Abstract
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.
| Original language | English |
|---|---|
| Article number | 065203 |
| Journal | Physical Review C |
| Volume | 97 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 7 Jun 2018 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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High-statistics measurement of the η→3π0 decay at the Mainz Microtron. / A2 Collaboration at MAMI.
In: Physical Review C, Vol. 97, No. 6, 065203, 07.06.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-statistics measurement of the η→3π0 decay at the Mainz Microtron
AU - A2 Collaboration at MAMI
AU - Prakhov, S.
AU - Abt, S.
AU - Achenbach, P.
AU - Adlarson, P.
AU - Afzal, F.
AU - Aguar-Bartolomé, P.
AU - Ahmed, Z.
AU - Ahrens, J.
AU - Annand, J. R.M.
AU - Arends, H. J.
AU - Bantawa, K.
AU - Bashkanov, M.
AU - Beck, R.
AU - Biroth, M.
AU - Borisov, N. S.
AU - Braghieri, A.
AU - Briscoe, W. J.
AU - Cherepnya, S.
AU - Cividini, F.
AU - Collicott, C.
AU - Costanza, S.
AU - Denig, A.
AU - Dieterle, M.
AU - Downie, E. J.
AU - Drexler, P.
AU - Ferretti Bondy, M. I.
AU - Fil'Kov, L. V.
AU - Fix, A.
AU - Gardner, S.
AU - Garni, S.
AU - Glazier, D. I.
AU - Gorodnov, I.
AU - Gradl, W.
AU - Gurevich, G. M.
AU - Hamill, C. B.
AU - Heijkenskjöld, L.
AU - Hornidge, D.
AU - Huber, G. M.
AU - Käser, A.
AU - Kashevarov, V. L.
AU - Kay, S.
AU - Keshelashvili, I.
AU - Kondratiev, R.
AU - Korolija, M.
AU - Krusche, B.
AU - Lazarev, A.
AU - Lisin, V.
AU - Livingston, K.
AU - Lutterer, S.
AU - Macgregor, I. J.D.
PY - 2018/6/7
Y1 - 2018/6/7
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85048173878&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048173878&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.97.065203
DO - 10.1103/PhysRevC.97.065203
M3 - Article
VL - 97
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 6
M1 - 065203
ER -