Search for Invisible Decays of a Dark Photon Produced in e⁺e⁻ Collisions at Babar
dc.contributor.ORCID | 0000-0003-0867-2189 (Lou, X) | en_US |
dc.contributor.VIAF | 250674117 (Izen, JM) | en_US |
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 | Brown, D. N. | 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 | Izen, Joseph M. | en_US |
dc.contributor.utdAuthor | Lou, Xinchou | en_US |
dc.date.accessioned | 2018-08-24T21:10:02Z | |
dc.date.available | 2018-08-24T21:10:02Z | |
dc.date.created | 2017-09 | en_US |
dc.date.issued | 2017-09 | en_US |
dc.description.abstract | We search for single-photon events in 53 fb⁻¹ of e⁺e⁻ collision data collected with the BABAR detector at the PEP-II B-Factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A' through the process e⁺e⁻ → γA'; A' → invisible. Such particles, referred to as "dark photons," are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90% confidence level upper limits on the coupling strength of A' to e⁺e⁻ in the mass range m_{A'} ≤ 8 GeV. In particular, our limits exclude the values of the A' coupling suggested by the dark-photon interpretation of the muon (g - 2)_μ anomaly, as well as a broad range of parameters for the dark-sector models. | en_US |
dc.description.department | School of Natural Sciences and Mathematics | en_US |
dc.identifier.bibliographicCitation | Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2017. "Search for invisible decays of a dark photon produced in e⁺e⁻ collisions at Babar." Physical Review Letters 119(13), doi:10.1103/PhysRevLett.119.131804 | en_US |
dc.identifier.issn | 0031-9007 | en_US |
dc.identifier.issue | 13 | en_US |
dc.identifier.uri | http://hdl.handle.net/10735.1/6017 | |
dc.identifier.volume | 119 | en_US |
dc.language.iso | en | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevLett.119.131804 | |
dc.rights | ©2017 American Physical Society | en_US |
dc.source | Physical Review Letters | |
dc.subject | Particle beams | en_US |
dc.subject | Observed confidence levels (Statistics) | en_US |
dc.subject | Dark matter (Astronomy) | en_US |
dc.subject | Photons | en_US |
dc.title | Search for Invisible Decays of a Dark Photon Produced in e⁺e⁻ Collisions at Babar | en_US |
dc.type.genre | article | en_US |