Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lifetime Measurements of the $A^2\Pi_{1/2}$ and $A^2\Pi_{3/2}$ States in
  BaF   Time resolved detection of laser induced fluorescence from pulsed excitation
of electronic states in barium monofluoride (BaF) molecules has been performed
in order to determine the lifetimes of the $A^2\Pi_{1/2}$ and $A^2\Pi_{3/2}$
states. The method permits control over experimental parameters such that
systematic biases in the interpretation of the data can be controlled to below
$10^{-3}$ relative accuracy. The statistically limited values for the lifetimes
of the $A^2\Pi_{1/2}(\nu=0)$ and $A^2\Pi_{3/2}(\nu=0)$ states are 57.1(3) ns
and 47.9(7)~ns, respectively. The ratio of these values is in good agreement
with scaling for the different excitation energies. The investigated molecular
states are of relevance for an experimental search for a permanent electric
dipole moment (EDM) of the electron in BaF.

4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph