Radiative Decay Width of the a2(1320) Meson
Abstract
Coherent π+π-π- production in the interactions of a beam of 600GeV π- mesons with C, Cu and Pb nuclei has been studied with the SELEX facility (Experiment E781 at Fermilab). The a2(1320) meson signal has been detected in the Coulomb (low q2) region. The Primakoff formalism used to extract radiative decay width of this meson yields Γ = 284 ± 25 ± 25 keV, which is the most precise measurement to date.
- Publication:
-
Hadron Spectroscopy
- Pub Date:
- June 2002
- DOI:
- 10.1063/1.1482549
- Bibcode:
- 2002AIPC..619..835M
- Keywords:
-
- electromagnetic decays;
- a mesons;
- pion production;
- pion-nucleus reactions;
- Electromagnetic Interactions;
- Mesons;
- Nuclear Reactions;
- Particle Decay;
- Particle Production;
- Pions;
- 13.40.Hq;
- 13.25.Jx;
- 25.80.Hp;
- Physics of Elementary Particles and Fields;
- Electromagnetic decays;
- Decays of other mesons;
- Pion-induced reactions