Transverse Spin Effects in Future Drell-Yan Experiments
Jen-Chieh Peng
TL;DR
This paper reviews the current understanding and future plans for studying transverse momentum dependent parton distributions, especially Boer-Mulders and Sivers functions, through Drell-Yan experiments, highlighting their expected sign change from SIDIS.
Contribution
It provides a comprehensive overview of the status and future prospects of probing TMDs via Drell-Yan, emphasizing the sign change of key functions and upcoming experimental measurements.
Findings
Existing experiments constrain the signs of TMDs.
Boer-Mulders and Sivers functions are expected to change sign between SIDIS and Drell-Yan.
Future measurements aim to test these sign-change predictions.
Abstract
We review the current status and future prospect for probing the transverse momentum dependent (TMD) parton distributions using the Drell-Yan process. We focus on the Boer-Mulders and Sivers functions, which are expected to undergo a sign-change from semi-inclusive deep-inelastic scattering (SIDIS) to Drell-Yan process. The constraints of existing Drell-Yan and SIDIS experiments on the signs of these functions are discussed. Future Drell-Yan measurements for the TMDs are also presented.
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