The centrality de
pendence of the charged-
particle
pseudora
pidity density
measured with ALICE in Pb–Pb collisions at
pan id="mmlsi1" class="mathmlsrc">mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000678&_mathId=si1.gif&_user=111111111&_pii=S0370269316000678&_rdoc=1&_issn=03702693&md5=a81ddaf5f532649da1d78a1e95bd4b8a">mg class="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-S0370269316000678-si1.gif">pt>mg height="15" border="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-S0370269316000678-si1.gif">pt>pan class="mathContainer hidden">pan class="mathCode"><math altimg="si1.gif" overflow="scroll"><msqrt><msub><mrow><mi>smi>mrow><mrow><mi mathvariant="normal">NNmi>mrow>msub>msqrt><mo>=mo><mn>2.76mn><mtext> mtext><mtext>TeVmtext>math>pan>pan>pan> over a broad
pseudora
pidity range is
presented. This Letter extends the
previous results re
ported by ALICE to
more
peri
pheral collisions. No strong change of the overall sha
pe of charged-
particle
pseudora
pidity density distributions with centrality is observed, and when nor
malised to the nu
mber of
partici
pating nucleons in the collisions, the evolution over
pseudora
pidity with centrality is likewise s
mall. The broad
pseudora
pidity range (
pan id="mmlsi2" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000678&_mathId=si2.gif&_user=111111111&_pii=S0370269316000678&_rdoc=1&_issn=03702693&md5=d532320d1e1e7bc9addbae5aef2f97f0" title="Click to view the MathML source">−3.5<η<5pan>pan class="mathContainer hidden">pan class="mathCode"><math altimg="si2.gif" overflow="scroll"><mo>−mo><mn>3.5mn><mo><mo><mi>ηmi><mo><mo><mn>5mn>math>pan>pan>pan>) allows
precise esti
mates of the total nu
mber of
produced charged
particles which we find to range fro
m pan id="mmlsi3" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000678&_mathId=si3.gif&_user=111111111&_pii=S0370269316000678&_rdoc=1&_issn=03702693&md5=ac8e6f94f0fcf75971ab8c3febefccbe" title="Click to view the MathML source">162±22(syst.)pan>pan class="mathContainer hidden">pan class="mathCode"><math altimg="si3.gif" overflow="scroll"><mn>162mn><mo>±mo><mn>22mn><mtext>(syst.)mtext>math>pan>pan>pan> to
pan id="mmlsi4" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000678&_mathId=si4.gif&_user=111111111&_pii=S0370269316000678&_rdoc=1&_issn=03702693&md5=93a2833ededa215eac67326147c44b4c" title="Click to view the MathML source">17170±770(syst.)pan>pan class="mathContainer hidden">pan class="mathCode"><math altimg="si4.gif" overflow="scroll"><mn>17170mn><mo>±mo><mn>770mn><mtext>(syst.)mtext>math>pan>pan>pan> in 80–90% and 0–5% central collisions, res
pectively. The total charged-
particle
multi
plicity is seen to a
pproxi
mately scale with the nu
mber of
partici
pating nucleons in the collision. This suggests that hard contributions to the charged-
particle
multi
plicity are li
mited. The results are co
mpared to
models which describe
pan id="mmlsi5" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316000678&_mathId=si5.gif&_user=111111111&_pii=S0370269316000678&_rdoc=1&_issn=03702693&md5=304588943ca60dc2f44d0d6b103554a3" title="Click to view the MathML source">dNch/dηpan>pan class="mathContainer hidden">pan class="mathCode"><math altimg="si5.gif" overflow="scroll"><mi mathvariant="normal">dmi><msub><mrow><mi>Nmi>mrow><mrow><mi mathvariant="normal">chmi>mrow>msub><mo stretchy="false">/mo><mi mathvariant="normal">dmi><mi>ηmi>math>pan>pan>pan> at
mid-ra
pidity in the
most central Pb–Pb collisions and it is found that these
models do not ca
pture all features of the distributions.