Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC
B. Abelev
,
Laurent Aphecetche
(1)
,
Y.W. Baek
(2)
,
A. Baldisseri
(3)
,
V. Barret
(2)
,
N. Bastid
(2)
,
Guillaume Batigne
(1)
,
H. Borel
(3)
,
M. Bregant
(1)
,
J.L. Charvet
(3)
,
B. Cheynis
(4)
,
C. Cheshkov
(4)
,
P. Crochet
(2)
,
H. Delagrange
(1)
,
L. Ducroux
(4)
,
B. Erazmus
(1)
,
Magali Estienne
(1)
,
Marie Germain
(1)
,
J.-Y. Grossiord
(4)
,
Maxime Guilbaud
(4)
,
B. Hippolyte
(2)
,
R. Ichou
(2)
,
C. Kuhn
(2)
,
A. Lardeux
(1)
,
S. Li
(2)
,
X. Lopez
(2)
,
F. Manso
(2)
,
M. Marchisone
(2)
,
J. Martin Blanco
(1)
,
Gines Martinez Garcia
(1)
,
A. Mas
(1)
,
L. Massacrier
(1)
,
L. Molnar
(5)
,
H. Pereira da Costa
(3)
,
Philippe Pillot
(1)
,
S. Porteboeuf-Houssais
(2)
,
A. Rakotozafindrabe
(1)
,
P. Rosnet
(2)
,
C. Roy
(5)
,
X. Sanchez Castro
(5)
,
Y. Schutz
(1)
,
S. Senyukov
(5)
,
Alexandre Shabetai
(1)
,
Diego Stocco
(1)
,
R. Tieulent
(4)
,
A. Uras
(4)
,
R. Vernet
(6)
,
B. Vulpescu
(2)
,
X. Zhang
(2)
,
Y. Zoccarato
(4)
,
N. Arbor
(7)
,
G. Conesa Balbastre
(7)
,
J. Faivre
(7)
,
C. Furget
(7)
,
R. Guernane
(7)
,
S. Kox
(7)
,
J.S. Real
(7)
,
C. Silvestre
(7)
,
Z. Conesa Del Valle
(8)
,
I. Das
(8)
,
B. Espagnon
(8)
,
C. Hadjidakis
(8)
,
I. Lakomov
(8)
,
C. Suire
(8)
,
J. D. Tapia Takaki
(8)
,
L. Valencia Palomo
(8)
1
SUBATECH -
Laboratoire SUBATECH Nantes
2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
3 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
4 IPNL - Institut de Physique Nucléaire de Lyon
5 IPHC - Institut Pluridisciplinaire Hubert Curien
6 CC-IN2P3 - Centre de Calcul de l'IN2P3
7 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
8 IPNO - Institut de Physique Nucléaire d'Orsay
2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
3 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
4 IPNL - Institut de Physique Nucléaire de Lyon
5 IPHC - Institut Pluridisciplinaire Hubert Curien
6 CC-IN2P3 - Centre de Calcul de l'IN2P3
7 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
8 IPNO - Institut de Physique Nucléaire d'Orsay
B. Abelev
- Function : Author
Laurent Aphecetche
- Function : Author
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- IdRef : 113847653
Guillaume Batigne
- Function : Author
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B. Cheynis
- Function : Author
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Magali Estienne
- Function : Author
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Marie Germain
- Function : Author
- PersonId : 170960
- IdHAL : marie-germain
- ORCID : 0000-0001-7382-1609
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Maxime Guilbaud
- Function : Author
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- IdHAL : maxime-guilbaud
- ORCID : 0000-0001-5990-482X
- IdRef : 236157566
Gines Martinez Garcia
- Function : Author
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- IdHAL : gines-martinez
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- IdRef : 068952961
Philippe Pillot
- Function : Author
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- ORCID : 0000-0002-9067-0803
S. Porteboeuf-Houssais
- Function : Author
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- IdHAL : sarah-porteboeuf
- ORCID : 0000-0002-2646-6189
C. Roy
- Function : Author
- PersonId : 742351
- IdHAL : christelle-roy
- ORCID : 0000-0001-5920-6271
Alexandre Shabetai
- Function : Author
- PersonId : 181202
- IdHAL : alexandre-shabetai
- ORCID : 0000-0003-3069-726X
Diego Stocco
- Function : Author
- PersonId : 170966
- IdHAL : diego-stocco
- ORCID : 0000-0002-5377-5163
- IdRef : 204479150
G. Conesa Balbastre
- Function : Author
- PersonId : 737477
- IdHAL : conesa-balbastre-gustavo
- ORCID : 0000-0001-5283-3520
J.S. Real
- Function : Author
- PersonId : 737490
- IdHAL : jean-sebastien-real
- ORCID : 0000-0003-1584-783X
- IdRef : 156873133
Abstract
The average transverse momentum versus the charged-particle multiplicity N_ch was measured in p-Pb collisions at a collision energy per nucleon-nucleon pair sqrt(s_NN) = 5.02 TeV and in pp collisions at collision energies of sqrt(s) = 0.9, 2.76, and 7 Tev in the kinematic range 0.15 < p_T < 10.0 Gev/c and |eta| < 0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb-Pb collisions at sqrt(s_NN) = 2.76 Tev at similar charged-particle multiplicities. In pp and p-Pb collisions, a strong increase of with N_ch is observed, which is much stronger than that measured in Pb-Pb collisions. For pp collisions, this could be attributed, within a model of hadronizing strings, to multiple-parton interactions and to a final-state color reconnection mechanism. The data in p-Pb and Pb-Pb collisions cannot be described by an incoherent superposition of nucleon-nucleon collisions and pose a challenge to most of the event generators.