Photoproduction of the f2 (1270) Meson Using the CLAS Detector

(CLAS Collaboration)

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Article number082002
JournalPhysical Review Letters
Issue number8
StatePublished - Feb 25 2021

ASJC Scopus subject areas

  • General Physics and Astronomy


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