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Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

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dc.contributor.authorSeong, I. S.
dc.contributor.authorVahsen, S. E.
dc.contributor.authorAdachi, I.
dc.contributor.authorAihara, H.
dc.contributor.authorMizuk, R.
dc.contributor.authorPakhlov, P.
dc.contributor.authorZhukova, V.
dc.date.accessioned2024-11-20T09:18:30Z
dc.date.available2024-11-20T09:18:30Z
dc.date.issued2019
dc.description.abstract© 2019 authors. Published by the American Physical Society. 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 (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (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.
dc.identifier.citationSearch for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment / Seong, I.S. [et al.] // Physical Review Letters. - 2019. - 122. - № 1. - 10.1103/PhysRevLett.122.011801
dc.identifier.doi10.1103/PhysRevLett.122.011801
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevLett.122.011801
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85059832635&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000455065000002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16452
dc.relation.ispartofPhysical Review Letters
dc.titleSearch for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.volume122
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