Zobrazeno 1 - 10
of 383
pro vyhledávání: '"D.H. Wilkinson"'
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 543:497-501
A final analysis of J π = 0 + → 0 + super-allowed Fermi transitions yields | V ud | 2 = 0.9500 ± 0.0007 ; | V ud | 2 + | V us | 2 + | V ub | 2 = 0.9999 ± 0.0011 with the operational vector coupling constant G V * / ( ℏ c ) 3 = ( 1.15052 ± 0.0
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 526:386-390
A re-analysis of J π =0 + → 0 + super-allowed Fermi transitions, following Wilkinson (Nucl. Instr. and Meth. A 488 (2002) 654), using further input and a more-detailed procedure yields | V ud | 2 =0.9500±0.0009; | V ud | 2 +| V us | 2 +| V ub | 2
Autor:
D.H. Wilkinson
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 29:189-196
Analysis of the super-allowed Fermi beta-decay of nine bodies from 10C through 54Co yields |Vud|2 = 0.9514 ± 0.0014 and a unitarity test of the first row of the Cabibbo–Kobayashi–Maskawa matrix of |Vud|2 + |Vus|2 + |Vub|2 = 0.9996 ± 0.0017 in a
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 495:65-68
Simultaneous analysis of: (i) super-allowed Fermi beta-decay; (ii) the lifetime of the neutron; (iii) angular relationships in neutron beta-decay permits the extraction of best values for the operational coupling constants: G V ∗ /(ℏc) 3 =(1.1512
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 488:654-669
Analysis of J π =0 + →0 + super-allowed Fermi transitions is limited with respect to the precision of its outcome in terms of the Fermi coupling constant neither by the accuracy of the experimental input data nor by the confidence with which the r
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 469:286-291
ν ( ν ) p elastic scattering is sensitive to the magnitude, Δs, of the strange quark's presence within the proton. But it is also sensitive to the strength of second-class currents so we must be assured that the effect of such currents, having reg
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 455:656-659
Discussion of the effect of second-class currents in complex nuclei necessarily involves consideration of three separate contributions stemming from: (i) NNeν and NNeν vertices, the latter induced by exchange pions, that are characterized, respecti
Autor:
D.H. Wilkinson
Publikováno v:
The European Physical Journal A. 7:307-315
Second-class currents, i.e those of irregular G-parity in the definition of Weinberg, induce differences between the ft -values for positive and negative electron emission in the mirror beta-decay of complex nuclei and, together with weak magnetism,
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 435:446-455
The mechanism of the self-quenching Geiger counter has been understood, in general terms, for over half a century. However, quantitatively, one aspect of the discharge has not been satisfactorily accounted for. This is the fraction of the signal that
Autor:
D.H. Wilkinson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 424:575-579
Convergence of the recoil-order expansion for the rate of semi-leptonic hyperon decay is investigated in detail for the illustrative case of the leading pure vector element f1.