Experimental study of the radiative decays K+-->mu(+)nue(+)e(-) and K+-->e(+)nue(+)e(-)

A A Poblaguev; R Appel; G S Atoyan; B Bassalleck; D R Bergman; N Cheung; S Dhawan; H Do; J Egger; S Eilerts; W Herold; V V Issakov; H Kaspar; D E Kraus; D M Lazarus; P Lichard; J Lowe; J Lozano; H Ma; W Majid; S Pislak; P Rehak; A Sher; J A Thompson; P Truöl; M E Zeller

doi:10.1103/PhysRevLett.89.061803

Experimental study of the radiative decays K+-->mu(+)nue(+)e(-) and K+-->e(+)nue(+)e(-)

Phys Rev Lett. 2002 Aug 5;89(6):061803. doi: 10.1103/PhysRevLett.89.061803. Epub 2002 Jul 23.

Authors

Affiliation

¹ Institute for Nuclear Research of Russian Academy of Sciences, Moscow 117 312, Russia.

PMID: 12190577
DOI: 10.1103/PhysRevLett.89.061803

Abstract

Experiment 865 at the Brookhaven Alternating Gradient Synchrotron obtained 410 K+-->e(+)nue(+)e(-) and 2679 K+-->mu(+)nue(+)e(-) events including 10% and 19% background. The branching ratios were measured to be [2.48+/-0.14(stat)+/-0.14(syst)]x10(-8) (m(ee)>150 MeV) and (7.06+/-0.16+/-0.26)x10(-8) (m(ee)>145 MeV), respectively. Results for the decay form factors are presented.