Foreword

This page is dedicated to the analyses relative to the measurement of the electric and magnetic dipole moments (EDM and MDM, respectively) of strange and charmed baryons at LHCb. The concept and prospects of the analyses are presented in this document. As these analyses share much common ground and theoretical context, this page gathers all the information that is relevant to all the analyses.


Overview

Permanent electric dipole moments of fundamental particles provde powerful probes for physics beyond the Standard Model. The strong magnetic field of the LHCb experiment can be used to induce spin precession of $\Lambda$ baryons that decay inside of it, thus allowing to measure both the EDM and the MDM of this particle. Additionally, a test of the $CPT$ symmetry can be performed by comparing the MDMs of the $\Lambda$ and $\overline{\Lambda}$ baryons.

The electrical and magnetic moments of the charmed baryons $\Lambda_{c}^{+}$ and $\Xi_{c}^{+}$ can be measured by producing them using a fixed-target experiment in front of the LHCb detector, and channeling these baryons through a bent crystal. The strong electomagnetic field between atomic planes in the crystal induces a spin precession of these baryons, allowing to measure their moment.

Analyses

Measurement of the $\Lambda$ polarization

Under construction.

Amplitude analyses of charmed baryon decays

Under construction.

Studies related to the fixed-target experiment

Under construction.

Trigger lines

Under construction.

Stripping lines

Under construction.

List of presentations

Presentations relative to particular analyses are shown in their respective TWiki pages.

Charm WG meeting (08/02/2017) link

 

List of publications

Under construction.

-- LouisHenry - 2017-02-02

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Topic revision: r4 - 2017-02-08 - LouisHenry
 
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