QCD Prediction for the Non-DD Annihilation Decay of {psi}(3770)

Journal Article · Fri Sep 12 04:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.112001· OSTI ID:21179700

Zhiguo, He; Ying, Fan; Kuangta, Chao ^[1]

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1. Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)

To clarify the marked difference between BES and CLEO measurements on the non-DD decays of the {psi}(3770), a 1{sup 3}D{sub 1}-dominated charmonium, we calculate the annihilation decay of {psi}(3770) in nonrelativistic QCD. By introducing the color-octet contributions, the results are free from infrared divergences. The color-octet matrix elements are estimated by solving the evolution equations. The S-D mixing effect is found to be very small. With m{sub c}=1.5{+-}0.1 GeV, our result is {gamma}({psi}(3770){yields}light hadrons)=467{sub +338}{sup -187} keV. For m{sub c}=1.4 GeV, together with the observed hadronic transitions and E1 transitions, the non-DD decay branching ratio of {psi}(3770) could reach about 5%. Our results do not favor the results of either the BES or the CLEO Collaborations, and further experimental tests are urged.

• OSTI ID: 21179700
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 11 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BRANCHING RATIO
CESR STORAGE RING
COLOR MODEL
E1-TRANSITIONS
EQUATIONS
GEV RANGE 01-10
INFRARED DIVERGENCES
MATHEMATICAL EVOLUTION
MATRIX ELEMENTS
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PSI-3770 MESONS
QUANTUM CHROMODYNAMICS