dc.contributor.author | Besson, David Zeke | |
dc.date.accessioned | 2007-04-13T20:09:00Z | |
dc.date.available | 2007-04-13T20:09:00Z | |
dc.date.issued | 2006-03 | |
dc.identifier.citation | Adam, N,; Alexander, JP, et al. Observation of psi(3770)->pi pi J/psi and measurement of Gamma(ee)[psi(2S)]. PHYSICAL REVIEW LETTERS. March 2006. 96(8) | |
dc.identifier.uri | http://hdl.handle.net/1808/1424 | |
dc.description.abstract | We observe signals for the decays psi(3770)-> XJ/psi from data acquired with the CLEO detector operating at the CESR e(+)e(-) collider with root s=3773 MeV. We measure the following branching fractions B(psi(3770)-> XJ/psi) and significances: (189 +/- 20 +/- 20)x10(-5) (11.6 sigma) for X=pi(+)pi(-), (80 +/- 25 +/- 16)x10(-5) (3.4 sigma) for X=pi(0)pi(0), and (87 +/- 33 +/- 22)x10(-5) (3.5 sigma) for X=eta, where the errors are statistical and systematic, respectively. The radiative return process e(+)e(-)->gamma psi(2S) populates the same event sample and is used to measure Gamma(ee)[psi(2S)]=(2.54 +/- 0.03 +/- 0.11) keV. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.relation.isversionof | http://publish.aps.org/ | |
dc.title | Observation of psi(3770)->pi pi J/psi and measurement of Gamma(ee)[psi(2S)] | |
dc.type | Article | |
dc.rights.accessrights | openAccess | |