Measurement of Double Charmonium Production in$e^+e^-$ Annihilations at $$\sqrt{s}=10.6$$ GeV

Conference · Wed Jun 29 00:00:00 EDT 2005

OSTI ID:881147

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A; Grauges, E; Palano, A; Pappagallo, M; Pompili, A; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S; Eigen, G; Ofte, I

The authors study e{sup +}e{sup -} {yields} J/{psi} c{bar c} by measuring the invariant mass distribution recoiling against fully reconstructed J/{psi} decays, using 124.4 fb{sup -1} of data collected with a center-of-mass energy of 10.6 GeV with the BABAR detector. They observe signals for {eta}{sub c}(1S), {chi}{sub c0}, and {eta}{sub c}(2S) in the recoil mass distribution, thus confirming previous measurements. The authors measure {sigma}(e{sup +}e{sup -} {yields} J/{psi} + c{bar c}){Beta}(c{bar c} {yields} > 2 charged) to be 17.6 {+-} 2.8(stat){sub -2.1}{sup +1.5}(syst) fb, 10.3 {+-} 2.5(stat){sub -1.8}{sup +1.4}(syst) fb, and 16.4 {+-} 3.7(stat){sub -3.0}{sup +2.4}(syst) fb with c{bar c} = {eta}{sub c}(1S), {chi}{sub c0}, and {eta}{sub c}(2S), respectively.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 881147
• Report Number(s): SLAC-PUB-11287; hep-ex/0506062; TRN: US0603069
• Resource Relation: Conference: Contributed
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARMONIUM
MASS DISTRIBUTION
PRODUCTION
Experiment-HEP
HEPEX