Study of double charmonium production in e{sup +}e{sup -} annihilation at {radical}(s){approx_equal}10.6 GeV

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.071102· OSTI ID:20705301

Abe, K; Gershon, T; Haba, J; Hastings, N C; Hazumi, M; Higuchi, T; Ishikawa, A; Itoh, R; Iwasaki, H; Iwasaki, Y; Katayama, N; Koppenburg, P; Nakao, M; Nishida, S; Nozaki, T; Ozaki, H; Sagawa, H; Sakai, Y; Stamen, R; Takasaki, F ^[1]

---

1. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); and others

We present a new analysis of double charmonium production in e{sup +}e{sup -} annihilation. The observation of the processes e{sup +}e{sup -}{yields}J/{psi}{eta}{sub c}, J/{psi}{chi}{sub c0}, and J/{psi}{eta}{sub c}(2S) is confirmed using a data set more than 3 times larger than that of Belle's previous report, and no evidence for the process e{sup +}e{sup -}{yields}J/{psi}J/{psi} is found. We perform an angular analysis for J/{psi}{eta}{sub c} production and set an upper limit on the production of J/{psi}J/{psi}. Processes of the type e{sup +}e{sup -}{yields}{psi}(2S)(cc){sub res} have been observed for the first time; their rates are found to be comparable to those of e{sup +}e{sup -}{yields}J/{psi}(cc){sub res} processes.

• OSTI ID: 20705301
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 70; 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
ELECTROPRODUCTION
ETA C-2980 MESONS
ETA C-3590 MESONS
GEV RANGE
INCLUSIVE INTERACTIONS
J PSI-3097 MESONS
MASS FORMULAE
PSI-3770 MESONS
REST MASS