{"title":"Cosmological and astrophysical bounds on a 33.9 MeV sterile neutrino","authors":"D. Semikoz","doi":"10.1080/01422410108228802","DOIUrl":null,"url":null,"abstract":"Abstract In this talk we discuss astrophysical and cosmological bounds on heavy sterile neutrino with mass mvs = 33.9MeV, which was suggested some time ago as a possible interpretation of KARMEN anomaly. Combine experimental data constrain lifetime of this particle in the window ∼ 10−1sec < TS < 150 sec. We show that SN 1987A completely excludes this range of vs lifetime. Nucleosynthesis bound permit a narrow window for the TS around 0.1 sec. If vs possesses an anomalous interaction with nucleons, the SN bounds may not apply, while the nucleosynthesis ones would remain valid.","PeriodicalId":264948,"journal":{"name":"Surveys in High Energy Physics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surveys in High Energy Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/01422410108228802","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract In this talk we discuss astrophysical and cosmological bounds on heavy sterile neutrino with mass mvs = 33.9MeV, which was suggested some time ago as a possible interpretation of KARMEN anomaly. Combine experimental data constrain lifetime of this particle in the window ∼ 10−1sec < TS < 150 sec. We show that SN 1987A completely excludes this range of vs lifetime. Nucleosynthesis bound permit a narrow window for the TS around 0.1 sec. If vs possesses an anomalous interaction with nucleons, the SN bounds may not apply, while the nucleosynthesis ones would remain valid.