134 citations · 420 across the 30 of their papers we have counts for
31 papers
Charge-exchange reactions with pion and kaon beams in the NA64h experiment at CERN
Sergei N. Gninenko, Sergey Kuleshov, Valery E. Lyubovitskij +1
We discuss a new approach to search for dark sector coupled to quarks in the invisible decays and oscillations of light neutral mesons produced in the charge-exchange (CEX) reactio…
Nonlocal Portal to the Dark Sector
Sergey Kovalenko, Sergey Kuleshov, Valery E. Lyubovitskij +1
We propose a nonlocal realization of the Stueckelberg portal between the Standard Model and Dark Sector, which decouple in the local limit. This implies that the mediator, $U(1)_{D…
Constraints on dark axion portal: missing energy and fermion EDMs
Sergei N. Gninenko, N. V. Krasnikov, Valery E. Lyubovitskij +4
We study a model in which a new interactions between the Standard Model (SM) photon and both the dark photon ( and an ALP () are described by the dark axion portal operato…
Electron-muon conversion in nuclei and rare decays induced by LFV dark photon
Alexey S. Zhevlakov, Sergey Kuleshov, Valery E. Lyubovitskij +1
We study lepton-flavor violation (LFV) effects occurring in the conversion in nuclei and in the rare radiative decays of the and mesons with a specia…
The anomalous magnetic moment of the muon in the Standard Model: an update
R. Aliberti, T. Aoyama, E. Balzani +232
We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, , updating the first White Paper (WP20) [1]. The pure QED and electroweak contrib…
Probing millicharged particles with NA64 and LDMX
Sergei N. Gninenko, N. V. Krasnikov, Sergey Kuleshov +7
Millicharged particles emerge as compelling candidates in numerous theoretically well-motivated extensions of the Standard Model. These hypothetical particles, characterized by an…
Angular coefficients of the Drell-Yan process across different rapidity and kinematical ranges
Valery E. Lyubovitskij, Alexey S. Zhevlakov, Iurii A. Anikin
We present comprehensive analysis of the angular structure of the Drell-Yan process at different rapidity and kinematical ranges using data of the ATLAS, LHCb, and CMS Collaboratio…
Formation of true muonium in the Drell-Yan dimuon production
Sergei N. Gninenko, Sergey Kuleshov, Valery E. Lyubovitskij +1
We suggest a new mechanism for the formation of true muonium (), the QED bound state, due to the Coulomb interaction of muons from pairs generated in th…
Transverse momentum dependence of the -even hadronic structure functions in the Drell-Yan process
Valery E. Lyubovitskij, Alexey S. Zhevlakov, Iurii A. Anikin
We present detailed analysis of the -even lepton angular distribution in the Drell-Yan process including gauge boson exchange and using perturbative QCD based on the col…
Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN
Sergei N. Gninenko, Dmitry V. Kirpichnikov, Nikolai V. Krasnikov +3
We propose the possibility of discovering a light pseudoscalar particle , axion-like particle (ALP), interacting mainly with quarks using the electron and photon scattering reac…
Perturbative -odd asymmetries in the Drell-Yan process revisited
Valery E. Lyubovitskij, Werner Vogelsang, Fabian Wunder +1
We calculate the perturbative -odd contributions to the lepton angular distribution in the Drell-Yan process. Using collinear factorization, we work at the first order in QCD pe…
Exploration of the Muon and Light Dark Matter explanations in NA64 with the CERN SPS high energy muon beam
Yu. M. Andreev, D. Banerjee, B. Banto Oberhauser +54
We report on a search for a new () vector boson performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from…
Test of vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS
Sergei N. Gninenko, Dmitry V. Kirpichnikov, Sergey Kuleshov +2
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 , ,…
Probing invisible vector meson decay mode with hadronic beam in the NA64 experiment at SPS/CERN
Alexey S. Zhevlakov, Dmitry V. Kirpichnikov, Sergei N. Gninenko +2
We test a novel idea of using a beam in the fixed-target experiments to search for New Physics in the events with missing energy. Bounds for invisible vector meson decay…
Lepton flavor violating dark photon
Alexey S. Zhevlakov, Dmitry V. Kirpichnikov, Valery E. Lyubovitskij
We study possible impact of dark photons on lepton flavor phenomenology. We derive the constraints on non-diagonal dark photon couplings with leptons by analyzing corresponding con…
Measurement of the intrinsic hadronic contamination in the NA64 high-purity beam at CERN
Yu. M. Andreev, D. Banerjee, B. Banto Oberhauser +65
In this study, we present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c momentum.…
Dark SU(2) Stueckelberg portal
Valery E. Lyubovitskij, Alexey S. Zhevlakov, Aliaksei Kachanovich +1
We study the non-abelian extension of the Stueckelberg portal, which plays a role of the mediator between the Standard Model (SM) and Dark Sector (DS). This port…
Implication of the dark axion portal for the EDM of fermions and dark matter probing with NA64, NA64, LDMX, $\mbox{M}^3$, and BaBar
Alexey S. Zhevlakov, Dmitry V. Kirpichnikov, Valery E. Lyubovitskij
The link between ordinary Standard model (SM) photon and both dark photon and axion like particle (ALP) can be introduced through the dark axion portal coupling. Given the dark axi…
Lepton Phenomenology of Stueckelberg Portal to Dark Sector
A. Kachanovich, S. Kovalenko, S. Kuleshov +2
We propose an extension of the Standard Model (SM) with a gauge invariant dark dector connected to the SM via a new portal -- the Stueckelberg portal, arising in the fr…
New ideas for handling of loop and angular integrals in D-dimensions in QCD
Valery E. Lyubovitskij, Fabian Wunder, Alexey S. Zhevlakov
We discuss new ideas for consideration of loop diagrams and angular integrals in -dimensions in QCD. In case of loop diagrams, we propose the covariant formalism of expansion of…
Conceptual design of the Spin Physics Detector
V. M. Abazov, V. Abramov, L. G. Afanasyev +291
The Spin Physics Detector, a universal facility for studying the nucleon spin structure and other spin-related phenomena with polarized proton and deuteron beams, is proposed to be…
Deuteron EDM induced by CP violating couplings of pseudoscalar mesons
Alexey S. Zhevlakov, Valery E. Lyubovitskij
We analyze contributions to the electric dipole (EDM) and Schiff (SFM) moments of deuteron induced by the CP-violating three-pseudoscalar meson couplings using phenomenological Lag…
Implication of the hidden sub-GeV bosons for the , Be-He anomaly, proton charge radius, EDM of fermions and dark axion portal
D. V. Kirpichnikov, Valery E. Lyubovitskij, Alexey S. Zhevlakov
We discuss new physics phenomenology of hidden scalar (), pseudoscalar (), vector () and axial-vector () particles coupled to nucleons and leptons, which could give con…
Updated limits on the CP violating and couplings derived from the neutron EDM
Alexey S. Zhevlakov, Thomas Gutsche, Valery E. Lyubovitskij
We complete our derivation of upper limits on the CP violating and couplings from an analysis of their two-loop contributions to the neutron electric dipole moment (nE…