Measurement of the Differential Cross Section for the Reaction gamma n -> pi(-)p from Deuterium

Chen, W; Mibe, T; Dutta D.; Gao, H; Laget, JM; Mirazita, M; Rossi, P; Stepanyan, S.; Strakovsky, II; Amaryan, MJ; Anghinolfi, M; Bagdasaryan, H; Battaglieri, M.; Bellis M.; Berman, BL; et. al.

Abstract

We report a measurement of the differential cross section for the ?n?p-p process from the CLAS detector at Jefferson Laboratory in Hall B for photon energies between 1.0 and 3.5GeV and pion center-of-mass (c.m.) angles (?c.m.) between 50°and 115°. We confirm a previous indication of a broad enhancement around a c.m. energy (s) of 2.1GeV at ?c.m.=90°in the scaled differential cross section s7dsdt and a rapid falloff in a center-of-mass energy region of about 400MeV following the enhancement. Our data show an angular dependence of this enhancement as the suggested scaling region is approached for ?c.m. from 70°to 105°. © 2009 The American Physical Society.

Más información

Título según WOS: Measurement of the Differential Cross Section for the Reaction gamma n -> pi(-)p from Deuterium
Título según SCOPUS: Measurement of the differential cross section for the reaction ?n??-p from deuterium
Título de la Revista: PHYSICAL REVIEW LETTERS
Volumen: 103
Número: 1
Editorial: AMER PHYSICAL SOC
Fecha de publicación: 2009
Idioma: English
URL: http://link.aps.org/doi/10.1103/PhysRevLett.103.012301
DOI:

10.1103/PhysRevLett.103.012301

Notas: ISI, SCOPUS