Strong decays of P-wave mixing heavy-light 1+ states

  • 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 D0, D±, Ds±, B0, B± and Bs are 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°+θ1. Valuable predictions for the strong decay widths are obtained:Γ(D1'0)=232 MeV, Γ(D10)=21.5 MeV, Γ(D1)=232 MeV, Γ(D1±)=21.5 MeV, Γ(Ds1)=0.0101 MeV, Γ(Ds1±)=0.950 MeV, Γ(B1)=263 MeV, Γ(B1±)=16.8 MeV, Γ(Bs1')=0.01987 MeV and Γ(Bs1)=0.412 MeV. It is found that the decay widths of Ds1± and Bs1 are very sensitive to the mixing angle. The results will provide theoretical assistance to future experiments.
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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
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 shu
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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 of P-wave mixing heavy-light 1+ states

    Corresponding author: Zhi-Hui Wang,
Fund Project:  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)

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 D0, D±, Ds±, B0, B± and Bs are 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°+θ1. Valuable predictions for the strong decay widths are obtained:Γ(D1'0)=232 MeV, Γ(D10)=21.5 MeV, Γ(D1)=232 MeV, Γ(D1±)=21.5 MeV, Γ(Ds1)=0.0101 MeV, Γ(Ds1±)=0.950 MeV, Γ(B1)=263 MeV, Γ(B1±)=16.8 MeV, Γ(Bs1')=0.01987 MeV and Γ(Bs1)=0.412 MeV. It is found that the decay widths of Ds1± and Bs1 are very sensitive to the mixing angle. The results will provide theoretical assistance to future experiments.

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