Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing CP and Time Reversal Symmetries with $\Lambda_b \to \Lambda
  V(1-)$ Decays   In this letter, an overview is given for interesting tests of both CP and
Time Reversal symmetries with the beauty baryon $\Lambda_b $. Extensive use of
the helicity formalism and HQET is done for all calculations. Then, emphasis is
put on sophisticated methods like analysis of resonance polarizations and
particular angle distributions which can exhibit a clear signal of TR
violation.

5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
9
The categories of this paper are: nlin