Beam-dump experiments for visibly decaying mediators hit an intrinsic sensitivity ceiling in the prompt-decay region that cannot be overcome by more data or better backgrounds, favoring compact portable setups.
The Beam and detector of the NA62 experiment at CERN
4 Pith papers cite this work. Polarity classification is still indexing.
abstract
NA62 is a fixed-target experiment at the CERN SPS dedicated to measurements of rare kaon decays. Such measurements, like the branching fraction of the $K^{+} \rightarrow \pi^{+} \nu \bar\nu$ decay, have the potential to bring significant insights into new physics processes when comparison is made with precise theoretical predictions. For this purpose, innovative techniques have been developed, in particular, in the domain of low-mass tracking devices. Detector construction spanned several years from 2009 to 2014. The collaboration started detector commissioning in 2014 and will collect data until the end of 2018. The beam line and detector components are described together with their early performance obtained from 2014 and 2015 data.
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A gauged U(1)_{Lμ-Lτ} model generates nearly degenerate Majorana dark matter whose self-interactions via a light scalar mediator set the relic density, resolve core-cusp anomalies, and fit LZ direct detection plus muon g-2 bounds.
Minimal reconfiguration of NA62 detectors at a future ECN3 beam-dump facility can deliver competitive sensitivity for MeV-GeV feebly interacting particles and allow immediate data taking.
The paper surveys theoretical motivations, experimental searches, and bounds on the dark photon as a kinetically mixed gauge boson from a dark sector, covering both massive and massless cases along with related milli-charged fermion constraints.
citing papers explorer
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Beam-Dump Ceiling and Its Experimental Implication: The Case of a Portable Experiment
Beam-dump experiments for visibly decaying mediators hit an intrinsic sensitivity ceiling in the prompt-decay region that cannot be overcome by more data or better backgrounds, favoring compact portable setups.
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Nearly Degenerate Majorana Dark Matter and Its Self-Interactions in a Gauged $U(1)_{L_\mu - L_\tau}$ Model
A gauged U(1)_{Lμ-Lτ} model generates nearly degenerate Majorana dark matter whose self-interactions via a light scalar mediator set the relic density, resolve core-cusp anomalies, and fit LZ direct detection plus muon g-2 bounds.
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NO LESS: Novel Opportunities for Light Exotic Searches at the SPS
Minimal reconfiguration of NA62 detectors at a future ECN3 beam-dump facility can deliver competitive sensitivity for MeV-GeV feebly interacting particles and allow immediate data taking.
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The Dark Photon
The paper surveys theoretical motivations, experimental searches, and bounds on the dark photon as a kinetically mixed gauge boson from a dark sector, covering both massive and massless cases along with related milli-charged fermion constraints.