| Title: | Measurement of the omega -> pi^0 e^+e^- and eta -> e^+e^-g Dalitz decays with the A2 setup at MAMI |
| Authors: | Adlarson, P.
Afzal, F.
Afzal, F.
Aguar-Bartolomé, P.
Ahmed, Z.
Annand, J. R.
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.
Danilkin, I. V.
Denig, A.
Dieterle, M.
Downie, E. J.
Drexler, P.
Ferretti Bondy, M. I.
Fil'kov, L. V.
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.
Lazarev,, A.
Linturi, James M.
Lisin, V.
Livingston, K.
MacGregor, I. J.
Macrae, R.
Manley, D. M.
Martel, P. P.
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. |
| Keywords: | High Energy Physics - Experiment (hep-ex)
Nuclear Experiment (nucl-ex) |
| Issue Date: | 2017 |
| Citation: | Phys. Rev. C 95, 035208 (2017) |
| Abstract: | The Dalitz decays η→e+e−γ and ω→π0e+e− have been measured in the γp→ηp and γp→ωp reactions, respectively, with the A2 tagged-photon facility at the Mainz Microtron. The value obtained for the slope parameter of the electromagnetic transition form factor of η, Λη−2=(1.97±0.11tot)GeV−2, is in good agreement with previous measurements of the η→e+e−γ and η→μ+μ−γ decays. The uncertainty obtained in the value of Λη−2 is lower than in previous results based on the η→e+e−γ decay. The value obtained for the ω slope parameter, Λωπ0−2=(1.99±0.21tot)GeV−2, is somewhat lower than previous measurements based on ω→π0μ+μ−, but the results for the ω transition form factor are in better agreement with theoretical calculations, compared to earlier experiments. |
| Description: | DOI: 10.1103/PhysRevC.95.035208 |
| URI: | https://arxiv.org/pdf/1609.04503.pdf
http://repository.seku.ac.ke/handle/123456789/3877 |
| Appears in Collections: | School of Science and Computing (JA)
|
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