10C Superallowed Branching Ratio and the Cabibbo-Kobayashi-Maskawa Matrix Unitarity
نویسندگان
چکیده
منابع مشابه
Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix
Using the on-shell scheme and the general linear Rξ gauge we have calculated the one-loop amplitude W + → uI d̄j . In agreement with previous work we have shown that the Cabibbo-Kobayashi-Maskawa (CKM) matrix ought to be renormalized. We show how to renormalize the CKM matrix and, at the same time, obtain a gauge independent W decay amplitude. PACS number(s): 11.10.Gh, 12.15.-y, 12.15.Ff, 12.15....
متن کاملGlobal Fits to the Cabibbo-kobayashi-maskawa Matrix: Unitarity Condition Method versus Standard Unitarity Triangles Approach
The aim of the paper is to make a comparison between the unitarity condition method and the standard version of the unitarity triangle approach by using as parameters four independent moduli |Uij |. This choice is motivated by the measurability property and leads to a simple criterion for the separation of unistochastic matrices from the double stochastic ones, whose fulfillment is the key poin...
متن کاملSemileptonic hyperon decays and Cabibbo-Kobayashi-Maskawa unitarity.
Using a technique that is not subject to first-order SU(3) symmetry breaking effects, we determine the V(us) element of the Cabibbo-Kobayashi-Maskawa matrix from data on semileptonic hyperon decays. We obtain V(us)=0.2250(27), where the quoted uncertainty is purely experimental. This value is of similar experimental precision to the one derived from K(l3), but it is higher and thus in better ag...
متن کاملCabibbo-Kobayashi-Maskawa Matrix Unitarity Triangle and Geometry Origin of the Weak CP Phase
In this work, the postulation that weak CP phase originates in a certain geometry, is further discussed. According to this postulation, the weak CP phase is determined by three mixing angles. So, if we can determine experimentally three elements of the Cabibbo-KobayashiMaskawa (CKM) matrix, we can then determine the whole CKM matrix and correspondingly, the unitarity triangle. We find that the ...
متن کاملUnitarity condition method for global fits of the Cabibbo-Kobayashi-Maskawa matrix
We report on an exact method for global fits of the CKM matrix by using the necessary and sufficient conditions the data have to satisfy in order to find a unitary matrix compatible with them, and this method can be applied to both quark and lepton CKM matrices. The key condition writes −1 ≤ cos δ ≤ 1 where δ is the phase that encodes the CP violation, and it is obtained when one describes the ...
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: Physical Review Letters
سال: 1995
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.74.1521