Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cylindrical Symmetry Discrimination of Magnetoelectric Optical
  Systematic Effects in a Pump-probe Atomic Parity Violation Experiment   A pump-probe atomic parity violation (APV) experiment performed in a
longitudinal electric field, provides a signal breaking mirror symmetry while
preserving the cylindrical symmetry of the set-up. The excited vapor acts on
the probe beam as a linear dichroic amplifier, imprinting a very specific
signature on the detected signal. Our differential polarimeter is oriented to
yield a null result unless the excited atoms are endowed with a chirality of
some kind. Ideally, only the APV (E-odd) and the calibration (E-even) signals
contribute to a chiral atomic response, a situation highly favourable to the
detection of a tiny effect. In the present work we give a thorough analysis of
possible unwanted defects like stray transverse fields or misalignments which
would spoil the ideal set-up and lead to chiral systematics. A possible way to
suppress such effects is to perform global rotations of the experiment by
incremental steps of 45 degrees, leaving both stray fields and misalignments
unaltered. The conspiration of at least two defects is necessary to affect the
E-odd polarimeter signal. The transverse nature of the defects manifests itself
by an azimuthal cosine square modulation. The harmful systematics are those
which survive the averaging over four successive configurations. They require
the presence of a stray transverse electric field, which can be determined and
eventually minimized by auxiliary measurements of the systematic effects,
amplified by applying a known external magnetic field. Transverse stray
magnetic fields must be compensated by a similar procedure. We also propose
statistical correlation tests as diagnoses of the aforementioned systematic
effects.

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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an