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Multi-strange baryon production in pPb collisions at
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The multi-strange baryon yields in Pbsi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions have been shown to exhibit an enhancement relative to pp reactions. In this work, Ξ and Ω production rates have been measured with the ALICE experiment as a function of transverse momentum, n id="mmlsi2" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si2.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=16a421cafa0e2a0e956387184f993c7f" title="Click to view the MathML source">pTn>n class="mathContainer hidden">n class="mathCode">pnt="normal">Tn>n>n>, in psi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions at a centre-of-mass energy of n id="mmlsi1" class="mathmlsrc">nce?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si1.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=22ecafd7b47a44afcb612cc29dfc064b">nlineImage" 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-S0370269316301745-si1.gif"><noscript>n: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-S0370269316301745-si1.gif">noscript>n class="mathContainer hidden">n class="mathCode">snt="normal">NN=n>5.02n> TeVn>n>n>. The results cover the kinematic ranges n id="mmlsi4" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si4.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=4d11b492fbd8d1bc70d8e60f5649216e" title="Click to view the MathML source">0.6 GeV/c<pT<7.2 GeV/cn>n class="mathContainer hidden">n class="mathCode">n>0.6n> GeV/c<pnt="normal">T<n>7.2n> GeV/cn>n>n> and n id="mmlsi5" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si5.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=b5324ea13fd912edfc17796789fe720f" title="Click to view the MathML source">0.8 GeV/c<pT<5 GeV/cn>n class="mathContainer hidden">n class="mathCode">n>0.8n> GeV/c<pnt="normal">T<n>5n> GeV/cn>n>n>, for Ξ and Ω respectively, in the common rapidity interval n id="mmlsi6" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si6.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=1ee0a5fb2233cf0f6317de667943088c" title="Click to view the MathML source">&minus;0.5<yCMS<0n>n class="mathContainer hidden">n class="mathCode">&minus;n>0.5n><ynt="normal">CMS<n>0n>n>n>n>. Multi-strange baryons have been identified by reconstructing their weak decays into charged particles. The n id="mmlsi2" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si2.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=16a421cafa0e2a0e956387184f993c7f" title="Click to view the MathML source">pTn>n class="mathContainer hidden">n class="mathCode">pnt="normal">Tn>n>n> spectra are analysed as a function of event charged-particle multiplicity, which in psi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions ranges over one order of magnitude and lies between those observed in pp and Pbsi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions. The measured n id="mmlsi2" class="mathmlsrc">n class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316301745&_mathId=si2.gif&_user=111111111&_pii=S0370269316301745&_rdoc=1&_issn=03702693&md5=16a421cafa0e2a0e956387184f993c7f" title="Click to view the MathML source">pTn>n class="mathContainer hidden">n class="mathCode">pnt="normal">Tn>n>n> distributions are compared to the expectations from a Blast-Wave model. The parameters which describe the production of lighter hadron species also describe the hyperon spectra in high multiplicity psi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions. The yield of hyperons relative to charged pions is studied and compared with results from pp and Pbsi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions. A continuous increase in the yield ratios as a function of multiplicity is observed in psi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb data, the values of which range from those measured in minimum bias pp to the ones in Pbsi<font color=ngle bond" data-inlimg="/entities/sbnd" src="/sd/grey_pxl.gif" class="glyphImg imgLazyJSB"><noscript>si<font color=ngle bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">noscript>Pb collisions. A statistical model qualitatively describes this multiplicity dependence using a canonical suppression mechanism, in which the small volume causes a relative reduction of hadron production dependent on the strangeness content of the hyperon.

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