[Theory-seminars] Theory seminar TODAY - Maurizio Abele

[Patrick Barry]

Hello All,

Many apologies for not sending a reminder for the seminar yesterday.  There will indeed be a seminar today, Monday November 29th at 1pm to be given (virtually) by Maurizio Abele of Tübingen University on https://jlab.bluejeans.com/319089525/6769<https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab.bluejeans.com_319089525_6769&d=DwMFAw&c=CJqEzB1piLOyyvZjb8YUQw&r=AIMSQQ81YDyrZuJNGks2qw&m=x29E57UMx34WjoS-yLXZS2qNLfa_SlSw0J1QuFd6u80&s=YZDnEovFtz29HvbN26a0A0rgHtJ1M_tEUQ7YAbyNdgA&e=>. Please see below for Maurizio's title and abstract.

Theory Seminar
Monday November 29th, 1:00PM

Maurizio Abele (Tübingen University) will speak about "Higher-order QCD corrections to SIDIS"

Abstract: We determine approximate next-to-next-to-leading order (NNLO) corrections to unpolarized and polarized semi-inclusive DIS. They are derived using the threshold resummation formalism, which we fully develop to next-to-next-to-leading logarithmic (NNLL) accuracy, including the two-loop hard factor. The approximate NNLO terms are obtained by expansion of the resummed expression. They include all terms in Mellin space that are logarithmically enhanced at threshold, or that are constant. In terms of the customary SIDIS variables $x$ and $z$ they include all double distributions (that is, ``plus'' distributions and $\delta$-functions) in the partonic variables. We also investigate corrections that are suppressed at threshold and we determine the dominant terms among these. Our numerical estimates suggest much significance of the approximate NNLO terms, along with a reduction in scale dependence.

Best,
Astrid, Colin & Patrick


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