Measurement of the e{sup +}e{sup -}{yields}J/{psi}cc cross section at {radical}(s){approx_equal}10.6 GeV

Journal Article · Wed Apr 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.071101· OSTI ID:21308128

Pakhlov, P; Balagura, V; Chistov, R; Danilov, M; Liventsev, D; Mizuk, R; Pakhlova, G; Tikhomirov, I; Uglov, T ^[1]; Aihara, H ^[2]; Arinstein, K; Bondar, A; Eidelman, S; Epifanov, D; Gabyshev, N; Kuzmin, A; Poluektov, A; Shwartz, B; Usov, Y; Vinokurova, A ^[3]

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1. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
2. Department of Physics, University of Tokyo, Tokyo (Japan)
3. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

We present a new measurement of the e{sup +}e{sup -}{yields}J/{psi}cc cross section where the cc pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/{psi} and a charmed hadron are reconstructed, while the latter process is measured using the recoil mass technique, which allows the identification of two-body final states without reconstruction of one of the charmonia. The measured e{sup +}e{sup -}{yields}J/{psi}cc cross section is (0.74{+-}0.08(+0.09/-0.08)) pb, and the e{sup +}e{sup -}{yields}J/{psi}X{sub non-cc} cross section is (0.43{+-}0.09{+-}0.09) pb. We note that the measured cross sections are obtained from a data sample with the multiplicity of charged tracks in the event larger than 4; corrections for the effect of this requirement are not performed as this cannot be done in a model-independent way. The analysis is based on a data sample with an integrated luminosity of 673 fb{sup -1} recorded near the {upsilon}(4S) resonance with the Belle detector at the KEKB e{sup +}e{sup -} asymmetric-energy collider.

• OSTI ID: 21308128
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CHARMONIUM
CORRECTIONS
CROSS SECTIONS
ELECTRON-POSITRON COLLISIONS
GEV RANGE 01-10
HADRONS
J PSI-3097 MESONS
KEK PHOTON FACTORY
LUMINOSITY
MASS
MULTIPLICITY
PAIR PRODUCTION
PARTICLE TRACKS
RECOILS
RESONANCE
TWO-BODY PROBLEM
VECTOR MESONS