Photoproduction of the f(2)(1270) Meson Using the CLAS Detector

Alaoui, A. El; Fassi, L. El; Griffioen K.; Hakobyan, Hayk; Hyde C.; Stepanyan, S. S.; CLAS Collaboration

Abstract

The quark structure of the f2(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq¯) resonance with quantum numbers JPC=2++. Recently, it was proposed that the f2(1270) is a molecular state made from the attractive interaction of two ρ mesons. Such a state would be expected to decay strongly to final states with charged pions due to the dominant decay ρ→π+π-, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp→π0π0p, using the CEBAF Large Acceptance Spectrometer detector at Jefferson Lab for incident beam energies between 3.6 and 5.4 GeV. Differential cross sections, dσ/dt, for f2(1270) photoproduction are extracted with good precision due to low backgrounds and are compared to theoretical calculations.

Más información

Título según WOS: Photoproduction of the f(2)(1270) Meson Using the CLAS Detector
Título según SCOPUS: Photoproduction of the f2 (1270) Meson Using the CLAS Detector
Título de la Revista: Physical Review Letters
Volumen: 126
Número: 8
Editorial: American Physical Society
Fecha de publicación: 2021
Idioma: English
DOI:

10.1103/PhysRevLett.126.082002

Notas: ISI, SCOPUS