1 Ocak 2015 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2015.11.043", 
  "abstract": "<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>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "108045", 
  "issued": {
    "date-parts": [
      [
        2015, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Measurement of the e + e \u2212 \u2192 \u03c0 + \u03c0 \u2212 cross section between 600 and 900 MeV using initial state radiation", 
  "type": "article-journal"
}