arXiv subjects

M. Vysotsky

Publications and source records attributed to M. Vysotsky.

8 recordsLinked to original sources

arXiv2003

CKM matrix and CP violation in B-mesons

Planned as a review of CPV in B-mesons which covered recent B-factories results these lectures appeared to be a bit wider. It is not natural to be limited by direct CPV and that in mixing in B-mesons and not to speak about the analogous phenomena in K-mesons since it is very useful and interesting to study what is common and what is different in these systems and why. CKM matrix elements are extracted from K and B mixings and decays and the deviation from unitarity of CKM matrix may become a place in which New Physics will show up. So we discuss this simple and elegant piece of Standard Model as well.

hep-ph↗

arXiv2002

$μ_ν$

The present situation and hopes on bounding (founding) neutrino magnetic moment in future are reviewed.

hep-ph↗

arXiv2001

Is G a conversion factor or a fundamental unit?

By using fundamental units c, h, G as conversion factors one can easily transform the dimensions of all observables. In particular one can make them all ``geometrical'', or dimensionless. However this has no impact on the fact that there are three fundamental units, G being one of them. Only experiment can tell us whether G is basically fundamental.

physics.class-ph↗

arXiv1998

$d=5$ operators in SUSY GUT: fermion masses versus proton decay

In the minimal SU(5) SUSY GUT $d =5$ operators lead to $p\to K^+ ν$ decay with the proton life time of the order of $10^{28}$ years for the natural choice of the parameters of the theory. This value is in strong contradiction with experimental bound $τ_{p\to Kν} > 10^{32}$ years. $d=5$ operators are induced by colored Higgsino exchanges and are closely (through SU(5) and super symmetry) related to another wrong prediction of SU(5) SUSY GUT: $m_d /m_s = m_e /m_μ$. We demonstrate how in the model where reasonable pattern of quark and lepton masses and CKM mixing angles are obtained proton decay can be suppressed and proton life time can be close to the present experimental bound.

hep-ph↗

arXiv1997

Electroweak Working Group Report

The report summarizes the results of the activities of the Working Group on Precision Calculations for the Z Resonance at CERN during 1994.

hep-ph↗

arXiv1995

Implications of Heavy Top

Lecture at 23 ITEP Winter School. Manifestations of heavy top at low energies (K- and B-mesons) and high energies (Z and W physics) are discussed

hep-ph↗

arXiv1995

LEPTOP

This report consists of three parts. In Chapter 1 we present a brief description of the LEPTOP approach for the calculation of the radiative corrections in the Minimal Standard Model. The approach is based on the one-loop approximation with respect to the genuinely electroweak interaction for which simple explicit analytical formulae are valid. Starting from $G_μ, m_Z$ and $\barα\equiv α(m^2_Z)$ as the main input parameters, we consider all observables of the $Z$ boson decays and the mass of the $W$ boson on the same footing. The dressing with gluonic corrections is performed by using the results of calculations published by other authors. In Chapter 2 theoretical uncertainties inherent to our approach and hence to the LEPTOP computer program are analyzed. In Chapter 3 we describe the Fortran code of LEPTOP. This code can be obtained on request from rozanov@afsmail.cern.ch. This document can be accessed on http://cppm.in2p3.fr/leptop/intro_leptop.html by WWW users.

hep-ph↗

arXiv1994

Electroweak theory at {\boldmath $Z^0$} and above

We present a simple method for considering radiative corrections. Precision data are well described by an adequate Born approximation and only the first evidence for deviations from the tree level formulas and the presence of the loop effects emerge.

hep-ph↗