Evidence against solar influence on nuclear decay constants
نویسندگان
چکیده
منابع مشابه
Evidence against solar influence on nuclear decay constants
The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements of mono-radionuclide sources were performed over periods from 200 days up to four decades at 14 laboratories across the globe. Residuals from the exponential nuclear decay curves were inspected for annual oscillations. Systematic deviations...
متن کاملHidden evidence of non-exponential nuclear decay
The framework to describe natural phenomena at their basics being quantum mechanics, there exist a large number of common global phenomena occurring in different branches of natural sciences. One such global phenomenon is spontaneous quantum decay. However, its long time behaviour is experimentally poorly known. Here we show, that by combining two genuine quantum mechanical results, it is possi...
متن کاملMeson Supermultiplet Decay Constants
We use a covariant supermultiplet theory to determine the primary coupling constant associated with several types of two-body meson decay. Despite the diverse range of decays considered the primary coupling constant is surprisingly uniform. We envisage the extension of the techniques to heavy quark cases, including as preliminary examples the calculation of the D * + and D * 0 total decay width...
متن کاملDecay Constants fD ∗ s
We calculate the decay constant of Ds and D ∗ s with B̄ 0 → D+l−ν and B̄0 → D+D s decays. In our analysis we assume the factorization ansatz and use two different form factor behaviours (constant and monopole-type) for F0(q 2). We also consider the QCDpenguin contributions in hadronic decays within the NDR renormalization scheme in a NLO calculation. We estimate the decay constant of the Ds meson...
متن کاملHeavy - light decay constants on the lattice
We present results for the leptonic decays of heavy-light mesons in the quenched approximation and a preliminary result for fD s with dynamical fermions for N f = 2. We examine the systematic effects of extrapolating the decay constants from the charm to the bottom quark mass, and find this extrapolation to be under control. We present a preliminary result for f N f =2 Ds and compare to f N f =...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2016
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2016.08.038