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Hyperfine Interactions

, Volume 225, Issue 1–3, pp 193–196 | Cite as

The MTV experiment: a test of time reversal symmetry using polarized 8Li

  • J. Murata
  • H. Baba
  • J. A. Behr
  • Y. Hirayama
  • T. Iguri
  • M. Ikeda
  • T. Kato
  • H. Kawamura
  • R. Kishi
  • C. D. P. Levy
  • Y. Nakaya
  • K. Ninomiya
  • N. Ogawa
  • J. Onishi
  • R. Openshaw
  • M. Pearson
  • E. Seitaibashi
  • S. Tanaka
  • R. Tanuma
  • Y. Totsuka
  • T. Toyoda
Article

Abstract

The MTV (Mott Polarimetry for T-Violation Experiment) experiment at TRIUMF-ISAC (Isotope Separator and ACcelerator), which aims to achieve the highest precision test of time reversal symmetry in polarized nuclear beta decay by measuring a triple correlation (R-correlation), is motivated by the search for a new physics beyond the Standard Model. In this experiment, the existence of non-zero transverse electron polarization is examined utilizing the analyzing power of Mott scattering from a thin metal foil. Backward scattering electron tracks are measured using a multi-wire drift chamber for the first time. The MTV experiment was commissioned at ISAC in 2009 using an 80 % polarized 8Li beam at 107 pps, resulting in 0.1 % statistical precision on the R-parameter in the first physics run performed in 2010. Next generation cylindrical drift chamber (CDC) is now being installed for the future run.

Keywords

Time reversal symmetry Test of standard model Electron polarimeter 

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • J. Murata
    • 1
  • H. Baba
    • 2
  • J. A. Behr
    • 3
  • Y. Hirayama
    • 4
  • T. Iguri
    • 1
  • M. Ikeda
    • 1
  • T. Kato
    • 5
  • H. Kawamura
    • 5
  • R. Kishi
    • 1
  • C. D. P. Levy
    • 3
  • Y. Nakaya
    • 1
  • K. Ninomiya
    • 1
  • N. Ogawa
    • 1
  • J. Onishi
    • 1
  • R. Openshaw
    • 3
  • M. Pearson
    • 3
  • E. Seitaibashi
    • 1
  • S. Tanaka
    • 1
  • R. Tanuma
    • 1
  • Y. Totsuka
    • 1
  • T. Toyoda
    • 1
  1. 1.Department of PhysicsRikkyo UniversityTokyoJapan
  2. 2.Nishina CenterRIKENSaitamaJapan
  3. 3.TRIUMFVancouverCanada
  4. 4.KEKTsukubaJapan
  5. 5.Cyclotron and Radioisotope CenterTohoku UniversityMiyagiJapan

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