Energy Scan of the e(+)e(-) -˃ h(b)(nP)pi(+)pi(-) (n=1, 2) Cross Sections and Evidence for gamma(11020) Decays into Charged Bottomoniumlike States
- Title
- Energy Scan of the e(+)e(-) -˃ h(b)(nP)pi(+)pi(-) (n=1, 2) Cross Sections and Evidence for gamma(11020) Decays into Charged Bottomoniumlike States
- Author
- 천병구
- Keywords
- ANNIHILATION
- Issue Date
- 2016-09
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 117, NO. 14, Page. 142001-142001
- Abstract
- Using data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we measure the energy dependence of the e(+)e(-) -˃ h(b)(nP)pi(+)pi(-) (n = 1, 2) cross sections from thresholds up to 11.02 GeV. We find clear gamma(10860) and gamma(11020) peaks with little or no continuum contribution. We study the resonant substructure of the gamma(11020) -˃ h(b)(nP)pi(+)pi(_) transitions and find evidence that they proceed entirely via the intermediate isovector states Z(b)(10610) and Z(b)(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z(b)(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z(b)(10650) is produced is not excluded at a significant level.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.142001https://repository.hanyang.ac.kr/handle/20.500.11754/76754
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.117.142001
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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