Transverse momentum structure of strange and charmed baryons: A light-front Hamiltonian approach

Open Access

Transverse momentum structure of strange and charmed baryons: A light-front Hamiltonian approach

Zhimin Zhu, Tiancai Peng, Zhi Hu, Siqi Xu, Chandan Mondal, Xingbo Zhao, and James P. Vary (BLFQ Collaboration)

Phys. Rev. D 108, 036009 – Published 8 August 2023

Abstract

Under the basis light-front quantization framework, we investigate the leading-twist transverse-momentum-dependent parton distribution functions (TMDs) for $Λ$ and $Λ_{c}$ baryons, the spin- $1 / 2$ composite systems consisting of two light quarks ( $u$ and $d$ ) and a $s / c$ quark. We evaluate the TMDs using the overlaps of the light-front wave functions in the leading Fock sector, which are obtained by solving the light-front eigenvalue equation. We also study the spin densities of quarks in momentum space for various polarizations. In the same model, we compare the TMDs of the strange and charmed baryons and the proton by reviewing their spin structures in the quark model and the probabilistic interpretations of their TMDs.

Received 15 April 2023
Accepted 17 July 2023

DOI:https://doi.org/10.1103/PhysRevD.108.036009

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nonrelativistic QCD QCD phenomenology

Baryons Heavy baryons

Helicity distribution functions Nucleon spin structure Particle properties Transversity distribution functions

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Zhimin Zhu ^1,2,3,*, Tiancai Peng ^4,5,†, Zhi Hu ^1,2,3,‡, Siqi Xu^1,2,3,§, Chandan Mondal ^1,2,3,∥, Xingbo Zhao ^1,2,3,¶, and James P. Vary ^6,** (BLFQ Collaboration)

¹Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu, 730000, China
²School of Nuclear Physics, University of Chinese Academy of Sciences, Beijing, 100049, China
³CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
⁴School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
⁵Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China
⁶Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

^*zhuzhimin@impcas.ac.cn
^†pengtc20@lzu.edu.cn
^‡huzhi0826@gmail.com
^§xsq234@impcas.ac.cn
^∥mondal@impcas.ac.cn
^¶xbzhao@impcas.ac.cn
^**jvary@iastate.edu

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Issue

Vol. 108, Iss. 3 — 1 August 2023

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Physical Review D

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