3 research outputs found
A multi-chanel electrical impedance meter based on digital lock-in technology
Abstract
The presented multichannel measuring system working on various frequencies is suitable either for electrical impedance spectroscopy or tomography. The authors of this paper have developed the complete measurement system and a graphical user interface platform. The accuracy of impedance amplitude and phase are 1 ppm and 0.01°, respectively. The basic instrument works with 8 channels and can be expanded to 64 channels with the application of multiplexing or multiple parallel connected instruments in the same system
Measurement of the B+c meson lifetime using B+câJ/ÏÎŒ+ΜΌX decays
The lifetime of the meson is measured using semileptonic decays
having a meson and a muon in the final state. The data,
corresponding to an integrated luminosity of , are
collected by the LHCb detector in collisions at a centre-of-mass energy of
. The measured lifetime is where the first uncertainty is statistical and the second is
systematic