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Precision measurement of the ratio of the to lifetimes
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The LHCb measurement of the lifetime ratio of the rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si1.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=c655beeaa08faa060a8ca257c266baec">View the MathML sou<font color=rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si1.gif">ript>rder="0" style="vertical-align:bottom" width="18" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si1.gif">ript>r hidden">rflow="scroll">row>row>row>brow>row>0row> baryon to the rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si2.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=0b99828119809b542144111ec9de7def">View the MathML sou<font color=rce" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si2.gif">ript>rder="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-S0370269314003232-si2.gif">ript>r hidden">rflow="scroll">row>r accent="true">B&macr;r>row>row>0row> meson is updated using data corresponding to an integrated luminosity of 3.0 fb−1 collected using 7 and 8 TeV centre-of-mass energy pp   collisions at the LHC. The decay modes used are rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si3.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=515550d5adde13167d04f6c263e0c4af">View the MathML sou<font color=rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si3.gif">ript>rder="0" style="vertical-align:bottom" width="95" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si3.gif">ript>r hidden">rflow="scroll">row>row>row>brow>row>0row>retchy="false">&rarr;Jretchy="false">/prow>Krow>row>row> and rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si4.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=6dc3e442a3f9f72cc5d3e5d90e3654f8">View the MathML sou<font color=rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si4.gif">ript>rder="0" style="vertical-align:bottom" width="105" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si4.gif">ript>r hidden">rflow="scroll">row>r accent="true">B&macr;r>row>row>0row>retchy="false">&rarr;Jretchy="false">/row>row>row>+row>row>Krow>row>row>, where the rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si5.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=89c7826734d7f34be743c0c9ba60b77f" title="Click to view the MathML source">蟺+Kr hidden">rflow="scroll">row>row>row>+row>row>Krow>row>row> mass is consistent with that of the i6" class="mathmlsrc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si6.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=b7019f307afce4a1e0490ab94ea60f9e">View the MathML sou<font color=rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si6.gif">ript>rder="0" style="vertical-align:bottom" width="56" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si6.gif">ript>r hidden">i6.gif" overflow="scroll">row>r accent="true">K&macr;r>row>row>鈦?/mo>0row>retchy="false">(892retchy="false">) meson. The lifetime ratio is determined with unprecedented precision to be rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si7.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=da8b6de480debaa5ad305b97c2a38f5a" title="Click to view the MathML source">0.974±0.006±0.004r hidden">rflow="scroll">0.974±0.006±0.004, where the first uncertainty is statistical and the second systematic. This result is in agreement with original theoretical predictions based on the heavy quark expansion. Using the current world average of the rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si2.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=0b99828119809b542144111ec9de7def">View the MathML sou<font color=rce" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si2.gif">ript>rder="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-S0370269314003232-si2.gif">ript>r hidden">rflow="scroll">row>r accent="true">B&macr;r>row>row>0row> lifetime, the rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si8.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=678caf5a6a9e0f8ff22af32a6434d5a0">View the MathML sou<font color=rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si8.gif">ript>rder="0" style="vertical-align:bottom" width="18" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si8.gif">ript>r hidden">rflow="scroll">row>row>row>brow>row>0row> lifetime is found to be rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si9.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=1c51ed31fa23cfe35bda39b1676bd89b" title="Click to view the MathML source">1.479±0.009±0.010 psr hidden">rflow="scroll">1.479±0.009±0.010 ps.

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