Document Type
Article
Abstract
High precision measurements of the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering (SIDIS) from the proton have been performed using a 10.6 GeV incident electron beam and the CLAS12 spectrometer at Jefferson Lab. We report here a high precision multidimensional study of single πþ SIDIS data over a large kinematic range in Bjorken x, fractional energy, and transverse momentum of the hadron as well as photon virtualities Q2 ranging from 1–7 GeV2. In particular, the structure function ratio sinϕ LU/ FUU has been determined, where sinϕ LU is a twist-3 quantity that can reveal novel aspects of emergent hadron mass and quark-gluon correlations within the nucleon. The data’s impact on the evolving understanding of the underlying reaction mechanisms and their kinematic variation is explored using theoretical models for the different contributing transverse momentum dependent parton distribution functions.
Digital Object Identifier (DOI)
Publication Info
Published in Physcal Review Letters, Volume 128, Issue 6, 2022.
Rights
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
APA Citation
Diehl, S., Kim, A., Angelini, G., Joo, K., Adhikari, S., M Amaryan, Arratia, M., H Atac, Avakian, H., C Ayerbe Gayoso, Baltzell, N. A., L Barion, S Bastami, M Battaglieri, I Bedlinskiy, F Benmokhtar, Bianconi, A., Biselli, A. S., Bondi, M., & F Bossù. (2022). Multidimensional, High Precision Measurements of Beam Single Spin Asymmetries in Semi-inclusive π+ Electroproduction off Protons in the Valence Region. Physical Review Letters, 128(6). https://doi.org/10.1103/physrevlett.128.062005