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Chen, YH; Cleven, M; Daub, JT; Guo, FK; Hanhart, C; Kubis, B; Meissner, UG; Zou, BS; Chen, YH (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany.; Chen, YH (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany.
Effects of Z(b) states and bottom meson loops on Upsilon(4S) ->Upsilon(1S,2S)pi(+) pi(-) transitions
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractWe study the dipion transitions Upsilon(4S) -> Upsilon(nS)pi(+) pi(-)(n = 1,2)In particular, we consider the effects of the two intermediate bottomoniumlike exotic states Z(b)(10610) and Z(b)(10650) as well as bottom meson loops. The strong pion-pion final-state interactions, especially including channel coupling to KK in the S wave, are taken into account model independently by using dispersion theory. Based on a nonrelativistic effective field theory we find that the contribution from the bottom meson loops is comparable to those from the chiral contact terms and the Z(b)-exchange terms. For the Upsilon(4S) -> Upsilon(2S)pi(+)pi(-) decay, the result shows that including the effects of the Zb exchange and the bottom meson loops can naturally reproduce the two-hump behavior of the pp mass spectra. Future angular distribution data are decisive for the identification of different production mechanisms. For the Upsilon(4S) -> Upsilon(1S)pi(+)pi(-) decay, we show that there is a narrow dip around 1 GeV in the pi pi invariant mass distribution, caused by the final- state interactions. The distribution is clearly different from that in similar transitions from lower. states, and needs to be verified by future data with high statistics. Also we predict the decay width and the dikaon mass distribution of the Upsilon(4S) -> Upsilon(1S)Kappa(+)Kappa(-) process.
2017
Volume95Issue:3Pages:34022
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.95.034022
Funding OrganizationNatural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; NSFC [11621131001, 11647601] ; NSFC [11621131001, 11647601] ; NSFC [11621131001, 11647601] ; NSFC [11621131001, 11647601] ; DFG [TRR110] ; DFG [TRR110] ; DFG [TRR110] ; DFG [TRR110] ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS President's International Fellowship Initiative (PIFI) [2015VMA076] ; CAS President's International Fellowship Initiative (PIFI) [2015VMA076] ; CAS President's International Fellowship Initiative (PIFI) [2015VMA076] ; CAS President's International Fellowship Initiative (PIFI) [2015VMA076] ; Spanish Ministerio de Economia y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Maria de Maeztu) [MDM-2014-0369] ; Spanish Ministerio de Economia y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Maria de Maeztu) [MDM-2014-0369] ; Spanish Ministerio de Economia y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Maria de Maeztu) [MDM-2014-0369] ; Spanish Ministerio de Economia y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Maria de Maeztu) [MDM-2014-0369] ; European Fondo Europeo de Desarrollo Regional (FEDER) funds [FIS2014-54762-P] ; European Fondo Europeo de Desarrollo Regional (FEDER) funds [FIS2014-54762-P] ; European Fondo Europeo de Desarrollo Regional (FEDER) funds [FIS2014-54762-P] ; European Fondo Europeo de Desarrollo Regional (FEDER) funds [FIS2014-54762-P] ; Generalitat de Catalunya [2014SGR-401] ; Generalitat de Catalunya [2014SGR-401] ; Generalitat de Catalunya [2014SGR-401] ; Generalitat de Catalunya [2014SGR-401] ; Spanish Excellence Network on Hadronic Physics Grant [FIS2014-57026-REDT] ; Spanish Excellence Network on Hadronic Physics Grant [FIS2014-57026-REDT] ; Spanish Excellence Network on Hadronic Physics Grant [FIS2014-57026-REDT] ; Spanish Excellence Network on Hadronic Physics Grant [FIS2014-57026-REDT]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/22121
Collection理论物理所科研产出_SCI论文
Corresponding AuthorChen, YH (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany.; Chen, YH (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany.
Recommended Citation
GB/T 7714
Chen, YH,Cleven, M,Daub, JT,et al. Effects of Z(b) states and bottom meson loops on Upsilon(4S) ->Upsilon(1S,2S)pi(+) pi(-) transitions[J]. PHYSICAL REVIEW D,2017,95(3):34022.
APA Chen, YH.,Cleven, M.,Daub, JT.,Guo, FK.,Hanhart, C.,...&Chen, YH .(2017).Effects of Z(b) states and bottom meson loops on Upsilon(4S) ->Upsilon(1S,2S)pi(+) pi(-) transitions.PHYSICAL REVIEW D,95(3),34022.
MLA Chen, YH,et al."Effects of Z(b) states and bottom meson loops on Upsilon(4S) ->Upsilon(1S,2S)pi(+) pi(-) transitions".PHYSICAL REVIEW D 95.3(2017):34022.
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