Determination of the Dalitz plot parameter α for the decay η → 3 π0_{} with the Crystal Ball at MAMI-B
Abstract
A precise measurement of the Dalitz plot parameter, α , for the η → 3 π0_{} decay is presented. The experiment was performed with the Crystal Ball and TAPS large-acceptance photon detectors at the tagged photon beam facility of the MAMI-B electron accelerator in Mainz. High statistics of 1.8 · 106 η → 3 π0_{} events were obtained, giving the result α = - 0.032±0.002stat±0.002syst.
- Publication:
-
European Physical Journal A
- Pub Date:
- February 2009
- DOI:
- 10.1140/epja/i2008-10710-7
- arXiv:
- arXiv:0812.3324
- Bibcode:
- 2009EPJA...39..169U
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- 9 pages, 6 figures, published in the online-first section of EPJ A, included changes referees asked for, added DOI