Sergiy Dubynskiy

Isospin breaking in the yield of heavy meson pairs in e{sup +}e{sup -} annihilation near threshold

We revisit the problem of interplay between the strong and the Coulomb interaction in the charged-to-neutral yield ratio for

Pionic transitions from X(3872) to {chi}{sub cJ}

B {\bar B}

Diresonance in production and scattering of heavy mesons

and

Amplitude of the decay Υ(3S)→Υ(1S)ππ

D {\bar D}

e+e−→γX(3872)near theD*D¯*threshold

pairs near their respective thresholds in

Amplitude of the decay Upsilon(3S)-->Upsilon(1S)pipi

e^+e^-

Amplitude of the decay ?(3S)??(1S)pp

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

e+e--->gammaX(3872) near the D*D* threshold

K {\bar K}

e{sup +}e{sup -}{yields}{gamma}X(3872) near the D*D* threshold

production at the

e{sup +}e⁻γX(3872) near the D*D* threshold

\phi(1020)