1 Ocak 2015 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 108045, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2015-01-01", 
  "description": "<p>We extract the e+e\u2212\u2192\u03c0+\u03c0\u2212 cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93\u00a0fb\u22121 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is measured with a systematic uncertainty of 0.9%. We extract the pion form factor |F\u03c0|2 as well as the contribution of the measured cross section to the leading-order hadronic vacuum polarization contribution to (g\u22122)\u03bc . We find this value to be a\u03bc\u03c0\u03c0,LO(600\u2013900MeV)=(368.2\u00b12.5stat\u00b13.3sys)\u22e010\u221210 , which is between the corresponding values using the BaBar or KLOE data.</p>", 
  "headline": "Measurement of the e + e \u2212 \u2192 \u03c0 + \u03c0 \u2212 cross section between 600 and 900 MeV using initial state radiation", 
  "identifier": 108045, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Measurement of the e + e \u2212 \u2192 \u03c0 + \u03c0 \u2212 cross section between 600 and 900 MeV using initial state radiation", 
  "url": "https://aperta.ulakbim.gov.tr/record/108045"
}