A multidimensional study of the structure function ratio $\sigma_{LT'}/\sigma_{0}$ from hard exclusive $\pi^+$ electro-production off protons in the GPD regime
Abstract
A multidimensional extraction of the structure function ratio from the hard exclusive reaction above the resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam on a liquid-hydrogen target and the CLAS12 spectrometer at Jefferson Lab. The measurements focus on the very forward regime ( 1) with a wide kinematic range of in the valence regime (0.17 0.55), and virtualities ranging from 1.5 GeV up to 6 GeV. The results and their comparison to theoretical models based on Generalized Parton Distributions demonstrate the sensitivity to chiral-odd GPDs and the directly related tensor charge of the nucleon. In addition, the data is compared to an extension of a Regge formalism at high photon virtualities. It was found that the Regge model provides a better description at low , while the GPD model is more appropriate at high .
Keywords
Cite
@article{arxiv.2210.14557,
title = {A multidimensional study of the structure function ratio $\sigma_{LT'}/\sigma_{0}$ from hard exclusive $\pi^+$ electro-production off protons in the GPD regime},
author = {S. Diehl and A. Kim and K. Joo and P. Achenbach and Z. Akbar and M. J. Amaryan and H. Atac and H. Avagyan and C. Ayerbe Gayoso and L. Baashen and L. Barion and M. Bashkanov and M. Battaglieri and I. Bedlinskiy and B. Benkel and F. Benmokhtar and A. Bianconi and A. S. Biselli and M. Bondi and W. A. Booth and F. Bossu and S. Boiarinov and K. -Th. Brinkmann and W. J. Briscoe and S. Bueltmann and D. Bulumulla and V. D. Burkert and D. S. Carman and A. Celentano and P. Chatagnon and V. Chesnokov and T. Chetry and G. Ciullo and G. Clash and P. L. Cole and M. Contalbrigo and G. Costantini and A. D'Angelo and N. Dashyan and R. De Vita and M. Defurne and A. Deur and C. Djalali and R. Dupre and H. Egiyan and M. Ehrhart and A. El Alaoui and L. El Fassi and L. Elouadrhiri and S. Fegan and A. Filippi and G. Gavalian and Y. Ghandilyan and G. P. Gilfoyle and D. I. Glazier and A. A. Golubenko and G. Gosta and R. W. Gothe and Y. Gotra and K. A. Grifoen and M. Guidal and K. Hafdi and H. Hakobyan and M. Hattawy and T. B. Hayward and D. Heddle and A. Hobart and M. Holtrop and Y. Ilieva and D. G. Ireland and E. L. Isupov and H. S. Jo and M. Khachatryan and A. Khanal and W. Kim and A. Kripko and V. Kubarovsky and V. Lagerquist and J. -M. Laget and L. Lanza and M. Leali and S. Lee and P. Lenisa and X. Li and K. Livingston and I . J. D. MacGregor and D. Marchand and V. Mascagna and B. McKinnon and Z. E. Meziani and S. Migliorati and T. Mineeva and M. Mirazita and V. Mokeev and Esteban Molina and R. A. Montgomery and C. Munoz Camacho and P. Nadel-Turonski and P. Naidoo and K. Neupane and S. Niccolai and M. Nicol and G. Niculescu and M. Osipenko and M. Ouillon and P. Pandey and M. Paolone and L. L. Pappalardo and R. Paremuzyan and E. Pasyuk and S. J. Paul and W. Phelps and N. Pilleux and M. Pokhrel and J. Poudel and J. W. Price and Y. Prok and Trevor Reed and J. Richards and M. Ripani and J. Ritman and P. Rossi and F. Sabatie and C. Salgado and S. Schadmand and A. Schmidt and Y. Sharabian and E. V. Shirokov and U. Shrestha and P. Simmerling and D. Sokhan and N. Sparveris and M. Spreafco and S. Stepanyan and I. I. Strakovsky and S. Strauch and J. A. Tan and N. Trotta and M. Turisini and R. Tyson and M. Ungaro and S. Vallarino and L. Venturelli and H. Voskanyan and E. Voutier and D. P. Watts and X. Wei and R. Williams and R. Wishart and M. H. Wood and N. Zachariou and J. Zhang and Z. W. Zhao and M. Zurek},
journal= {arXiv preprint arXiv:2210.14557},
year = {2023}
}
Comments
arXiv admin note: text overlap with arXiv:2007.15677