Improved experimental layout for dipole moment measurements at the LHC

TL;DR

This paper proposes a novel experimental layout using crystal lenses to significantly improve the efficiency of measuring dipole moments of charm and bottom baryons at the LHC, addressing previous statistical limitations.

Contribution

It introduces an innovative crystal lens-based setup that enhances trapping efficiency, potentially enabling first-time measurements of baryon dipole moments at the LHC.

Findings

Efficiency improved by about 15 times for 2-cm targets

Efficiency improved by about 35 times for 5-mm targets

Technical feasibility and constraints discussed

Abstract

The electric and magnetic dipole moment of charm and bottom baryons can be measured for the first time by using bent crystal technology at the LHC. The experimental method, proposed in recent years, suffers from limited statistics, which dominates the uncertainty of the measurement. In this work, we present an alternative experimental layout, based on the use of crystal lenses, that improves the trapping efficiency by about a factor 15 (35) for a 2-cm (5-mm) target with respect to the nominal layout, with plain crystal faces. The efficiencies are evaluated taking into account the constraints from the LHC machine, and the technical challenges to realize this novel experimental method are discussed.