1. Open Access Kent State
  2. Measurement of the slope parameter α for the η→3π0 decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
Author(s)
Abstract

The dynamics of the η→3π0 decay have been studied with the Crystal Ball multiphoton spectrometer and the TAPS calorimeter. Bremsstrahlung photons produced by the 1.5-GeV electron beam of the Mainz microtron MAMI-C and tagged by the Glasgow photon spectrometer were used for η-meson production. The analysis of 3×106 γp→ηp→3π0p→6γp events yields the value α=−0.032±0.003 for the η→3π0 slope parameter, which agrees with the majority of recent experimental results and has the smallest uncertainty. The π0π0invariant-mass spectrum was investigated for the occurrence of a cusplike structure in the vicinity of the π+π− threshold. The observed effect is small and does not affect our measured value for the slope parameter.
Format
Article
Identifier(s)
10.1103/PhysRevC.79.035204
Publication Date
2009-03-01
Publication Title
Physical Review C
Volume
79
Issue
3
First Page
035204-1
Last Page
035204-13
Keywords
Subject
Community
Department of Physics
Permalink https://oaks.kent.edu/phypubs/142
Prakhov, S., Nefkens, B., Aguar-Bartolomé, P., Akasoy, L., Annand, J., Arends, H., Bantawa, K., Beck, R., Bekrenev, V., Berghäuser, H., Boillat., B., Braghien, A., Branford, D., Briscoe, W., Brudvik, J., Cherepnya, S., Codling, R., Downie, E., Drexler, P., Fil’kov, L., Glazier, D., Gregor, R., Heid, E., Hornidge, D., Jahn, O., Jude, T., Kashevarov, V., Kellie, J., Kondratiev, R., Korolija, M., Kotulla, M., Koulbardis, A., Krambrich, D., Kruglov, S., Krusche, B., Lang, M., Lisin, V., Livingston, K., MacGregor, I., Maghrbi, Y., Manley, D., Martinez, M., McGeorge, J., McNicoll, E., Mekterovic, D., Metag, V., Micanovic, S., Nikolaev, A., Novotny, R., Ostrick, M., Otte, R., Pedroni, P., Pheron, F., Polonski, A., Robinson, J., Rosner, G., Rost, M., Rostomyan, T., Schumann, S., Sikora, M., Sober, D., Starostin, A., Suarez, I., Supek, I., Tarbert, C., Thiel, M., Thomas, A., Unverzagt, M., Watts, D., Zamboni, I., & Zehr, F. (2009). Measurement of the slope parameter α for the η→3π0 decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C). Physical Review C. https://doi.org/10.1103/PhysRevC.79.035204
Prakhov, S., B. Nefkens, P. Aguar-Bartolomé, L. Akasoy, J. Annand, H. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, B. Boillat., A. Braghien, D. Branford, W. Briscoe, J. Brudvik, S. Cherepnya, R. Codling, E. Downie, P. Drexler, L. Fil’kov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, T. Jude, V. Kashevarov, J. Kellie, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, D. Krambrich, S. Kruglov, B. Krusche, M. Lang, V. Lisin, K. Livingston, I. MacGregor, Y. Maghrbi, D. Manley, M. Martinez, J. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, A. Nikolaev, R. Novotny, M. Ostrick, R. Otte, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, M. Rost, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I. Suarez, I. Supek, C. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. Watts, I. Zamboni, and F. Zehr. 2009. “Measurement of the Slope Parameter α for the η→3π0 Decay With the Crystal Ball Detector at the Mainz Microtron (MAMI-C)”. Physical Review C. https://doi.org/10.1103/PhysRevC.79.035204.
Prakhov, S., B. Nefkens, P. Aguar-Bartolomé, L. Akasoy, J. Annand, H. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, B. Boillat., A. Braghien, D. Branford, W. Briscoe, J. Brudvik, S. Cherepnya, R. Codling, E. Downie, P. Drexler, L. Fil’kov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, T. Jude, V. Kashevarov, J. Kellie, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, D. Krambrich, S. Kruglov, B. Krusche, M. Lang, V. Lisin, K. Livingston, I. MacGregor, Y. Maghrbi, D. Manley, M. Martinez, J. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, A. Nikolaev, R. Novotny, M. Ostrick, R. Otte, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, M. Rost, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I. Suarez, I. Supek, C. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. Watts, I. Zamboni, and F. Zehr. Measurement of the Slope Parameter α for the η→3π0 Decay With the Crystal Ball Detector at the Mainz Microtron (MAMI-C). Physical Review C, 1 Mar. 2009, doi:10.1103/PhysRevC.79.035204.