Measurement of 3pi^0 photoproduction on the proton from threshold to 1.4 GeV
A.Starostin, I.M.Suarez, B.M.K.Nefkens, J.Ahrens, J.R.M.Annand,, H.J.Arends, K.Bantawa, P.A.Bartolome, R.Beck, V.Bekrenev, A.Braghieri,, D.Branford, W.J.Briscoe, J.Brudvik, S.Cherepnya, M.Dieterle, E.J.Downie,, L.V.Fil'kov, D.I.Glazier, R.Gregor, E.Heid, D.Hornidge, I.Jaegle
TL;DR
This study measures the total cross section of gamma p -> 3pi0 p from threshold to 1.4 GeV, revealing two broad enhancements and providing new data for understanding photoproduction processes.
Contribution
First measurement of the gamma p -> 3pi0 p total cross section from threshold to 1.4 GeV using advanced detectors at Mainz Microtron.
Findings
Observed two broad enhancements at sqrt{s}~1.5 GeV and 1.7 GeV.
Determined the ratio of cross sections gamma p -> 3pi0 p to gamma p -> eta p as 0.014 ± 0.001 at sqrt{s}~1.5 GeV.
Provided new experimental data for photoproduction near threshold.
Abstract
The total cross section for gamma p -> 3pi0 p has been measured for the first time from threshold to 1.4 GeV using the tagged photon beam of the Mainz Microtron. The equipment utilized the Crystal Ball multiphoton spectrometer, the TAPS forward detector and a particle identification detector. The gamma p -> 3pi0 p total cross section has two broad enhancements at sqrt{s}~1.5 GeV and 1.7 GeV. We obtained the ratio of the total cross sections gamma p -> 3pi0 p to gamma p -> eta p equal to 0.014 \pm 0.001 at sqrt{s}~1.5 GeV.
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Taxonomy
TopicsElectron and X-Ray Spectroscopy Techniques · Nuclear Physics and Applications · Radiation Therapy and Dosimetry