Particle–antiparticle asymmetries of Λ production in hadron–nucleon collisions

Abstract

The particle-antiparticle asymmetries of Λ production in 250 GeV/c π ± , K ± , and p -nucleon collisions are studied with two model parametrizations of quark to Λ fragmentation functions. It is shown that the available data can be qualitatively explained by the calculated results in both the quark-diquark model and a pQCD based analysis of fragmentation functions. The differences in the two model predictions are significant for K ± beams, and high precision measurements of the asymmetries with detailed x F and P T information can discriminate between different predictions.

Dihadron interference fragmentation functions in proton-proton collisions

“…A lively discussion is ongoing in this field in order to correctly interpret the available data for both hadronic collisions and semi-inclusive DIS (see, for example, Refs. [42,45,46,47,48,49]). …”

Nuclear EMC effect through Λ¯/Λ production in semi-inclusive deep-inelastic scattering processes

“…Then the experimental processes and quantities that are sensitive to the sea content in the nucleus should enable us to discriminate different models. It was shown that the Λ/Λ ratio of production cross sections in semi-inclusive DIS (SIDIS) process is a physical quantity that is sensitive to the sea quark content of nucleons [29][30][31][32][33]. In Ref.…”