Mixing effects on spectroscopy and partonic observables of heavy mesons with logarithmic confining potential in a light-front quark model

被引:0
作者
Pandya, Bhoomika [1 ]
Gurjar, Bheemsehan [1 ]
Chakrabarti, Dipankar [1 ]
Choi, Ho-Meoyng [2 ]
Ji, Chueng-Ryong [3 ]
机构
[1] Indian Inst Technol Kanpur, Dept Phys, Kanpur 208016, India
[2] Kyungpook Natl Univ, Teachers Coll, Dept Phys Educ, Daegu 41566, South Korea
[3] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
基金
新加坡国家研究基金会;
关键词
DECAY CONSTANTS; LATTICE QCD; VECTOR;
D O I
10.1103/PhysRevD.110.094021
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using the variational principle, we systematically investigate the mass spectra and wave functions of both 1S and 2S state heavy pseudoscalar (P) and vector (V) mesons within the light-front quark model. This approach incorporates a Coulomb plus logarithmic confinement potential to accurately describe the constituent quark and antiquark dynamics. Additionally, spin hyperfine interactions are introduced perturbatively to compute the masses of pseudoscalar and vector mesons. The present analyses of the 1S and 2S states require the consideration of mixing between them to account for empirical constraints. These constraints include the mass gap OMP >OMV, where OMP(V) = M-P(V)(2S) - M-P(V)(1S) and the hierarchy of the decay constants f 1S > f 2S . We find the optimal value of the mixing angle to be theta = 18 degrees, significantly enhancing the consistency between our spectroscopic predictions and the experimental data compiled by the Particle Data Group. Furthermore, based on the predicted mass, the newly observed resonance B J ( 5840 ) could be assigned as a 2(1) S-0 state in the B meson family. The study also reports various pertinent observables, including twist-two distribution amplitudes, electromagnetic form factors, charge radii, xi moments, and transition form factors that are found to be consistent with both available lattice simulations and experimental data. In addition, our predicted branching ratios for the channels of B+ -> tau(+)nu(tau) as well as rare decays of B-0 and B(s )(0)appear in accordance with experimental data.
引用
收藏
页数:22
相关论文
共 103 条
  • [51] Ahmady M., Keller S., Thibodeau M., Sandapen R., Reexamination of the rare decay (Equation presented) using holographic light-front QCD, Phys. Rev. D, 100, (2019)
  • [52] Arifi A. J., Choi H.-M., Ji C.-R., Oh Y., Independence of current components, polarization vectors, and reference frames in the light-front quark model analysis of meson decay constants, Phys. Rev. D, 107, (2023)
  • [53] Choi H.-M., Ji C.-R., Self-consistent covariant description of vector meson decay constants and chirality-even quark-antiquark distribution amplitudes up to twist 3 in the light-front quark model, Phys. Rev. D, 89, (2014)
  • [54] Choi H.-M., Ji C.-R., Consistency of the pion form factor and unpolarized transverse momentum dependent parton distributions beyond leading twist in the light-front quark model, Phys. Rev. D, 110, (2024)
  • [55] Ryu H.-Y., Choi H.-M., Ji C.-R., Systematic twist expansion of (Equation presented) transition form factors in light-front quark model, Phys. Rev. D, 98, (2018)
  • [56] Choi H.-M., Ryu H.-Y., Ji C.-R., Spacelike and timelike form factors for the (Equation presented) transitions in the light-front quark model, Phys. Rev. D, 96, (2017)
  • [57] Villa S., Review of (Equation presented) leptonic decays, (2007)
  • [58] Workman R. L., Review of particle physics, Prog. Theor. Exp. Phys, 2022, (2022)
  • [59] Bobeth C., Gorbahn M., Hermann T., Misiak M., Stamou E., Steinhauser M., (Equation presented) in the standard model with reduced theoretical uncertainty, Phys. Rev. Lett, 112, (2014)
  • [60] Bobeth C., Gorbahn M., Stamou E., Electroweak corrections to (Equation presented), Phys. Rev. D, 89, (2014)