Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recent Results on Flavor Physics from BaBar   We report an update to our previous measurement of the CKM element $|V_{ub}|$
using exclusive $B \rightarrow \pi \ell \nu$ decays. In the charm sector we
have performed a measurement of $f_{Ds}$ using $D_s\rightarrow\tau^+\nu_{\tau}$
decays, we have measured the mixing parameter $y_{CP}$ using the lifetime ratio
$\frac{\langle\tau_{K\pi}\rangle}{\langle\tau_{hh}\rangle}$ in $D^0$ decays,
and we have also searched for CP violation using T-odd correlations in $D^0$
decays to $K^+K^-\pi^+\pi^-$. Finally, in the tau sector we have performed a
search for the lepton flavor violating decays $\tau^\pm \rightarrow e^\pm
\gamma$ and $\tau^\pm \rightarrow \mu^\pm \gamma$.

1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con