodynamic potential model which was recently used by us for the
light-heavy quarkonia. We give our predictions for the energy levels and the
1 transition widths. We also find, rather surprisingly, that although
is not a light-heavy system, the heavy quark effective theory with the
inclusion of the and corrections is as successful
for as it is for and .Comment: 10 page ReVTeX pape
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