New limit on the T-violating transverse muon polarization in K+-->pi0mu+nu decays

M Abe; M Aliev; V Anisimovsky; M Aoki; Y Asano; T Baker; M Blecher; P Depommier; M Hasinoff; K Horie; Y Igarashi; J Imazato; A P Ivashkin; M M Khabibullin; A N Khotjantsev; Yu G Kudenko; Y Kuno; K S Lee; A Levchenko; G Y Lim; J A Macdonald; O V Mineev; N Okorokova; C Rangacharyulu; S Shimizu; Y-H Shin; Y-M Shin; K S Sim; N Yershov; T Yokoi; KEK-E246 Collaboration

doi:10.1103/PhysRevLett.93.131601

New limit on the T-violating transverse muon polarization in K+-->pi0mu+nu decays

Phys Rev Lett. 2004 Sep 24;93(13):131601. doi: 10.1103/PhysRevLett.93.131601. Epub 2004 Sep 21.

Affiliation

¹ Institute of Applied Physics, University of Tsukuba, Ibaraki 305-0006, Japan.

PMID: 15524701
DOI: 10.1103/PhysRevLett.93.131601

Abstract

A search for T-violating transverse muon polarization (P(T)) in the K+-->pi(0)mu(+)nu decay was performed using kaon decays at rest. A new improved value P(T)=-0.0017+/-0.0023(stat)+/-0.0011(syst) was obtained giving an upper limit |P(T)|<0.0050. The T-violation parameter was determined to be Imxi=-0.0053+/-0.0071(stat)+/-0.0036(syst) giving an upper limit |Imxi|<0.016.