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arXiv · 1912.08878

Rapidity loss, spin and angular asymmetries in scattering of a quark from color field of a proton (nucleus)

Jamal Jalilian-Marian
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Abstract

We calculate the helicity amplitudes for scattering of a quark from both large and small $x$ gluons of a target proton or nucleus using spinor helicity formalism. We show that scattering from large $x$ gluons of the target results in non-zero spin asymmetry at intermediate $p_t$ as well as rapidity loss of the projectile quark. We comment on how this can also generate angular asymmetries in particle production in high energy collisions.

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Jamal Jalilian-Marian. 2019-12-18. Rapidity loss, spin and angular asymmetries in scattering of a quark from color field of a proton (nucleus). https://doi.org/10.1103/physrevd.102.014008

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