3-7 July 2017
Africa/Johannesburg timezone

High precision branching ratio measurement in <sup>19</sup>Ne beta decay

6 Jul 2017, 15:00
20m
A406 (Engineering Building 51)

A406

Engineering Building 51

Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics 1

Speaker

Ms Bernadette Rebeiro (University of the Western Cape)

Description

At present there are several large scale experiments ongoing world-wide that aim to find experimental evidence of physics beyond the standard model (SM). Most of these experiments involve either deep underground low-background measurements or high-energy collider physics. An alternative method to look for signatures of new physics is via precision tests of fundamental symmetries assumed in the model. Precise measurements of observables such as decay rates and angular correlations in nuclear beta decays can be used to stringently test the assumed symmetries in the SM and to probe for exotic couplings, beyond the established V-A (vector – axial vector) picture of weak interactions. In this presentation, we describe the analysis of data from a previous experiment performed at TRIUMF (Canada's National Laboratory for Particle and Nuclear Physics) to obtain the superallowed branching ratio for the beta decay of 19Ne to 19F using a radioactive ion beam. Together with a previously measured beta asymmetry parameter, the implications of our result pertaining to searches for right-handed weak interactions will be briefly discussed.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

yes

Main supervisor (name and email)<br>and his / her institution

Smarajit Triambak, smarajit@gmail.com, University of the Western Cape, South Africa

Primary author

Ms Bernadette Rebeiro (University of the Western Cape)

Co-authors

Ms Phumzile Mabika (University of the Western Cape) Smarajit Triambak (University of the Western Cape) TRIUMF 8pi collaboration (TRIUMF, Vancouver, Canada)

Presentation Materials

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