Measurements of the Branching Fractions for {psi}(3770){yields}D{sup 0}D{sup 0}, D{sup +}D{sup -}, DD, and the Resonance Parameters of {psi}(3770) and {psi}(2S)

Journal Article · Fri Sep 22 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.121801· OSTI ID:20860844

Ablikim, M; Bai, J Z; Bian, J G; Cai, X; Chen, H S; Chen, H X; Chen, J C; Chen, Jin; Chen, Y B; Chu, Y P; Cui, X Z; Deng, Z Y; Dong, L Y; Du, S X; Du, Z Z; Fang, J; Fu, C D; Gao, C S; Gu, S D; Guo, Y N ^[1]

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1. Institute of High Energy Physics, Beijing 100049 (China)

We measure the branching fractions for {psi}(3770){yields}D{sup 0}D{sup 0}, D{sup +}D{sup -}, DD, and non-DD to be (46.7{+-}4.7{+-}2.3)%, (36.9{+-}3.7{+-}2.8)%, (83.6{+-}7.3{+-}4.2)%, and (16.4{+-}7.3{+-}4.2)%, respectively. The resonance parameters of {psi}(3770) and {psi}(2S) are measured to be M{sub {psi}}{sub (3770)}=3772.2{+-}0.7{+-}0.3 MeV, {gamma}{sub {psi}}{sub (3770)}{sup tot}=26.9{+-}2.4{+-}0.3 MeV, and {gamma}{sub {psi}}{sub (3770)}{sup ee}=251{+-}26{+-}11 eV; M{sub {psi}}{sub (2S)}=3685.5{+-}0.0{+-}0.3 MeV, {gamma}{sub {psi}}{sub (2S)}{sup tot}=331{+-}58{+-}2 keV, and {gamma}{sub {psi}}{sub (2S)}{sup ee}=2.330{+-}0.036{+-}0.110 keV. We also measure the light hadron R value to be R{sub uds}=2.262{+-}0.054{+-}0.109 in the energy region from 3.660 to 3.872 GeV.

• OSTI ID: 20860844
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
D MINUS MESONS
D NEUTRAL MESONS
D PLUS MESONS
GEV RANGE 01-10
MEV RANGE
PAIR PRODUCTION
PARTICLE DECAY
PSI-3770 MESONS
RESONANCE