Di-electron Widths of the {upsilon}(1S, 2S, 3S) Resonances

Journal Article · Tue Jul 11 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2220241· OSTI ID:20873281

Pivarski, J ^[1]

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1. Cornell University, Ithaca, New York 14853 (United States)

We determine the di-electron widths of the {upsilon}(1S), {upsilon}(2S), and {upsilon}(3S) resonances with better than 2% precision by integrating the cross-section of e+e- {yields} {upsilon} over the e+e- center-of-mass energy. Using e+e- energy scans of the {upsilon} resonances at the Cornell Electron Storage Ring and measuring {upsilon} production with the CLEO detector, we find di-electron widths of 1.252 {+-} 0.004 ({sigma}stat) {+-} 0.019 ({sigma}syst) keV, 0.581 {+-} 0.004 {+-} 0.009 keV, and 0.413 {+-} 0.004 {+-} 0.006 keV for the {upsilon}(1S), {upsilon}(2S), and {upsilon}(3S), respectively.

• OSTI ID: 20873281
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 842; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CESR STORAGE RING
CROSS SECTIONS
ELECTRON-ELECTRON INTERACTIONS
ELECTRONS
KEV RANGE
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE WIDTHS
RESONANCE PARTICLES
UPSILON-10023 MESONS
UPSILON-10355 MESONS
UPSILON-10580 MESONS
UPSILON-9460 MESONS