Naive time-reversal odd phenomena in semi-inclusive deep-inelastic scattering from light-cone constituent quark models

Abstract

We present results for leading-twist azimuthal asymmetries in semi-inclusive lepton-nucleon deepinelastic scattering due to naively time-reversal odd transverse-momentum dependent parton distribution functions from the light-cone constituent quark model. We carefully discuss the range of applicability of the model, especially with regard to positivity constraints and evolution effects. We find good agreement with available experimental data from COMPASS and HERMES, and present predictions to be tested in forthcoming experiments at Jefferson Lab.

Pion transverse momentum dependent parton distributions in a light-front constituent approach, and the Boer-Mulders effect in the pion-induced Drell-Yan process

“…We will refer to this approach as the light-front constituent model (LFCM). The LFCM was successfully applied to describe many nucleon properties [51][52][53][54][55][56][57][58][59][60] including TMDs [61][62][63][64]. For the pion, the specific model we will adopt for the minimal Fock-space components of the LFWF has been originally proposed in Refs.…”

Double Collins effect in e+e−→ΛΛ¯Wang1, Yang2, Lü3 2018Phys. Rev. D9030View full textAdd to dashboardCite

“…An explanation was given in Ref. [70], stating that the violation may arise from the fact that T-odd TMD distributions or fragmentation functions TABLE I. Values of the parameters used in the spectator diquark model [48].…”

The multidimensional nucleon structure

“…In the following, we will show results from the light-front constituent quark model (LFCQM) [29], which has been extensively applied to calculate form factors [30], TMDs [31][32][33][34] and GPDs [35][36][37][38], showing a typical accuracy of 30%. Since our purpose is simply to illustrate the multipole structure, we computed only the naive T-even contributions in this model.…”