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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2335
DTSTART:20111117T203000Z
DURATION:PT1H0M0S
DTSTAMP:20240319T061402Z
LAST-MODIFIED:20111027T141548Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Magic\, precise\, and electroweak\, NPAC (Nuclear/Particle/Ast
ro/Cosmo) Forum\, Andrei Derevianko\, University of Nevada-Reno
DESCRIPTION:Precision timepieces are marvels of human ingenuity. Over
the past half-a-century\, precision time-keeping has been carried out
with atomic clocks. I will review a novel and rapidly developing class
of atomic clocks\, optical lattice clocks. At their projected accurac
y level\, these would neither lose nor gain a fraction of a second ove
r estimated age of the Universe. In other words\, if someone were to b
uild such a clock at the Big Bang and if such a timepiece were to surv
ive the 14 billion years\, the clock would be off by no more than a me
re second. I will also talk about the next frontier: nuclear clock.
\n
\nIn the second part I will overview atomic searches for new
physics beyond the Standard Model of elementary particles. I will rep
ort on a refined analysis of table-top experiments on violation of mir
ror symmetry in atoms that sets powerful constraints on a hypothesized
particle\, the extra Z-boson. Our raised bound on the Z' masses impro
ves upon the Tevatron results and carves out a lower-energy part of th
e discovery reach of the Large Hadron Collider.
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URL:https://www.physics.wisc.edu/events/?id=2335
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