Article ISI SCOPUS
Physical Review C  (2025)

Measurement of single-and double-polarization observables in the photoproduction of π plus π- meson pairs off the proton using CLAS at Jefferson Laboratory

Roy, P; Cao S.; Crede V.; Klempt, E; Nikonov V.A.; Sarantsev A.V.; Burkert V.D.; Mokeev V.; Achenbach, P; Alvarado, JS; Armstrong W.R.; Atac H.; Avakian H.; Baltzell N.A.; Barion L.; et. al.

Abstract

The photoproduction of ?+?? meson pairs off the proton has been studied in the reaction ? p? p?+?? using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target (FROST) in Hall B at the Thomas Jefferson National Accelerator Facility. For the first time, the beam and target asymmetries, Is,c and Px,y have been measured along with the beam-target double-polarization observables, Ps,c x,y using a transversely polarized target with center-of-mass energies ranging from 1.51 GeV up to 2.04 GeV. These data and additional ?? photoproduction observables from CLAS and experiments elsewhere were included in a partial-wave analysis within the Bonn-Gatchina framework. Significant contributions from s-channel resonance production are observed in addition to t-channel exchange processes. The data indicate significant contributions from N* and ?* resonances in the third and fourth resonance regions. © 2025 American Physical Society

Más información

Título según WOS: Measurement of single-and double-polarization observables in the photoproduction of π plus π- meson pairs off the proton using CLAS at Jefferson Laboratory
Título según SCOPUS: Measurement of single- and double-polarization observables in the photoproduction of ?+?? meson pairs off the proton using CLAS at Jefferson Laboratory
Título de la Revista: Physical Review C
Volumen: 112
Número: 3
Editorial: American Physical Society
Fecha de publicación: 2025
Idioma: English
DOI:

10.1103/bddq-9qlq
Notas: ISI, SCOPUS