[Triumf-seminars] TRIUMF Colloquium today at 14:00

[TRIUMF Seminars]

Date/Time: Thu 2011-11-03 at 14:00

Location:  NRC Building Rm 1310

Speaker:   Oscar Naviliat-Cuncic (NSCL, Michigan State University)

Title:     Measurements of the beta-neutrino angular correlation in Gamow-Teller decays

Abstract: Precision measurements of the beta-neutrino angular correlation in nuclear beta decay provide sensitive means to search for possible exotic couplings contributing to the weak interaction, regardless of their space and time transformation properties. Following the pioneering measurements carried out with Magneto-Optical Traps at TRIUMF and Berkeley, in pure Fermi and in mixed transitions respectively, a new measurement of the beta-neutrino angular correlation in the pure Gamow-Teller decay of 6He has been carried out at GANIL with ions confined in a transparent Paul trap. In this presentation I will first describe the status of this experiment, including recent measurements of ionization probabilities of recoiling ions due to shake-off following beta decay as well as measurements in 35Ar decay. I will then present an indirect beta-gamma correlation technique, to be applied to He8 decay, as a possible alternative route to atom and ions traps for further improving the experimental precision on the beta-neutrino angular correlation in Gamow-Teller transitions.

Stimulants available outside the TRIUMF cafeteria 30 minutes before the talk.

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