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Measurements of the Upsilon(10860) and Upsilon(11020) resonances via sigma(e(+)e(-) -˃ Upsilon(nS)pi(+)pi(-))

Title
Measurements of the Upsilon(10860) and Upsilon(11020) resonances via sigma(e(+)e(-) -˃ Upsilon(nS)pi(+)pi(-))
Author
천병구
Keywords
CROSS-SECTION; ANNIHILATION; E(+)E(-); STATES; BBBAR
Issue Date
2016-01
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 93, NO 1, Page. 11101-11101
Abstract
We report new measurements of the total cross sections for e(+)e(-) -˃ Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) and e(+)e(-) -˃ b (b) over bar from a high-luminosity fine scan of the region root s = 10.63-11.05 GeV with the Belle detector. We observe that the Upsilon(nS)pi(+)pi(-) spectra have little or no nonresonant component and extract from them the masses and widths of Upsilon(10860) and Upsilon(11020) and their relative phase. We find M-10860 = (10891.1 +/- 3.2(-1.7)(+0.6)) MeV/c(2) and Gamma(10860) = (53.7(-5.6)(-5.4)(+7.1)(+1.3)) MeV and report first measurements M-11020 = (1098(-2.5)(-2.1)(+6.4)(+9.0)) MeV/c(2), Gamma(11020) = (61(-19)(-20)(+9)(+2)) MeV, and phi(11020) - phi 10860 = (-1.0 +/- 0.4(-0.1)(+1.4)) rad.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.011101http://hdl.handle.net/20.500.11754/30541
ISSN
1550-7998; 1550-2368
DOI
10.1103/PhysRevD.93.011101
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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