First study of the CP-violating phase and decay-width difference in decays
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A time-dependent angular analysis of View the MathML sourcexl.gif" data-inlimgeid="1-s2.0-S0370269316305226-si1.gif"> decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of View the MathML sourcex; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316305226-si16.gif"> collected during Run 1 of the LHC. The CP  -violating phase and decay-width difference of the View the MathML sourcexl.gif" data-inlimgeid="1-s2.0-S0370269316305226-si179.gif"> system are measured to be View the MathML sourcexl.gif" data-inlimgeid="1-s2.0-S0370269316305226-si4.gif"> and View the MathML sourcexl.gif" data-inlimgeid="1-s2.0-S0370269316305226-si5.gif">, respectively, where the first uncertainty is statistical and the second systematic. This is the first time that xt stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305226&_mathId=si10.gif&_user=111111111&_pii=S0370269316305226&_rdoc=1&_issn=03702693&md5=c7691096a9966575cde8c9c6202c699c" title="Click to view the MathML source">ϕs and xt stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305226&_mathId=si133.gif&_user=111111111&_pii=S0370269316305226&_rdoc=1&_issn=03702693&md5=1e4fcbd023b652949f0f051cf703b261" title="Click to view the MathML source">ΔΓs have been measured in a decay containing the xt stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305226&_mathId=si56.gif&_user=111111111&_pii=S0370269316305226&_rdoc=1&_issn=03702693&md5=4665416de8f1092f2090a62ab2b48a9e" title="Click to view the MathML source">ψ(2S) resonance.
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