Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Standard Model prediction and new physics tests for D0 -> h+h-l+l-
  (h=\pi,K; l=e,\mu)   Motivated by the recent evidence for direct CP-violation in D0 -> h+h-
decays, we provide an exhaustive study of both Cabibbo-favored and
Cabibbo-suppressed (singly and doubly) D0 -> h1+h2-l+l- decays. In particular,
we study the Dalitz plot for the long-distance contributions in the
(m_{ll}^2,m_{hh}^2) parameter space. We find that near-resonant effects, i.e.,
D0 -> V(h1+h2-)l+l- with V=\rho,K*,\phi, are sizeable and even dominant (over
Bremsstrahlung) for the \mu+\mu- decay modes, bringing the branching ratios
close to the LHCb reach. We also provide a detailed study of the angular
asymmetries for such decays and identify signatures for new physics detection.
In particular, new physics signals can be neatly isolated in asymmetries
involving the semileptonic operator Q_{10}, where for typical new physics
scenarios the effects can be as sizeable as O(1%) for the doubly
Cabibbo-suppressed modes.

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The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con