RT Journal Article
T1 Proton and pion distribution functions in counterpoint
A1 Lu, Ya
A1 Chang, L.
A1 Raya, Khépani
A1 Roberts, Craig D.
A1 Rodríguez Quintero, José
AB Working with proton and pion valence distribution functions (DFs) determined consistently at the same, unique hadron scale and exploiting the possibility that there is an effective charge which defines an evolution scheme for DFs that is all-orders exact, we obtain a unified body of predictions for all proton and pion DFs – valence, glue, and four-flavour-separated sea. Whilst the hadron light-front momentum fractions carried by identifiable parton classes are the same for the proton and pion at any scale, the pointwise behaviour of the DFs is strongly hadron-dependent. All calculated distributions comply with quantum chromodynamics constraints on low-and high-xscaling behaviour and, owing to emergent hadron mass, pion DFs are the most dilated. These results aid in elucidating the sources of similarities and differences between proton and pion structure
PB Elsevier
SN 0370-2693
YR 2022
FD 2022-05
LK http://hdl.handle.net/10272/20963
UL http://hdl.handle.net/10272/20963
LA eng
NO Lu, Y., Chang, L., Raya, K., Roberts, C. D., & Rodríguez-Quintero, J. (2022). Proton and pion distribution functions in counterpoint. In Physics Letters B (Vol. 830, p. 137130). Elsevier BV. https://doi.org/10.1016/j.physletb.2022.137130
NO We are grateful for constructive comments from D.Binosi, C.Chen, Z.-F.Cui, M.Ding, F.Gao, R.Sufian and S.M.Schmidt. Work supported by: National Natural Science Foundation of China (grant no. 12135007); Spanish Ministry of Science and Innovation (MICINN) (grant no. PID2019-107844GB-C22); and Junta de An-dalucía (grant nos. P18-FR-5057, UHU-1264517)
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026