Observation of the rare eta->e+e-e+e- decay with the KLOE experiment
High Energy Physics - Experiment
2015-05-28 v3
Abstract
We report the first observation of the rare eta->e+e-e+e- decay based on 1.7 fb^{-1} collected by the KLOE experiment at the DAFNE phi-factory. The selection of the e+e-e+e- final state is fully inclusive of radiation. We have identified 362 +- 29 events resulting in a branching ratio of (2.4 +- 0.2_stat+bckg +- 0.1_syst) x 10^{-5}.
Keywords
Cite
@article{arxiv.1105.6067,
title = {Observation of the rare eta->e+e-e+e- decay with the KLOE experiment},
author = {The KLOE Collaboration and F. Ambrosino and A. Antonelli and M. Antonelli and F. Archilli and I. Balwierz and G. Bencivenni and C. Bini and C. Bloise and S. Bocchetta and F. Bossi and P. Branchini and G. Capon and T. Capussela and F. Ceradini and P. Ciambrone and E. Czerwinski and E. DeLucia and A. DeSantis and P. DeSimone and G. DeZorzi and A. Denig and A. DiDomenico and C. DiDonato and B. DiMicco and M. Dreucci and G. Felici and S. Fiore and P. Franzini and C. Gatti and P. Gauzzi and S. Giovannella and E. Graziani and M. Jacewicz and J. Lee-Franzini and M. Martemianov and M. Martini and P. Massarotti and S. Meola and S. Miscetti and G. Morello and M. Moulson and S. Muller and M. Napolitano and F. Nguyen and M. Palutan and A. Passeri and V. Patera and I. PradoLonghi and P. Santangelo and B. Sciascia and M. Silarski and T. Spadaro and C. Taccini and L. Tortora and G. Venanzoni and R. Versaci and G. Xu and J. Zdebik and as members of the KLOE-2 collaboration and : and D. Babusci and D. Badoni and V. Bocci and A. Budano and S. A. Bulychjev and P. Campana and E. Dane and G. DeRobertis and D. Domenici and O. Erriquez and G. Fanizzi and F. Gonnella and F. Happacher and B. Hoistad and E. Iarocci and T. Johansson and V. Kulikov and A. Kupsc and F. Loddo and M. Matsyuk and R. Messi and D. Moricciani and P. Moskal and A. Ranieri and I. Sarra and M. Schioppa and A. Sciubba and W. Wislicki and M. Wolke},
journal= {arXiv preprint arXiv:1105.6067},
year = {2015}
}
Comments
12 pages, 3 figures, to be published on PLB