Journal article
Authors list: Avakian, H.; Hayward, T. B.; Kotzinian, A.; Armstrong, W. R.; Atac, H.; Gayoso, C. Ayerbe; Baashen, L.; Baltzell, N. A.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I.; Benkel, B.; Benmokhtar, F.; Bianconi, A.; Biondo, L.; Biselli, A. S.; Bondi, M.; Boiarinov, S.; Bossu, F.; Brinkman, K. T.; Briscoe, W. J.; Brooks, W. K.; Bueltmann, S.; Bulumulla, D.; Burkert, V. D.; Capobianco, R.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chesnokov, V.; Chetry, T.; Ciullo, G.; Cole, P. L.; Contalbrigo, M.; Costantini, G.; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Dilks, C.; Djalali, C.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Fegan, S.; Filippi, A.; Forest, T.; Gates, K.; Gavalian, G.; Ghandilyan, Y.; Glazier, D. I.; Golubenko, A. A.; Gosta, G.; Gothe, R. W.; Gotra, Y.; Griffioen, K. A.; Guidal, M.; Hakobyan, H.; Hattawy, M.; Hauenstein, F.; Heddle, D.; Hobart, A.; Holtrop, M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Isupov, E. L.; Jo, H. S.; Johnston, R.; Joo, K.; Kabir, M. L.; Keller, D.; Khachatryan, M.; Khanal, A.; Kim, A.; Kim, W.; Klimenko, V.; Kripko, A.; Kubarovsky, V.; Kuhn, S. E.; Lagerquist, V.; Lanza, L.; Leali, M.; Lee, S.; Lenisa, P.; Li, X.; MacGregor, I. J. D.; Marchand, D.; Mascagna, V.; McKinnon, B.; Migliorati, S.; Mineeva, T.; Mirazita, M.; Mokeev, V.; Montgomery, R. A.; Camacho, C. Munoz; Nadel-Turonski, P.; Naidoo, P.; Neupane, K.; Nguyen, D.; Niccolai, S.; Nicol, M.; Niculescu, G.; Osipenko, M.; Pandey, P.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Paul, S. J.; Phelps, W.; Pilleux, N.; Pogorelko, O.; Pokhrel, M.; Poudel, J.; Price, J. W.; Prok, Y.; Raue, B. A.; Reed, T.; Richards, J.; Ripani, M.; Ritman, J.; Rossi, P.; Sabatie, F.; Salgado, C.; Schmidt, A.; Sharabian, Y. G.; V. Shirokov, E.; Shrestha, U.; Simmerling, P.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Trotta, N.; Tyson, R.; Ungaro, M.; Vallarino, S.; Venturelli, L.; Voskanyan, H.; Vossen, A.; Voutier, E.; Watts, D. P.; Wei, X.; Wishart, R.; Wood, M. H.; Zachariou, N.; Zhao, Z. W.; Zurek, M.
Publication year: 2023
Journal: Physical Review Letters
Volume number: 130
Issue number: 2
ISSN: 0031-9007
eISSN: 1079-7114
DOI Link: https://doi.org/10.1103/PhysRevLett.130.022501
Publisher: American Physical Society
Abstract:
We report the first measurements of deep inelastic scattering spin-dependent azimuthal asymmetries in back-to-back dihadron electroproduction in the deep inelastic scattering process. In this reaction, two hadrons are produced in opposite hemispheres along the z axis in the virtual photon-target nucleon center -of-mass frame, with the first hadron produced in the current-fragmentation region and the second in the target-fragmentation region. The data were taken with longitudinally polarized electron beams of 10.2 and 10.6 GeV incident on an unpolarized liquid-hydrogen target using the CLAS12 spectrometer at Jefferson Lab. Observed nonzero sin Delta phi modulations in ep -> e0p pi thorn X events, where Delta phi is the difference of the azimuthal angles of the proton and pion in the virtual photon and target nucleon center-of-mass frame, indicate that correlations between the spin and transverse momenta of hadrons produced in the target-and current-fragmentation regions may be significant. The measured beam-spin asymmetries provide a first access in dihadron production to a previously unexplored leading-twist spin-and transverse-momentum-dependent fracture function. The fracture functions describe the hadronization of the target remnant after the hard scattering of a virtual photon off a quark in the target particle and provide a new avenue for studying nucleonic structure and hadronization.
Citation Styles
Harvard Citation style: Avakian, H., Hayward, T., Kotzinian, A., Armstrong, W., Atac, H., Gayoso, C., et al. (2023) Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12, Physical Review Letters, 130(2), Article 022501. https://doi.org/10.1103/PhysRevLett.130.022501
APA Citation style: Avakian, H., Hayward, T., Kotzinian, A., Armstrong, W., Atac, H., Gayoso, C., Baashen, L., Baltzell, N., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biondo, L., Biselli, A., Bondi, M., Boiarinov, S., ...Zurek, M. (2023). Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12. Physical Review Letters. 130(2), Article 022501. https://doi.org/10.1103/PhysRevLett.130.022501
Keywords
MONTE-CARLO GENERATOR
