Measurement of the Gamow-Teller Branching Ratio in the {beta}-Decay of {sup 21}Na

Journal Article · Wed Jan 28 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087046· OSTI ID:21255441

Achouri, N L; Angelique, J -C; Ban, G; Lienard, E; Naviliat-Cuncic, O; Orr, N A ^[1]; Bastin, B ^[1]; Blank, B; Giovinazzo, J ^[2]; Dean, S; Dendooven, P G; Jungmann, K; Rogachevskiy, A; Sohani, M; Wilschut, H ^[3]; Grevy, S ^[4]; Laurent, B ^[1]; Traykov, E ^[3]

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1. LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen (France)
2. CENBG, Universite Sciences et Technologies Bordeaux 1, CNRS/IN2P3, Gradignan (France)
3. Kernfysisch Versneller Instituut, 9747 AA-Groningen (Netherlands)
4. GANIL, CEA/DSM-CNRS/IN2P3, Caen (France)

The {beta}-decay branching ratio of the GT transition in {sup 21}Na to the first excited state in {sup 21}Ne has been measured. The value obtained of 4.93(20)% is in agreement with the most recent measurement and with the value adopted so far. This confirms that the branching ratio is not the source of discrepancy in a previous measurement of {beta}-v correlation coefficient which exhibited a 3{sigma} difference with respect to the Standard Model prediction.

• OSTI ID: 21255441
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1090; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BRANCHING RATIO
EXCITED STATES
GAMOW-TELLER RULES
NEON 21
NUCLEOSYNTHESIS
SODIUM 21
STANDARD MODEL