D. Kirpichnikov
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View article: The bremsstrahlung-like production of the massive spin-2 dark matter mediator
The bremsstrahlung-like production of the massive spin-2 dark matter mediator Open
The link between Standard Model (SM) particles and dark matter (DM) can be introduced via spin-2 massive mediator, $$ {\text {G}}$$ , that couples to photon and charged leptons. Moreover, in a mediator mass range from sub-MeV to sub-GeV,…
View article: Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN
Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN Open
A bstract We propose the possibility of discovering a light pseudoscalar particle a , axion-like particle (ALP), interacting mainly with quarks using the electron and photon scattering reaction chain e + Z → e + γ + Z ; γ + Z → a + Z on nu…
View article: Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN
Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN Open
View article: Searching for Light Dark Matter and Dark Sectors with the NA64 experiment at the CERN SPS
Searching for Light Dark Matter and Dark Sectors with the NA64 experiment at the CERN SPS Open
Since its approval in 2016, NA64 has pioneered light dark matter (LDM) searches with electron, positron, muon, and hadron beams. The experiment has successfully met its primary objectives, as outlined in the EPPS input (2018), and even exc…
View article: Light-shinning-through-thin-wall radio frequency cavities for probing dark photon
Light-shinning-through-thin-wall radio frequency cavities for probing dark photon Open
We address the radio frequency (RF) cavity experiment for probing dark photons, which is a modification of the light-shining-through-thin-wall (LSthinW) setup with a relatively thin conducting barrier between a cylindrical emitter and a ho…
View article: Implication of the Weizsacker-Williams approximation for the dark matter mediator production
Implication of the Weizsacker-Williams approximation for the dark matter mediator production Open
The simplified connection between Standard Model (SM) particles and light dark matter (LDM) can be introduced via spin-0 and spin-1 lepton-specific mediators. Moreover, in a mediator mass range from sub-MeV to sub-GeV, fixed-target facilit…
View article: Proof of principle for a light dark matter search with low-energy positron beams at NA64
Proof of principle for a light dark matter search with low-energy positron beams at NA64 Open
Thermal light dark matter (LDM) with particle masses in the 1 MeV - 1 GeV range could successfully explain the observed dark matter abundance as a relic from the primordial Universe. In this picture, a new feeble interaction acts as a "por…
View article: Shedding light on dark sectors with high-energy muons at the NA64 experiment at the CERN SPS
Shedding light on dark sectors with high-energy muons at the NA64 experiment at the CERN SPS Open
A search for dark sectors is performed using the unique M2 beam line at the CERN Super Proton Synchrotron. New particles (X) could be produced in the bremsstrahlung-like reaction of high-energy 160 GeV positively charged muons impinging on…
View article: The bremsstrahlung-like production of the massive spin-2 dark matter\n mediator
The bremsstrahlung-like production of the massive spin-2 dark matter\n mediator Open
The link between Standard Model (SM) particles and dark matter (DM) can be\nintroduced via spin-2 massive mediator, G, that couples to photon and charged\nleptons. Moreover, in a mediator mass range from sub-MeV to sub-GeV,\nfixed-target f…
View article: Probing hidden leptonic scalar portals using the NA64 experiment at CERN
Probing hidden leptonic scalar portals using the NA64 experiment at CERN Open
In this study, we demonstrate the potential of the NA64 experiment at CERN SPS to search for New Physics processes involving $$e\rightarrow \mu $$ transitions after the collision of 100 GeV electrons with target nuclei. A new Dark Sec…
View article: Dark-Sector Search via Pion-Produced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>η</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math> Mesons Decaying Invisibly in the NA64h Detector
Dark-Sector Search via Pion-Produced and Mesons Decaying Invisibly in the NA64h Detector Open
We present the first results from a proof-of-concept search for dark sectors via invisible decays of pseudoscalar η and η′ mesons in the NA64h experiment at the CERN SPS. Our novel technique uses the charge-exchange reaction of 50 GeV π− o…
View article: Implication of the Weizsacker-Williams approximation for the dark matter mediator production
Implication of the Weizsacker-Williams approximation for the dark matter mediator production Open
The simplified connection between Standard Model (SM) particles and light dark matter (LDM) can be introduced via spin-0 and spin-1 lepton-specific mediators. Moreover, in a mediator mass range from sub-MeV to sub-GeV, fixed-target facilit…
View article: Shedding light on Dark Sectors with high-energy muons at the NA64 experiment at the CERN SPS
Shedding light on Dark Sectors with high-energy muons at the NA64 experiment at the CERN SPS Open
A search for Dark Sectors is performed using the unique M2 beam line at the CERN Super Proton Synchrotron. New particles ($X$) could be produced in the bremsstrahlung-like reaction of high energy 160 GeV muons impinging on an active target…
View article: First constraints on the Lμ − Lτ explanation of the muon g-2 anomaly from NA64-e at CERN
First constraints on the Lμ − Lτ explanation of the muon g-2 anomaly from NA64-e at CERN Open
View article: 50 GeV $π^-$ in, nothing out: a sensitive probe of invisible $η$ and $η'$ decays with NA64h
50 GeV $π^-$ in, nothing out: a sensitive probe of invisible $η$ and $η'$ decays with NA64h Open
We present the first results from a proof-of-concept search for dark sectors via invisible decays of pseudoscalar $η$ and $η'$ mesons in the NA64h experiment at the CERN SPS. Our novel technique uses the charge-exchange reaction of 50 GeV …
View article: First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam
First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam Open
We report the first search for dark sectors performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from the M2 beamline at the CERN Super Proton Synchrotron with a momentum of 160 …
View article: Probing Hidden Leptonic Scalar Portals using the NA64 Experiment at CERN
Probing Hidden Leptonic Scalar Portals using the NA64 Experiment at CERN Open
In this study, we demonstrate the potential of the NA64 experiment at CERN SPS to search for New Physics processes involving $e\rightarrowμ$ transitions after the collision of 100 GeV electrons with target nuclei. A new Dark Sector leptoni…
View article: Test of the vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS
Test of the vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS Open
We consider an experiment to search for dark sector particles in invisible (or semi-invisible) decays of neutral mesons M0=π0, η, η′, ω, f2(1270), which produced the charge-exchange reactions π−+(A,Z)→M0+(A,Z−1);M0→ of high-energy pions (o…
View article: Light-shining-through-wall cavity setups for probing ALPs
Light-shining-through-wall cavity setups for probing ALPs Open
We study potential probing of axion-like-particles (ALPs) with Light-Shining-through-Wall (LSW) experimental facilities which consist of two radio-frequency cavities. We compare the efficiencies of four cavity designs, involving the pump m…
View article: First constraints on the $L_μ-L_τ$ explanation of the muon $g-2$ anomaly from NA64-$e$ at CERN
First constraints on the $L_μ-L_τ$ explanation of the muon $g-2$ anomaly from NA64-$e$ at CERN Open
The inclusion of an additional $U(1)$ gauge $L_μ-L_τ$ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this paradigm assumes the existence of a new, light $Z^\prime$ vec…
View article: Probing scalar, Dirac, Majorana, and vector dark matter through a spin-0 electron-specific mediator at electron fixed-target experiments
Probing scalar, Dirac, Majorana, and vector dark matter through a spin-0 electron-specific mediator at electron fixed-target experiments Open
We discuss the thermal target curves of Majorana, Dirac, scalar, and vector light dark matter (DM) that are associated with the freeze-out mechanism via the annihilation into the e+e− pair through the electron-specific spin-0 mediator of d…
View article: Probing light dark matter with positron beams at NA64
Probing light dark matter with positron beams at NA64 Open
We present the results of a missing-energy search for light dark matter which has a new interaction with ordinary matter transmitted by a vector boson, called dark photon A′. For the first time, this search is performed with a positron bea…
View article: Light-shinning-through-thin-wall radio frequency cavities for probing dark photon
Light-shinning-through-thin-wall radio frequency cavities for probing dark photon Open
We address the radio frequency (RF) cavity experiment for probing dark photons, which is a modification of the light-shining-through-thin-wall (LSthinW) setup with a relatively thin conducting barrier between cylindrical emitter and hollow…
View article: Development of the fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments
Development of the fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments Open
The search for new comparably light (well below the electroweak scale) feebly interacting particles is an exciting possibility to explain some mysterious phenomena in physics, among them the origin of Dark Matter. The sensitivity study thr…
View article: Lepton flavor violating dark photon
Lepton flavor violating dark photon Open
We study the possible impact of dark photons on lepton flavor phenomenology. We derive the constraints on nondiagonal dark photon couplings with leptons by analyzing corresponding contributions to lepton anomalous magnetic moments, rare le…
View article: Exploration of the Muon $g-2$ and Light Dark Matter explanations in NA64 with the CERN SPS high energy muon beam
Exploration of the Muon $g-2$ and Light Dark Matter explanations in NA64 with the CERN SPS high energy muon beam Open
We report on a search for a new $Z'$ ($L_μ-L_τ$) vector boson performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from the M2 beamline at the CERN Super Proton Synchrotron with …
View article: Probing scalar, Dirac, Majorana and vector DM through spin-0 electron-specific mediator at the electron fixed-target experiments
Probing scalar, Dirac, Majorana and vector DM through spin-0 electron-specific mediator at the electron fixed-target experiments Open
We discuss the thermal target curves of Majorana, Dirac, scalar and vector light dark matter (DM) that are associated with the freeze-out mechanism via the annihilation into $e^+e^-$ pair through the electron-specific spin-0 mediator of da…
View article: Probing invisible vector meson decay mode with the hadronic beam in the NA64 experiment at SPS CERN
Probing invisible vector meson decay mode with the hadronic beam in the NA64 experiment at SPS CERN Open
We test a novel idea of using a ${\ensuremath{\pi}}^{\ensuremath{-}}$ beam in the fixed-target experiments to search for new physics in the events with missing energy. Bounds for invisible vector $\ensuremath{\rho}$ meson decay were derive…
View article: Test of vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS
Test of vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS Open
We consider an experiment to search for dark sector particles in dark photon kinetic mixing model by analyze invisible and semi-invisible decays of neutral mesons $M^0 = π^0$, $η$, $η'$, $ω$, $f_2(1270)$, produced in the NA64 experiment at…
View article: Search for Light Dark Matter with NA64 at CERN
Search for Light Dark Matter with NA64 at CERN Open
Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would imply the existence of a new feeble interaction between the dark and ordinary m…