کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1851906 1528880 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phases of augmented hadronic light-front wave functions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Phases of augmented hadronic light-front wave functions
چکیده انگلیسی

It is an important question whether the final/initial state gluonic interactions which lead to naive-time-reversal-odd single-spin asymmetries and diffraction at leading twist can be associated in a definite way with the light-front wave function hadronic eigensolutions of QCD. We use light-front time-ordered perturbation theory at the lowest nontrivial order to obtain augmented light-front wave functions which contain an imaginary phase which depends on the choice of advanced or retarded boundary condition for the gauge potential in light-cone gauge. We apply this formalism to the wave functions of the valence Fock states of nucleons and pions, and show how this illuminates the factorization properties of naive-time-reversal-odd transverse momentum dependent observables which arise from rescattering. In particular, one calculates the identical leading-twist Sivers function from the overlap of augmented light-front wave functions that one obtains from explicit calculations of the single-spin asymmetry in semi-inclusive deep inelastic lepton–polarized nucleon scattering where the required phases come from the final-state rescattering of the struck quark with the nucleon spectators.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 687, Issues 4–5, 19 April 2010, Pages 327–330
نویسندگان
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