Applications of the WW-type approximation to SIDIS

S. Bastami, H. Avakian, A. V. Efremov, A. Kotzinian, B. U. Musch, B. Parsamyan, A. Prokudin, M. Schlegel, G. Schnell, P. Schweitzer, K. Tezgin

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Abstract

We explore the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q2) terms in the Wandzura-Wilczek-type (WW-type) approximation, which consists in systematically assuming that qgq ¯ -correlators are much smaller than qq ¯ -correlators. Under the applicability of WW-type approximations, certain relations among transverse momentum dependent parton distribution functions (TMDs) and fragmentation functions (FFs) occur which are used to approximate SIDIS cross-section in terms of a smaller subset of TMDs and FFs. We discuss the applicability of the WW-type approximations on the basis of available data.

Original languageEnglish (US)
Article number211
JournalProceedings of Science
Volume352
DOIs
StatePublished - 2019
Event27th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2019 - Torino, Italy
Duration: Apr 8 2019Apr 12 2019

All Science Journal Classification (ASJC) codes

  • General

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    Bastami, S., Avakian, H., Efremov, A. V., Kotzinian, A., Musch, B. U., Parsamyan, B., Prokudin, A., Schlegel, M., Schnell, G., Schweitzer, P., & Tezgin, K. (2019). Applications of the WW-type approximation to SIDIS. Proceedings of Science, 352, [211]. https://doi.org/10.22323/1.352.0211