Publications de Oleg Ruchayskiy

Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks

Lesya Shchutska, Aurelio Bay, Guido Haefeli, Elena Graverini, Alexey Boyarsky, Sun Hee Kim, Federico Leo Redi, Maria Elena Stramaglia, Oleg Ruchayskiy, Nikolaos Charitonidis, Sebastian Gerlach, Inar Timiryasov, Jean-Loup Tastet, Ana Bárbara Rodrigues Cavalcante, Ekaterina Kuznetsova, Hans Dijkstra, Anton Petrov, Sergei Smirnov

This paper presents a fast approach to simulating muons produced in interactions of the SPS proton beams with the target of the SHiP experiment. The SHiP experiment will be able to search for new long-lived particles produced in a 400~GeV

/c

SPS proton be ...

2019

Probing new physics with displaced vertices: Muon tracker at CMS

Lesya Shchutska, Alexey Boyarsky, Oleg Ruchayskiy, Kyrylo Bondarenko

Long-lived particles can manifest themselves at the LHC via "displaced vertices"-several charged tracks originating from a position separated from the proton interaction point by a macroscopic distance. Here we demonstrate the potential of the muon tracker ...

2019

A White Paper on keV sterile neutrino Dark Matter

Antoine Pierre Emmanuel Alexis Merle, Alexey Boyarsky, Laurent Gastaldo, Jonathan Leon Wolf, Julien Lesgourgues, Oleg Ruchayskiy, Marco Drewes, Igor Tkachev, Jan Hamann

We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/o ...

Iop Publishing Ltd2017

The active muon shield in the SHiP experiment

Lesya Shchutska, Aurelio Bay, Elena Graverini, Alexey Boyarsky, Sun Hee Kim, Federico Leo Redi, Oleg Ruchayskiy, Sebastian Gerlach, Inar Timiryasov, Ekaterina Kuznetsova, Hans Dijkstra, Sergei Smirnov

The SHiP experiment is designed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. An essential task for the experiment is to keep the Standard Model background leve ...

2017

A facility to search for hidden particles at the CERN SPS: the SHiP physics case

Lesya Shchutska, Alexey Boyarsky, Oleg Ruchayskiy, Marco Drewes, Kyrylo Bondarenko, Shintaro Eijima, Anurag Tripathi

This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (search for hidden particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below ...

Institute of Physics2016

Satellite galaxies in semi-analytic models of galaxy formation with sterile neutrino dark matter

Alexey Boyarsky, Oleg Ruchayskiy

The sterile neutrino is a viable darkmatter candidate that can be produced in the early Universe via non-equilibrium processes, and would therefore possess a highly non-thermal spectrum of primordial velocities. In this paper we analyse the process of stru ...

Wiley-Blackwell2016

Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal

Alexey Boyarsky, Andrii Neronov, Oleg Ruchayskiy

We present results of a search for the 3.5 keV emission line in our recent very long (similar to 1.4 Ms) XMM-Newton observation of the Draco dwarf spheroidal galaxy. The astrophysical X-ray emission from such dark matter-dominated galaxies is faint, thus t ...

Wiley-Blackwell2016

Decaying dark matter: the case for a deep X-ray observation of Draco

Alexey Boyarsky, Oleg Ruchayskiy

Recent studies of M31, the Galactic Centre (GC), and galaxy clusters have made tentative detections of an X-ray line at similar to 3.5 keV that could be produced by decaying dark matter. We use high-resolution simulations of the Aquarius project to predict ...

Oxford University Press2015

A facility to Search for Hidden Particles (SHiP) at the CERN SPS

Lesya Shchutska, Aurelio Bay, Elena Graverini, Alexey Boyarsky, Federico Leo Redi, Oleg Ruchayskiy, Géraldine Conti, Ekaterina Kuznetsova, Hans Dijkstra, Sergei Smirnov

A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the S ...

2015

Magnetohydrodynamics of chiral relativistic fluids

Alexey Boyarsky, Oleg Ruchayskiy

We study the dynamics of a plasma of charged relativistic fermions at very high temperature T >> m, where m is the fermion mass, coupled to the electromagnetic field. In particular, we derive a magnetohydrodynamical description of the evolution of such a p ...

Amer Physical Soc2015

Oleg Ruchayskiy

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Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks

Probing new physics with displaced vertices: Muon tracker at CMS

A White Paper on keV sterile neutrino Dark Matter

The active muon shield in the SHiP experiment

A facility to search for hidden particles at the CERN SPS: the SHiP physics case

Satellite galaxies in semi-analytic models of galaxy formation with sterile neutrino dark matter

Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal

Decaying dark matter: the case for a deep X-ray observation of Draco

A facility to Search for Hidden Particles (SHiP) at the CERN SPS

Magnetohydrodynamics of chiral relativistic fluids

Probing new physics with displaced vertices: Muon tracker at CMS

Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks

Magnetohydrodynamics of chiral relativistic fluids

Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal

A White Paper on keV sterile neutrino Dark Matter

The active muon shield in the SHiP experiment

A facility to search for hidden particles at the CERN SPS: the SHiP physics case

Decaying dark matter: the case for a deep X-ray observation of Draco

Satellite galaxies in semi-analytic models of galaxy formation with sterile neutrino dark matter

A facility to Search for Hidden Particles (SHiP) at the CERN SPS