Search for a Dark Photon in e⁺e⁻ Collisions at Babar
| dc.contributor.ORCID | 0000-0003-0867-2189 (Lou, X) | |
| dc.contributor.VIAF | 250674117 (Izen, JM) | en_US |
| dc.contributor.VIAF | 250674117 (Izen, JM) | |
| dc.contributor.author | Lees, J. P. | en_US |
| dc.contributor.author | Poireau, V. | en_US |
| dc.contributor.author | Tisserand, V. | en_US |
| dc.contributor.author | Grauges, E. | en_US |
| dc.contributor.author | Palano, A. | en_US |
| dc.contributor.author | Eigen, G. | en_US |
| dc.contributor.author | Stugu, B. | en_US |
| dc.contributor.author | Izen, Joseph M. | en_US |
| dc.contributor.author | Lou, Xinchou | en_US |
| dc.contributor.author | BaBar Collaboration | en_US |
| dc.contributor.utdAuthor | Lou, Xinchou | en_US |
| dc.contributor.utdAuthor | Izen, Joseph M. | en_US |
| dc.date.accessioned | 2015-01-12T22:28:48Z | |
| dc.date.available | 2015-01-12T22:28:48Z | |
| dc.date.created | 2014-11-10 | en_US |
| dc.date.issued | 2014-11-10 | en_US |
| dc.description | Includes supplementary material | en_US |
| dc.description.abstract | Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A′), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e⁺e⁻ → γA′, A′ → e⁺e⁻, μ⁺μ⁻ using 514 fb⁻¹ of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10⁻⁴ − 10⁻³ for dark photon masses in the range 0.02-10.2 GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon. | en_US |
| dc.identifier.bibliographicCitation | Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2014. "Search for a dark photon in e⁺e⁻ collisions at BABAR." Physical Review Letters 113(20), doi:10.1103/PhysRevLett.113.201801 | en_US |
| dc.identifier.issn | 0031-9007 | en_US |
| dc.identifier.issue | 20 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10735.1/4256 | |
| dc.identifier.volume | 113 | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Physical Society | en_US |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevLett.113.201801 | |
| dc.rights | ©2014 American Physical Society | en_US |
| dc.source | Physical Review Letters | |
| dc.subject | Dark photons | en_US |
| dc.subject | Muons | en_US |
| dc.subject | Electrons | en_US |
| dc.subject | Abelian interactions | en_US |
| dc.title | Search for a Dark Photon in e⁺e⁻ Collisions at Babar | en_US |
| dc.type | Text | en_US |
| dc.type.genre | Article | en_US |