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2018 ; 376
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): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Challenging the standard model by high-precision comparisons of the fundamental
properties of protons and antiprotons
#MMPMID29459414
Ulmer S
; Mooser A
; Nagahama H
; Sellner S
; Smorra C
Philos Trans A Math Phys Eng Sci
2018[Mar]; 376
(2116
): ä PMID29459414
show ga
The BASE collaboration investigates the fundamental properties of protons and
antiprotons, such as charge-to-mass ratios and magnetic moments, using advanced
cryogenic Penning trap systems. In recent years, we performed the most precise
measurement of the magnetic moments of both the proton and the antiproton, and
conducted the most precise comparison of the proton-to-antiproton charge-to-mass
ratio. In addition, we have set the most stringent constraint on directly
measured antiproton lifetime, based on a unique reservoir trap technique. Our
matter/antimatter comparison experiments provide stringent tests of the
fundamental charge-parity-time invariance, which is one of the fundamental
symmetries of the standard model of particle physics. This article reviews the
recent achievements of BASE and gives an outlook to our physics programme in the
ELENA era.This article is part of the Theo Murphy meeting issue 'Antiproton
physics in the ELENA era'.