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Energy dependence of underlying-event observables measured with ALICE at the LHC

Description

 The multiplicity distributions in  pp collisions at $\sqrt{s}$ = 2.76, 5.02, 7 and 13 TeV measured in the transverse, trans-max and trans-min regions with the ALICE detector are reported. KNO-like scaling properties of the multiplicity distributions are explored. Measurements are compared with general-purpose Monte Carlo generators. 

Comparisons to models for charged particles multiplicity distributions in the transverse region in pp collisions at sqrt(s) = 2.76 TeV
Energy
2.76 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_Nch_pp2tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_Nch_pp2tev_TS_pythia_epos.pdf
Comparisons to models for charged particles multiplicity distributions in the transverse region in pp collisions at sqrt(s) = 5.02 TeV
Energy
5.02 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_Nch_pp5tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_Nch_pp5tev_TS_pythia_epos.pdf
Comparisons to models for charged particles multiplicity distributions in the transverse region in pp collisions at sqrt(s) = 13 TeV
Energy
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_Nch_pp13tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_Nch_pp13tev_TS_pythia_epos.pdf
Comparisons to models for KNO variables in the transverse region in pp collisions at sqrt(s) = 2.76 TeV
Energy
2.76 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_pp2tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_KNO_pp2tev_TS_pythia_epos.pdf
Comparisons to models for KNO variables in the transverse region in pp collisions at sqrt(s) = 5.02 TeV
Energy
5.02 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_pp5tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_KNO_pp5tev_TS_pythia_epos.pdf
Comparisons to models for KNO variables in the transverse region in pp collisions at sqrt(s) = 13 TeV
Energy
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_pp13tev_TS_pythia_epos.eps
Figure image (.pdf)
Fig_KNO_pp13tev_TS_pythia_epos.pdf
Comparisons to models for KNO variables in the trans-max region in pp collisions at sqrt(s) = 13 TeV
Energy
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_pp13tev_TSmax_pythia_epos.eps
Figure image (.pdf)
Fig_KNO_pp13tev_TSmax_pythia_epos.pdf
Comparisons to models for KNO variables in the trans-min region in pp collisions at sqrt(s) = 13 TeV
Energy
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_pp13tev_TSmin_pythia_epos.eps
Figure image (.pdf)
Fig_KNO_pp13tev_TSmin_pythia_epos.pdf
Centre-of-mass energy dependence of the average charged-particle densities in the transverse region
Energy
2.76 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS_TS.eps
Figure image (.pdf)
Fig_nchSqrtS_TS.pdf
Centre-of-mass energy dependence of the average charged-particle densities in the transverse, trans-max and trans-min regions
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS.eps
Figure image (.pdf)
Fig_nchSqrtS.pdf
Comparison to parameterization for centre-of-mass energy dependence of the average charged-particle densities in the transverse, trans-max and trans-min regions
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS_para.eps
Figure image (.pdf)
Fig_nchSqrtS_para.pdf
Comparisons to models for centre-of-mass energy dependence of the average charged-particle densities in the transverse region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS_TS_pythia_epos.eps
Figure image (.pdf)
Fig_nchSqrtS_TS_pythia_epos.pdf
Comparisons to models for centre-of-mass energy dependence of the average charged-particle densities in the trans-max region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS_TSmax_pythia_epos.eps
Figure image (.pdf)
Fig_nchSqrtS_TSmax_pythia_epos.pdf
Comparisons to models for centre-of-mass energy dependence of the average charged-particle densities in the trans-min region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_nchSqrtS_TSmin_pythia_epos.eps
Figure image (.pdf)
Fig_nchSqrtS_TSmin_pythia_epos.pdf
Pythia simulation for average number of MPI as a function of the charged-particle multiplicity distribution in the transverse region in pp collisions at sqrt(s) = 5.02 TeV
Energy
5.02 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_NmpiVsNchT_0.eps
Figure image (.pdf)
Fig_NmpiVsNchT_0.pdf
Pythia simulation for average pT as a function of the charged-particle multiplicity distribution in the transverse region in pp collisions at sqrt(s) = 5.02 TeV
Energy
5.02 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_pTlVsNchT.eps
Figure image (.pdf)
Fig_pTlVsNchT.pdf
Pythia simulation for KNO variables in the transverse region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_TS_pythia_0.eps
Figure image (.pdf)
Fig_KNO_TS_pythia_0.pdf
Pythia simulation for KNO variables in the trans-max region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_TSmax_pythia.eps
Figure image (.pdf)
Fig_KNO_TSmax_pythia.pdf
Pythia simulation for KNO variables in the trans-min region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_TSmin_pythia_0.eps
Figure image (.pdf)
Fig_KNO_TSmin_pythia_0.pdf
KNO variables in the transverse region in pp collisions at sqrt(s) = 2.76, 5.02, 7 and 13 TeV
Energy
2.76 TeV
5.02 TeV
7 TeV
13 TeV
System
p-p
Scope: PWG
PWG-MM (Monte Carlo generators and Minimum Bias)
Figure image (.eps)
Fig_KNO_TS_0.eps
Figure image (.pdf)
Fig_KNO_TS_0.pdf