High-statistics measurement of the η→3π0 decay at the Mainz Microtron (CROSBI ID 278265)
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Podaci o odgovornosti
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. ; Costanza, 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. ; Hornidge, D. ; Huber, G. M. ; Käser, A. ; Kashevarov, V. L. ; Kay, S. ; Keshelashvili, I. ; Kondratiev, R. ; Korolija, Milorad ; 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. ; Spieker, K. ; Steffen, O. ; Strakovsky, I. I. ; Strandberg, B. ; Strub, Th. ; Supek, Ivan ; Thiel, A. ; Thiel, M. ; Thomas, A. ; Unverzagt, M. ; Usov, Yu. A. ; Wagner, S. ; Walford, N. K. ; Watts, D. P. ; Werthmüller, D. ; Wettig, J. ; Witthauer, L. ; Wolfes, M. ; Zana, L. A.
A2 Collaboration at MAMI
engleski
High-statistics measurement of the η→3π0 decay at the Mainz Microtron
The largest, at the moment, statistics of 7 x 10(6) eta -> 3 pi(0) decays, based on 6.2 x 10(7) eta mesons produced in the gamma p -> eta p reaction, has been accumulated by the A2 Collaboration at the MainzMicrotron, MAMI. It allowed a detailed study of the eta -> 3 pi(0) dynamics beyond its conventional parametrization with just the quadratic slope parameter a 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.
tagged photon spectrometer ; parameter alpha ; dynamics
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