1 Ocak 2015 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2015.01.008", 
  "abstract": "<p>Time-dependent CP violation is measured in the B0\u2192J/\u03c8\u03c0+\u03c0\u2212 channel for each \u03c0+\u03c0\u2212 resonant final state using data collected with an integrated luminosity of 3.0 fb \u22121 in pp collisions using the LHCb detector. The final state with the largest rate, J/\u03c8\u03c10(770) , is used to measure the CP -violating angle 2\u03b2eff to be (41.7\u00b19.6\u22126.3+2.8)\u00b0 . This result can be used to limit the size of penguin amplitude contributions to CP violation measurements in, for example, Bs0\u2192J/\u03c8\u03d5 decays. Assuming approximate SU(3) flavour symmetry and neglecting higher order diagrams, the shift in the CP -violating phase \u03d5s is limited to be within the interval [ \u22121.05\u00b0,+1.18\u00b0 ] at 95% confidence level. Changes to the limit due to SU(3) symmetry breaking effects are also discussed.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "108439", 
  "issued": {
    "date-parts": [
      [
        2015, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Measurement of the CP -violating phase \u03b2 in B0\u2192J/\u03c8\u03c0+\u03c0\u2212 decays and limits on penguin effects", 
  "type": "article-journal"
}