47 citations · 267 across the 20 of their papers we have counts for
20 papers
Suppression exponent for multiparticle production in theory
S. V. Demidov, B. R. Farkhtdinov, D. G. Levkov
We compute the probability of producing particles from few colliding particles in the unbroken -dimensional theory. To this end we numerically implement semiclass…
Numerical study of multiparticle production in theory: comparison with analytic results
S. V. Demidov, B. R. Farkhtdinov, D. G. Levkov
We develop a numerical method to compute the probabilities of multiparticle production in weakly coupled scalar theories. Our technique is based on D.T. Son's semiclassical method…
Gravitational waves from first-order electroweak phase transition in a model with light sgoldstinos
S. Demidov, D. Gorbunov, E. Kriukova
We study previously unexplored possibility of triggering the first order electroweak phase transition (EWPT) by interactions of the Standard Model (SM) particles with the sector re…
Light hidden photon production in high energy collisions
S. Demidov, S. Gninenko, D. Gorbunov
The visible and dark sectors of particle physics can be connected via kinetic mixing between ordinary and hidden photons. If the latter is light its production in high energy colli…
Gravitational waves from phase transition in split NMSSM
S. V. Demidov, D. S. Gorbunov, D. V. Kirpichnikov
We discuss gravitational wave signal from the strongly first order electroweak phase transition in the split NMSSM. We find that for sets of parameters predicting successful electr…
Non-standard interactions and neutrinos from dark matter annihilation in the Sun
S. V. Demidov
We perform an analysis of the influence of non-standard neutrino interactions (NSI) on neutrino signal from dark matter annihilations in the Sun. Taking experimentally allowed benc…
Dark matter constraints from an observation of dSphs and the LMC with the Baikal NT200
A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov +45
In present analysis we complete search for a dark matter signal with the Baikal neutrino telescope NT200 from potential sources in the sky. We use five years of data and look for n…
Lepton flavor-violating decays of the Higgs boson from sgoldstino mixing
S. V. Demidov, I. V. Sobolev
We study lepton flavor violation in a class of supersymmetric models with light sgoldstino - scalar superpartner of Goldstone fermions responsible for spontaneous supersymmetry bre…
A search for neutrino signal from dark matter annihilation in the center of the Milky Way with Baikal NT200
A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov +47
We reanalyze the dataset collected during the years 1998--2003 by the deep underwater neutrino telescope NT200 in the lake Baikal with the low energy threshold (10 GeV) in searches…
Baikal-GVD: first cluster Dubna
A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov +47
In April 2015 the demonstration cluster "Dubna" was deployed and started to take data in Lake Baikal. This array is the first cluster of the cubic kilometer scale Gigaton Volume De…
High-energy limit of collision-induced false vacuum decay
Sergei Demidov, Dmitry Levkov
We develop a consistent semiclassical description of field-theoretic collision-induced tunneling at arbitrary high collision energies. As a playground we consider a (1+1)-dimension…
Sensitivity of Baikal-GVD neutrino telescope to neutrino emission toward the center of Galactic dark matter halo
A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov +48
We analyse sensitivity of the gigaton volume telescope Baikal-GVD for detection of neutrino signal from dark matter annihilations or decays in the Galactic Center. Expected bounds…
Search for neutrino emission from relic dark matter in the Sun with the Baikal NT200 detector
A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov +49
We have analyzed a data set taken over 2.76 years live time with the Baikal neutrino telescope NT200. The goal of the analysis is to search for neutrinos from dark matter annihilat…
Search for muon signal from dark matter annihilations in the Sun with the Baksan Underground Scintillator Telescope for 24.12 years
M. M. Boliev, S. V. Demidov, S. P. Mikheyev +1
We present a new dataset analysis of the neutrino experiment at the Baksan Underground Scintillator Telescope with muon energy threshold about 1 GeV for the longest exposure time t…
Limits on spin-dependent WIMP-proton cross-sections from the neutrino experiment at the Baksan Underground Scintillator Telescope
Olga Suvorova, Musabi Boliev, Sergei Demidov +1
We present updated results of the Baksan Underground Scintillator Telescope in search for a signal from dark matter particles annihilating in the center of the Sun. Based on the pe…
Positronium oscillations to Mirror World revisited
S. V. Demidov, D. S. Gorbunov, A. A. Tokareva
We present a calculation of the branching ratio of orthopositronium decay into an invisible mode, which is done in the context of Mirror World models, where ordinary positronium ca…
Soliton-antisoliton pair production in particle collisions
S. V. Demidov, D. G. Levkov
We propose general semiclassical method for computing the probability of soliton-antisoliton pair production in particle collisions. The method is illustrated by explicit numerical…
Invisible Higgs in weak bosons associative production with heavy quarks at LHC: probing mass and width
E. E. Boos, S. V. Demidov, D. S. Gorbunov
New physics coupled to the Higgs boson may hide it in the standard decay channels to be investigated at LHC. We consider the models where new invisible dominant decay modes of the…
Annihilation of NMSSM neutralinos in the Sun and neutrino telescope limits
Sergei Demidov, Olga Suvorova
We investigate neutralino dark matter in the framework of NMSSM performing a scan over its parameter space and calculating neutralino capture and annihilation rates in the Sun. We…
Double Pair Production by Ultra High Energy Cosmic Ray Photons
S. V. Demidov, O. E. Kalashev
With use of CompHEP package we've made the detailed estimate of the influence of double e+e- pair production by photons (DPP) on the propagation of ultra high energy electromagneti…