Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12
Year: 2023
Type: article
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 sinΔϕ modulations in ep→e^{'}pπ^{+}X events, where Δϕ 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.
Source: Physical Review Letters
Authors: H. Avakian, T. B. Hayward, A. Kotzinian, W. R. Armstrong, H. Atac, C. Ayerbe Gayoso, L. Baashen, N. A. Baltzell, L. Barion, M. Bashkanov, M. Battaglieri, I. Bedlinskiy, B. Benkel, F. Benmokhtar, A. Bianconi, L. Biondo, A. S. Biselli, M. Bondi, S. Boiarinov, F. Bossù, K. T. Brinkman, W. J. Briscoe, W. K. Brooks, S. Bueltmann, D. Bulumulla, V. D. Burkert, R. Capobianco, D. S. Carman, J. C. Carvajal, A. Celentano, P. Chatagnon, V. Chesnokov, T. Chetry, G. Ciullo, P. L. Cole, M. Contalbrigo, G. Costantini, A. D’Angelo, N. Dashyan, R. De Vita, M. Defurne, A. Deur, S. Diehl, C. Dilks, C. Djalali, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, S. Fegan, A. Filippi, T. Forest, K. Gates, G. Gavalian, Y. Ghandilyan, D. I. Glazier, A. A. Golubenko, G. Gosta, R. W. Gothe, Y. Gotra, K. A. Griffioen, M. Guidal, H. Hakobyan, M. Hattawy, F. Hauenstein, D. Heddle, A. Hobart, M. Holtrop, C. E. Hyde, Y. Ilieva, D. G. Ireland, E. L. Isupov, H. S. Jo, R. Johnston, K. Joo, M. L. Kabir, D. Keller, M. Khachatryan, A. Khanal, A. Kim, W. Kim, V. Klimenko, A. Kripko, V. Kubarovsky, S. E. Kuhn, V. Lagerquist, L. Lanza, M. Leali, S. Lee, P. Lenisa, X. Li, I. J. D. MacGregor, D. Marchand, V. Mascagna, B. McKinnon, S. Migliorati, T. Mineeva, M. Mirazita, V. Mokeev, R. A. Montgomery, C. Munoz Camacho, P. Nadel-Turonski, P. Naidoo, K. Neupane, D. Nguyen, S. Niccolai, M. Nicol, G. Niculescu, M. Osipenko, P. Pandey, M. Paolone, L. L. Pappalardo, R. Paremuzyan, E. Pasyuk, S. J. Paul, W. Phelps, N. Pilleux, O. Pogorelko, M. Pokhrel, J. Poudel, J. W. Price, Y. Prok, B. A. Raue, T. Reed, J. Richards, M. Ripani, J. Ritman, P. Rossi, F. Sabatié, C. Salgado, A. Schmidt, Y. G. Sharabian, E. V. Shirokov, U. Shrestha, P. Simmerling, D. Sokhan, N. Sparveris, S. Stepanyan, I. I. Strakovsky, S. Strauch, J. A. Tan, N. Trotta, R. Tyson, M. Ungaro, S. Vallarino, L. Venturelli, H. Voskanyan, A. Vossen, E. Voutier, D. P. Watts, X. Wei, R. Wishart, M. H. Wood, N. Zachariou, Z. W. Zhao, M. Zurek
Institutions: Thomas Jefferson National Accelerator Facility, University of Connecticut, A. Alikhanyan National Laboratory, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Argonne National Laboratory, Temple University, William & Mary, Florida International University, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, University of York, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, Kurchatov Institute, Universidad Técnica Federico Santa María, Duquesne University, Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, University of Brescia, University of Messina, Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Fairfield University, Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers, Justus-Liebig-Universität Gießen, George Washington University, Old Dominion University, Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et de Physique des Particules, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Ohio University, Mississippi State University, University of Ferrara, Lamar University, University of Rome Tor Vergata, Duke University, Idaho State University, University of Glasgow, University of South Carolina, Christopher Newport University, University of New Hampshire, Kyungpook National University, Massachusetts Institute of Technology, University of Virginia, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, James Madison University, New Mexico State University, University of California, Riverside, California State University, Dominguez Hills, GSI Helmholtz Centre for Heavy Ion Research, Forschungszentrum Jülich, Norfolk State University, Canisius College
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Funders: National Science Foundation, U.S. Department of Energy, Strong, Istituto Nazionale di Fisica Nucleare Sezione di Padova, European Commission, National Research Foundation, National Research Foundation of Korea, Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Ministry of Science and Higher Education of the Russian Federation, Istituto Nazionale di Fisica Nucleare, Agencia Nacional de Investigación y Desarrollo, Horizon 2020 Framework Programme, Science and Technology Facilities Council, Thomas Jefferson National Accelerator Facility
Awards: MEDIUM ENERGY NUCLEAR PHYSICS EXPERIMENT AT JEFFERSON LAB., Q2 EVOLUTION OF QUADRUPOLE STRENGTH OF N DELTA (1232) TRANSITION, G141955430, G14744916, G1728142190, SIN INFORMACION, G222768804, G2263355576, G2702141073, Nuclear Physics Consolidated Grant 21-24 - University of York, G2988778103, G3111662533, The strong interaction at the frontier of knowledge: fundamental research and applications, G3518886221, G434337789, G4824140319, G5340680269, Shining a light on strangeness, Shining a light on strangeness, Transfer of Research Grant Funds (from ST/P004008/1 to ST/P003885/1), G7451223319, G7520763071, Nuclear Physics Consolidated Grant, Jefferson Lab project grant, G8462202600
OpenAlex ID: W4315645293