The transverse spin structure of the pion at short distances

Research paper by Markus Diehl, Lech Szymanowski

Indexed on: 07 May '10Published on: 07 May '10Published in: High Energy Physics - Phenomenology


We study the form factors of the quark tensor currents in the pion at large squared momentum transfer Q^2. It turns out that certain form factors can be evaluated using collinear factorization, whereas others receive important contributions from the end-point regions of the longitudinal quark momenta in the pion. We derive simple analytic expressions for the dominant terms at high Q^2 and illustrate them numerically.