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Title Photoproduction of the f2(1270)meson using the CLAS detector
Authors Miranda Carver,Andrea Celentano,Kenneth Hicks,Luca Marsicano,Vincent Mathieu,Alessandro Pilloni
JLAB number JLAB-PHY-20-3279
LANL number arXiv:2010.16006
Other number DOE/OR/23177-5125
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)

Compiled for Physical Review Letters
Publication Abstract: The quark structure of the f2(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq-bar) 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 r-mesons. Such a state would be expected to decay strongly to final states with charged pions, due to the dominant decay r -> p+p-, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction gr -> p+p-r, using the CLAS detector at Jefferson Lab for incident beam energies between 3.6-5.4 GeV. Differential cross sections, ds=dt, for f2(1270) photoproduction are extracted with good precision, due to low backgrounds, and are compared with theoretical calculations.
Experiment Numbers:
Group: Hall B
Document: pdf
Accepted Manuscript:
Supporting Documents:
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