Development of the fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments

Banto Oberhauser, B.; Bisio, P.; Celentano, A.; Depero, E.; Dusaev, R.R.; Kirpichnikov, D.V.; Kirsanov, M.M.; Krasnikov, N.V.; Marini, A.; Marsicano, L.; Molina-Bueno, L.; Mongillo, M.; Shchukin, D.; Sieber, H.; Voronchikhin, I.V.

doi:10.1016/j.cpc.2024.109199

Computer Physics Communications

2024

DOI: 10.1016/j.cpc.2024.109199

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Development of the fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments

B. Banto Oberhauser,

P. Bisio,

A. Celentano

et al.

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Cited by 6 publications

References 29 publications

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First constraints on the Lμ − Lτ explanation of the muon g-2 anomaly from NA64-e at CERN

Andreev,

Antonov,

Banerjee

et al. 2024

J. High Energ. Phys.

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The inclusion of an additional U(1) gauge Lμ − Lτ 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′ vector boson, with dominant coupling to μ and τ leptons and interacting with electrons via a loop mechanism. The Lμ − Lτ model can also explain the Dark Matter relic abundance, by assuming that the Z′ boson acts as a “portal” to a new Dark Sector of particles in Nature, not charged under known interactions. In this work we present the results of the Z′ search performed by the NA64-e experiment at CERN SPS, that collected ~ 9 × 1011 100 GeV electrons impinging on an active thick target. Despite the suppressed Z′ production yield with an electron beam, NA64-e provides the first accelerator-based results excluding the g − 2 preferred band of the Z′ parameter space in the 1 keV <$$ {m}_{Z^{\prime }} $$ m Z ′ ≲ 2 MeV range, in complementarity with the limits recently obtained by the NA64-μ experiment with a muon beam.

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First constraints on the Lμ − Lτ explanation of the muon g-2 anomaly from NA64-e at CERN

Andreev,

Antonov,

Banerjee

et al. 2024

J. High Energ. Phys.

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Shedding light on dark sectors with high-energy muons at the NA64 experiment at the CERN SPS

Andreev,

Banerjee,

Oberhauser

et al. 2024

Phys. Rev. D

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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 an active target, μN→μNX, followed by their decays, X→invisible. The experimental signature would be a scattered single muon from the target, with about less than half of its initial energy and no activity in the subdetectors located downstream from the interaction point. The full sample of the 2022 run is analyzed through the missing-energy/momentum channel, with total statistics of (1.98±0.02)×1010 muons on target. We demonstrate that various muonphilic scenarios involving different types of mediators, such as scalar or vector particles, can be probed simultaneously with such a technique. For the vector case, besides a Lμ−Lτ Z′ vector boson, we also consider an invisibly decaying dark photon (A′→invisible). This search is complementary to NA64 running with electrons and positrons, thus opening the possibility to expand the exploration of the thermal light dark matter parameter space by combining the results obtained with the three beams. Published by the American Physical Society 2024

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First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam

Andreev,

Banerjee,

Banto Oberhauser

et al. 2024

Phys. Rev. Lett.

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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 GeV/c are directed to an active target. The signal signature consists of a single scattered muon with momentum <80 GeV/c in the final state, accompanied by missing energy, i.e., no detectable activity in the downstream calorimeters. For a total dataset of (1.98±0.02)×1010 muons on target, no event is observed in the expected signal region. This allows us to set new limits on the remaining (mZ′,gZ′) parameter space of a new Z′ (Lμ−Lτ) vector boson which could explain the muon (g−2)μ anomaly. Additionally, our study excludes part of the parameter space suggested by the thermal dark matter relic abundance. Our results pave the way to explore dark sectors and light dark matter with muon beams in a unique and complementary way to other experiments. Published by the American Physical Society 2024

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Development of the fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments

Cited by 6 publications

References 29 publications

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

Shedding light on dark sectors with high-energy muons at the NA64 experiment at the CERN SPS

First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam

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