Measurement of the lifetime
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Using a data set corresponding to an integrated luminosity of id="mmlsi2" class="mathmlsrc">ixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si2.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=d3ed4e2b5b9f6fb7dd8b454ad4020fac" title="Click to view the MathML source">3 fb&minus;1iner hidden">img="si2.gif" overflow="scroll">3 fb&minus;1, collected by the LHCb experiment in pp   collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the id="mmlsi1" class="mathmlsrc">itle="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si1.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=eb9fe7373a0fa2f9e69955ed5d96d05a"><img class="imgLazyJSB inlineImage" height="17" width="74" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316305779-si1.gif">ipt><img height="17" border="0" style="vertical-align:bottom" width="74" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316305779-si1.gif">ipt>iner hidden">img="si1.gif" overflow="scroll">i>Bi>i>si>0i>Ji>/i>ψi>i>ηi> decay mode, id="mmlsi33" class="mathmlsrc">ixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si33.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=c67dfc02f6b4d1cad40d5fa82c18f0a7" title="Click to view the MathML source">τeffiner hidden">img="si33.gif" overflow="scroll">i>τi>i mathvariant="normal">effi>, is measured to beiv class="formula" id="fm0010">iv class="mathml">id="mmlsi5" class="mathmlsrc">ixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si5.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=755f07b8ecdea72ac1e161f0d70fbb4a" title="Click to view the MathML source">τeff=1.479±0.034 (stat)±0.011 (syst) ps.iner hidden">img="si5.gif" overflow="scroll">i>τi>i mathvariant="normal">effi>=1.479±0.034 (stat)±0.011 (syst) ps.<img class="temp" src="/sd/blank.gif">iv>iv> Assuming CP   conservation, id="mmlsi33" class="mathmlsrc">ixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si33.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=c67dfc02f6b4d1cad40d5fa82c18f0a7" title="Click to view the MathML source">τeffiner hidden">img="si33.gif" overflow="scroll">i>τi>i mathvariant="normal">effi> corresponds to the lifetime of the light id="mmlsi105" class="mathmlsrc">itle="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316305779&_mathId=si105.gif&_user=111111111&_pii=S0370269316305779&_rdoc=1&_issn=03702693&md5=2e683e6a7f29bd499403821400614d11"><img class="imgLazyJSB inlineImage" height="17" width="17" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316305779-si105.gif">ipt><img height="17" border="0" style="vertical-align:bottom" width="17" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316305779-si105.gif">ipt>iner hidden">img="si105.gif" overflow="scroll">i>Bi>i>si>0 mass eigenstate. This is the first measurement of the effective lifetime in this decay mode.
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