Measurement of direct f0(980) photoproduction on the proton

Battaglieri, M.; De Vita, R.; Anghinolfi, M; Osipenko, M.; Ricco, G; Ripani, M.; Taiuti, M.; Szczepaniak, A. P.; El Fassi, L.; Hafidi, K; Ball J.P.; Collins P.; Dugger, M.; Pasyuk, E.; Ritchie B.G.; et. al.

Keywords: waves, protons, photoproduction, wave, detectors, analysis, cross, shear, meson, sections, differential, clas, and, Partial, P-, S-waves

Abstract

We report on the results of the first measurement of exclusive f0(980) meson photoproduction on protons for Eγ=3.0-3.8GeV and -t=0.4-1.0GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the π+π- channel by performing a partial wave analysis of the reaction γp→pπ+π-. Clear evidence of the f0(980) meson was found in the interference between P and S waves at Mπ+π-∼1GeV. The S-wave differential cross section integrated in the mass range of the f0(980) was found to be a factor of about 50 smaller than the cross section for the ρ meson. This is the first time the f0(980) meson has been measured in a photoproduction experiment. © 2009 The American Physical Society.

Más información

Título según SCOPUS: Measurement of direct f0(980) photoproduction on the proton
Título de la Revista: PHYSICAL REVIEW LETTERS
Volumen: 102
Número: 10
Editorial: AMER PHYSICAL SOC
Fecha de publicación: 2009
Idioma: eng
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-63249126580&partnerID=q2rCbXpz
DOI:

10.1103/PhysRevLett.102.102001

Notas: SCOPUS