Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p-Pb collisions at
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The production of charged pions, kaons and (anti)protons has been measured at mid-rapidity (<span id="mmlsi2" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si2.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=a6bcb7b69469d31dc0318f66fec13f58" title="Click to view the MathML source">&minus;0.5<y<0span><span class="mathContainer hidden"><span class="mathCode">si2.gif" overflow="scroll">&minus;0.5<y<0span>span>span>) in p&ndash;Pb collisions at <span id="mmlsi1" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si1.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=1c2ae747013ad8d2a2bc1ccb56bc8b85">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-S0370269316303914-si1.gif">script>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-S0370269316303914-si1.gif">script><span class="mathContainer hidden"><span class="mathCode">si1.gif" overflow="scroll">sqrt>sub>sNNsub>sqrt>=5.02 TeVspan>span>span> using the ALICE detector at the LHC. Exploiting particle identification capabilities at high transverse momentum (<span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span>), the previously published <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> spectra have been extended to include measurements up to 20 GeV/c   for seven event multiplicity classes. The <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> spectra for pp collisions at <span id="mmlsi11" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si11.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=0e57ad0bb248f456bc87959bd0554927">ss="imgLazyJSB inlineImage" height="15" width="71" 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-S0370269316303914-si11.gif">script>style="vertical-align:bottom" width="71" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269316303914-si11.gif">script><span class="mathContainer hidden"><span class="mathCode">si11.gif" overflow="scroll">sqrt>ssqrt>=7 TeVspan>span>span>, needed to interpolate a pp reference spectrum, have also been extended up to 20 GeV/c   to measure the nuclear modification factor (<span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si6.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=bb93f544fc6743d67eb3ca7cb0ea856a" title="Click to view the MathML source">R<sub>pPbsub>span><span class="mathContainer hidden"><span class="mathCode">si6.gif" overflow="scroll">sub>RpPbsub>span>span>span>) in non-single diffractive p&ndash;Pb collisions.

sp0170">At intermediate transverse momentum (<span id="mmlsi108" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si108.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=9f4f6878d76df75bc68ca19a9ddb846a" title="Click to view the MathML source">2<p<sub>Tsub><10 GeV/cspan><span class="mathContainer hidden"><span class="mathCode">si108.gif" overflow="scroll">2<sub>pTsub><10 GeVstretchy="false">/cspan>span>span>) the proton-to-pion ratio increases with multiplicity in p&ndash;Pb collisions, a similar effect is not present in the kaon-to-pion ratio. The <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> dependent structure of such increase is qualitatively similar to those observed in pp and heavy-ion collisions. At high <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> (<span id="mmlsi8" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si8.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=d0ca309d8ec4199226ff18fec4a5eeb6" title="Click to view the MathML source">>10 GeV/cspan><span class="mathContainer hidden"><span class="mathCode">si8.gif" overflow="scroll">>10 GeVstretchy="false">/cspan>span>span>), the particle ratios are consistent with those reported for pp and Pb&ndash;Pb collisions at the LHC energies.

sp0180">At intermediate <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> the (anti)proton <span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si6.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=bb93f544fc6743d67eb3ca7cb0ea856a" title="Click to view the MathML source">R<sub>pPbsub>span><span class="mathContainer hidden"><span class="mathCode">si6.gif" overflow="scroll">sub>RpPbsub>span>span>span> shows a Cronin-like enhancement, while pions and kaons show little or no nuclear modification. At high <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si3.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=13414abcb31dd6dbfab981dd0084def3" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode">si3.gif" overflow="scroll">sub>pTsub>span>span>span> the charged pion, kaon and (anti)proton <span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316303914&_mathId=si6.gif&_user=111111111&_pii=S0370269316303914&_rdoc=1&_issn=03702693&md5=bb93f544fc6743d67eb3ca7cb0ea856a" title="Click to view the MathML source">R<sub>pPbsub>span><span class="mathContainer hidden"><span class="mathCode">si6.gif" overflow="scroll">sub>RpPbsub>span>span>span> are consistent with unity within statistical and systematic uncertainties.

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