Tracking charged $b$-hadrons: feasibility study of the use of inner trackers to improve $B^{+}_{(c)}$ reconstruction

TL;DR

This paper proposes a new method using inner tracking detectors to improve charged b-hadron decay reconstruction, potentially enhancing flavor physics studies at hadron colliders by enabling detection of otherwise unreconstructable decays.

Contribution

The study introduces a novel approach utilizing energy deposits in inner trackers to improve b-hadron decay reconstruction, supported by simulation results for various detector configurations.

Findings

Up to a few percent of B+ mesons leave two detectable deposits before decay.

The method's effectiveness depends on the detector configuration.

Results can guide future inner detector design for flavor physics.

Abstract

A method to improve the reconstruction of charged b-hadron decays is proposed that uses energy deposits left by the hadron in tracking detectors close to the production point. Performances are shown for different detector configurations and different number of deposits reconstructed, as obtained in simulation, for $b$-hadrons produced in high energy proton-proton collisions. It is shown that up to few percent of the $B^+$ mesons could leave two deposits before decaying, depending on the detector configuration. The presented results can inform the design of future inner detectors. This method could increase significantly the physics reach of flavour physics at hadron colliders, opening it to decays with missing particles and vertex information that are otherwise unreconstructable.