Relative branching ratio of the η→π0γγ decay channel
| Autor: | R. Manweiler, S. P. Kruglov, N. Knecht, G. M. Huber, T. D. S. Stanislaus, S. McDonald, A. Shafi, D. M. Manley, D. D. Koetke, J. Olmsted, Z. Papandreou, G. J. Lolos, S. Li, V.S. Bekrenev, N. G. Kozlenko, K. Benslama, D. Grosnick, D. Isenhower, W. J. Briscoe |
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| Rok vydání: | 2004 |
| Předmět: |
Physics
Rare eta decay Nuclear and High Energy Physics Chiral perturbation theory Meson 010308 nuclear & particles physics Branching fraction Hadron Branching ratio 01 natural sciences Nuclear physics Particle decay Pion 0103 physical sciences High Energy Physics::Experiment Atomic physics Nuclear Experiment 010306 general physics Crystal Ball Dimensionless quantity |
| Zdroj: | Physics Letters B. 589(1-2):14-20 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/j.physletb.2004.03.038 |
| Popis: | The η → π 0 γγ rare decay was measured at the AGS with the Crystal Ball photon spectrometer and its relative branching ratio was extracted to be B 1 =(8.3±2.8±1.4)×10 −4 , based on the analysis of 3×10 7 detected η mesons. This leads to a lower partial width for this eta channel than past measurements and is in line with chiral perturbation theory calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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