Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Performance of $b$-Jet Identification in the ATLAS Experiment   The identification of jets containing $b$ hadrons is important for the
physics programme of the ATLAS experiment at the Large Hadron Collider. Several
algorithms to identify jets containing $b$ hadrons are described, ranging from
those based on the reconstruction of an inclusive secondary vertex or the
presence of tracks with large impact parameters to combined tagging algorithms
making use of multi-variate discriminants. An independent $b$-tagging algorithm
based on the reconstruction of muons inside jets as well as the $b$-tagging
algorithm used in the online trigger are also presented.The $b$-jet tagging
efficiency, the $c$-jet tagging efficiency and the mistag rate for light
flavour jets in data have been measured with a number of complementary methods.
The calibration results are presented as scale factors defined as the ratio of
the efficiency (or mistag rate) in data to that in simulation. In the case of
$b$ jets, where more than one calibration method exists, the results from the
various analyses have been combined taking into account the statistical
correlation as well as the correlation of the sources of systematic
uncertainty.

29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
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
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio