Search for C=+ charmonium and bottomonium states in e{sup +}e{sup -}{yields}{gamma}+ X at B factories

Journal Article · Tue Dec 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.114014· OSTI ID:21313469

Dan, Li; Kuangta, Chao ^[1]; Zhiguo, He ^[1]

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

We study the production of C=+ charmonium states X in e{sup +}e{sup -}{yields}{gamma}+X at B factories with X={eta}{sub c}(nS) (n=1, 2, 3), {chi}{sub cJ}(mP) (m=1, 2), and {sup 1}D{sub 2}(1D). In the S- and P-wave case, contributions of QED with one-loop QCD corrections are calculated within the framework of nonrelativistic QCD (NRQCD), and in the D-wave case only the QED contribution is considered. We find that in most cases the one-loop QCD corrections are negative and moderate, in contrast to the case of double charmonium production e{sup +}e{sup -}{yields}J/{psi}+X, where one-loop QCD corrections are positive and large in most cases. We also find that the production cross sections of some of these states in e{sup +}e{sup -}{yields}{gamma}+X are larger than that in e{sup +}e{sup -}{yields}J/{psi}+X by an order of magnitude even after the negative one-loop QCD corrections are included. We then argue that search for the X(3872), X(3940), Y(3940), and X(4160) in e{sup +}e{sup -}{yields}{gamma}+X at B factories may be helpful to clarify the nature of these states. For completeness, the production of bottomonium states in e{sup +}e{sup -} annihilation is also discussed.

• OSTI ID: 21313469
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
B MESONS
BOTTOMONIUM
CHARMONIUM
CORRECTIONS
CROSS SECTIONS
D WAVES
ELECTRON-POSITRON COLLISIONS
GAMMA DECAY
MESON FACTORIES
P WAVES
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS