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Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?

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arxiv 1701.04254 v3 pith:JZY7LU5H submitted 2017-01-16 hep-ph

Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?

classification hep-ph
keywords ellipticdistributionsgluoncollisionsflowrapidityscatteringagreement
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy $pA$ collisions by applying the double parton scattering mechanism. We compute the `elliptic flow' parameter $v_2$ as a function of the transverse momentum and rapidity, and find qualitative agreement with experimental observations. This shall encourage further developments with more rigorous studies of the elliptic gluon distributions and their applications in hard scattering processes in $pp$ and $pA$ collisions.

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