Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment
| dc.contributor.author | Bhardwaj, V. | |
| dc.date.accessioned | 2020-11-26T09:31:13Z | |
| dc.date.available | 2020-11-26T09:31:13Z | |
| dc.date.issued | 2019 | |
| dc.description | Only IISERM authors are available in the record. | |
| dc.description.abstract | We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition Υ(2S)→Υ(1S)π+π−, followed by the on-shell process Υ(1S)→γA0 with A0→χχ, or by the off-shell process Υ(1S)→γχχ. Utilizing a data sample of 157.3×106 Υ(2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2. | en_US |
| dc.identifier.citation | Physical Review Letters, 122(1). | en_US |
| dc.identifier.other | https://doi.org/10.1103/PhysRevLett.122.011801 | |
| dc.identifier.uri | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.011801 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/2274 | |
| dc.language.iso | en | en_US |
| dc.publisher | American Physical Society | en_US |
| dc.subject | Higgs boson | en_US |
| dc.subject | Energy | en_US |
| dc.subject | WIMP | en_US |
| dc.title | Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment | en_US |
| dc.type | Article | en_US |