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Search for the 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays

Title
Search for the 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays
Author
천병구
Keywords
IDENTIFICATION
Issue Date
2017-01
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 95, no. 1, Article no. 012001
Abstract
We report the first search for the J(PC) = 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays with data samples of (102 +/- 2) x 10(6) and (158 +/- 4) x 10(6) events, respectively, collected with the Belle detector. No significant signals are observed in any of the proposed production modes, and the 90% credibility level upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with chi(c1) are measured to be B(Upsilon(1S) -> chi(c1) + anything) = (1.90 +/- 0.43(stat) +/- 0.14(syst) x 10(-4) with an improved precision over prior measurements and B Upsilon(2S) -> chi(c1) + anything) = (2.24 +/- 0.44(stat) +/- 0.20(syst) x 10(-4) for the first time.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.012001https://repository.hanyang.ac.kr/handle/20.500.11754/112097
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.95.012001
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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