A new Pomeron-Odderon interference term in the hybrid CGC framework yields a percent-level transverse single spin asymmetry in forward pA collisions, with a characteristic sign-changing node at the saturation scale.
Partonic Pole Matrix Elements for Fragmentation
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abstract
A model-independent analysis of collinear three-parton correlation functions for fragmentation is performed. By investigating their support properties it is shown, in particular, that the so-called partonic pole matrix elements vanish. This sheds new light on the understanding of transverse single spin asymmetries in various hard semi-inclusive reactions. Moreover, it gives additional strong evidence for the universality of transverse-momentum-dependent fragmentation functions.
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Single spin asymmetry in forward $pA$ collisions from Pomeron-Odderon interference
A new Pomeron-Odderon interference term in the hybrid CGC framework yields a percent-level transverse single spin asymmetry in forward pA collisions, with a characteristic sign-changing node at the saturation scale.