Abstract
A more reliable treatment of transverse momentum-dependent physics and in particular transverse single-spin asymmetries is urgently required, e.g. for polarized pA physics including novel effects like color entanglement. We argue that the measurement of azimuthal angular correlations of photons and jets produced in pA collisions provides a direct access to the novel gluon distribution G(4) that ...
Abstract
A more reliable treatment of transverse momentum-dependent physics and in particular transverse single-spin asymmetries is urgently required, e.g. for polarized pA physics including novel effects like color entanglement. We argue that the measurement of azimuthal angular correlations of photons and jets produced in pA collisions provides a direct access to the novel gluon distribution G(4) that enters into many such processes, though practically it will be very challenging to probe this distribution experimentally as it is a 1/N-c(2)-suppressed effect.
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