TY - JOUR
T1 - Z b(10610) and Z b(10650) decays to bottomonium plus pion
AU - Li, Xin
AU - Voloshin, M. B.
PY - 2012/10/1
Y1 - 2012/10/1
N2 - We consider the transitions from the Z b(10610) and Z b(10650) resonances to the states of bottomonium with emission of a pion. The Z b resonances are viewed as "molecular" objects of a large spatial size made of heavy B mesons, while the states of bottomonium are considered to be compact, so that an application of the leading (dipole) term in the QCD multipole expansion is assumed to be justified. In this way we calculate the ratios of the decay rates to the final states Υ(nS)π with n=1, 2, 3, and the ratio of the decay rates to h b(kP)π with k=1 and 2. We find our estimates in reasonable agreement with recent experimental data.
AB - We consider the transitions from the Z b(10610) and Z b(10650) resonances to the states of bottomonium with emission of a pion. The Z b resonances are viewed as "molecular" objects of a large spatial size made of heavy B mesons, while the states of bottomonium are considered to be compact, so that an application of the leading (dipole) term in the QCD multipole expansion is assumed to be justified. In this way we calculate the ratios of the decay rates to the final states Υ(nS)π with n=1, 2, 3, and the ratio of the decay rates to h b(kP)π with k=1 and 2. We find our estimates in reasonable agreement with recent experimental data.
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U2 - 10.1103/PhysRevD.86.077502
DO - 10.1103/PhysRevD.86.077502
M3 - Article
AN - SCOPUS:84867036565
SN - 1550-7998
VL - 86
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 7
M1 - 077502
ER -