English

Some heavy vector and tensor meson decay constants in light-front quark model

High Energy Physics - Phenomenology 2016-06-01 v2

Abstract

We study the decay constants (fMf_M) of the heavy vector (DD^{*}, DsD^{*}_{s}, BB^{*}, BsB^{*}_{s}, BcB^{*}_{c}) and tensor (D2D_{2}^{*}, Ds2D_{s2}^{*}, B2B^{*}_{2}, Bs2B^{*}_{s2}) mesons in the light front quark model. With the known pseudoscalar meson decay constants of fDf_D, fDsf_{D_s}, fBf_B, fBsf_{B_s}, and fBcf_{B_c} as the input parameters to determine the light-front meson wave functions, we obtain that fD,Ds,B,Bs,Bc=(252.011.6+13.8f_{D^{*}, D^{*}_{s}, B^{*},B^{*}_s,B^{*}_c} = (252.0^{+13.8}_{-11.6}, 318.312.6+15.3318.3^{+15.3}_{-12.6} , 201.941.4+43.2201.9^{+43.2}_{-41.4}, 244.2±7.0244.2\pm7.0, 473.4±18.2473.4\pm18.2) and (264.99.5+10.2(264.9^{+10.2}_{-9.5}, 330.99.0+9.9330.9^{+9.9}_{-9.0}, 220.246.2+49.1220.2^{+49.1}_{-46.2}, 265.7±8.0265.7\pm8.0, 487.6±19.2487.6\pm19.2) MeV with Gaussian and power-law wave functions, respectively, while fD2,Ds2,B2,Bs2f_{D_{2}^{*},D_{s2}^{*},B^{*}_{2},B^{*}_{s2}}= (143.621.8+24.9143.6^{+24.9}_{-21.8}, 209.524.2+29.1209.5^{+29.1}_{-24.2}, 80.927.7+33.880.9^{+33.8}_{-27.7}, 109.715.0+15.7109.7^{+15.7}_{-15.0}) MeV with only Gaussian wave functions.

Keywords

Cite

@article{arxiv.1604.07601,
  title  = {Some heavy vector and tensor meson decay constants in light-front quark model},
  author = {Chao-Qiang Geng and Chong-Chung Lih and Chuanhui Xia},
  journal= {arXiv preprint arXiv:1604.07601},
  year   = {2016}
}

Comments

14 pages, 8 figures, revised version with modified title accepted by EPJC

R2 v1 2026-06-22T13:41:02.351Z