APS Logo

CeNTREX : A Search for Time Reversal Symmetry Violation using ^{205}TlF molecules

POSTER

Abstract

The Cold molecule Nuclear Time-Reversal EXperiment (CeNTREX) aims to search for the fundamental time-reversal symmetry (T) and parity (P) violation in the hadronic sector. The Standard Model provides for T (and hence CP) symmetry violation in the quark mixing (CKM) matrix, but this is not sufficient to generate the magnitude of the baryon asymmetry observed in the universe. Many Standard Model extensions propose additional sources of T-violation, and Schiff moments and electric dipole moments (EDMs) are excellent probes free of Standard Model backgrounds. CeNTREX utilizes shifts in nuclear magnetic resonance frequencies of the ^{205}Tl nucleus in highly polarized thallium fluoride (TlF) molecules to search for these T violating interactions. With the expected experimental sensitivity, we would be able to set competitive bounds on $\theta_{\rm QCD}, quark chromo electric dipole moments (cEDMs), and the proton EDM. CeNTREX uses modern methods including a cryogenic molecular beam source, optical state preparation and detection, and coherent quantum state manipulation. This poster provides an overview of the experiment and the techniques involved, its current status and recent progress, as well as the upcoming developments and anticipated timeline for a nuclear Schiff moment measurement.

Presenters

  • Yuanhang Yang

    University of Chicago

Authors

  • Yuanhang Yang

    University of Chicago

  • David DeMille

    University of Chicago, University of Chicago and Argonne National Laboratory

  • Oliver O Grasdijk

    Argonne National Laboratory

  • David M Kawall

    University of Massachusetts Amherst

  • Jianhui Li

    Columbia University

  • Tristan Winick

    University of Massachusetts Amherst

  • Tanya Zelevinsky

    Columbia University

  • Perry Zhou

    Columbia University

  • Jakob Kastelic

    Yale University