1 Ocak 2017 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 107171, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2017-01-01", 
  "description": "<p>Using a data set of 2.93 fb \u22121 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e\u2212\u2192e+e\u2212\u03b3ISR and e+e\u2212\u2192\u03bc+\u03bc\u2212\u03b3ISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/ c 2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range.</p>", 
  "headline": "Dark photon search in the mass range between 1.5 and 3.4 GeV/ c 2", 
  "identifier": 107171, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Dark photon search in the mass range between 1.5 and 3.4 GeV/ c 2", 
  "url": "https://aperta.ulakbim.gov.tr/record/107171"
}