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Volume 352 - XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019) - Working Group 6: Spin and 3D Structure
Comments on the perturbative and non-perturbative contributions in unpolarized SIDIS.
J.O. Gonzalez H.
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Pre-published on: 2019 September 19
Published on: 2019 October 04
We address the large suppression of the unpolarized SIDIS cross section in the small transverse momentum region, due to the $O(\alpha_{\rm s})$ contributions in the $C$-coefficients needed for a consistent matching to the large transverse momentum region, at this order in the CSS factorization scheme. We will show that with a TMD analysis using the type of cuts as those in recent extractions cannot describe the data at this order.
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