TY - JOUR
T1 - Parton distributions of light quarks and antiquarks in the proton
AU - Chang, Lei
AU - Gao, Fei
AU - Roberts, Craig D.
N1 - Publisher Copyright:
© 2022 The Author(s)
PY - 2022/6/10
Y1 - 2022/6/10
N2 - An algebraic Ansatz for the proton's Poincaré-covariant wave function, which includes both scalar and pseudovector diquark correlations, is used to calculate proton valence, sea, and glue distribution functions (DFs). Regarding contemporary data, a material pseudovector diquark component in the proton is necessary for an explanation of the neutron-proton structure function ratio; and a modest Pauli blocking effect in the gluon splitting function is sufficient to explain the proton's light-quark antimatter asymmetry. In comparison with pion DFs, the light-front momentum fractions carried by all identifiable parton classes are the same; on the other hand, the higher moments are different. Understanding these features may provide insights that explain distinctions between Nambu-Goldstone bosons and seemingly less complex hadrons.
AB - An algebraic Ansatz for the proton's Poincaré-covariant wave function, which includes both scalar and pseudovector diquark correlations, is used to calculate proton valence, sea, and glue distribution functions (DFs). Regarding contemporary data, a material pseudovector diquark component in the proton is necessary for an explanation of the neutron-proton structure function ratio; and a modest Pauli blocking effect in the gluon splitting function is sufficient to explain the proton's light-quark antimatter asymmetry. In comparison with pion DFs, the light-front momentum fractions carried by all identifiable parton classes are the same; on the other hand, the higher moments are different. Understanding these features may provide insights that explain distinctions between Nambu-Goldstone bosons and seemingly less complex hadrons.
KW - Continuum Schwinger function methods
KW - Emergence of mass
KW - Nonperturbative quantum field theory
KW - Parton distributions
KW - Proton structure
KW - Strong interactions in the standard model of particle physics
UR - http://www.scopus.com/inward/record.url?scp=85128242421&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2022.137078
DO - 10.1016/j.physletb.2022.137078
M3 - Article
AN - SCOPUS:85128242421
SN - 0370-2693
VL - 829
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 137078
ER -
