Chinese Physics C > 2018, Vol. 42 > Issue(12): 123101 DOI: 10.1088/1674-1137/42/12/123101

Strong decays ofP-wave mixing heavy-light 1⁺states

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Abstract：
Many P-wave mixing heavy-light 1 ⁺states have not yet been discovered by experiment, while others have been discovered but without width information, or with large uncertainties on the widths. In this paper, the strong decays of the P-wave mixing heavy-light 1 ⁺states D ⁰, D ^±, D _s ^±, B ⁰, B ^±and B _sare studied by the improved Bethe-Salpeter (B-S) method with two conditions of mixing angle θ:one is θ=35.3°; the other is considering a correction to the mixing angle θ=35.3°+ θ ₁. Valuable predictions for the strong decay widths are obtained:Γ( D ₁ ^'0)=232 MeV, Γ( D ₁ ⁰)=21.5 MeV, Γ( D ₁ ^'±)=232 MeV, Γ( D ₁ ^±)=21.5 MeV, Γ( D _s1 ^'±)=0.0101 MeV, Γ( D _s1 ^±)=0.950 MeV, Γ( B ₁ ^'±)=263 MeV, Γ( B ₁ ^±)=16.8 MeV, Γ( B _s1')=0.01987 MeV and Γ( B _s1)=0.412 MeV. It is found that the decay widths of D _s1 ^±and B _s1are very sensitive to the mixing angle. The results will provide theoretical assistance to future experiments.
- P-wave mixing states,
- strong decay,
- mixing angle,
- improved B-S method

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Zhi-Hui Wang, Yi Zhang, Tian-Hong Wang, Yue Jiang, Qiang Li and Guo-Li Wang. Strong decays of P-wave mixing heavy-light 1 ⁺states[J]. Chinese Physics C, 2018, 42(12): 123101. doi: 10.1088/1674-1137/42/12/123101

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Received: 2018-07-08

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Supported by the National Natural Science Foundation of China (NSFC) (11405004, 11405037, 11505039, 11575048), the Key Scientific Research Projects in 2017 at North Minzu University (2017KJ11), Ningxia First-Class Discipline and Scientific Research Projects (Electronic Science and Technology) (NXYLXK2017A07) and the Fundamental Research Funds for the Central Universities, North Minzu University (2018XYZDX08)

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Strong decays ofP-wave mixing heavy-light 1⁺states

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