Relaxing constraints on a broad dark photon

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dc.contributor.authorFelix, J.R.
dc.contributor.authorThomas, A.W.
dc.contributor.authorWang, X.G.
dc.date.issued2025
dc.description.abstractWe revisit the exclusion constraints on the parameters of a narrow dark photon set by direct experimental searches. We investigate how a dark photon with a larger decay width impacts these limits, in particular, in the case where the dark photon also decays into light dark matter. As an example, taking the upper limits on the mixing parameter, 𝜀, reported by the CMS Collaboration, we find that they could be significantly relaxed. Indeed, even a very modest coupling of the dark photon to dark matter can lead to an increase in the bound on the mixing parameter by an order of magnitude.
dc.description.statementofresponsibilityJ. R. Felix, A. W. Thomas, X. G. Wang
dc.identifier.citationPhysical Review D, 2025; 112(3):035011-1-035011-6
dc.identifier.doi10.1103/cv86-8nx3
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.orcidFelix, J.R. [0009-0007-8753-3473]
dc.identifier.orcidThomas, A.W. [0000-0003-0026-499X]
dc.identifier.orcidWang, X.G. [0000-0001-9164-0027]
dc.identifier.urihttps://hdl.handle.net/2440/147844
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/CE200100008
dc.rightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.
dc.source.urihttps://doi.org/10.1103/cv86-8nx3
dc.subjectelectroweak interaction; extensions of gauge sector; particle dark matter; signatures with new bosons; dark photon; decay width; mixing parameter
dc.titleRelaxing constraints on a broad dark photon
dc.typeJournal article
pubs.publication-statusPublished online

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