1 Ocak 2021 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 240480, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2021-01-01", 
  "description": "<p>A measurement of the     ${B}_{s}^{0}\\to J/\\psi \\varphi $   decay parameters using     $80.5\\phantom{\\rule{0.166667em}{0ex}}{\\mathrm{fb}}^{-1}$   of integrated luminosity collected with the ATLAS detector from 13     $\\text{Te}\\phantom{\\rule{0.333333em}{0ex}}$   proton\u2013proton collisions at the LHC is presented. The measured parameters include the CP-violating phase     ${\\varphi }_{s}$  , the width difference     $\\Delta {\\Gamma }_{s}$   between the     ${B}_{s}^{0}$   meson mass eigenstates and the average decay width     ${\\Gamma }_{s}$  . The values measured for the physical parameters are combined with those from     $19.2\\phantom{\\rule{0.166667em}{0ex}}{\\mathrm{fb}}^{-1}$   of 7 and 8     $\\text{Te}\\phantom{\\rule{0.333333em}{0ex}}$   data, leading to the following:     $\\begin{array}{cc}{\\varphi }_{s}=&amp; -0.087\u00b10.036\\phantom{\\rule{3.33333pt}{0ex}}\\left(\\mathrm{stat}.\\right)\u00b10.021\\phantom{\\rule{3.33333pt}{0ex}}\\left(\\mathrm{syst}.\\right)\\phantom{\\rule{3.33333pt}{0ex}}\\mathrm{rad}\\\\ \\Delta {\\Gamma }_{s}=&amp; 0.0657\u00b10.0043\\phantom{\\rule{3.33333pt}{0ex}}\\left(\\mathrm{stat}.\\right)\u00b10.0037\\phantom{\\rule{3.33333pt}{0ex}}{\\left(\\mathrm{syst}.\\right)\\phantom{\\rule{3.33333pt}{0ex}}\\mathrm{ps}}^{-1}\\\\ {\\Gamma }_{s}=&amp; 0.6703\u00b10.0014\\phantom{\\rule{3.33333pt}{0ex}}\\left(\\mathrm{stat}.\\right)\u00b10.0018\\phantom{\\rule{3.33333pt}{0ex}}{\\left(\\mathrm{syst}.\\right)\\phantom{\\rule{3.33333pt}{0ex}}\\mathrm{ps}}^{-1}\\end{array}$  Results for     ${\\varphi }_{s}$   and     $\\Delta {\\Gamma }_{s}$   are also presented as 68% confidence level contours in the     ${\\varphi }_{s}$  \u2013    $\\Delta {\\Gamma }_{s}$   plane. Furthermore the transversity amplitudes and corresponding strong phases are measured.     ${\\varphi }_{s}$   and     $\\Delta {\\Gamma }_{s}$   measurements are in agreement with the Standard Model predictions.</p>", 
  "headline": "Measurement of the CP-violating phase     ${\\varphi }_{s}$   in     ${B}_{s}^{0}\\to J/\\psi \\varphi $   decays in ATLAS at 13 TeV", 
  "identifier": 240480, 
  "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 CP-violating phase     ${\\varphi }_{s}$   in     ${B}_{s}^{0}\\to J/\\psi \\varphi $   decays in ATLAS at 13 TeV", 
  "url": "https://aperta.ulakbim.gov.tr/record/240480"
}