Poincaré-covariant analysis of heavy-quark baryons

Qin, Si -Xue; Roberts, Craig D.; Schmidt, Sebastian M.

doi:10.1103/PhysRevD.97.114017

Title: Poincaré-covariant analysis of heavy-quark baryons

Journal Article · 12 June 2018 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.97.114017 · OSTI ID:1460981

Qin, Si -Xue ^[1]; Roberts, Craig D. ^[2]; Schmidt, Sebastian M. ^[3]

Chongqing Univ., Chongqing (People's Republic of China)
Argonne National Lab. (ANL), Argonne, IL (United States)
Forschungszentrum Julich and JARA, Julich (Germany)

We use a symmetry-preserving truncation of meson and baryon bound-state equations in quantum field theory in order to develop a unified description of systems constituted from light and heavy quarks. In particular, we compute the spectrum and leptonic decay constants of ground-state pseudoscalar and vector mesons: q'(q) over bar, Q'(Q) over bar, with q', q = u, d, s and Q', Q = c, b, and the masses of J^P = 3/2⁺ baryons and their first positive-parity excitations, including those containing one or more heavy quarks. This Poincare covariant analysis predicts that such baryons have a complicated angular momentum structure. For instance, the ground states are all primarily S wave in character, but each possesses P-, D- and F-wave components, with the P-wave fraction being large in the qqq states, and the first positive-parity excitation in each channel having a large D-wave component, which grows with increasing current-quark mass, but also exhibits features consistent with a radial excitation. In conclusion, the configuration space extent of all such baryons decreases as the mass of the valence-quark constituents increases.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1460981

Alternate ID(s):: OSTI ID: 1454348

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 97; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Transition form factors: γ * + p → Δ ( 1232 ) , Δ ( 1600 ) Lu, Y.; Chen, C.; Cui, Z. -F. Physical Review D, Vol. 100, Issue 3 https://doi.org/10.1103/physrevd.100.034001	journal	August 2019
Masses of ground-state mesons and baryons, including those with heavy quarks Yin, Pei-Lin; Chen, Chen; Krein, Gastao arXiv https://doi.org/10.48550/arxiv.1903.00160	text	January 2019
A pattern for the flavor dependent quark-antiquark interaction Chen, Muyang; Chang, Lei Chinese Physics C, Vol. 43, Issue 11 https://doi.org/10.1088/1674-1137/43/11/114103	journal	October 2019
Approximate Hamiltonian for baryons in heavy-flavor QCD Serafin, Kamil; Gómez-Rocha, María; More, Jai arXiv https://doi.org/10.48550/arxiv.1805.03436	text	January 2018
Spectrum of Light- and Heavy-Baryons Qin, S. -X.; Roberts, C. D.; Schmidt, S. M. Few-Body Systems, Vol. 60, Issue 2 https://doi.org/10.1007/s00601-019-1488-x	journal	April 2019
Spectrum and structure of octet and decuplet baryons and their positive-parity excitations Chen, Chen; Krein, Gastão; Roberts, Craig D. Physical Review D, Vol. 100, Issue 5 https://doi.org/10.1103/physrevd.100.054009	journal	September 2019
Elastic electromagnetic form factors of vector mesons Xu, Yin-Zhen; Binosi, Daniele; Cui, Zhu-Fang arXiv https://doi.org/10.48550/arxiv.1911.05199	text	January 2019
Elastic electromagnetic form factors of vector mesons Xu, Y. -Z.; Binosi, D.; Cui, Z. -F. Physical Review D, Vol. 100, Issue 11 https://doi.org/10.1103/physrevd.100.114038	journal	December 2019
Masses of light and heavy mesons and baryons: A unified picture Gutiérrez-Guerrero, L. X.; Bashir, Adnan; Bedolla, Marco A. Physical Review D, Vol. 100, Issue 11 https://doi.org/10.1103/physrevd.100.114032	journal	December 2019
Approximate Hamiltonian for baryons in heavy-flavor QCD Serafin, Kamil; Gómez-Rocha, María; More, Jai The European Physical Journal C, Vol. 78, Issue 11 https://doi.org/10.1140/epjc/s10052-018-6436-2	journal	November 2018
Proton tensor charges from a Poincaré-covariant Faddeev equation Wang, Qing-Wu; Qin, Si-Xue; Roberts, Craig D. Physical Review D, Vol. 98, Issue 5 https://doi.org/10.1103/physrevd.98.054019	journal	September 2018
γ * γ → η , η ′ transition form factors Ding, Minghui; Raya, Khépani; Bashir, Adnan Physical Review D, Vol. 99, Issue 1 https://doi.org/10.1103/physrevd.99.014014	journal	January 2019
Masses of ground-state mesons and baryons, including those with heavy quarks Yin, Pei-Lin; Chen, Chen; Krein, Gastão Physical Review D, Vol. 100, Issue 3 https://doi.org/10.1103/physrevd.100.034008	journal	August 2019

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