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arXiv · 1605.00143

Performance of the ALICE secondary vertex b-tagging algorithm

Gyulnara Eyyubova·Lukáš Kramárik
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Abstract

The identification of jets originating from beauty quarks in heavy-ion collisions is important to study the properties of the hot and dense matter produced in such collisions. A variety of algorithms for b-jet tagging was elaborated at the LHC experiments. They rely on the properties of B hadrons, i.e. their long lifetime, large mass and large multiplicity of decay products. In this work, the b-tagging algorithm based on displaced secondary-vertex topologies is described. We present Monte Carlo based performance studies of the algorithm for charged jets reconstructed with the ALICE tracking system in p-Pb collisions at $\sqrt{s_\text{NN}}$ = 5.02 TeV. The tagging efficiency, rejection rate and the correction of the smearing effects of non-ideal detector response are presented.

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Gyulnara Eyyubova, Lukáš Kramárik. 2016-04-30. Performance of the ALICE secondary vertex b-tagging algorithm. https://doi.org/10.1051/epjconf%2F201612605004

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