1 Ocak 2021 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 240548, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2021-01-01", 
  "description": "<p>The Born cross sections of the ${e}^{+}{e}^{-}\\to {\\Sigma }^{+}{\\overline{\\Sigma }}^{-}$ and ${e}^{+}{e}^{-}\\to {\\Sigma }^{-}{\\overline{\\Sigma }}^{+}$ processes are determined for center-of-mass energy from 2.3864 to 3.0200 GeV with the BESIII detector. The cross section lineshapes can be described properly by a pQCD function and the resulting ratio of effective form factors for the ${\\Sigma }^{+}$ and ${\\Sigma }^{-}$ is consistent with 3. In addition, ratios of the ${\\Sigma }^{+}$ electric and magnetic form factors, $|{G}_{E}/{G}_{M}|$, are obtained at three center-of-mass energies through an analysis of the angular distributions. These measurements, which are studied for the first time in the off-resonance region, provide precision experimental input for understanding baryonic structure. The observed new features of the ${\\Sigma }^{\u00b1}$ form factors require more theoretical discussions for the hyperons.</p>", 
  "headline": "Measurements of \u03a3 And \u03c3 time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV", 
  "identifier": 240548, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Measurements of \u03a3 And \u03c3 time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV", 
  "url": "https://aperta.ulakbim.gov.tr/record/240548"
}