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Title: Pion and Kaon Valence-quark Parton Quasidistributions

Journal Article · · Physical Review D
 [1];  [2];  [3];  [4]
  1. Nanjing Univ. (China). Dept. of Physics
  2. Nankai Univ., Tianjin (China). School of Physics
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  4. Nanjing Univ. (China). Dept. of Physics; Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing (China)

Algebraic Ansatze for the Poincare-covariant Bethe-Salpeter wave functions of the pion and kaon arc used to calculate their light-front wave functions, parton distribution amplitudes, parton quasidistribution amplitudes, valence parton distribution functions, and parton quasidistribution functions (PqDFs). The light-front wave functions arc broad, concave functions, and the scale of flavor-symmetry violation in the kaon is roughly 15%, being set by the ratio of emergent masses in the s- and u-quark sectors. Parton quasidistribution amplitudes computed with longitudinal momentum Pz = 1.75 GeV provide a semiquantitatively accurate representation of the objective parton distribution amplitude, but even with Pz = 3 GeV, they cannot provide information about this amplitude's end point behavior. On the valence-quark domain, similar outcomes characterize PqDFs. Lastly, in this connection, however, the ratio of kaon-to-pion u-quark PqDFs is found to provide a good approximation to the true parton distribution function ratio on 0.4 ≲ x ≲ 0.8, suggesting that with existing resources computations of ratios of parton quasidistributions can yield results that support empirical comparison.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1461490
Alternate ID(s):
OSTI ID: 1437330
Journal Information:
Physical Review D, Vol. 97; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (10)

Drawing insights from pion parton distributions journal March 2020
Pion and kaon parton distribution functions from basis light front quantization and QCD evolution journal February 2020
Symmetry, symmetry breaking, and pion parton distributions journal March 2020
Pion and kaon valence quark distribution functions from Dyson-Schwinger equations journal September 2018
Pion and kaon structure at the electron-ion collider journal October 2019
Complete matching for quasidistribution functions in large momentum effective theory text January 2019
Pion and kaon valence quark distribution functions from Dyson-Schwinger equations text January 2018
Symmetry, symmetry breaking, and pion parton distributions text January 2019
Pion and Kaon Structure at the Electron-Ion Collider text January 2019
Matching generalized parton quasidistributions in the RI/MOM scheme text January 2019

Figures / Tables (8)