Measurement of the pi^0 -> e^+e^-gamma Dalitz decay at the Mainz Microtron
High Energy Physics - Experiment
2017-02-21 v2 Nuclear Experiment
Abstract
The Dalitz decay pi^0 -> e^+e^-gamma has been measured in the gamma p -> pi^0 p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the pi^0 electromagnetic transition form factor, a_pi = 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_pi is lower than in previous results based on the pi^0 -> e^+e^-gamma decay.
Keywords
Cite
@article{arxiv.1611.04739,
title = {Measurement of the pi^0 -> e^+e^-gamma Dalitz decay at the Mainz Microtron},
author = {P. Adlarson and F. Afzal and P. Aguar-Bartolomé and Z. Ahmed and C. S. Akondi and J. R. M. Annand and H. J. Arends and K. Bantawa and R. Beck and H. Berghäuser and M. Biroth and N. S. Borisov and A. Braghieri and W. J. Briscoe and S. Cherepnya and F. Cividini and C. Collicott and S. Costanza and A. Denig and M. Dieterle and E. J. Downie and P. Drexler and M. I. Ferretti Bondy and L. V. Fil'kov and S. Gardner and S. Garni and D. I. Glazier and D. Glowa and W. Gradl and G. M. Gurevich and D. J. Hamilton and D. Hornidge and G. M. Huber and T. C. Jude and A. Käser and V. L. Kashevarov and S. Kay and I. Keshelashvili and R. Kondratiev and M. Korolija and B. Krusche and V. V. Kulikov and A. Lazarev and J. Linturi and V. Lisin and K. Livingston and I. J. D. MacGregor and R. Macrae and D. M. Manley and P. P. Martel and M. Martemianov and J. C. McGeorge and E. F. McNicoll and V. Metag and D. G. Middleton and R. Miskimen and E. Mornacchi and C. Mullen and A. Mushkarenkov and A. Neganov and A. Neiser and A. Nikolaev and M. Oberle and M. Ostrick and P. Ott and P. B. Otte and D. Paudyal and P. Pedroni and A. Polonski and S. Prakhov and A. Rajabi and J. Robinson and G. Ron and G. Rosner and T. Rostomyan and C. Sfienti and M. H. Sikora and V. Sokhoyan and K. Spieker and O. Steffen and I. I. Strakovsky and B. Strandberg and Th. Strub and I. Supek and A. Thiel and M. Thiel and A. Thomas and M. Unverzagt and Yu. A. Usov and S. Wagner and N. Walford and D. P. Watts and D. Werthmüller and J. Wettig and L. Witthauer and M. Wolfes and L. A. Zana},
journal= {arXiv preprint arXiv:1611.04739},
year = {2017}
}
Comments
11 pages, 7 figures, 1 table