Pion-induced Drell-Yan process with polarized protons

ORAL

Abstract

Our calculations for all leading twist structure functions describing the pion induced Drell-Yan process will be presented. In this work the light-front constituent quark model, the spectator model, and available extractions from the experimental data are used as input for the non-perturbative transverse momentum dependent parton distribution functions (TMDs). These TMDs are evolved to the scale of COMPASS Drell-Yan measurements by implementing the TMD evolution at Next-to Leading Logarithmic precision for the first time for all asymmetries. Our results show compatibility with the first experimental information, help to interpret the data from ongoing experiments, and will allow to quantitatively assess the models in future when more precise data will become available.

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Authors

  • Saman Bastami

    Department of Physics, University of Connecticut

  • Leonard Gamberg

    Penn State Berks, Pennsylvania State University, Division of Science, Penn State Berks

  • Bakur Parsamyan

    Dipartimento di Fisica, Universitá degli Studi di Torino

  • Barbara Pasquini

    Dipartimento di Fisica, Universitá degli Studi di Pavia

  • Alexei Prokudin

    Penn State Berks and Jefferson Lab, Penn State Berks, Division of Science, Penn State Berks

  • Peter Schweitzer

    University of Connecticut, Department of Physics, University of Connecticut