Mar 23 – 27, 2020
Brooklyn, NY
US/Eastern timezone

Global analysis of SSAs in SIDIS, Drell-Yan, e+e- annihilation, and proton-proton collisions

Mar 25, 2020, 2:30 PM
20m
Brooklyn, NY

Brooklyn, NY

333 Adams Street, Brooklyn, New York 11201, USA
Contributed Talk Spin Physics Spin Physics

Speaker

Daniel Pitonyak (Lebanon Valley College)

Description

The analysis of single transverse-spin asymmetries (SSAs) gives us tremendous insight into the internal structure of hadrons. For example, the Sivers and Collins effects in semi-inclusive deep-inelastic scattering (SIDIS), Sivers effect in Drell-Yan, and the Collins effect in electron-positron annihilation have been widely investigated over many years in order to perform 3D momentum-space tomography. In addition, observables like $A_N$ in proton-proton collisions are of interest due to their sensitivity to quark-gluon correlations. In this talk I will report on the first global fit of SSA data from SIDIS, Drell-Yan, $e^+e^−$ annihilation into hadron pairs, and proton-proton collisions. I will discuss the results of our analysis, including the extraction of a unique set of universal non-perturbative functions that describe all observed SSAs, and also explore avenues for future research.

Primary author

Daniel Pitonyak (Lebanon Valley College)

Co-authors

Justin Cammarota (The College of William and Mary) Leonard Gamberg (Penn State) Prof. Zhongbo Kang (University of California Los Angeles) Joshua Miller (Lebanon Valley College) Alexei Prokudin (Penn State Berks) nobuo sato (Jefferson Lab)

Presentation materials

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