Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies of B-Hadron Decays to Charmless Final States at LHCb   LHCb has a rich programme studying hadronic B-decays and is already showing
that with early data it can produce precision measurements which improve on
current world averages. The preliminary results presented include the new
world's best measurements of the Acp(Bd -> K+ pi-) = -0.088 +/- 0.011 (stat)
+/- 0.008 (syst) and tau(Bs -> K+ K-) = 1.440 +/- 0.096 (stat) +/- 0.010 (syst)
ps. These were obtained using the full 2010 data sample containing 37 pb-1 and
also 320 pb-1 of the 2011 data. The first observation of CP violation in Bs ->
pi+ K- is also presented.

19
The categories of this paper are: eess
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys