Measurement of the π 0 → e + e − γ Dalitz decay at the Mainz Microtron

Adlarson, P.; Keshelashvili, I.; Berghäuser, H.; Jude, T. C.; Ostrick, M.; Sfienti, C.; Ott, P.; Thiel, A.; Collicott, C.; Strub, Th.; Mullen, C.; Nikolaev, A.; Steffen, O.; Fil'kov, L. V.; Sikora, M. H.; Gurevich, G. M.; Lazarev, A.; Cividini, F.; Briscoe, W. J.; Denig, A.; Paudyal, D.; Biroth, M.; Neganov, A.; McNicoll, E. F.; Arends, H. J.; Hamilton, D. J.; Robinson, J.; Glowa, D.; Metag, V.; Linturi, J.; Hornidge, D.; Thomas, A.; Watts, D. P.; Strakovsky, I. I.; Borisov, N. S.; Zana, L. A.; McGeorge, J. C.; Aguar-Bartolomé, P.; Strandberg, B.; Gradl, W.; Beck, R.; Middleton, D. G.; Miskimen, R.; Rosner, G.; Werthmüller, D.; Livingston, K.; Cherepnya, S.; Huber, G. M.; Thiel, M.; Akondi, C. S.; Rostomyan, T.; Costanza, S.; Kay, S.; Oberle, M.; Lisin, V.; Unverzagt, M.; Afzal, F.; Wettig, J.; Käser, A.; Kondratiev, R.; Garni, S.; Krusche, B.; Otte, P. B.; Wolfes, M.; Drexler, P.; Sokhoyan, V.; Glazier, D. I.; Bantawa, K.; MacGregor, I. J. D.; Korolija, M.; Kashevarov, V. L.; Mornacchi, E.; Martemianov, M.; Downie, E. J.; Macrae, R.; Witthauer, L.; Braghieri, A.; Manley, D. M.; Dieterle, M.; Usov, Yu. A.; Mushkarenkov, A.; Ahmed, Z.; Spieker, K.; Rajabi, A.; Martel, P. P.; Neiser, A.; Ferretti Bondy, M. I.; Prakhov, S.; Kulikov, V. V.; Pedroni, P.; Gardner, S.; Polonski, A.; Wagner, S.; Ron, G.; Supek, I.; Annand, J. R. M.; Walford, N.

doi:10.1103/PhysRevC.95.025202

Measurement of the π 0 → e + e − γ Dalitz decay at the Mainz Microtron

Adlarson, P. ; Afzal, F. ; Aguar-Bartolomé, P. ; Ahmed, Z. ; Akondi, C. S. ; Annand, J. R. M. ; Arends, H. J. ; Bantawa, K. ; Beck, R. ; Berghäuser, 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. ; Ferretti Bondy, M. I. ; 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. ; Käser, A. ; Kashevarov, V. L. ; Kay, S. ; Keshelashvili, I.FZJ* ; Kondratiev, R. ; Korolija, M. ; Krusche, B. ; 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. (Corresponding author) ; 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, T. ; Supek, I. ; Thiel, A. ; Thiel, M.FZJ* ; Thomas, A. ; Unverzagt, M. ; Usov, Y. A. ; Wagner, S. ; Walford, N. ; Watts, D. P. ; Werthmüller, D. ; Wettig, J. ; Witthauer, L. ; Wolfes, M. ; Zana, L. A.

2017
Inst. Woodbury, NY

Physical review / C 95(2), 025202 (2017) [10.1103/PhysRevC.95.025202]

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Please use a persistent id in citations: http://hdl.handle.net/2128/15075 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.

Classification:

ddc:530

Contributing Institute(s):

Experimentelle Hadrondynamik (IKP-2)

Research Program(s):

612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)

Appears in the scientific report 2017

Database coverage:
Medline

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