New bounds on millicharged particles from cosmology

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dc.creatorMelchiorri, Alessandro
dc.creatorPolosa, Antonello
dc.creatorStrumia, Alessandro
dc.date2007-03-14
dc.date2007-05-23
dc.date.accessioned2026-07-07T11:22:48Z
dc.date.available2026-07-07T11:22:48Z
dc.descriptionParticles with millicharge q and sub-eV mass can be produced in photon-photon collisions, distorting the energy spectrum of the Cosmic Microwave Background. We derive the conservative bound q < 10^-7 e (as well as model-dependent bounds two orders of magnitude stronger), incompatible with proposed interpretations of the PVLAS anomaly based on millicharged production or on millicharged-mediated axion-like couplings.
dc.description7 pages, 2 figures. Final version
dc.identifierhttps://arxiv.org/abs/hep-ph/0703144
dc.identifierhttp://arxiv.org/abs/hep-ph/0703144
dc.identifierPhys.Lett.B650:416-420,2007
dc.identifierdoi:10.1016/j.physletb.2007.05.042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194698
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNew bounds on millicharged particles from cosmology
dc.typetext

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