Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: B decays with $\tau$-leptons in non-universal left-right models   Recent measurements of semileptonic $B$-meson decays into $\tau$-leptons are
somewhat higher than expected in the standard model. Although the deviations
are less than 3$\sigma$, they suggest the possibility of new physics affecting
primarily the $\tau$-lepton. In this paper we examine these results within the
context of non-universal left-right models. We find that strong constraints
from $b\to s \gamma$ on $W-W^\prime$ mixing lead to a prediction of
approximately equal enhancements for the $B\to D \tau \nu$ and the $B\to
D^\star \tau \nu$ modes. The model predicts approximately the same enhancement
for the inclusive semileptonic rate $\bar{B} \to X_c \tau\nu$ as well as for
the leptonic decay $B_c^-\to \tau^- \nu$. An enhancement in the leptonic decay
$B^-\to \tau^-\nu$ is also possible but is not uniquely correlated with the
other modes. For this explanation to be viable, the mass of the non-universal
$W^\prime$ would be below 1 TeV, within LHC reach.

6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin