Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-04-03
Phys.Rev.D75:113001,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 2 figures
Scientific paper
10.1103/PhysRevD.75.113001
We revisit the problem of interplay between the strong and the Coulomb interaction in the charged-to-neutral yield ratio for $B {\bar B}$ and $D {\bar D}$ pairs near their respective thresholds in $e^+e^-$ annihilation. We consider here a realistic situation with a resonant interaction in the isospin I=0 channel and a nonresonant strong scattering amplitude in the I=1 state. We find that the yield ratio has a smooth behavior depending on the scattering phase in the I=1 channel. The same approach is also applicable to the $K {\bar K}$ production at the $\phi(1020)$ resonance, where the Coulomb effect in the charged-to-neutral yield ratio is generally sensitive to the scattering phases in both the isoscalar and the isovector channels. Furthermore, we apply the same approach to the treatment of the effect of the isotopic mass difference between the charged and neutral mesons and argue that the strong-scattering effects generally result in a modification to the pure kinematical effect of this mass difference.
Dubynskiy S.
Oliver L. L.
Raynal Jean-Claude
Voloshin Mikhail B.
Yaouanc Alain Le
No associations
LandOfFree
Isospin breaking in the yield of heavy meson pairs in e+e- annihilation near threshold 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 Isospin breaking in the yield of heavy meson pairs in e+e- annihilation near threshold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isospin breaking in the yield of heavy meson pairs in e+e- annihilation near threshold will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-255491