I. Voronchikhin

Improved limits on a new $Z'$ in $B-L$ scenarios with the NA64 experiment at CERN

T K ND TPC collaboration, Yu. M. Andreev, A Antonov, M. A. Ayala Torres et autres

Extensions of the Standard Model featuring an additional $U(1)_{B-L}$ gauge symmetry provide a compelling framework linking the origin of neutrino masses to possible dark matter candidates. The associated gauge boson, $Z'$, couples directly to Standard Model fermions and can be produced in …

Improved limits on a new $Z'$ in $B-L$ scenarios with the NA64 experiment at CERN

the NA Collaboration, Yu. M. Andreev, A Antonov, M. A. Ayala Torres et autres

Extensions of the Standard Model featuring an additional $U(1)_{B-L}$ gauge symmetry provide a compelling framework linking the origin of neutrino masses to possible dark matter candidates. The associated gauge boson, $Z'$, couples directly to Standard Model fermions and can be produced in …

it, cl, ch, ca, de, es (code pays fourni par la source)

Searching for Light Dark Matter and Dark Sectors with the NA64 experiment at the CERN SPS

Yu. M. Andreev, A. Antonov, M. A. Ayala Torres, D. Banerjee et autres

Since its approval in 2016, NA64 has pioneered Light Dark Matter (LDM) searches with electron [1], positron [2], muon [3], and hadron [4] beams. The experiment has successfully met its primary objectives, as outlined in the EPPS input (2018), and even exceed …

Improved limits on a new $Z'$ in $B-L$ scenarios with the NA64 experiment at CERN

Yu.M. Andreev, A. Antonov, M.A. Ayala Torres, D. Banerjee et autres

Extensions of the Standard Model featuring an additional $U(1)_{B-L}$ gauge symmetry provide a compelling framework linking the origin of neutrino masses to possible dark matter candidates. The associated gauge boson, $Z'$, couples directly to Standard Model fermions and can be produced in …

it, cl, ch, ca, de, es (code pays fourni par la source)

Prospects of boosted magnetic dipole inelastic fermion dark matter at ILC-BDX

I. Voronchikhin, D. V. Kirpichnikov

In this work, we investigate the projected sensitivity of the Beam-Dump eXperiment at the International Linear Collider (ILC-BDX) to inelastic fermionic dark matter coupled to the Standard Model photon through an off-diagonal magnetic dipole operator. We compute the production rate of dark …

Prospects of boosted magnetic dipole inelastic fermion dark matter at ILC-BDX

I. Voronchikhin, D. V. Kirpichnikov

In this work, we investigate the projected sensitivity of the Beam-Dump eXperiment at the International Linear Collider (ILC-BDX) to inelastic fermionic dark matter coupled to the Standard Model photon through an off-diagonal magnetic dipole operator. We compute the production rate of dark …

ru (code pays fourni par la source)

Direct-detection constraints on inelastic dark matter with a scalar mediator

I. Voronchikhin, D. V. Kirpichnikov

We calculate direct detection constraints on inelastic dark matter (DM) for a scalar portal scenario with leptophilic couplings. The p-wave velocity suppression of the annihilation cross section of scalar-mediated inelastic Dirac DM implies the opening of viable regions of DM parameter space …

Direct-detection constraints on inelastic dark matter with a scalar mediator

I. Voronchikhin, D. V. Kirpichnikov

We calculate direct detection constraints on inelastic dark matter (DM) for a scalar portal scenario with leptophilic couplings. The p-wave velocity suppression of the annihilation cross section of scalar-mediated inelastic Dirac DM implies the opening of viable regions of DM parameter space …

ru (code pays fourni par la source)

Missing energy signatures of inelastic magnetic dipole DM at NA64e

Sergei N. Gninenko, N. V. Krasnikov, I. Voronchikhin, D. V. Kirpichnikov

Some extensions of the Standard Model consider inelastic dark matter (iDM) as an attractive candidate for sub-GeV DM of thermal origin that could be detected at modern accelerators. In the present paper, we calculate the production rate of iDM pairs $χ_{1} \barχ_0$ …

Missing energy signatures of inelastic magnetic dipole DM at NA64e

Sergei N. Gninenko, N. V. Krasnikov, I. Voronchikhin, D. V. Kirpichnikov

Some extensions of the Standard Model consider inelastic dark matter (iDM) as an attractive candidate for sub-GeV DM of thermal origin that could be detected at modern accelerators. In the present paper, we calculate the production rate of iDM pairs $χ_{1} \barχ_0$ …

ru (code pays fourni par la source)

Probing millicharged particles with NA64$$\mu $$ and LDMX

Sergei N. Gninenko, N. V. Krasnikov, S. V. Kuleshov, Valery E. Lyubovitskij et autres

Abstract Millicharged particles emerge as compelling candidates in numerous theoretically well-motivated extensions of the Standard Model. These hypothetical particles, characterized by an electric charge that is a small fraction of the elementary charge, have attracted significant attention in contemporary experimental physics. Their …

br, cl, de, ca, ch, es, ru (code pays fourni par la source)

Constraints on dark axion portal: missing energy and fermion EDMs

Sergei N. Gninenko, N. V. Krasnikov, Valery E. Lyubovitskij, Sergey Kuleshov et autres

We study a model in which a new interactions between the Standard Model (SM) photon and both the dark photon ($γ_D)$ and an ALP ($a$) are described by the dark axion portal operator. The implications of this dark axion portal scenario for …