The cent
rality dependence of the cha
rged-pa
rticle pseudo
rapidity density measu
red with ALICE in Pb–Pb collisions at
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r a b
road pseudo
rapidity
range is p
resented. This Lette
r extends the p
revious
results
repo
rted by ALICE to mo
re pe
riphe
ral collisions. No st
rong change of the ove
rall shape of cha
rged-pa
rticle pseudo
rapidity density dist
ributions with cent
rality is obse
rved, and when no
rmalised to the numbe
r of pa
rticipating nucleons in the collisions, the evolution ove
r pseudo
rapidity with cent
rality is likewise small. The b
road pseudo
rapidity
range (
rc">rmulatext 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<5r hidden">) allows p
recise estimates of the total numbe
r of p
roduced cha
rged pa
rticles which we find to
range f
rom
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rc">rmulatext 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.)r hidden"> in 80–90% and 0–5% cent
ral collisions,
respectively. The total cha
rged-pa
rticle multiplicity is seen to app
roximately scale with the numbe
r of pa
rticipating nucleons in the collision. This suggests that ha
rd cont
ributions to the cha
rged-pa
rticle multiplicity a
re limited. The
results a
re compa
red to models which desc
ribe
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rapidity in the most cent
ral Pb–Pb collisions and it is found that these models do not captu
re all featu
res of the dist
ributions.