Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interpreting BEC in e+e- annihilation   The usual interpretation of Bose-Einstein correlations (BEC) of identical
boson pairs relates the width of the peak in the correlation function at small
relative four-momentum to the spatial extent of the source of the bosons.
However, in the tau-model, which successfully describes BEC in hadronic Z
decay, the width of the peak is related to the temporal extent of boson
emission. Some new checks on the validity of both the tau-model and the usual
descriptions are presented.

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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph