Measurement of the π0→e+e−γ Dalitz decay at the Mainz Microtron
Date Issued
2017-01-01
Author(s)
Adlarson, P.
Afzal, F.
Aguar-Bartolome, P.
Ahmed, Z.
Akondi, C. S.
Annand, J. R. M.
Arends, H. J.
Bantawa, K.
Beck, R.
Berghaeuser, H.
Biroth, M.
Borisov, N. S.
Braghieri, A.
Briscoe, W. J.
Cherepnya, S.
Cividini, F.
Collicott, C.
Costanza, S.
Denig, A.
Dieterle, M.
Downie, E. J.
Drexler, P.
Bondy, M. I. Ferretti
Fil`kov, L. V.
Gardner, S.
Garni, S.
Glazier, D. I.
Glowa, D.
Gradl, W.
Gurevich, G. M.
Hamilton, D. J.
Hornidge, D.
Huber, G. M.
Jude, T. C.
Kaeser, A.
Kashevarov, V. L.
Kay, S.
Keshelashvili, I.
Kondratiev, R.
Korolija, M.
Kulikov, V. V.
Lazarev, A.
Linturi, J.
Lisin, V.
Livingston, K.
MacGregor, I. J. D.
Macrae, R.
Manley, D. M.
Martel, P. P.
Martemianov, M.
McGeorge, J. C.
McNicoll, E. F.
Metag, V.
Middleton, D. G.
Miskimen, R.
Mornacchi, E.
Mullen, C.
Mushkarenkov, A.
Neganov, A.
Neiser, A.
Nikolaev, A.
Oberle, M.
Ostrick, M.
Ott, P.
Otte, P. B.
Paudyal, D.
Pedroni, P.
Polonski, A.
Prakhov, S.
Rajabi, A.
Robinson, J.
Ron, G.
Rosner, G.
Rostomyan, T.
Sfienti, C.
Sikora, M. H.
Sokhoyan, V.
Spieker, K.
Steffen, O.
Strakovsky, I. I.
Strandberg, B.
Strub, Th.
Supek, I.
Thiel, A.
Thiel, M.
Thomas, A.
Unverzagt, M.
Usov, Yu. A.
Wagner, S.
Walford, N.
Watts, D. P.
Werthmueller, D.
Wettig, J.
Witthauer, L.
Wolfes, M.
Zana, L. A.
DOI
10.1103/physrevc.95.025202
Abstract
The Dalitz decay π0→e+e−γ has been measured in the γp→π0p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the π0 electromagnetic transition form factor, aπ=0.030±0.010tot, is in agreement with existing measurements of this decay and with recent theoretical calculations. The uncertainty obtained in the value of aπ is lower than in previous results based on the π0→e+e−γ decay.
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