and production in Pb-Pb collisions at
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The production of the hypertriton nuclei <span id="mmlsi1" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si1.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=d9a97364514b70d3ac5ff066d88862ed">ss="imgLazyJSB inlineImage" height="18" width="21" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si1.gif">script>er="0" style="vertical-align:bottom" width="21" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si1.gif">script><span class="mathContainer hidden"><span class="mathCode">si1.gif" overflow="scroll">scripts>Hscripts>scripts>Λ3scripts>span>span>span> and <span id="mmlsi2" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si2.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=630707bfce3f74f3fe4dd1303a2b80c1">ss="imgLazyJSB inlineImage" height="20" width="21" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si2.gif">script>er="0" style="vertical-align:bottom" width="21" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si2.gif">script><span class="mathContainer hidden"><span class="mathCode">si2.gif" overflow="scroll">scripts>er accent="true">H‾er>scripts>scripts>er accent="true">Λstretchy="false">¯er>3scripts>span>span>span> has been measured for the first time in Pb&ndash;Pb collisions at <span id="mmlsi115" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si115.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=98792dde095d1ff824360d8f4b21694d">ss="imgLazyJSB inlineImage" height="15" width="105" alt="View the MathML source" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si115.gif">script>er="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-S0370269316000575-si115.gif">script><span class="mathContainer hidden"><span class="mathCode">si115.gif" overflow="scroll">sqrt>sub>sNNsub>sqrt>=2.76 TeVspan>span>span> with the ALICE experiment at LHC. The <span id="mmlsi4" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si4.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=f8bc50051a5ce47a84f177607d3d28ca" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si4.gif" overflow="scroll">sub>pTsub>span>span>span>-integrated <span id="mmlsi1" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si1.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=d9a97364514b70d3ac5ff066d88862ed">ss="imgLazyJSB inlineImage" height="18" width="21" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si1.gif">script>er="0" style="vertical-align:bottom" width="21" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si1.gif">script><span class="mathContainer hidden"><span class="mathCode">si1.gif" overflow="scroll">scripts>Hscripts>scripts>Λ3scripts>span>span>span> yield in one unity of rapidity, <span id="mmlsi5" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si5.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=065282f474a03bba13ec2f740d802298">ss="imgLazyJSB inlineImage" height="22" width="414" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si5.gif">script>er="0" style="vertical-align:bottom" width="414" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si5.gif">script><span class="mathContainer hidden"><span class="mathCode">si5.gif" overflow="scroll">dNstretchy="false">/dy&times;sub>B.R.stretchy="true">(scripts>Hscripts>scripts>Λ3scripts>stretchy="false">→scripts>Hescripts>scripts>3scripts>,sup>π&minus;sup>stretchy="true">)sub>=stretchy="true">(3.86&plusmn;0.77stretchy="false">(stat.stretchy="false">)&plusmn;0.68stretchy="false">(syst.stretchy="false">)stretchy="true">)&times;sup>10&minus;5sup>span>span>span> in the 0&ndash;10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter <span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si6.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=ffd5248ddd0bde7fe0908d1e417a399d" title="Click to view the MathML source">B<sub>3sub>span><span class="mathContainer hidden"><span class="mathCode">si6.gif" overflow="scroll">sub>B3sub>span>span>span> shows a dependence on the transverse momentum, similar to the <span id="mmlsi7" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si7.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=44ae3afd5195752b732a7875a136bcba" title="Click to view the MathML source">B<sub>2sub>span><span class="mathContainer hidden"><span class="mathCode">si7.gif" overflow="scroll">sub>B2sub>span>span>span> of deuterons and the <span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si6.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=ffd5248ddd0bde7fe0908d1e417a399d" title="Click to view the MathML source">B<sub>3sub>span><span class="mathContainer hidden"><span class="mathCode">si6.gif" overflow="scroll">sub>B3sub>span>span>span> of <sup>3sup>He nuclei. The ratio of yields <span id="mmlsi113" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si113.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=7399ffecdfb0d9f9b29b3e0e8f37f63d">ss="imgLazyJSB inlineImage" height="18" width="134" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si113.gif">script>er="0" style="vertical-align:bottom" width="134" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si113.gif">script><span class="mathContainer hidden"><span class="mathCode">si113.gif" overflow="scroll">sub>S3sub>=scripts>Hscripts>scripts>Λ3scripts>stretchy="false">/stretchy="false">(scripts>Hescripts>scripts>3scripts>&times;Λstretchy="false">/pstretchy="false">)span>span>span> was measured to be <span id="mmlsi9" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si9.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=d7332616ed2692bd9a6c492564fb1508" title="Click to view the MathML source">S<sub>3sub>=0.60&plusmn;0.13(stat.)&plusmn;0.21(syst.)span><span class="mathContainer hidden"><span class="mathCode">si9.gif" overflow="scroll">sub>S3sub>=0.60&plusmn;0.13stretchy="false">(stat.stretchy="false">)&plusmn;0.21stretchy="false">(syst.stretchy="false">)span>span>span> in 0&ndash;10% centrality events; this value is compared to different theoretical models. The measured <span id="mmlsi10" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si10.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=5485cc1b27883725fd196bc48ef9dc40" title="Click to view the MathML source">S<sub>3sub>span><span class="mathContainer hidden"><span class="mathCode">si10.gif" overflow="scroll">sub>S3sub>span>span>span> is compatible with thermal model predictions. The measured <span id="mmlsi1" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si1.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=d9a97364514b70d3ac5ff066d88862ed">ss="imgLazyJSB inlineImage" height="18" width="21" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si1.gif">script>er="0" style="vertical-align:bottom" width="21" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si1.gif">script><span class="mathContainer hidden"><span class="mathCode">si1.gif" overflow="scroll">scripts>Hscripts>scripts>Λ3scripts>span>span>span> lifetime, <span id="mmlsi11" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000575&_mathId=si11.gif&_user=111111111&_pii=S0370269316000575&_rdoc=1&_issn=03702693&md5=163006bae5587e43d8fd7f47883f88e2">ss="imgLazyJSB inlineImage" height="19" width="192" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269316000575-si11.gif">script>er="0" style="vertical-align:bottom" width="192" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316000575-si11.gif">script><span class="mathContainer hidden"><span class="mathCode">si11.gif" overflow="scroll">τ=subsup>181&minus;39+54subsup>stretchy="false">(stat.stretchy="false">)&plusmn;33stretchy="false">(syst.stretchy="false">)space width="0.25em">space>psspan>span>span> is in agreement within 1σ with the world average value.

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