TY - JOUR

T1 - Final state interactions and the transverse structure of the pion using non-perturbative eikonal methods

AU - Gamberg, Leonard

AU - Schlegel, Marc

N1 - Funding Information:
We thank D. Boer, S. Brodsky, M. Burkardt, H. Fried, G. Goldstein, S. Liuti, A. Metz, P.J. Mulders, J.-W. Qiu, O. Teryaev, and H. Weigel for useful discussions. L.G. is grateful for support from G. Miller and the Institute For Nuclear Theory, University of Washington where part of this work was undertaken. L.G. acknowledges support from U.S. Department of Energy under contract DE-FG02-07ER41460 . Authored by Jefferson Science Associates, LLC under U.S. DOE contract No. DE-AC05-06OR23177 . The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes.

PY - 2010/2/22

Y1 - 2010/2/22

N2 - In the factorized picture of semi-inclusive hadronic processes the naive time-reversal odd parton distributions exist by virtue of the gauge link which renders it color gauge invariant. The link characterizes the dynamical effect of initial/final-state interactions of the active parton due soft gluon exchanges with the target remnant. Though these interactions are non-perturbative, studies of final-state interaction have been approximated by perturbative one-gluon approximation in Abelian models. We include higher-order gluonic contributions from the gauge link by applying non-perturbative eikonal methods incorporating color degrees of freedom in a calculation of the Boer-Mulders function of the pion. Using this framework we explore under what conditions the Boer-Mulders function can be described in terms of factorization of final state interactions and a spatial distribution in impact parameter space.

AB - In the factorized picture of semi-inclusive hadronic processes the naive time-reversal odd parton distributions exist by virtue of the gauge link which renders it color gauge invariant. The link characterizes the dynamical effect of initial/final-state interactions of the active parton due soft gluon exchanges with the target remnant. Though these interactions are non-perturbative, studies of final-state interaction have been approximated by perturbative one-gluon approximation in Abelian models. We include higher-order gluonic contributions from the gauge link by applying non-perturbative eikonal methods incorporating color degrees of freedom in a calculation of the Boer-Mulders function of the pion. Using this framework we explore under what conditions the Boer-Mulders function can be described in terms of factorization of final state interactions and a spatial distribution in impact parameter space.

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U2 - 10.1016/j.physletb.2009.12.067

DO - 10.1016/j.physletb.2009.12.067

M3 - Article

AN - SCOPUS:75849129315

SN - 0370-2693

VL - 685

SP - 95

EP - 103

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1

ER -