Chinese Physics C > 2006, Vol. 30 > Issue(11): 1041-1047

Decays of D_sj^*(2317) and D_sj(2460) Mesons in the Quark Model

Department of Physics, Peking University, Beijing 100871, China

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We study the decay widths of the narrow resonances D _sj ^*(2317) and D _sj(2460) in the chiral quark model, together with the well-known D ^*and D _s ^*mesons. All the parameters in our calculation are taken from Godfrey and Isgur's quark model except the π ⁰－η mixing angle which is fixed by the D _s ^*decay widths. The calculated electromagnetic decay widths agree with those from other groups and the experimental data available quite well. However, the pionic decay widths of D _sj(2317) and D _sj(2460) are too small to fit the experimental data. We suspect that the simple chiral quark pion axial-vector interaction Hamiltonian is not suitable for hadron strong decays of D _sj(2317) and D _sj(2460).

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[1]

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WANG Feng-Lin, CHEN Xiao-Lin, LU Da-Hai, ZHU Shi-Lin and DENG Wei-Zhen. Decays of D _sj ^*(2317) and D _sj(2460) Mesons in the Quark Model[J]. Chinese Physics C, 2006, 30(11): 1041-1047.

WANG Feng-Lin, CHEN Xiao-Lin, LU Da-Hai, ZHU Shi-Lin and DENG Wei-Zhen. Decays of D _sj ^*(2317) and D _sj(2460) Mesons in the Quark Model[J]. Chinese Physics C, 2006, 30(11): 1041-1047. shu

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Received: 2006-04-13
Revised: 2006-05-11

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Decays of D_sj^*(2317) and D_sj(2460) Mesons in the Quark Model

Corresponding author:DENG Wei-Zhen,

Department of Physics, Peking University, Beijing 100871, China

Received Date:2006-04-13

Accepted Date:2006-05-11

Available Online:2006-11-05

Abstract:We study the decay widths of the narrow resonances D_sj^*(2317) and D_sj(2460) in the chiral quark model, together with the well-known D^*and D_s^*mesons. All the parameters in our calculation are taken from Godfrey and Isgur's quark model except the π⁰－η mixing angle which is fixed by the D_s^*decay widths. The calculated electromagnetic decay widths agree with those from other groups and the experimental data available quite well. However, the pionic decay widths of D_sj(2317) and D_sj(2460) are too small to fit the experimental data. We suspect that the simple chiral quark pion axial-vector interaction Hamiltonian is not suitable for hadron strong decays of D_sj(2317) and D_sj(2460).

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Decays of D_sj^*(2317) and D_sj(2460) Mesons in the Quark Model

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通讯作者:陈斌, bchen63@163.com

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