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The present and future of QCD

https://doi.org/10.1016/j.nuclphysa.2024.122874

Achenbach, P. ; Adhikari, D. ; Afanasev, A. ; Afzal, F. ; Aidala, C.A. ; Al-bataineh, A. ; Almaalol, D.K. ; Amaryan, M. ; Androić, D. ; Armstrong, W.R. ; et al ( July 2024 , Nuclear Physics A)

Free, publicly-accessible full text available July 1, 2025
First Measurement of Hard Exclusive π−Δ++ Electroproduction Beam-Spin Asymmetries off the Proton

https://doi.org/10.1103/PhysRevLett.131.021901

Diehl, S. ; Trotta, N. ; Joo, K. ; Achenbach, P. ; Akbar, Z. ; Armstrong, W. R. ; Atac, H. ; Avakian, H. ; Baashen, L. ; Baltzell, N. A. ; et al ( July 2023 , Physical Review Letters)

Free, publicly-accessible full text available July 1, 2024
Semi-Inclusive Deep Inelastic Scattering in Wandzura-Wilczek-type approximation

https://doi.org/10.1007/JHEP06(2019)007

Bastami, S ; Avakian, H ; Efremov, A V ; Kotzinian, A ; Musch, B U ; Parsamyan, B ; Prokudin, A ; Schlegel, M ; Schnell, G ; Schweitzer, P ; et al ( June 2019 , The journal of high energy physics)

We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q^2) terms in the Wandzura-Wilczek-type approximation, which consists in systematically assuming that qgqbar-terms are much smaller than qqbar -correlators. We compute all twist-2 and twist-3 structure functions and the corresponding asymmetries, and discuss the applicability of the Wandzura-Wilczek-type approximations on the basis of available data. We make predictions that can be tested by data from COMPASS, HERMES, Jefferson Lab, and the future Electron-Ion Collider. The results of this paper can be readily used for phenomenology and for event generators, and will help to improve the description of semi-inclusive deep-inelastic processes in terms of transverse momentum dependent parton distribution functions and fragmentation functions beyond the leading twist.
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First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions

https://doi.org/10.1103/PhysRevLett.130.142301

Chetry, T. ; El Fassi, L. ; Brooks, W. K. ; Dupré, R. ; El Alaoui, A. ; Hafidi, K. ; Achenbach, P. ; Adhikari, K. P. ; Akbar, Z. ; Armstrong, W. R. ; et al ( April 2023 , Physical Review Letters)
First CLAS12 Measurement of Deeply Virtual Compton Scattering Beam-Spin Asymmetries in the Extended Valence Region

https://doi.org/10.1103/PhysRevLett.130.211902

Christiaens, G. ; Defurne, M. ; Sokhan, D. ; Achenbach, P. ; Akbar, Z. ; Amaryan, M. J. ; Atac, H. ; Avakian, H. ; Gayoso, C. Ayerbe ; Baashen, L. ; et al ( May 2023 , Physical Review Letters)

Free, publicly-accessible full text available May 1, 2024
Exclusive π− electroproduction off the neutron in deuterium in the resonance region

https://doi.org/10.1103/PhysRevC.107.015201

Tian, Y. ; Gothe, R. W. ; Mokeev, V. I. ; Hollis, G. ; Amaryan, M. J. ; Armstrong, W. R. ; Atac, H. ; Avakian, H. ; Barion, L. ; Battaglieri, M. ; et al ( January 2023 , Physical Review C)

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Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12

https://doi.org/10.1103/PhysRevLett.130.022501

Avakian, H. ; Hayward, T. B. ; Kotzinian, A. ; Armstrong, W. R. ; Atac, H. ; Ayerbe Gayoso, C. ; Baashen, L. ; Baltzell, N. A. ; Barion, L. ; Bashkanov, M. ; et al ( January 2023 , Physical Review Letters)

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Beam-spin asymmetry Σ for Σ− hyperon photoproduction off the neutron

https://doi.org/10.1016/j.physletb.2022.136985

Zachariou, N. ; Munevar, E. ; Berman, B.L. ; Bydžovský, P. ; Cieplý, A. ; Feldman, G. ; Ilieva, Y. ; Nadel-Turonski, P. ; Skoupil, D. ; Sarantsev, A.V. ; et al ( April 2022 , Physics Letters B)

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Beam-recoil transferred polarization in K+Y electroproduction in the nucleon resonance region with CLAS12

https://doi.org/10.1103/PhysRevC.105.065201

Carman, D. S. ; D'Angelo, A. ; Lanza, L. ; Mokeev, V. I. ; Adhikari, K. P. ; Amaryan, M. J. ; Armstrong, W. R. ; Atac, H. ; Avakian, H. ; Ayerbe Gayoso, C. ; et al ( June 2022 , Physical Review C)

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Polarized structure function σLT′ from π0p electroproduction data in the resonance region at 0.4GeV2Q21.0GeV2

https://doi.org/10.1103/PhysRevC.105.L022201

Isupov, E. L. ; Burkert, V. D. ; Golubenko, A. A. ; Joo, K. ; Markov, N. S. ; Mokeev, V. I. ; Smith, L. C. ; Armstrong, W. R. ; Atac, H. ; Avakian, H. ; et al ( February 2022 , Physical Review C)

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