PROBING HADRONIC STRUCTURE WITH THE DECAY DELTA-]NL(-)()L()

Citation
Mn. Butler et al., PROBING HADRONIC STRUCTURE WITH THE DECAY DELTA-]NL(-)()L(), Physical review. C. Nuclear physics, 48(2), 1993, pp. 917-919
Citations number
4
Categorie Soggetti
Physics, Nuclear
ISSN journal
05562813
Volume
48
Issue
2
Year of publication
1993
Pages
917 - 919
Database
ISI
SICI code
0556-2813(1993)48:2<917:PHSWTD>2.0.ZU;2-M
Abstract
We compute the branching ratio for DELTA --> Ne+e- and DELTA --> Nmu+m u- in chiral perturbation theory and find that both decays should be o bservable at the Continuous Electron Beam Accelerator Facility. With s ufficiently low threhsolds on the e+e- invariant mass a branching rati o of approximately 10(-5) may be observed for DELTA --> Ne+e-. For the DELTA --> Nmu+mu- decay mode we predict a branching ratio of 3 X 10(- 7). The dependence of the M1 and E2 amplitudes on the momentum transfe r will provide a useful test of chiral perturbation theory which predi cts approximately 20% variation over the allowed kinematic range.