Measurements of $γ_v p \to π^+ π^- p'$ Cross Sections with the CLAS Detector for $Q^{2}$ from 2.0--5.0~GeV$^{2}$ and $W$ from 1.400--2.125~GeV
Year: 2026
Type: preprint
Abstract: Observables in the electroproduction of the $π^+π^-p$ reaction channel off the proton that are sensitive to the polarization of the virtual photon are presented for the first time in addition to the extraction of the nine single-differential and fully integrated cross sections within the kinematics area of 2.0~GeV$^2 < Q^2 < 5.0$~GeV$^2$ and 1.400~GeV $< W < 2.125$~GeV measured with the CLAS detector in Hall B at Jefferson Lab. The extraction of the unpolarized cross sections has been considerably improved in comparison with previously published results from this same dataset, offering finer binning over the five-dimensional hadronic reaction phase space, and including essential advances in the acceptance evaluation by implementing a new technique to stabilize the cross section extraction and minimize the systematic uncertainty associated with the simulation statistics. These improvements are of particular importance for the extraction of the $γ_v p N^*$ electrocouplings from these data.
Source: arXiv (Cornell University)
Authors: Trivedi, A., Gothe, R. W., Phelps, E., Mokeev, V. I., Carman, D. S., Achenbach, P., Alvarado, J. S., Amaryan, M. J., Baltzell, N. A., Barion, L., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bondi, M., Bossu, F., Brinkmann, K. -Th., Briscoe, W. J., Bryce, J., Cao, T., Chatagnon, P., Chinchay, H., Ciullo, G., Cline, E. W., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., Deur, A., Diehl, S., Djalali, C., Dupre, R., Egiyan, H., Alaoui, A. El, Fassi, L. El, Farooq, M., Fegan, S., Fernando, I. P., Ferrand, E., Filippi, A., Gates, K., Glazier, D. I., Gualtieri, B., Hakobyan, H., Hayward, T. B., Heddle, D., Hoballah, M., Holtrop, M., Ilieva, Y., Ireland, D. G., Isupov, E. L., Khandaker, M., Klein, F. J., Klimenko, V., Kripko, A., Kubarovsky, V., Lama, C., Lanza, L., Lenisa, P., Li, X., Martiryan, D., Mascagna, V., Mehta, A., Mirazita, M., Cardenas, E. F. Molina, Camacho, C. Munoz, Nadel-Turonski, P., Nagorna, T., Neupane, K., Niccolai, S., Niculescu, G., Osipenko, M., Osmond, A., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Paudel, C., Paul, S. J., Phelps, W., Polizzi, L., Prok, Y., Radic, A., Ripani, M., Ronayette, M., Rusova, A. A., Schadmand, S., Schmidt, A., Schumacher, R. A., Shrestha, S., Sidoretti, E., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tenorio, M., Codjo, F. Touchte, Tyson, R., Ungaro, M., Vallarino, S., Velasquez, C., Venturelli, L., Voskanyan, H., Voutier, E., Wang, Y., Weerasinghe, U., Wei, X., Xu, L., Xu, Z., Zhao, Z. W., Ziegler, V.
Institutions: University of South Carolina, Thomas Jefferson National Accelerator Facility, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de Physique Nucléaire et de Physique des Particules, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Old Dominion University, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, Duquesne University, Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, University of Brescia, Fairfield University, Rensselaer Polytechnic Institute, Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers, Justus-Liebig-Universität Gießen, George Washington University, Florida State University, University of Rome Tor Vergata, A. Alikhanyan National Laboratory, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Connecticut, Ohio University, Universidad Técnica Federico Santa María, University of York, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Glasgow, Christopher Newport University, Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Argonne National Laboratory, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Massachusetts Institute of Technology, Temple University, GSI Helmholtz Centre for Heavy Ion Research, Carnegie Mellon University, Duke University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, University of South Carolina, Scottish Universities Physics Alliance, National Research Foundation, Deutsche Forschungsgemeinschaft, National Research Foundation of Korea, Centre National de la Recherche Scientifique, Istituto Nazionale di Fisica Nucleare, Lomonosov Moscow State University, Office of Science, Science and Technology Facilities Council, Comisión Nacional de Investigación Científica y Tecnológica, Nuclear Physics, Thomas Jefferson National Accelerator Facility
Awards: G2562462929, G4531151473
OpenAlex ID: W7167806750