Heavy flavor-asymmetric pseudoscalar mesons on the light front

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2024-11-07 DOI:10.1103/physrevd.110.094010

Chao Shi, Pengfei Liu, Yi-Lun Du, Wenbao Jia

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引用次数: 0

Abstract

We extract the leading Fock-state light front wave functions of heavy flavor-asymmetric pseudoscalar mesons

𝐷

𝐵

, and

𝐵 𝑐

from their Bethe-Salpeter wave functions, based on the Dyson-Schwinger equations approach. We then study their leading-twist parton distribution amplitudes, generalized parton distribution functions, and transverse momentum-dependent parton distributions. The spatial distributions of the quark and antiquark on the transverse plane are presented, along with their charge and energy distributions on the light front. We find that in the considered mesons, the heavier quarks carry most of the longitudinal momentum fraction, resulting in narrow

𝑥

distributions, while the lighter quarks play an active role in shaping the transverse distributions in both spatial and momentum space, exhibiting a duality that embodies characteristics of both light mesons and heavy quarkonium.

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轻前沿的重味道不对称伪谱介子

我们基于戴森-施温格方程的方法，从重味道不对称伪谱介子𝐷、𝐵和𝐵𝑐的贝特-萨尔佩特波函数中提取了它们的前导福克态光前波函数。然后，我们研究了它们的前旋偏子分布振幅、广义偏子分布函数和横动量相关偏子分布。我们给出了夸克和反夸克在横向平面上的空间分布，以及它们在光前的电荷和能量分布。我们发现，在所考虑的介子中，较重的夸克携带了大部分纵向动量部分，导致了狭窄的𝑥分布，而较轻的夸克在塑造空间和动量空间的横向分布方面发挥了积极作用，表现出了体现轻介子和重夸克子特征的二重性。

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.