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

N.L. Achouri; J.C. Angélique; G. Ban; B. Bastin; B. Blank; S. Dean; P. G. Dendooven; J. Giovinazzo; S. Grévy; K. Jungmann; B. Laurent; E. Liénard; O. Naviliat-Cuncic; N.A. Orr; A. Rogachevskiy; M. Sohani; E. Traykov; H. Wilschut

HAL : in2p3-00368796, version 1

DOI : 10.1063/1.3087046

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13th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Cologne : Allemagne (2008)

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

N.L. Achouri¹, J.C. Angélique¹, G. Ban¹, B. Bastin¹, B. Blank², S. Dean, P. G. Dendooven, J. Giovinazzo², S. Grévy³, K. Jungmann, B. Laurent¹, E. Liénard¹, O. Naviliat-Cuncic¹, N.A. Orr¹, A. Rogachevskiy, M. Sohani, E. Traykov, H. Wilschut

(2009)

The beta-decay branching ratio of the GT transition in 21Na to the first excited state in 21Ne 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 3sigma difference with respect to the Standard Model prediction.

1 :	LPCC - Laboratoire de Physique Corpusculaire de Caen

2 :	CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

3 :	GANIL - Grand Accélérateur National d'Ions Lourds

équipe(s) de recherche : Interactions fondamentales
structure nucléaire

Thème(s)

Physique/Physique Nucléaire Expérimentale

Mot(s)-clé(s) : beta-decay – radioactive decay periods – nucleosynthesis


in2p3-00368796, version 1
http://hal.in2p3.fr/in2p3-00368796
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Contributeur : Michel Lion <>
Soumis le : Mardi 17 Mars 2009, 16:30:32
Dernière modification le : Mardi 30 Avril 2013, 14:53:19