Apparatus for a Search for T-violating Muon Polarization in Stopped-Kaon Decays
Nuclear instruments and methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment/Nuclear instruments & methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment（2003）
摘要
The detector built at KEK to search for T-violating transverse muon polarization in K+ --> pi(0)mu(+)v(mu) (K-mu3) decay of stopped kaons is described. Sensitivity to the transverse polarization component is obtained from reconstruction of the decay plane by tracking the mu(+) through a toroidal spectrometer and detecting the pi(0) in a segmented CsI(TI) photon calorimeter. The muon polarization was obtained from the decay positron asymmetry of unions stopped in a polarimeter. The detector included features which minimized systematic errors while maintaining high acceptance. (C) 2003 Elsevier Science B.V. All rights reserved.
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关键词
separated stopped K beams,k(mu 3) decays,T-violation,transverse muon polarization,toroidal spectrometer,muon polarimeter,scintillation fiber target,CsI(Tl) photon detector
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