Z b(10610) and Z b(10650) decays to bottomonium plus pion

Xin Li; M. B. Voloshin

doi:10.1103/PhysRevD.86.077502

Z _b(10610) and Z _b(10650) decays to bottomonium plus pion

Xin Li
, M. B. Voloshin

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

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.

Original language	English (US)
Article number	077502
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	86
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.86.077502
State	Published - Oct 1 2012

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10.1103/PhysRevD.86.077502

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abstract = "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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AU - Voloshin, M. B.

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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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JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

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IS - 7

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ER -

Z _b(10610) and Z _b(10650) decays to bottomonium plus pion

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