Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Physics effects in charm meson decays involving $c \to u l^+ l^-
  (l_i^\mp l_j^\pm)$ transitions   We study the effect of scalar leptoquark and $Z^\prime$ boson on the rare
decays of $D$ mesons involving flavour changing transitions $c \to u l^+ l^-
(l^\mp_i l^\pm_j)$. We constrain the new physics parameter space using the
branching ratio of the rare decay mode $D^0 \to \mu^+ \mu^-$ and the $D^0-\bar
D^0$ oscillation data. We compute the branching ratios, forward-backward
asymmetry parameters and flat terms in $D^{+(0)} \to \pi^{+(0)} \mu^+ \mu^-$
processes using the constrained parameters. The branching ratios of the lepton
flavour violating $D$ meson decays, such as $D^0 \to \mu e, ~\tau e$ and
$D^{+(0)} \to \pi^{+(0)} \mu^- e^+$ are also investigated.

11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
2
The categories of this paper are: math
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas