ISSN:
1434-601X
Keywords:
13.40.Ks
;
14.80.Dq
;
23.40.Bw
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Superallowed Fermi beta-decay is analyzed in the light of new experimental data, new methodology and new treatment of the radiative and charge-dependent corrections. The following values are recommended:G v /(ħc) 3=(1.13769±0.00091)×10−5 GeV−2;G v * /(ħc) 3 =(1.15128±0.00084) × 10−5GeV−2 whereG v is purged of radiative corrections suitably for combining withG μ to gain: ¦V ud ¦=0.97539±0.00080 which leads to:¦V ud ¦ 2 +¦V us ¦ 2 +¦V ub ¦2=1.0000+0.0017 and whereG V * is the operational constant, incorporating the inner radiative correction, suitable for use in ordinary nuclear physics. It is noted that present results on the beta-decay of the neutron, when confronted by the above values, are inconclusive as to possible conflict with the minimal standard model and that judgement as to, for example, the intervention of a right-handed sector, should be suspended. The valueG A * =1.2657±0.0030 is also recommended.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01289601
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