Thumbnail Image
Publication

Charmonium decays of Y(4260), psi(4160), and psi(4040)

Besson, David Zeke
Citations
Altmetric:
Abstract
Using data collected with the CLEO detector operating at the CESR e(+)e(-) collider at root s = 3.97-4.26 GeV, we investigate 15 charmonium decay modes of the psi(4040), psi(4160), and Y(4260) resonances. We confirm, at 11 sigma significance, the BABAR Y(4260)->pi(+)pi(-)J/psi discovery, make the first observation of Y(4260)->pi(0)pi(0)J/psi (5.1 sigma), and find the first evidence for Y(4260)-> K(+)K(-)J/psi (3.7 sigma). We measure e(+)e(-) cross sections at root s=4.26 GeV as sigma(pi(+)pi(-)J/psi)=58(-10)(+12)+/- 4 pb, sigma(pi(0)pi(0)J/psi)=23(-8)(+12)+/- 1 pb, and sigma(K(+)K(-)J/psi)=9(-5)(+9)+/- 1 pb, in which the uncertainties are statistical and systematic, respectively. Upper limits are placed on other decay rates from all three resonances.
Description
Date
2006-04
Journal Title
Journal ISSN
Volume Title
Publisher
AMERICAN PHYSICAL SOC
Collections
Physics & Astronomy Scholarly Works
Center for Russian, East European, and Eurasian Studies Scholarly Publications
Show all metadata
Files
Thumbnail Image
GetPDFServlet3.pdf
Adobe PDF, 256.56 KB
Research Projects
Organizational Units
Journal Issue
Keywords
Citation
Coan, TE, Gao, YS, et al. Charmonium decays of Y(4260), psi(4160), and psi(4040). PHYSICAL REVIEW LETTERS. April 2006. 96(16)
URI
https://hdl.handle.net/1808/1409
DOI
Embedded videos