1 accelerator tests
1.1 time dilation , cpt symmetry
1.2 twin paradox
1.3 clock hypothesis
accelerator tests
time dilation , cpt symmetry
much more precise measurements of particle decays have been made in particle accelerators using muons , different types of particles. besides confirmation of time dilation, cpt symmetry confirmed comparing lifetimes of positive , negative particles. symmetry requires decay rates of particles , antiparticles have same. violation of cpt invariance lead violations of lorentz invariance , special relativity.
today, time dilation of particles routinely confirmed in particle accelerators alongside tests of relativistic energy , momentum, , consideration obligatory in analysis of particle experiments @ relativistic velocities.
twin paradox
bailey et al. (1977) measured lifetime of positive , negative muons sent around loop in cern muon storage ring. experiment confirmed both time dilation , twin paradox, i.e. hypothesis clocks sent away , coming initial position slowed respect resting clock. other measurements of twin paradox involve gravitational time dilation well, see instance hafele–keating experiment , repetitions.
clock hypothesis
the clock hypothesis states extent of acceleration not influence value of time dilation. in of former experiments mentioned above, decaying particles in inertial frame, i.e. unaccelerated. however, in bailey et al. (1977) particles subject transverse acceleration of ∼10 g. since result same, shown acceleration has no impact on time dilation. in addition, roos et al. (1980) measured decay of sigma baryons, subject longitudinal acceleration between 0.5 , 5.0 × 10 g. again, no deviation ordinary time dilation measured.
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