Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An event mixing method with invariant-mass/energy hierarchy
  correspondence cut for Bose-Einstein correlations in $\pi \pi X$ system   A new event mixing constraint, namely invariant-mass/energy hierarchy
correspondence (IMEHC) cut, is introduced for the low-multiplicity event mixing
technique for the purpose of measuring Bose-Einstein correlations (BEC) in
exclusive reactions with $\pi \pi X$ final state particles.The mixing cut is
relevant to the hierarchy of the invariant mass of $\pi X$ system and two
bosons energy hierarchy. Numerical tests are performed to check the validity of
the new mixing method. As long as the measurements of BEC parameters $r_0$ and
$\lambda_2$ are considered, this new mixing method is effective to observe BEC
effects and the systematic bias of $r_0$ and $\lambda_2$ are smaller than the
previously proposed mixing cut.

11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
19
The categories of this paper are: eess
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th