Amplitude analysis of e(+)e(-) -˃ Upsilon(nS)pi(+)pi(-) at root s=10.866 GeV

Title
Amplitude analysis of e(+)e(-) -˃ Upsilon(nS)pi(+)pi(-) at root s=10.866 GeV
Authors
천병구
Keywords
RADIATIVE-CORRECTIONS
Issue Date
2015-04
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 91, NO 7, Page. 72003-72003
Abstract
We report results on studies of the e(+)e(-) annihilation into three-body Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) final states including measurements of cross sections and the full amplitude analysis. The cross sections measured at root s = 10.866 GeV and corrected for the initial state radiation are sigma(e(+)e(-) --˃ Upsilon(1S)pi(+)pi(-)) = (2.27 +/- 0.12 +/- 0.14) pb, sigma(e(+)e(-) --˃ Upsilon(2S)pi(+)pi(-)) = (4.07 +/- 0.16 +/- 0.45) pb, and sigma(e(+)e(-) --˃ Upsilon(3S)pi(+)pi(-)) = (1.46 +/- 0.09 +/- 0.16) pb. Amplitude analysis of the three-body Upsilon(nS)pi(+)pi(-) final states strongly favors I-G(J(P)) = 1(+)(1(+)) quantum-number assignments for the two bottomonium-like Z(b)(+/-) states, recently observed in the Upsilon(nS)pi(+) and h(b)(mP)pi(+)(m = 1, 2) decay channels. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
URI
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.072003http://hdl.handle.net/20.500.11754/23966
ISSN
2470-0029; 2470-0010
DOI
http://dx.doi.org/10.1103/PhysRevD.91.072003
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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