Inclusive Flavour Tagging Algorithm

Abstract

Identifying the flavour of neutral $B$ mesons production is one of the most important components needed in the study of time-dependent $CP$ violation. The harsh environment of the Large Hadron Collider makes it particularly hard to succeed in this task. We present an inclusive flavour-tagging algorithm as an upgrade of the algorithms currently used by the LHCb experiment. Specifically, a probabilistic model which efficiently combines information from reconstructed vertices and tracks using machine learning is proposed. The algorithm does not use information about underlying physics process. It reduces the dependence on the performance of lower level identification capacities and thus increases the overall performance. The proposed inclusive flavour-tagging algorithm is applicable to tag the flavour of $B$ mesons in any proton-proton experiment.

5 pages, 5 figures, 17th International workshop on Advanced Computing and Analysis Techniques in physics research (ACAT-2016)

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• Observation of X(3872) production in pp collisions at sqrt(s)= 7 TeV
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Cited by in corpus (3)

• Machine Learning in High Energy Physics Community White Paper
• Improved measurement of $CP$ violation parameters in $B_s^0\to J/\psi K^{+}{K}^{-}$ decays in the vicinity of the $\varphi (1020)$ resonance
• Inclusive $B$-meson flavour-tagging algorithm at LHCb