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Title: Poincaré-covariant analysis of heavy-quark baryons

Journal Article · · Physical Review D
 [1];  [2];  [3]
  1. Chongqing Univ., Chongqing (People's Republic of China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. 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 JP = 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.

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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Cited By (14)

Nucleon-to-Roper electromagnetic transition form factors at large Q 2 journal February 2019
Transition form factors: γ * + p → Δ ( 1232 ) , Δ ( 1600 ) journal August 2019
Masses of ground-state mesons and baryons, including those with heavy quarks text January 2019
A pattern for the flavor dependent quark-antiquark interaction journal October 2019
Approximate Hamiltonian for baryons in heavy-flavor QCD text January 2018
Spectrum of Light- and Heavy-Baryons journal April 2019
Spectrum and structure of octet and decuplet baryons and their positive-parity excitations journal September 2019
Elastic electromagnetic form factors of vector mesons text January 2019
Elastic electromagnetic form factors of vector mesons journal December 2019
Masses of light and heavy mesons and baryons: A unified picture journal December 2019
Approximate Hamiltonian for baryons in heavy-flavor QCD journal November 2018
Proton tensor charges from a Poincaré-covariant Faddeev equation journal September 2018
γ * γ → η , η ′ transition form factors journal January 2019
Masses of ground-state mesons and baryons, including those with heavy quarks journal August 2019

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