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 (d="mmlsi2" class="mathmlsrc">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">−0.5<y<0dden">de">0.5<y<0) in p&ndash;Pb collisions at d="mmlsi1" class="mathmlsrc">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">dth="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">dden">de">sNN=5.02 TeV using the ALICE detector at the LHC. Exploiting particle identification capabilities at high transverse momentum (d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT), the previously published d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT spectra have been extended to include measurements up to 20 GeV/c   for seven event multiplicity classes. The d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT spectra for pp collisions at d="mmlsi11" class="mathmlsrc">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">dth="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">dden">de">s=7 TeV, needed to interpolate a pp reference spectrum, have also been extended up to 20 GeV/c   to measure the nuclear modification factor (d="mmlsi6" class="mathmlsrc">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">RpPbdden">de">RpPb) in non-single diffractive p&ndash;Pb collisions.

d="sp0170">At intermediate transverse momentum (d="mmlsi108" class="mathmlsrc">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<pT<10 GeV/cdden">de">2<pT<10 GeV/c) 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 d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT dependent structure of such increase is qualitatively similar to those observed in pp and heavy-ion collisions. At high d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT (d="mmlsi8" class="mathmlsrc">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/cdden">de">>10 GeV/c), the particle ratios are consistent with those reported for pp and Pb&ndash;Pb collisions at the LHC energies.

d="sp0180">At intermediate d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT the (anti)proton d="mmlsi6" class="mathmlsrc">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">RpPbdden">de">RpPb shows a Cronin-like enhancement, while pions and kaons show little or no nuclear modification. At high d="mmlsi3" class="mathmlsrc">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">pTdden">de">i3.gif" overflow="scroll">pT the charged pion, kaon and (anti)proton d="mmlsi6" class="mathmlsrc">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">RpPbdden">de">RpPb are consistent with unity within statistical and systematic uncertainties.

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