High-statistics measurement of the η→3π0 decay at the Mainz Microtron

Prakhov, S. et al. (2018) High-statistics measurement of the η→3π0 decay at the Mainz Microtron. Physical Review C, 97, 065203. (doi: 10.1103/PhysRevC.97.065203)

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The largest, at the moment, statistics of 7×106η→3π0 decays, based on 6.2×107η mesons produced in the γp→ηp reaction, has been accumulated by the A2 Collaboration at the Mainz Microtron, MAMI. It allowed a detailed study of the η→3π0 dynamics beyond its conventional parametrization with just the quadratic slope parameter α and enabled, for the first time, a measurement of the second-order term and a better understanding of the cusp structure in the neutral decay. The present data are also compared to recent theoretical calculations that predict a nonlinear dependence along the quadratic distance from the Dalitz-plot center.

Item Type:Articles
Additional Information:This work was supported by the Deutsche Forschungsgemeinschaft (SFB443, SFB/TR16, and SFB1044), DFG-RFBR (Grant No. 09-02- 91330), the European Community-Research Infrastructure Activity under the FP6 “Structuring the European Research Area” program (Hadron Physics, Contract No. RII3-CT- 2004-506078), Schweizerischer Nationalfonds (Contracts No. 200020-156983, No. 132799, No. 121781, No. 117601, No. 113511), the U.K. Science and Technology Facilities Council (STFC 57071/1, 50727/1), the U.S. Department of Energy (Of- fices of Science and Nuclear Physics, Awards No. DE-FG02- 99-ER41110, No. DE-FG02-88ER40415, No. DE-FG02-01- ER41194) and National Science Foundation (Grants No. PHY- 1039130, No. IIA-1358175), INFN (Italy), and NSERC of Canada (Grant No. FRN-SAPPJ-2015-00023). A. Fix ac- knowledges additional support from the Tomsk Polytechnic University competitiveness enhancement program.
Glasgow Author(s) Enlighten ID:Glazier, Dr Derek and McGeorge, Dr John and Werthmueller, Dr Dominik and MacGregor, Professor Douglas and Livingston, Dr Kenneth and Strandberg, Bruno and Gardner, Mr Simon and Prakhov, Dr Sergey and Annand, Dr John
Authors: Prakhov, S., Abt, S., Achenbach, P., Adlarson, P., Afzal, F., Aguar-Bartolomé, P., Ahmed, Z., Ahrens, J., Annand, J.R.M., Arends, H.J., Bantawa, K., Bashkanov, M., Beck, R., Biroth, M., Borisov, N.S., Braghieri, A., Briscoe, W.J., Cherepnya, S., Cividini, F., Collicott, C., Constanza, S., Denig, A., Dieterle, M., Downie, E.J., Drexler, P., Ferretti Bondy, M.I., Fil'kov, L.V., Fix, A., Gardner, S., Garni, S., Glazier, D.I., Gorodnov, I., Gradl, W., Gurevich, G.M., Hamill, C.B., Heijkenskjöld, L., Horndige, D., Huber, G.M., Käser, A., Kashevarov, V.L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I.J.D., Manley, D.M., Martel, P.P., McGeorge, J.C., Middleton, D.G., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Neganov, A., Neiser, A., Oberle, M., Ostrick, M., Otte, P.B., Paudyal, D., Pedroni, P., Polonski, A., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sokhoyan, V., Spiekter, K., Steffen, O., Strakovsky, I.I., Strandberg, B., Strub, T., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Y. A., Wagner, S., Walford, N.K., Watts, D.P., Werthmüller, D., Wettig, J., Witthauer, L., Wolfes, M., and Zana, L.A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review C
Publisher:American Physical Society
ISSN (Online):2469-9993
Copyright Holders:Copyright © 2018 American Physical Society
First Published:First published in Physical Review C 97:065203
Publisher Policy:Reproduced under a Creative Commons License

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