Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC

B. Abelev; J. Adam; D. Adamova; A. Adare; M.M. Aggarwal; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Hans Hjersing Dalsgaard; Jens Jørgen Gaardhøje; Kristjan Herlache Gulbrandsen; Alexander Colliander Hansen; Ante Bilandzic; Børge Svane Nielsen; Casper Nygaard; Carsten Søgaard

doi:10.1016/j.physletb.2013.10.054

Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC

B. Abelev, J. Adam, D. Adamova, A. Adare, M.M. Aggarwal, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Hans Hjersing Dalsgaard, Jens Jørgen Gaardhøje, Kristjan Herlache Gulbrandsen, Alexander Colliander Hansen, Ante Bilandzic, Børge Svane Nielsen, Casper Nygaard, Carsten Søgaard

Experimental Particle Physics

122 Citations (Scopus)

Abstract

The average transverse momentum 〈p_T〉 versus the charged-particle multiplicity N_ch was measured in p-Pb collisions at a collision energy per nucleon-nucleon pair sNN=5.02TeV and in pp collisions at collision energies of s=0.9,2.76, and 7TeV in the kinematic range 0.15<p_T<10.0GeV/c and |η|<0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb-Pb collisions at sNN=2.76TeV at similar charged-particle multiplicities. In pp and p-Pb collisions, a strong increase of 〈p_T〉 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.

Original language	English
Journal	Physics Letters B
Volume	727
Issue number	4-5
Pages (from-to)	371-380
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2013.10.054
Publication status	Published - 18 Dec 2013

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Abelev, B., Adam, J., Adamova, D., Adare, A., Aggarwal, M. M., Bearden, I., Bøggild, H., Christensen, C. H., Dalsgaard, H. H., Gaardhøje, J. J., Gulbrandsen, K. H., Hansen, A. C., Bilandzic, A., Nielsen, B. S., Nygaard, C., & Søgaard, C. (2013). Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC. Physics Letters B, 727(4-5), 371-380. https://doi.org/10.1016/j.physletb.2013.10.054

Abelev, B, Adam, J, Adamova, D, Adare, A, Aggarwal, MM, Bearden, I , Bøggild, H , Christensen, CH, Dalsgaard, HH, Gaardhøje, JJ , Gulbrandsen, KH, Hansen, AC, Bilandzic, A, Nielsen, BS, Nygaard, C & Søgaard, C 2013, 'Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC', Physics Letters B, vol. 727, no. 4-5, pp. 371-380. https://doi.org/10.1016/j.physletb.2013.10.054

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title = "Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC",

abstract = "The average transverse momentum 〈pT〉 versus the charged-particle multiplicity Nch was measured in p-Pb collisions at a collision energy per nucleon-nucleon pair sNN=5.02TeV and in pp collisions at collision energies of s=0.9,2.76, and 7TeV in the kinematic range 0.15T<10.0GeV/c and |η|<0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb-Pb collisions at sNN=2.76TeV at similar charged-particle multiplicities. In pp and p-Pb collisions, a strong increase of 〈pT〉 with Nch 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.",

author = "B. Abelev and J. Adam and D. Adamova and A. Adare and M.M. Aggarwal and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Dalsgaard, {Hans Hjersing} and Gaardh{\o}je, {Jens J{\o}rgen} and Gulbrandsen, {Kristjan Herlache} and Hansen, {Alexander Colliander} and Ante Bilandzic and Nielsen, {B{\o}rge Svane} and Casper Nygaard and Carsten S{\o}gaard",

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doi = "10.1016/j.physletb.2013.10.054",

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TY - JOUR

T1 - Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC

AU - Abelev, B.

AU - Adam, J.

AU - Adamova, D.

AU - Adare, A.

AU - Aggarwal, M.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Dalsgaard, Hans Hjersing

AU - Gaardhøje, Jens Jørgen

AU - Gulbrandsen, Kristjan Herlache

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Nielsen, Børge Svane

AU - Nygaard, Casper

AU - Søgaard, Carsten

PY - 2013/12/18

Y1 - 2013/12/18

N2 - The average transverse momentum 〈pT〉 versus the charged-particle multiplicity Nch was measured in p-Pb collisions at a collision energy per nucleon-nucleon pair sNN=5.02TeV and in pp collisions at collision energies of s=0.9,2.76, and 7TeV in the kinematic range 0.15T<10.0GeV/c and |η|<0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb-Pb collisions at sNN=2.76TeV at similar charged-particle multiplicities. In pp and p-Pb collisions, a strong increase of 〈pT〉 with Nch 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.

AB - The average transverse momentum 〈pT〉 versus the charged-particle multiplicity Nch was measured in p-Pb collisions at a collision energy per nucleon-nucleon pair sNN=5.02TeV and in pp collisions at collision energies of s=0.9,2.76, and 7TeV in the kinematic range 0.15T<10.0GeV/c and |η|<0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb-Pb collisions at sNN=2.76TeV at similar charged-particle multiplicities. In pp and p-Pb collisions, a strong increase of 〈pT〉 with Nch 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.

U2 - 10.1016/j.physletb.2013.10.054

DO - 10.1016/j.physletb.2013.10.054

M3 - Journal article

SN - 0370-2693

VL - 727

SP - 371

EP - 380

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

IS - 4-5

ER -

Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC

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