Partial wave analysis of the reaction gamma p -> p omega and the search for nucleon resonances

Williams, M; Applegate D.; Bellis M.; Meyer, CA; Adhikari, KP; Anghinolfi, M; Baghdasaryan, H; Ball, J.; Battaglieri, M.; Bedlinskiy, I.; Berman, BL; Biselli, AS; Briscoe, WJ; Brooks, WK; Burkert, VD; et. al.

Abstract

An event-based partial wave analysis (PWA) of the reaction ?p?p? has been performed on a high-statistics dataset obtained using the CLAS at Jefferson Lab for center-of-mass energies from threshold up to 2.4 GeV. This analysis benefits from access to the world's first high-precision spin-density matrix element measurements, available to the event-based PWA through the decay distribution of ??p+p-p0. The data confirm the dominance of the t-channel p0 exchange amplitude in the forward direction. The dominant resonance contributions are consistent with the previously identified states F15(1680) and D13(1700) near threshold, as well as the G17(2190) at higher energies. Suggestive evidence for the presence of a JP=5/2+ state around 2 GeV, a "missing" state, has also been found. Evidence for other states is inconclusive. © 2009 The American Physical Society.

Más información

Título según WOS: Partial wave analysis of the reaction gamma p -> p omega and the search for nucleon resonances
Título según SCOPUS: Partial wave analysis of the reaction ?p?p? and the search for nucleon resonances
Título de la Revista: PHYSICAL REVIEW C
Volumen: 80
Número: 6
Editorial: AMER PHYSICAL SOC
Fecha de publicación: 2009
Idioma: English
URL: http://link.aps.org/doi/10.1103/PhysRevC.80.065209
DOI:

10.1103/PhysRevC.80.065209

Notas: ISI, SCOPUS