782 citations · 1.7k across the 40 of their papers we have counts for
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Unveiling new physics with discoveries at Intensity Frontier
Oleksii Mikulenko, Kyrylo Bondarenko, Alexey Boyarsky +1
The idea of feebly interacting particles (FIPs) has emerged as an important approach to address challenges beyond the Standard Model. The next generation of Intensity Frontier expe…
New physics at the Intensity Frontier: how much can we learn and how?
Oleksii Mikulenko, Kyrylo Bondarenko, Alexey Boyarsky +1
Intensity Frontier experiments are often evaluated by the smallest coupling it can probe, irrespective of what particle can be found or the scientific significance of its detection…
Sensitivities to feebly interacting particles: public and unified calculations
Maksym Ovchynnikov, Jean-Loup Tastet, Oleksii Mikulenko +1
The increasing interest in Long-Lived Particles (LLPs) has led to numerous proposed experiments in order to search for them. However, the sensitivity estimates published by these e…
Best-case scenarios for neutrino capture experiments
Kyrylo Bondarenko, Alexey Boyarsky, Josef Pradler +1
A direct discovery of the cosmic neutrino background would bring to a closure the searches for relic left-over radiation predicted by the Hot Big Bang cosmology. Recently, the KATR…
Sensitivities to feebly interacting particles: public and unified calculations
Maksym Ovchynnikov, Jean-Loup Tastet, Oleksii Mikulenko +1
The idea that new physics could take the form of feebly interacting particles (FIPs) - particles with a mass below the electroweak scale, but which may have evaded detection due to…
Towards the optimal beam dump experiment to search for feebly interacting particles
Kyrylo Bondarenko, Alexey Boyarsky, Oleksii Mikulenko +2
Future searches for new physics beyond the Standard Model are without doubt in need of a diverse approach and experiments with complementary sensitivities to different types of cla…
Sensitivity of the FACET experiment to Heavy Neutral Leptons and Dark Scalars
Maksym Ovchynnikov, Viktor Kryshtal, Kyrylo Bondarenko
We analyze the potential of the recently proposed experiment FACET (Forward-Aperture CMS ExTension) to search for new physics. As an example, we consider the models of Higgs-like s…
Neutron stars as photon double-lenses: constraining resonant conversion into ALPs
Kyrylo Bondarenko, Alexey Boyarsky, Josef Pradler +1
Axion-photon conversion is a prime mechanism to detect axion-like particles that share a coupling to the photon. We point out that in the vicinity of neutron stars with strong magn…
Production of Chern-Simons bosons in decays of mesons
Yuliia Borysenkova, Pavlo Kashko, Mariia Tsarenkova +2
We consider the effective interaction of quarks with a new GeV-scale vector particle that couples to electroweak gauge bosons by the so-called effective Chern-Simons interaction. W…
An allowed window for heavy neutral leptons below the kaon mass
Kyrylo Bondarenko, Alexey Boyarsky, Juraj Klaric +4
The extension of the Standard Model with two gauge-singlet Majorana fermions can simultaneously explain two beyond-the-Standard-model phenomena: neutrino masses and oscillations, a…
New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies
James Alvey, Nashwan Sabti, Victoria Tiki +7
Dwarf spheroidal galaxies are excellent systems to probe the nature of fermionic dark matter due to their high observed dark matter phase-space density. In this work, we review, re…
Direct detection and complementary constraints for sub-GeV dark matter
Kyrylo Bondarenko, Alexey Boyarsky, Torsten Bringmann +3
Traditional direct searches for dark matter, looking for nuclear recoils in deep underground detectors, are challenged by an almost complete loss of sensitivity for light dark matt…
Light scalar production from Higgs bosons and FASER 2
Iryna Boiarska, Kyrylo Bondarenko, Alexey Boyarsky +3
The most general renormalizable interaction between the Higgs sector and a new gauge-singlet scalar is governed by two interaction terms: cubic and quartic. The quartic interac…
Phenomenology of GeV-scale scalar portal
Iryna Boiarska, Kyrylo Bondarenko, Alexey Boyarsky +3
We review and revise the phenomenology of the scalar portal -- a new scalar particle with the mass in GeV range that mixes with the Higgs boson. In particular, we consider producti…
Probing new physics with displaced vertices: muon tracker at CMS
Kyrylo Bondarenko, Alexey Boyarsky, Maksym Ovchynnikov +2
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…
Probing baryon asymmetry of the Universe at LHC and SHiP
Iryna Boiarska, Kyrylo Bondarenko, Alexey Boyarsky +4
The origin of the baryon asymmetry of the Universe (BAU) is one of the major puzzles beyond the Standard Model. Detecting the particles responsible for the generation of the BAU wo…
Sensitivity of the intensity frontier experiments for neutrino and scalar portals: analytic estimates
Kyrylo Bondarenko, Alexey Boyarsky, Maksym Ovchynnikov +1
In recent years, a number of intensity-frontier experiments have been proposed to search for feebly interacting particles with a mass in the GeV range. We show analytically how the…
Sensitivity of the SHiP experiment to Heavy Neutral Leptons
SHiP Collaboration
Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino…
Phenomenology of GeV-scale Heavy Neutral Leptons
Kyrylo Bondarenko, Alexey Boyarsky, Dmitry Gorbunov +1
We review and revise phenomenology of the GeV-scale heavy neutral leptons (HNLs). We extend the previous analyses by including more channels of HNLs production and decay and provid…
Connection between diphoton and triboson channels in new physics searches
Anastasia Sokolenko, Kyrylo Bondarenko, Alexey Boyarsky +1
Diphoton channel provides a clean signature in searches for new physics. In this paper, we discuss a connection between the diphoton channel () and triboson channels (, $Z…
Features in the Standard Model diphoton background
Kyrylo Bondarenko, Alexey Boyarsky, Oleg Ruchayskiy +1
We argue that electromagnetic decays of energetic unflavoured neutral mesons, notably , mis-identified as single photons due to granularity of the electromagnetic calorimeter mi…
A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
Sergey Alekhin, Wolfgang Altmannshofer, Takehiko Asaka +82
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 larg…