Progress on the measurement of the francium anapole moment

POSTER

Abstract

We present the current status of the experimental effort towards the measurement of the anapole moment in francium. The anapole is a parity violating, time-reversal conserving nuclear moment that arises from the weak interaction among nucleons. The anapole moment is nuclear spin dependent (nsd) and sensitive to the configuration of nuclear structure. Our experimental scheme is to perform a direct measurement of the nsd parity violation, by driving a parity forbidden E1 transition between hyperfine ground states in a series of francium isotopes inside a blue detuned dipole trap at the electric anti-node of a microwave cavity. We explore theoretical aspects and experimental requirements on the possible tests using rubidium isotopes. The experiment will be at the ISAC radioactive beam facility of TRIUMF. Work supported by NSF and DOE USA, NSERC and NRC Canada, CONACYT Mexico.

Authors

  • Dong Sheng

    • Joint Quantum Institute, Department of Physics and NIST, University of Maryland
    • Joint Quantum Institute, NIST and University of Maryland

  • Jonathan Hood

    • Joint Quantum Institute, NIST and University of Maryland

  • Steven Lynam

    • Joint Quantum Institute, NIST and University of Maryland

  • Luis Orozco

    • JQI, Dept. Physics, University of Maryland and NIST, College Park, MD
    • University of Maryland, JQI, Physics
    • Joint Quantum Institute, Department of Physics and NIST, University of Maryland
    • University of Maryland
    • Joint Quantum Institute, NIST and University of Maryland

  • Eduardo Gomez

    • Universidad Aut\'onoma de San Luis Potos\'i, San Luis Potos\'i, M\'exico

  • Seth Aubin

    • Department of Physics, College of William \& Mary, Williamsburg, VA 23187, USA
    • College of William and Mary

  • Gerald Gwinner

    • University of Manitoba, Winnipeg, MB, Canada

  • John Behr

    • TRIUMF, Vancouver, BC, Canada

  • Matthew Pearson

    • TRIUMF, Vancouver, BC, Canada

  • Peter Jackson

    • TRIUMF, Vancouver, BC, Canada

  • Dan Melconian

    • Texas A\&M

  • Victor Flambaum

    • University of New South Wales
    • University of New South Wales, Sydney, Australia

  • Gene Sprouse

    • SUNY Stony Brook