M. Dubinin
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View article: Dark matter mixing within the seesaw type II mechanism in the left-right symmetric model
Dark matter mixing within the seesaw type II mechanism in the left-right symmetric model Open
The seesaw type II mechanism is considered within the framework of a left-right chiral model with a gauge group $SU(2)_L\times SU(2)_R\times U(1)$, the lepton sector of which includes three generations of heavy Majorana neutrinos. The depe…
View article: Lepton universality in a model with three generations of sterile Majorana neutrinos
Lepton universality in a model with three generations of sterile Majorana neutrinos Open
The extension of the Standard Model lepton sector by three right-handed Majorana neutrinos [heavy neutral leptons (HNLs)] with masses up to GeV scale is considered. While the lightest heavy neutral lepton is the dark matter particle with m…
View article: Possible Search for Majorana Neutrinos at Future Lepton Colliders
Possible Search for Majorana Neutrinos at Future Lepton Colliders Open
We discuss the process $${{\ell }^{ + }}{{\ell }^{ - }} \to N{{W}^{ \pm }}{{\ell }^{ \mp }}$$ , where N is a heavy Majorana neutrino and $$\ell = e,\mu $$ . Large cross sections are expected for these processes at high center-of-mass energ…
View article: A possible search for Majorana neutrinos at future lepton colliders
A possible search for Majorana neutrinos at future lepton colliders Open
We discuss the process $\ell^+\ell^- \to N W^{\pm} \ell^{\mp}$, where $N$ is a heavy Majorana neutrino and $\ell = e, μ$. Large cross sections are expected for these processes at high center-of-mass energies, which can be reached at future…
View article: Non-Minimal Approximation for the Type-I Seesaw Mechanism
Non-Minimal Approximation for the Type-I Seesaw Mechanism Open
A non-minimal approximation for effective masses of light and heavy neutrinos in the framework of a type-I seesaw mechanism with three generations of sterile Majorana neutrinos which recover the symmetry between quarks and leptons is consi…
View article: On perturbative unitarity in the extended MSSM Higgs sector
On perturbative unitarity in the extended MSSM Higgs sector Open
Higgs sector of the minimal supersymmetric standard model (MSSM) extended by dimension-six operators, which are loop contributions in the expansion of the Coleman-Weinberg type potential, is considered. The presence of such additional cont…
View article: A light CP-odd Higgs boson of the MSSM Higgs sector extended by dimension-six operators
A light CP-odd Higgs boson of the MSSM Higgs sector extended by dimension-six operators Open
The possibility of identification of an observable CMS $μ^+ μ^-$ excess at 28 GeV in the channel $pp\to μ^+ μ^- b \bar b$ at $\sqrt{s}$=8 TeV and 13 TeV as a manifestation of one of the minimal supersymmetric standard model (MSSM) Higgs bo…
View article: MSSM scenarios with a light CP-odd Higgs boson
MSSM scenarios with a light CP-odd Higgs boson Open
The possibility of the presence of a light pseudoscalar with the mass of 28 GeV in the MSSM Higgs sector extended by dimension-six operators is analyzed. The perturbative unitarity and vacuum stability constraints are discussed. Tree-level…
View article: Measurement of Jet Substructure Observables in tt¯Events from Proton-Proton Collisions at √s = 13 TeV
Measurement of Jet Substructure Observables in tt¯Events from Proton-Proton Collisions at √s = 13 TeV Open
A measurement of jet substructure observables is presented using t¯t events in the lepton þ jets channel from proton-proton collisions at ffiffiffi sp ¼ 13 TeV recorded by the CMS experiment at the LHC, corresponding to an integrated lumin…
View article: MSSM inflation and cosmological attractors
MSSM inflation and cosmological attractors Open
Inflationary scenarios motivated by the minimal supersymmetric standard model (MSSM) where five scalar fields are non-minimally coupled to gravity are considered. The potential of the model and the function of non-minimal coupling are poly…
View article: Brightness and uniformity measurements of plastic scintillator tiles at the CERN H2 test beam
Brightness and uniformity measurements of plastic scintillator tiles at the CERN H2 test beam Open
We study the light output, light collection efficiency and signal timing of a variety of organic scintillators that are being considered for the upgrade of the hadronic calorimeter of the CMS detector. The experimental data are collected a…
View article: Measurement of the Λ$_{b}$ polarization and angular parameters in Λ$_{b}$ → J/ψΛ decays from pp collisions at √s = 7 and 8 TeV
Measurement of the Λ$_{b}$ polarization and angular parameters in Λ$_{b}$ → J/ψΛ decays from pp collisions at √s = 7 and 8 TeV Open
An analysis of the bottom baryon decay Λb → J=ψ ð→ μþ μ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at √s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Co…
View article: Radioactive source calibration test of the CMS Hadron Endcap Calorimeter test wedge with Phase I upgrade electronics
Radioactive source calibration test of the CMS Hadron Endcap Calorimeter test wedge with Phase I upgrade electronics Open
The Phase I upgrade of the CMS Hadron Endcap Calorimeters consists of new photodetectors (Silicon Photomultipliers in place of Hybrid Photo-Diodes) and front-end electronics. The upgrade will eliminate the noise and the calibration drift o…
View article: CompHEP: developments and applications
CompHEP: developments and applications Open
New developments of the CompHEP package and its applications to the top quark and the Higgs boson physics at the LHC collider are reviewed. These developments were motivated mainly by the needs of experimental searches of DO (Tevatron) and…
View article: Radiative corrections to Higgs boson masses for the MSSM Higgs potential with dimension-six operators
Radiative corrections to Higgs boson masses for the MSSM Higgs potential with dimension-six operators Open
In the framework of the effective field theory approach to heavy\nsupersymmetry radiative corrections in the Higgs sector of the Minimal\nSupersymmetric Standard Model (MSSM) for the effective potential decomposition\nup to the dimension-s…
View article: Vacuum stability with the effective six-pointed couplings of the Higgs bosons in the heavy supersymmetry
Vacuum stability with the effective six-pointed couplings of the Higgs bosons in the heavy supersymmetry Open
\nConsistent and phenomenologically successful scenarios of the Minimal Supersymmetric Standard Model (MSSM) include the Higgs potential which is positively defined at large fields and has two minima, one of them is true and stable vacuum …
View article: Post-Higgs THDM scenarios associated with the new diphoton resonance data
Post-Higgs THDM scenarios associated with the new diphoton resonance data Open
\nThe CP-even and CP-odd scalar states of the two-Higgs-doublet model (THDM) and the Higgs sector of theMinimal Supersymmetric StandardModel (MSSM), with properties which could lead to the 750 GeV excess in the γγ invariant mass distributi…
View article: New Physics search in the processes of the electroweak top quark production
New Physics search in the processes of the electroweak top quark production Open
\nThe processes involving single top quark production have an electroweak nature with unique properties. They are very interesting from both theoretical and experimental points of view. The article contains a brief overview of possible “Ne…