# New algorithms for identifying the flavour of $B^0$ mesons using pions and protons

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). New algorithms for identifying the flavour of $B^0$ mesons using pions and protons. European Physical Journal C - Particles and Fields, C77(4):238.

## Abstract

Two new algorithms for use in the analysis of pp collision are developed to identify the flavour of $B^0$ mesons at production using pions and protons from the hadronization process. The algorithms are optimized and calibrated on data, using $B^0 \to D^−\pi^+$ decays from pp collision data collected by LHCb at centre-of-mass energies of 7 and 8 TeV . The tagging power of the new pion algorithm is 60% greater than the previously available one; the algorithm using protons to identify the flavour of a $B^0$ meson is the first of its kind.

## Abstract

Two new algorithms for use in the analysis of pp collision are developed to identify the flavour of $B^0$ mesons at production using pions and protons from the hadronization process. The algorithms are optimized and calibrated on data, using $B^0 \to D^−\pi^+$ decays from pp collision data collected by LHCb at centre-of-mass energies of 7 and 8 TeV . The tagging power of the new pion algorithm is 60% greater than the previously available one; the algorithm using protons to identify the flavour of a $B^0$ meson is the first of its kind.

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