Strong decay patterns of the 1{sup -+} exotic hybrid mesons

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.014021· OSTI ID:21503879

Pengzhi, Huang; Huaxing, Chen; Shilin, Zhu ^[1]

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

We calculate the coupling constants of the decay modes 1{sup -+}{yields}{rho}{pi}, f{sub 1}{pi}, b{sub 1}{pi}, {eta}{pi}, {eta}{sup '}{pi}, a{sub 1}{pi}, f{sub 1}{eta} within the framework of the light-cone QCD sum rule. Then we calculate the partial width of these decay channels, which differ greatly from the existing calculations using phenomenological models. For the isovector 1{sup -+} state, the dominant decay modes are {rho}{pi}, f{sub 1}{pi}. For its isoscalar partner, its dominant decay mode is a{sub 1}{pi}. We also discuss the possible search of the 1{sup -+} state at BESIII, for example through the decay chains J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{gamma} or J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{rho}, where {pi}{sub 1} can be reconstructed through the decay modes {pi}{sub 1}{yields}{rho}{pi}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup 0} or {pi}{sub 1}{yields}f{sub 1}(1285){pi}{sup 0}. Hopefully the present work will be helpful to the experimental establishment of the 1{sup -+} hybrid meson.

• OSTI ID: 21503879
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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ELEMENTARY PARTICLES
EQUATIONS
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HADRONS
ISOVECTORS
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LIGHT CONE
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PIONS MINUS
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