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2024年10月30日
Chinese Physics C> 2014, Vol. 38> Issue(6) : 063101 DOI: 10.1088/1674-1137/38/6/063101

ρ-ω mixing in J/ø→VP decays

  • 1.

      School of Physics, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

  • 2.

      Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • The study of ρ-ω mixing has mainly focused on vector meson decays with isospin I=1, namely the ρ(ω)→π+π- process. In this paper, we present a study of ρ-ω mixing in ρ(ω)→π+π-π0 (I=0) using a flavor parameterization model for the J/ø→ VP process. By fitting a theoretical framework to PDG data, we obtain the SU(3)-breaking effect parameters sV=0.03±0.12, sP=0.17±0.17 and the ρ-ω mixing polarization operator ∏ρω=(0.006±0.011) GeV2. New values are found for the branching ratios when the mixing effect is incorporated: Br(J/ψ→ ωπ0) = (3.64 ±0.37)×10-4, Br(J/ψ→ ωη) = (1.48 ±0.17)×10-3, Br(J/ψ→ ωη') = (1.55±0.56)×10-4, these are different from the corresponding PDG2012 values by 19%, 15% and 15%, respectively.
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WANG Dong, BAN Yong and LI Gang. ρ-ω mixing in J/ø→VP decays[J]. Chinese Physics C, 2014, 38(6): 063101. doi: 10.1088/1674-1137/38/6/063101
WANG Dong, BAN Yong and LI Gang. ρ-ω mixing in J/ø→VP decays[J]. Chinese Physics C, 2014, 38(6): 063101.  doi: 10.1088/1674-1137/38/6/063101 shu
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Received: 2013-06-13
Revised: 2014-02-20
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ρ-ω mixing in J/ø→VP decays

    Corresponding author: BAN Yong,
  • 1.  School of Physics, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
  • 2.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received Date: 2013-06-13
  • Accepted Date: 2014-02-20
  • Available Online: 2014-06-05

Abstract: The study of ρ-ω mixing has mainly focused on vector meson decays with isospin I=1, namely the ρ(ω)→π+π- process. In this paper, we present a study of ρ-ω mixing in ρ(ω)→π+π-π0 (I=0) using a flavor parameterization model for the J/ø→ VP process. By fitting a theoretical framework to PDG data, we obtain the SU(3)-breaking effect parameters sV=0.03±0.12, sP=0.17±0.17 and the ρ-ω mixing polarization operator ∏ρω=(0.006±0.011) GeV2. New values are found for the branching ratios when the mixing effect is incorporated: Br(J/ψ→ ωπ0) = (3.64 ±0.37)×10-4, Br(J/ψ→ ωη) = (1.48 ±0.17)×10-3, Br(J/ψ→ ωη') = (1.55±0.56)×10-4, these are different from the corresponding PDG2012 values by 19%, 15% and 15%, respectively.

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