Measurement of double charmonium production in e{sup +}e{sup -} annihilations at {radical}(s)=10.6 GeV

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.031101· OSTI ID:20711181

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A; Pappagallo, M; Pompili, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I ^[5]

---

1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway); and others

We study e{sup +}e{sup -}{yields}J/{psi} cc by measuring the invariant mass distribution recoiling against fully reconstructed J/{psi} decays, using 124 fb{sup -1} of data collected at a center-of-mass energy of 10.6 GeV with the BABAR detector. We observe signals for {eta}{sub c}(1S), {chi}{sub c0}, and {eta}{sub c}(2S) in the recoil mass distribution, thus confirming previous measurements. We measure {sigma}(e{sup +}e{sup -}{yields}J/{psi}+cc)B(cc{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 cc={eta}{sub c}(1S), {chi}{sub c0}, and {eta}{sub c}(2S), respectively.

• OSTI ID: 20711181
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
CHI0-3415 MESONS
ELECTRON-POSITRON INTERACTIONS
ETA C-2980 MESONS
ETA C-3590 MESONS
GEV RANGE
J PSI-3097 MESONS
MASS DISTRIBUTION
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PEP STORAGE RINGS
REST MASS
TOTAL CROSS SECTIONS