Axion-Like Particles (ALPs) are a generic, calculable, and well motivated extension of the Standard Model with far reaching phenomenology. ALPs that couple only to hypercharge represent one subset of such models, coupling the ALP to both photons and the $Z$ boson. We examine the current ...
XFELs join hunt for axion-like particles5 July 2024 New territory Bounds on the axion–photon coupling from the latest study (pink) compared with those from previous results from synchrotron X-ray facilities (purple) and other lab searches. Credit: arXiv:2404.17333 A first-of-its-kind ...
Axion-like particles (ALPs) that decay into photon pairs pose a challenge for experiments that rely on the construction of a decay vertex in order to searc
A. V. Belikov, L. Goodenough, and D. Hooper, No indications of axion-like particles from Fermi, Phys. Rev. D 83 (2011) 063005, arXiv:1007.4862.A. V. Belikov, L. Goodenough, and D. Hooper, No Indications of Axion-Like Particles From Fermi, arXiv:1007.4862....
Ultralight axion-like particles are well-motivated dark matter candidates, emerging naturally from theories of physics at ultrahigh energies. We report the results of a direct search for the electromagnetic interaction of axion-like dark matter in the mass range that spans three decades from 12 peV...
Ultralight axion-like particles are well-motivated dark matter candidates introduced by theories beyond the standard model of particle physics. However, directly constraining their parameter space with laboratory experiments usually yields weaker limits
1. If M is large enough, these particles escape from the star without further interactions constituting a non-standard energy-loss channel. This energy-loss channel accelerates the consumption of nuclear fuel and thus shortens the duration of the different stages of stellar evolution with respect...
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String theory compactifications may generate a large number of light axion-like particles (ALPs) whose weak coupling to electromagnetism could be experimentally observable. In general, a large number of ALPs may exist, with a linear combination having a potentially observable coupling to electromagnetism...
Thus in this scenario, with such a tiny coupling with the SM particles DM particles never maintain thermal equilibrium with SM bath in the early Universe. Rather the DM particles get produced non-thermally from the decay or via annihilation of the SM bath particles. Thus from an initial ...