Title
Photoproduction of the F2(1270) Meson Using the CLAS Detector
DOI
10.1103/PhysRevLett.126.082002
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 J PC = 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 gamma p -> π+ π− p, 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.
Document Type
Article
Publication Date
2-21-2021
Publisher Statement
Copyright © 2021, APS Physics.
Recommended Citation
Carver, M., A. Celentano, K. Hicks, L. Marsicano, V. Mathieu, A. Pilloni, K. P. Adhikari, G. P. Gilfoyle, et al. “Photoproduction of the F2(1270) Meson Using the CLAS Detector.” Physical Review Letters 126, no. 8 (February 25, 2021): 082002. https://doi.org/10.1103/PhysRevLett.126.082002.