Weak interaction studies with an on-line Penning trap mass spectrometer

✍ Scribed by G. Savard; R.C. Barber; F. Buchinger; J.E. Crawford; X. Feng; S. Gulick; G. Hackman; J.C. Hardy; J.K.P. Lee; R.B. Moore; K.S. Sharma; J. Uusitalo

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 373 KB
• Volume: 654
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)88581-4

✦ Synopsis

Superallowed [3-decays are a sensitive probe of the fundamental aspects of the weak interaction. Such decays are used to stringently test the CVC hypothesis, deduce a precise value of the weak vector coupling constant, test the unitarity of the CKM matrix and look for deviation from the V-A structure for the weak interaction. The ability to efficiently capture and store short-lived superallowed beta-emitters in ion traps will help to elucidate discrepancies in the most precise unitarity test of the CKM matrix and tighten the present limits on interactions outside the standard V-A form.

1. Introduction

Superallowed 0 ÷ to 0 ÷ [3-decays are compelling because of their simplicity. The axialvector decay strength is zero for such decays, so the measured ft values are directly related to the weak vector coupling constant through the following equation:[ 1] K Ft= ft(l+8.