scholarly journals Proton fixed-target scintillation experiment to search for millicharged dark matter

2019 ◽  
Vol 100 (1) ◽  
Author(s):  
Kevin J. Kelly ◽  
Yu-Dai Tsai
Keyword(s):  
Dark Matter ◽  
Fixed Target

scholarly journals Testing GeV-scale dark matter with fixed-target missing momentum experiments

2015 ◽  
Vol 91 (9) ◽  
Author(s):  
Eder Izaguirre ◽  
Gordan Krnjaic ◽  
Philip Schuster ◽  
Natalia Toro
Keyword(s):  
Dark Matter ◽  
Fixed Target ◽  
Missing Momentum

scholarly journals Non-minimal dark matter search in dark matter colliders

2018 ◽  
Vol 168 ◽  
pp. 06008
Author(s):  
Seodong Shin
Keyword(s):  
Dark Matter ◽  
Dark Sector ◽  
Fixed Target ◽  
Dark Matter Search ◽  
Fixed Target Experiments ◽  
Neutrino Scattering ◽  
Secondary Procedure ◽  
Neutrino Detectors ◽  
Detection Strategy ◽  
The Universe

In the scenarios of dark matter (DM) with a non-minimal dark sector, we revisit a new detection strategy of observing two or three simultaneous signals from inelastic scattering of a boosted DM [1]. The relativistically incoming DM can scatter off inelastically to a heavier unstable dark sector particle which decays back in to the DM associated with visible Standard Model particles inside large volume neutrino detectors. The existence of the secondary procedure renders us to separate it from conventional neutrino scattering background. The relativistically incoming DM can come from the universe by the annihilation of heavy DM component in an inelastic boosted DM scenario or produced by the beam bombardments in fixed target experiments.

scholarly journals Fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments

2021 ◽  
pp. 108129
Author(s):  
M. Bondi ◽  
A. Celentano ◽  
R.R. Dusaev ◽  
D.V. Kirpichnikov ◽  
M.M. Kirsanov ◽  
...  
Keyword(s):  
Dark Matter ◽  
Fixed Target ◽  
Fixed Target Experiments

The physics program of the PADME experiment

2021 ◽  
Author(s):  
Federica Oliva
Keyword(s):  
Dark Matter ◽  
Positron Annihilation ◽  
Positron Beam ◽  
Test Facility ◽  
Beam Test ◽  
Fixed Target ◽  
Dark Photon ◽  
Physics Program ◽  
Target Experiment ◽  
Fixed Target Experiment

Abstract PADME (Positron Annihilation into Dark Matter Experiment) is a fixed target experiment located at the Beam Test Facility (BTF) at the Laboratori Nazionali di Frascati (LNF) designed to search for a massive dark photon A' in the process e+e- into γA', using a positron beam of energy up to 550 MeV.

scholarly journals Feebly-interacting particles: FIPs 2020 workshop report

2021 ◽  
Vol 81 (11) ◽  
Author(s):  
P. Agrawal ◽  
M. Bauer ◽  
J. Beacham ◽  
A. Berlin ◽  
A. Boyarsky ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
New Physics ◽  
Experimental Results ◽  
Interacting Particles ◽  
Fixed Target ◽  
Fixed Target Experiments ◽  
Workshop Report ◽  
Beam Dump ◽  
Neutrino Experiments

AbstractWith the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop “Physics Beyond Colliders meets theory”, held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.

scholarly journals Recent results of the NA64 experiment at the CERN SPS

2019 ◽  
Vol 212 ◽  
pp. 06005
Author(s):  
Mikhail Kirsanov
Keyword(s):  
Dark Matter ◽  
Vector Boson ◽  
Mass Range ◽  
Missing Energy ◽  
Fixed Target ◽  
Active Target ◽  
Cosmological Observations ◽  
Visible Sector ◽  
Target Experiment ◽  
Invisible Decay

We report on the results of the search for a new sub-GeV vector boson (A’) mediated production of Dark Matter (χ) in the fixed-target experiment, NA64, at the CERN SPS. The A’, called dark photon, could be generated in the reaction e-Z → e-ZA’ of 100 GeV electrons dumped against an active target which is followed by the prompt invisible decay A’ $ \to \chi \bar{\chi } $. The experimental signature of this process would be an event with an isolated electron and large missing energy in the detector. From the analysis of the data sample collected in 2016 corresponding to 4.3 × 1010 electrons on target no evidence of such a process has been found. The constraints on the A’ mixing strength with photons, 10−5 ≤ ɛ ≤ 10−2, for the A’ mass range mA’ ≤ 1GeV are derived. Significantly more data were taken in 2017 and 2018. The analysis of these data is not yet finished, although the sensitivity is already estimated as about 3 times better than in the previously published result on the 2016 data. For models considering scalar and fermionic thermal Dark Matter interacting with the visible sector through the vector portal the experiment starts to be sensitive to the regions of the dark-matter parameter $ y = \in^{2} \alpha_{D} (\frac{{m_{\chi } }}{{m_{{A^{\prime}}} }})^{4} $ predicted from the cosmological observations of Dark Matter. We also report the improved results on a direct search for a new 16.7 MeV boson (X) which could explain the anomalous excess of e+e- pairs observed in the excited 8Be* nucleus decays. Due to its coupling to electrons, the X could be produced in the bremsstrahlung reaction e-Z → e-ZX by a beam of electrons incident on an active target in the NA64 experiment at the CERN SPS and observed through the subsequent decay into a e+e- pair. With 8.4 × 1010 electrons on target no evidence for such decays was found, allowing to set limits on the X - e- coupling in the range 1 × 10−4 ≤ ɛe ≤ 6 × 10−4 excluding part of the allowed parameter space. We also set new bounds on the mixing strength of photons with dark photons (A’) from non-observation of the decay A’ → e+e- of the bremsstrahlung A’ with a mass ≤ 23MeV. Future plans of the NA64 experiment are presented.

scholarly journals Sub-GeV dark matter production at fixed-target experiments

2020 ◽  
Vol 102 (9) ◽  
Author(s):  
Asher Berlin ◽  
Patrick deNiverville ◽  
Adam Ritz ◽  
Philip Schuster ◽  
Natalia Toro
Keyword(s):  
Dark Matter ◽  
Fixed Target ◽  
Fixed Target Experiments ◽  
Matter Production

scholarly journals Testing light dark matter coannihilation with fixed-target experiments

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
Eder Izaguirre ◽  
Yonatan Kahn ◽  
Gordan Krnjaic ◽  
Matthew Moschella
Keyword(s):  
Dark Matter ◽  
Fixed Target ◽  
Fixed Target Experiments
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