Decay constants of pseudoscalar and vector mesons with improved holographic wavefunction

被引:0
|
作者
常钦 [1 ,2 ]
李晓楠 [1 ]
李新强 [2 ]
苏方 [2 ]
机构
[1] Institute of Particle and Nuclear Physics,Henan Normal University
[2] Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics(MOE),Central China Normal University
基金
中国国家自然科学基金;
关键词
light-front holographic QCD; holographic wavefuntions; decay constant; dynamical spin effect;
D O I
暂无
中图分类号
O572.33 [介子];
学科分类号
070202 ;
摘要
We calculate the decay constants of light and heavy-light pseudoscalar and vector mesons with improved soft-wall holographic wavefuntions,which take into account the effects of both quark masses and dynamical spins.We find that the predicted decay constants,especially for the ratio f V/f P,based on light-front holographic QCD,can be significantly improved,once the dynamical spin effects are taken into account by introducing the helicity-dependent wavefunctions.We also perform detailed χ;analyses for the holographic parameters(i.e.the mass-scale parameterκ and the quark masses),by confronting our predictions with the data for the charged-meson decay constants and the meson spectra.The fitted values for these parameters are generally in agreement with those obtained by fitting to the Regge trajectories.At the same time,most of our results for the decay constants and their ratios agree with the data as well as the predictions based on lattice QCD and QCD sum rule approaches,with only a few exceptions observed.
引用
收藏
页码:16 / 27
页数:12
相关论文
共 50 条
  • [41] SU(3) symmetry breaking in decay constants and electromagnetic properties of pseudoscalar heavy mesons
    Hwang, Chien-Wen
    PHYSICAL REVIEW D, 2010, 81 (05):
  • [42] Variational analysis of mass spectra and decay constants for ground state pseudoscalar and vector mesons in the light-front quark model
    Choi, Ho-Meoyng
    Ji, Chueng-Ryong
    Li, Ziyue
    Ryu, Hui-Young
    PHYSICAL REVIEW C, 2015, 92 (05):
  • [43] Decay constants of charm and beauty pseudoscalar heavy-light mesons on fine lattices
    Khan, A. Ali
    Braun, V.
    Burch, T.
    Goeckeler, M.
    Lacagnina, G.
    Schaedfer, A.
    Schierholz, G.
    PHYSICS LETTERS B, 2007, 652 (2-3) : 150 - 157
  • [44] Masses of S and P wave mesons and pseudoscalar decay constants using a confinement scheme
    JN Pandya
    PC Vinodkumar
    Pramana, 2001, 57 : 821 - 827
  • [45] Leptonic Decay Widths and Decay Constants of Vector Mesons in a Relativistic Potential Model
    Jena, S. N.
    Mishra, R. N.
    Nanda, P. K.
    Sahoo, S.
    CHINESE JOURNAL OF PHYSICS, 2015, 53 (04)
  • [46] Mass spectrum and decay constants of radially excited vector mesons
    Mojica, Fredy F.
    Vera, Carlos E.
    Rojas, Eduardo
    El-Bennich, Bruno
    PHYSICAL REVIEW D, 2017, 96 (01)
  • [47] Strong coupling constants of bottom and charmed mesons with scalar, pseudoscalar, and axial vector kaons
    Sundu, H.
    Sungu, J. Y.
    Sahin, S.
    Yinelek, N.
    Azizi, K.
    PHYSICAL REVIEW D, 2011, 83 (11)
  • [48] Λ and Σ resonances coupled to vector and pseudoscalar mesons
    Khemchandani, K. P.
    Torres, A. Martinez
    Nagahiro, H.
    Hosaka, A.
    NUCLEAR PHYSICS A, 2013, 914 : 300 - 304
  • [49] PSEUDOSCALAR plus VECTOR EXCHANGES IN PRODUCTION OF VECTOR MESONS
    HUFF, RW
    PHYSICAL REVIEW B, 1964, 133 (4B) : 1078 - +
  • [50] ON THE CHARMED MESON DECAY INTO 2 PSEUDOSCALAR MESONS
    SAKAI, S
    PROGRESS OF THEORETICAL PHYSICS, 1981, 65 (03): : 992 - 1000