Search for Invisible Decays of a Dark Photon Produced in e⁺e⁻ Collisions at BaBar
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⁺...
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Other Authors: | |
Format: | Article |
Language: | English |
Published: |
American Physical Society,
2018-10-25T14:38:14Z.
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Subjects: | |
Online Access: | Get fulltext |
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100 | 1 | 0 | |a Lees, J. P. |e author |
100 | 1 | 0 | |a Massachusetts Institute of Technology. Laboratory for Nuclear Science |e contributor |
100 | 1 | 0 | |a Cowan, Ray F |e contributor |
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700 | 1 | 0 | |a Tasneem, N. |e author |
700 | 1 | 0 | |a Gershon, T. J. |e author |
700 | 1 | 0 | |a Harrison, P. F. |e author |
700 | 1 | 0 | |a Latham, T. E. |e author |
700 | 1 | 0 | |a Prepost, R. |e author |
700 | 1 | 0 | |a Wu, S. L. |e author |
700 | 1 | 0 | |a BaBar Collaboration |e author |
700 | 1 | 0 | |a Cowan, Ray F |e author |
245 | 0 | 0 | |a Search for Invisible Decays of a Dark Photon Produced in e⁺e⁻ Collisions at BaBar |
260 | |b American Physical Society, |c 2018-10-25T14:38:14Z. | ||
856 | |z Get fulltext |u http://hdl.handle.net/1721.1/118762 | ||
520 | |a 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[subscript 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)[subscript μ] anomaly, as well as a broad range of parameters for the dark-sector models. | ||
546 | |a en | ||
655 | 7 | |a Article | |
773 | |t Physical Review Letters |