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Confirming the molecular nature of the Z(b)(10610) and the Z(b)(10650)
Cleven, M; Wang, Q; Guo, FK; Hanhart, C; Meissner, UG; Zhao, Q;赵强
2013
发表期刊PHYSICAL REVIEW D
卷号87期号:7页码:74006
摘要The decays of the Z(b)(10610) and the Z(b)(10650) to Upsilon(nS)pi, h(b)(mP)pi and chi(bJ)(mP)gamma (n = 1, 2, 3, m = 1, 2 and J = 0, 1, 2) are investigated within a nonrelativistic effective field theory. It is argued that, while the decays to Upsilon(nS)pi suffer from potentially large higher order corrections, the P-wave transitions of the Zb states are dominated by a single one-loop diagram and therefore offer the best possibility to confirm the nature of the Z(b) states as molecular states and to further study their properties. We give nontrivial and parameter-free predictions for the ratios of various partial widths of the Z(b) and Z(b)' into final states with h(b)(mP)pi and chi(bJ)(mP)gamma. While such relations appear naturally in the molecular picture for the mentioned transitions, they are not expected to hold for any other scenario. In addition, the branching fractions for the neutral Z(b) states to chi(bJ)gamma are predicted to be of order 10(-4)-10(-3). This provides a fine test of the molecular nature in future high-luminosity experiments. DOI: 10.1103/PhysRevD.87.074006
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.87.074006
收录类别SCI
WOS记录号WOS:000317396000002
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被引频次:50[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224580
专题理论物理室
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Cleven, M,Wang, Q,Guo, FK,et al. Confirming the molecular nature of the Z(b)(10610) and the Z(b)(10650)[J]. PHYSICAL REVIEW D,2013,87(7):74006.
APA Cleven, M,Wang, Q,Guo, FK,Hanhart, C,Meissner, UG,&Zhao, Q;赵强.(2013).Confirming the molecular nature of the Z(b)(10610) and the Z(b)(10650).PHYSICAL REVIEW D,87(7),74006.
MLA Cleven, M,et al."Confirming the molecular nature of the Z(b)(10610) and the Z(b)(10650)".PHYSICAL REVIEW D 87.7(2013):74006.
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