Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the Permanent Electric Dipole Moment of the $^{129}$Xe
  Atom   We report on a new measurement of the CP-violating permanent Electric Dipole
Moment (EDM) of the neutral $^{129}$Xe atom. Our experimental approach is based
on the detection of the free precession of co-located nuclear spin-polarized
$^3$He and $^{129}$Xe samples. The EDM measurement sensitivity benefits
strongly from long spin coherence times of several hours achieved in diluted
gases and homogeneous weak magnetic fields of about 400~nT. A finite EDM is
indicated by a change in the precession frequency, as an electric field is
periodically reversed with respect to the magnetic guiding field. Our result,
$\left(-4.7\pm6.4\right)\cdot 10^{-28}$ ecm, is consistent with zero and is
used to place a new upper limit on the $^{129}$Xe EDM: $|d_\text{Xe}|<1.5 \cdot
10^{-27}$ ecm (95% C.L.). We also discuss the implications of this result for
various CP-violating observables as they relate to theories of physics beyond
the standard model.

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The categories of this paper are: stat
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg