arXiv subjects

I. V. Gaidaenko

Publications and source records attributed to I. V. Gaidaenko.

3 recordsLinked to original sources

arXiv2000

On the production of a lepton pair in the collision of ultrarelativistic neutral particle with nonzero magnetic moment with nuclei

Explicit formulas which describe muon pair production in reaction $γν\to μ^+ μ^- ν$ through neutrino magnetic moment are obtained and used to derive in the leading approximation cross section of muon pair production in $νN$-scattering due to neutrino magnetic moment. This cross section appears to be proportional to $\log^4 E_ν$. Comparison with experimental data on tridents production provides an upper bound $μ_{ν_μ} < 4*10^{-8} μ_B$, which is approximately two orders of magnitude weaker than that from $ν_μe$ elastic scattering data.

hep-ph↗

arXiv1999

Enhanced electroweak radiative corrections in SUSY and precision data

Enhanced radiative corrections generated in SUSY extensions of the Standard Model make the fit of the precision data ($Z$-boson decay parameters and $W$-boson mass) worse. This negative effect is washed out for heavy enough squarks due to decoupling property of SUSY models. We find that even for light squarks the enhanced radiative corrections can be small. In this case substantial $\tilde{t}_L \tilde{t}_R$ mixing is necessary.

hep-ph↗

arXiv1998

Enhanced Electroweak Radiative Corrections in SUSY: Gluon-free Observables

Large top quark mass is responsible for the enhancement of the oblique radiative corrections in SUSY models. We present the analytical formulas for these corrections to the $W$-boson mass $m_W$ and to $Z$ $l^+ l^-$ coupling constants. The comparison with the result of the Standard Model fit is made.

hep-ph↗