Updated bounds on milli-charged particles

By S. Davidson, S. Hannestad, G. Raffelt. 2000

346 citations recorded by the source corpus.

We update the bounds on fermions with electric charge e and mass m .F or m . m ewe nd 10 15 . <1 is excluded by laboratory experiments, astrophysics and cosmology. For larger masses, the limits are less restrictive and depend onm. For milli-charged neutrinos, the limits are stronger, especially if the dierentflavors mix as suggested by current experimental evidence.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3cf16e0b73e8a4eac5c53300a880f8ef776d49bb

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In Nuclear and High Energy Physics

Citations in the corpus

Direct detection of strongly interacting sub-GeV dark matter via electron recoils (2019, background): “ral astrophysical and cosmological observations. These constraints are based on, for example, the Cosmic Microwave Background (CMB) [52–61], Big Bang Nucleosynthesis (BBN) [62–65], or Supernova 1987A [63,66]. Colliders and beam-dump experiments have also set bounds on milli-charged dark matter [63,6”
Supernova 1987A constraints on sub-GeV dark sectors, millicharged particles, the QCD axion, and an axion-like particle (2018, background): “=eso that dark-sector particles charged under the dark photon have an electric charge Qe. We will derive below the constraints from SN1987A on millicharged particles, which update bounds presented in [31]. These bounds are equally applicable for DM particles that couple to an “ultralight”, massive d”
Dark Matter Candidates from Particle Physics and Methods of Detection (2010, background): “For example, hidden photons may mix with SM photons through kinetic mixing terms F F h μν , leading to fractionally charged particles (212) that are subject to a wide variety of probes (213; 214).”
Constraining light dark matter with low-energy e+e− colliders (2013, background): “100− 200 MeV due to the cooling constraints on SN1987A [63, 103] (see also [104]).”
Physics beyond colliders at CERN: beyond the Standard Model working group report (2019, methodology): “[230].”
Light shining through walls (2010, background): “Thus, the interactions of these MCPs with the standard bath should not allow thermalisation before BBN which leads to a bound Q 5 2 6 10(79) [51] (cf.”
Direct detection of sub-GeV dark matter with semiconductor targets (2015, background): “nts seen in the previous scenarios are absent in this one. Instead, we include various astrophysical constraints on millicharged particles, which are also applicable for DM coupled to an ultralight A0[90]. – 8 – In each of the ﬁgures in Fig.2we show the prospects for DAMIC (100 g-years, silicon targ”