Photoproduction of two charged pions off protons in the resonance region
DOI
10.1103/PhysRevC.111.035203
Document Type
Journal Article
Publication Date
3-1-2025
Publication Title
Physical Review C
Volume
111
Issue
3
ISSN
24699985
Abstract
Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The total and differential cross sections and spin-density matrix elements are presented for the isobars pρ0(770), Δ(1232)++π-, and Δ(1232)0π+. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions of Nρ(770) decays for most known N∗ and Δ∗ resonances. For the first time, the Nρ branching ratios are obtained here from an event-based likelihood to γp→π+π-p.
Open Access
Green Accepted
Preprint
Repository Citation
Sarantsev, A., Klempt, E., Nikonov, K., Achenbach, P., Burkert, V., Crede, V., Mokeev, V., Alvarado, J., Amaryan, M., Atac, H., Baashen, L., Baltzell, N., Barion, L., Bashkanov, M., Battaglieri, M., Benkel, B., & Benmokhtar, F. (2025). Photoproduction of two charged pions off protons in the resonance region. Physical Review C, 111 (3). https://doi.org/10.1103/PhysRevC.111.035203