Variation of α from a dark matter force

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Show simple item record Davoudiasl, Hooman Giardino, Pier Paolo
dc.contributor.other UAM. Departamento de Física Teórica es_ES 2019-06-03T10:47:59Z 2019-06-03T10:47:59Z 2019-01-10
dc.identifier.citation Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 788 (2019): 270-273 en_US
dc.identifier.issn 0370-2693 es_ES
dc.description.abstract We consider a long range scalar force that mainly couples to dark matter and unstable Standard Model states, like the muon, with tiny strength. Probing this type of force would present a challenge to observations. We point out that the dependence of the induced background scalar field on dark matter number density can cause the mass of the unstable particles to have spatial and temporal variations. These variations, in turn, leave an imprint on the value of the fine structure constant α through threshold corrections, that could be detected in astronomical and cosmological measurements. Our mechanism can accommodate the mild preference of the Planck data for such a deviation, (αCMB−αpresent)/αpresent=(−3.6±3.7)×10−3. In this case, the requisite parameters typically imply that violations of Equivalence Principle may be within reach of future experiments en_US
dc.description.sponsorship This work is supported by the U.S. Department of Energy under Grant Contracts DE-SC0012704 en_US
dc.format.extent 4 pag. en_US
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier en_US
dc.relation.ispartof Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics en_US
dc.rights © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3. en_US
dc.subject.other Dark matter en_US
dc.subject.other Fine structure constant α en_US
dc.title Variation of α from a dark matter force en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1016/j.physletb.2018.11.041 es_ES
dc.identifier.publicationfirstpage 270 es_ES
dc.identifier.publicationlastpage 273 es_ES
dc.identifier.publicationvolume 788 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en Reconocimiento es_ES
dc.rights.accessRights openAccess en

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