25-29 January 2016
Bormio, Italy
Europe/Berlin timezone

Performance of the ALICE secondary vertex b-tagging algorithm

25 Jan 2016, 17:24
Bormio, Italy

Bormio, Italy

Poster Relativistic Heavy Ion Physics Monday Afternoon


Mr Lukas Kramarik (Czech Technical University in Prague)


Hard partons produced in the early stage of high-energy heavy-ion collisions suffer energy loss in the Quark-Gluon Plasma (QGP) via gluon radiation and elastic collisions while propagating through this medium. Jet reconstruction provides access to the kinematics of these partons. Reconstructed jets are therefore powerful tools to study the properties of the QGP. Theoretical models predict a dependence of the parton energy loss in the QGP on the color charge and the mass of the parton. Thus, the study of properties of beauty jets in comparison with that of light-flavour jets can reveal important information about the matter formed. Beauty-tagging algorithms rely on the properties of B hadrons, i.e. their long lifetime, large mass and large multiplicity of decay products. In this poster the b-tagging algorithm based on displaced secondary vertex topologies in p-Pb collisions with ALICE is described. We present Monte Carlo performance studies of the algorithm for reconstructed charged jets. The tagging efficiency, rejection rate and the correction of the smearing effects for the detector response are presented. Finally, the performance expected in LHC Run 3 is briefly discussed.

Primary author

Mr Lukas Kramarik (Czech Technical University in Prague)

Presentation Materials

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