Measurement of the π0→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.; 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.; 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.; Werthmüller, D.; Wettig, J.; Witthauer, L.; Wolfes, M.; Zana, L. A.

doi:10.1103/PhysRevC.95.025202

Measurement of the $π^{0} \to e^{+} e^{-} γ$ Dalitz decay at the Mainz Microtron

Journal Article · Thu Feb 09 00:00:00 EST 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.95.025202· OSTI ID:1439719

Adlarson, P. ^[1]; 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. more »

Institut f¨ur Kernphysik, University of Mainz, D-55099 Mainz, Germany

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, a_π= 0.030 ± 0.010_tot, is in agreement with existing measurements of this decay and with recent theoretical calculations. The uncertainty obtained in the value of a_π is lower than in previous results based on the π⁰ → e⁺e^-γ decay.

View Accepted Manuscript (DOE)

Research Organization:: George Washington Univ., Washington, DC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Contributing Organization:: A2 Collaboration at MAMI

Grant/Contract Number:: FG02-01ER41194; FG02-88ER40415; FG02-99ER41110; SC0016583

OSTI ID:: 1439719

Alternate ID(s):: OSTI ID: 1343343

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 2 Vol. 95; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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