| Author(s) |
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|---|---|
| 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 | |
| Identifier(s) | |
| Publication Date |
2009-03-01
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| Publication Title |
Physical Review C
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| Volume |
79
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| Issue |
3
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| First Page |
035204-1
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| Last Page |
035204-13
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| Keywords | |
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| Community | |
| Recommended Citation |
Prakhov, S. N.; Nefkens, B. M.K.; Aguar-Bartolomé, P.; Akasoy, L. K.; Annand, J. R.M.; Arends, H. J.; Bantawa, K.; Beck, R.; Bekrenev, V. S.; Berghäuser, H.; Boillat., B.; Braghien, A.; Branford, D.; Briscoe, W. J.; Brudvik, J.; Cherepnya, S.; Codling, R.; Downie, E. J.; Drexler, P.; Fil'kov, L. V.; Glazier, D. I.; Gregor, R.; Heid, E.; Hornidge, D.; Jahn, O.; Jude, T. C.; Kashevarov, V. L.; Kellie, J. D.; Kondratiev, R.; Korolija, M.; Kotulla, M.; Koulbardis, A.; Krambrich, D.; Kruglov, S. P.; Krusche, B.; Lang, M.; Lisin, V.; Livingston, K.; MacGregor, I. J.D.; Maghrbi, Y.; Manley, D. Mark; Martinez, M. F.; McGeorge, J. C.; McNicoll, E. F.; Mekterovic, D.; Metag, V.; Micanovic, S.; Nikolaev, A.; Novotny, R.; Ostrick, M.; Otte, R. B.; Pedroni, P.; Pheron, F.; Polonski, A.; Robinson, J.; Rosner, G.; Rost, M.; Rostomyan, T.; Schumann, S.; Sikora, M. H.; Sober, D. I.; Starostin, A.; Suarez, I. M.; Supek, I.; Tarbert, C. M.; Thiel, M.; Thomas, A.; Unverzagt, M.; Watts, D. P.; 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 79(3) 035204-1-035204-13. doi: 10.1103/PhysRevC.79.035204. Retrieved from https://oaks.kent.edu/phypubs/142
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