Constraints on the quark mixing matrix with vector-like quarks
نویسندگان
چکیده
منابع مشابه
Constraints on the mixing of a fourth family of quarks.
This paper studies the constraints on the mixing of a possible fourth family of quarks. A mixing angle convention is introduced in which sij sin 8ij represents to a good approximation the ij element of the quark mixing matrix (; < j). A range of parameters is found, ~14 < 0.06, ~24 < 0.1; s14s24 O(10V4 10A3) and/or ~14~34 2 O(10m2), f or which the contribution of the fourth family to the KL KS ...
متن کاملCKM quark - mixing matrix 1 11 . THE CABIBBO - KOBAYASHI - MASKAWA QUARK - MIXING MATRIX
Revised 1999 by F.J. Gilman (Carnegie-Mellon University), K. Kleinknecht and B. Renk (Johannes-Gutenberg Universität Mainz). In the Standard Model with SU(2) × U(1) as the gauge group of electroweak interactions, both the quarks and leptons are assigned to be left-handed doublets and right-handed singlets. The quark mass eigenstates are not the same as the weak eigenstates, and the matrix relat...
متن کاملThird Generation Seesaw Mixing with new Vector-Like Weak-Doublet Quarks
We present a class of models with a third generation seesaw mixing with new vector-like weak-doublet quarks. We analyze a low-energy phenomenology and present several strong dynamics, high-energy realizations of these models. In the Topcolor type scenario, named Top-Bottom Color, we obtain an effective, composite two Higgs doublet model where the third generation isospin splitting is introduced...
متن کاملComments on the Characteristic Measurables of the Quark Mixing Matrix
Within the standard electroweak model we point out that the 3×3 matrix of quark mixing is characterized by three universal (rephasing-invariant) quantities: one of them for CP violation and the other two for off-diagonal asymmetries. Unitarity of the quark mixing matrix can in principle be tested through a variety of measurements which are irrelevant to the existence of CP -violating effects. P...
متن کاملdeterminant of the hankel matrix with binomial entries
abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.
15 صفحه اولذخیره 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: Nuclear Physics B
سال: 2020
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2020.115208