Silicon tracker PID suppresses backgrounds well for low-momentum b-tagging but requires drift-chamber cluster counting for high-momentum s-jet tagging, with 30 ps timing needed to improve rare b to s decay contamination by an order of magnitude over kinematics alone.
Becket al., Constraints on New Physics from de- cays of polarizedΛ 0 b baryons at the FCC-ee (2025), arXiv:2510.02225 [hep-ex]
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Flavor-physics benchmarks for tracker-based particle identification at the FCC-ee
Silicon tracker PID suppresses backgrounds well for low-momentum b-tagging but requires drift-chamber cluster counting for high-momentum s-jet tagging, with 30 ps timing needed to improve rare b to s decay contamination by an order of magnitude over kinematics alone.