An apparatus for the measurement of the transverse polarization of positrons from the decay of polarized muons

Citation
Ic. Barnett et al., An apparatus for the measurement of the transverse polarization of positrons from the decay of polarized muons, NUCL INST A, 455(2), 2000, pp. 329-345
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
0168-9002 → ACNP
Volume
455
Issue
2
Year of publication
2000
Pages
329 - 345
Database
ISI
SICI code
0168-9002(200012)455:2<329:AAFTMO>2.0.ZU;2-U
Abstract
An apparatus for the measurement of the two transverse polarization compone nts P-T1 and P-T2 of the positrons from polarized mu (+) decay is described . It makes use of a stroboscopic method which cancels many systematic asymm etries and allows one to use muon stop rates in the order of up to 10(8) s( -1). The experiment aims at an accuracy of DeltaP(T1) = DeltaP(T2), = 3 x 1 0(-3) and by that at an improvement of the existing limit by nearly one ord er of magnitude. With these results one will obtain an improved model-indep endent value for the Fermi coupling constant G(F) and more stringent limits to possible violations of time reversal invariance in a purely leptonic re action: (C) 2000 Elsevier Science B.V. All rights reserved.