Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at $$\sqrt{s}$$ = 5.02, 7 and 13 TeV

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<jats:title>Abstract</jats:title><jats:p>The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}~=~5.02$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mspace /> <mml:mo>=</mml:mo> <mml:mspace /> <mml:mn>5.02</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments measured in the midrapidity range (<jats:inline-formula><jats:alternatives><jats:tex-math>$$|\eta | < 1.5$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>η</mml:mi> <mml:mo>|</mml:mo> <mml:mo><</mml:mo> <mml:mn>1.5</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>). Results are presented for inelastic events having at least one charged particle produced in the pseudorapidity interval <jats:inline-formula><jats:alternatives><jats:tex-math>$$|\eta |<1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>η</mml:mi> <mml:mo>|</mml:mo> <mml:mo><</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>. The multiplicity dependence of the pseudorapidity density of charged particles is measured with mid- and forward rapidity multiplicity estimators, the latter being less affected by autocorrelations. A detailed comparison with predictions from the PYTHIA 8 and EPOS LHC event generators is also presented. The results can be used to constrain models for particle production as a function of multiplicity in pp collisions.</jats:p>

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