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Title: Decay properties of the 1{sup -+} hybrid state

Abstract

Within the framework of the QCD sum rules, we consider the three-point correlation function, work at the limit q{sup 2}{yields}0 and m{sub {pi}}{yields}0, and pick out the singular term {approx}(1/q{sup 2}) to extract the pionic coupling constants of the 1{sup -+} hybrid meson. Then, we calculate the decay widths of different modes. The decay width of the S-wave modes b{sub 1{pi}}, f{sub 1{pi}} increases quickly as the hybrid meson mass and decay momentum increase. But for the low mass hybrid meson around 1.6 GeV, the P-wave decay mode {rho}{pi} is very important and its width is around 180 MeV, while the widths of {eta}{pi} and {eta}{sup '{pi}} are strongly suppressed. We suggest the experimental search of {pi}{sub 1}(1600) through the decay chains at the Beijing Spectrometer: J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{gamma} or J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{rho}, where the {pi}{sub 1} state 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}. It is also interesting to look for {pi}{sub 1} using the available BELLE/BABAR data through the process e{sup +}e{sup -}{yields}{gamma}*{yields}{rho}{pi}{sub 1}, b{sub 1}{pi}{sub 1}, {gamma}{pi}{sub 1}, etc.

Authors:
; ; ;  [1]
  1. Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
21503865
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.83.014006; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRELATION FUNCTIONS; COUPLING CONSTANTS; ELECTRON-POSITRON INTERACTIONS; GEV RANGE 01-10; J PSI-3097 MESONS; MASS; MEV RANGE 100-1000; P WAVES; PARTICLE DECAY; PIONS MINUS; PIONS NEUTRAL; QUANTUM CHROMODYNAMICS; S WAVES; SPECTROMETERS; SUM RULES; BOSONS; CHARMONIUM; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FIELD THEORIES; FUNCTIONS; GEV RANGE; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MEASURING INSTRUMENTS; MESONS; MEV RANGE; PARTIAL WAVES; PARTICLE INTERACTIONS; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARKONIUM; VECTOR MESONS

Citation Formats

Huaxing, Chen, Zixing, Cai, Pengzhi, Huang, Shilin, Zhu, and Department of Physics and State Key Laboratory of Nuclear Physics and Technology and Center of High Energy Physics, Peking University, Beijing 100871. Decay properties of the 1{sup -+} hybrid state. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.014006.
Huaxing, Chen, Zixing, Cai, Pengzhi, Huang, Shilin, Zhu, & Department of Physics and State Key Laboratory of Nuclear Physics and Technology and Center of High Energy Physics, Peking University, Beijing 100871. Decay properties of the 1{sup -+} hybrid state. United States. https://doi.org/10.1103/PHYSREVD.83.014006
Huaxing, Chen, Zixing, Cai, Pengzhi, Huang, Shilin, Zhu, and Department of Physics and State Key Laboratory of Nuclear Physics and Technology and Center of High Energy Physics, Peking University, Beijing 100871. 2011. "Decay properties of the 1{sup -+} hybrid state". United States. https://doi.org/10.1103/PHYSREVD.83.014006.
@article{osti_21503865,
title = {Decay properties of the 1{sup -+} hybrid state},
author = {Huaxing, Chen and Zixing, Cai and Pengzhi, Huang and Shilin, Zhu and Department of Physics and State Key Laboratory of Nuclear Physics and Technology and Center of High Energy Physics, Peking University, Beijing 100871},
abstractNote = {Within the framework of the QCD sum rules, we consider the three-point correlation function, work at the limit q{sup 2}{yields}0 and m{sub {pi}}{yields}0, and pick out the singular term {approx}(1/q{sup 2}) to extract the pionic coupling constants of the 1{sup -+} hybrid meson. Then, we calculate the decay widths of different modes. The decay width of the S-wave modes b{sub 1{pi}}, f{sub 1{pi}} increases quickly as the hybrid meson mass and decay momentum increase. But for the low mass hybrid meson around 1.6 GeV, the P-wave decay mode {rho}{pi} is very important and its width is around 180 MeV, while the widths of {eta}{pi} and {eta}{sup '{pi}} are strongly suppressed. We suggest the experimental search of {pi}{sub 1}(1600) through the decay chains at the Beijing Spectrometer: J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{gamma} or J/{psi}({psi}{sup '}){yields}{pi}{sub 1}+{rho}, where the {pi}{sub 1} state 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}. It is also interesting to look for {pi}{sub 1} using the available BELLE/BABAR data through the process e{sup +}e{sup -}{yields}{gamma}*{yields}{rho}{pi}{sub 1}, b{sub 1}{pi}{sub 1}, {gamma}{pi}{sub 1}, etc.},
doi = {10.1103/PHYSREVD.83.014006},
url = {https://www.osti.gov/biblio/21503865}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 1,
volume = 83,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2011},
month = {Sat Jan 01 00:00:00 EST 2011}
}