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SAIP2015 Proceeding published on 17 July 2016
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Monte Carlo simulations to obtain the weak magnetism term for 22Na beta decay

Presented by Mr. Lutendo PHUTHU on 1 Jul 2015 from 09:40 to 10:00
Type: Oral Presentation
Session: NPRP
Track: Track B - Nuclear, Particle and Radiation Physics

Abstract

The study of <sup>22</sup>Na beta decay offers an opportunity to test the Standard Model via measurements of the β-γ angular correlation. A previous measurement of this correlation yielded a non-zero value, indicating the need for a higher-order correlation to the decay, beyond the allowed V-A approximation. On assuming the Conserved Vector Current (CVC) hypothesis for weak interactions and using the magnetic dipole M1 width of the analog 2<sub>1</sub><sup>+</sup> state in <sup>22</sup>Na, one obtains an unexpectedly large "second-class" form factor that is in disagreement with the Standard Model prediction This talk describes an analysis of data obtained from a prior <sup>21</sup>Ne(p,γ) experiment to obtain the M1 width of the 2<sub>1</sub><sup>+</sup> state of interest in <sup>22</sup>Na. We aim to use the M1 width and an independent measurement of the β-γ angular correlation to obtain a higher order Standard-Model-allowed weak magnetism term, in an attempt to explain the observed discrepancy mentioned above. I will also describe some Monte Carlo simulations performed to extract E2/M1 mixing ratio from these data.

Award

Yes

Level

MSc

Supervisor

Prof Smarajit Triambak smarajit@gmail.com University of the Western Cape

Paper

No

Permission

Yes

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