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

Abelev, B. I.; Adam, J.; Adamová, D.; Adare, A.; Aggarwal, M. M.; Rinella, G. Aglieri; Agnello, M.; Agócs, A. G.; Agostinelli, A.; Ahammed, Z.; Masoodi, A. Ahmad; Ahmad, N.; Ahmed, I.; Ahn, S. U.; Aimo, I.; Ajaz, M.; Akindinov, A.; Aleksandrov, Dmitry; Alessandro, B.; Alexandre, D.; Alici, A.; Alkin, A.; Alme, J.; Alt, T.; Altini, V.; Altinpinar, S.; Altsybeev, I.; Andrei, C.; Andronic, A.; Anguelov, V.; Anielski, J.; Anson, C.; Antičić, T.; Antinori, F.; Antonioli, P.; Aphecetche, L.; Appelshäuser, H.; Arbor, N.; Arcelli, S.; Arend, A.; Armesto, N.; Arnaldi, R.; Aronsson, T.; Arsene, I. C.; Arslandok, M.; Asryan, A.; Augustinus, A.; Averbeck, R.; Awes, T. C.; Äystö, J.; Azmi, M. D.; Bach, M.; Badalà, A.; Baek, Yongwook; Bailhache, R.; Bala, R.; Baldisseri, A.; Pedrosa, F. Baltasar Dos Santos; Bán, J.; Baral, R. C.; Barbera, R.; Barile, F.; Barnaföldi, G. G.; Barnby, L. S.; Barret, V.; Bartke, J.; Basile, M.; Bastid, N.; Basu, S.; Bathen, B.; Batigne, G.; Batyunya, B.; Batzing, P. C.; Baumann, C.; Bearden, I. G.; Beck, H.; Behera, N. K.; Belikov, I.; Bellini, F.; Bellwied, R.; Belmont‐Moreno, E.; Bencédi, G.; Beolè, S.; Berceanu, I.; Bercuci, A.; Berdnikov, Y.; Berényi, D.; Bergognon, A. A.E.; Bertens, R. A.; Berzano, D.; Betev, L.; Bhasin, A.; Bhati, A. K.; Bhom, J.; Bianchi, N.; Bianchi, L.; Bianchin, C.; Bielčík, J.; Bielčíková, J.; Bilandzic, A.; Bjelogrlic, S.; Blanco, F.; Blau, D.; Blume, C.; Boccioli, M.; Bock, F.; Böttger, S.; Bøgdanov, A.; Bøggild, H.; Bogolyubsky, M.; Boldizsár, L.; Bombara, M.; Book, J.; Borel, H.; Borissov, A.; Bossù, F.; Botje, M.; Botta, E.; Braidot, E.; Braun‐Munzinger, P.; Bregant, M.; Breitner, T.; Broker, T. A.; Browning, T. A.; Broz, M.; Brun, R.; Bruna, E.; Bruno, G. E.; Budnikov, D.; Buesching, H.; Bufalino, S.; Bunčić, P.; Busch, O.; Buthelezi, Z.; Caffarri, D.; Cai, X.; Caines, H.; Caliva, A.; Villar, E. Calvo; Camerini, P.; Roman, V. Canoa; Romeo, G.; Carena, F.; Carena, W.; Filho, N. Carlin; Carminati, F.; Díaz, A. Casanova; Castellanos, J. Castillo; Hernandez, J. F. Castillo; Casula, Ester Anna Rita; Cătănescu, V.; Cavicchioli, C.; Sànchez, C. Ceballos; Cepila, J.; Cerello, P.; Chang, B.; Chapeland, S.; Charvet, J. L.; Chattopadhyay, S.; Cherney, M.; Cheshkov, C.; Cheynis, B.; Barroso, V. Chibante; Chinellato, D. D.; Chochula, P.; Chojnacki, M.; Choudhury, S.; Christakoglou, Panagiotis; Christensen, C. H.; Christiansen, P.; Chujo, T.; Chung, S. U.; Cicalò, C.; Cifarelli, L.; Cindolo, F.; Cleymans, J.; Colamaria, F.; Colella, D.; Collu, A.; Balbastre, G. Conesa; Valle, Z. Conesa del; Connors, M.; Contin, G.; Contreras, J. G.; Cormier, T. M.; Morales, Y. Corrales; Cortese, P.; Maldonado, I. Cortés; Cosentino, M. R.; Costa, F.; Cotallo, M. E.; Crescio, E.; Crochet, P.; Alaniz, E. Cruz; Albino, R. Cruz; Cuautle, E.; Cunqueiro, L.; Dainese, A.; Dang, R.; Danu, A.; Das, K.; Das, D.; Das, I.; Das, S.; Dash, S.; Dash, A.; De, Somnath; Barros, G.O.V. de; De, A.; Cataldo, G. de; Cuveland, J. de; Falco, A. De; Gruttola, D. De; Delagrange, H.; Deloff, A.; Marco, N. De; Dénes, E.; Pasquale, S. De; Deppman, A.; Erasmo, G. D; Rooij, R. de; Corchero, M. A. Diaz; Bari, D. Di; Dietel, T.; Giglio, C. Di; Liberto, S. Di; Mauro, A. Di; Nezza, P. Di; Divià, R.; Djuvsland, T.; Dobrin, A.; Dobrowolski, T.; Dönigus, B.; Dordic, O.; Dubey, A. K.; Dubla, A.; Ducroux, L.; Dupieux, P.; Majumdar, A. K. Dutta; Elia, D.; Elwood, B. G.; Emschermann, D.; Engel, H.; Erazmus, B.; Erdal, H. A.; Eschweiler, D.; Espagnon, B.; Estienne, M.; Esumi, S.; Evans, D.; Evdokimov, S.; Eyyubova, G.; Fabris, D.; Faivre, J.; Falchieri, D.; Fantoni, A.; Fasel, M.; Fehlker, D.; Feldkamp, L.; Felea, D.; Feliciello, A.; Fenton-Olsen, B.; Феофилов, Г.; Téllez, A. Fernández; Ferretti, A.; Festanti, A.; Figiel, J.; Figueredo, M. A. S.; Filchagin, S.; Finogeev, D.; Fionda, F. M.; Fiore, E. M.; Floratos, E.; Floris, M.; Foertsch, S.; Foka, P.; Fokin, S.; Fragiacomo, E.; Francescon, A.; Frankenfeld, U.; Fuchs, U.; Furget, C.; Girard, M. Fusco; Gaardhøje, J. J.; Gagliardi, M.; Gago, A. M.; Gallio, M.; Gangadharan, D. R.; Ganoti, P.; Garabatos, C.; García-Solis, E.; Gargiulo, C.; Garishvili, I.; Gerhard, J.; Germain, M.; Gheaţă, A.; Gheata, M.; Ghidini, B.; Ghosh, P.; Gianotti, P.; Giubellino, P.; Gładysz-Dziaduś, E.; Glässel, P.; Goerlich, L.; Gomez, R.; Ferreiro, E. G.; González-Zamora, P.; Gorbunov, S.; Goswami, A.; Gotovac, S.; Graczykowski, L. K.; Grajcarek, R.; Grelli, A.; Grigoras, A.; Grigoras, C.; Grigoriev, V.; Grigoryan, S.; Grigoryan, A.; Grinyov, B.; Grion, N.; Gronefeld, J. M.; Gros, P.; Grosse-Oetringhaus, J. F.; Grossiord, J.‐Y.; Grosso, R.; Guber, F.; Guernane, R.; Guerzoni, B.; Guilbaud, M.; Gulbrandsen, K.; Gulkanyan, H.; Gunji, T.; Gupta, A.; Gupta, R.; Haake, R.; Haaland, Torstein; Hadjidakis, C.; Haiduc, M.; Hamagaki, H.; Hamar, G.; Han, B. H.; Hanratty, L. D.; Hansen, A.; Harris, J. W.; Harton, A.; Hatzifotiadou, D.; Hayashi, S.; Hayrapetyan, A.; Heckel, S. T.; Heide, M.; Helstrup, H.; Herghelegiu, A.; Corral, G. Herrera; Herrmann, N.; Hess, B. A.; Hetland, K. F.; Hicks, B.; Hippolyte, B.; Hori, Y.; Hristov, P.; Hřivnáčová, I.; Huang, M.; Humanic, T. J.; Hwang, Dae Sung; Ichou, R.; Ilkaev, R.; Ilkiv, I.; Inaba, M.; Incani, E.; Innocenti, G. M.; Innocenti, P. G.; Ionita, C.; Ippolitov, M.; Irfan, M.; Ivan, C.; Ivanov, V.; Ivanov, A.; Ivanov, M.; Ivanytskyi, O.; Jachołkowski, A.; Jacobs, P.; Jahnke, C.; Jang, H. J.; Janik, M. A.; Jayarathna, P. H. S. Y.; Jena, S.; Jha, D. M.; Bustamante, R. T. Jimenez; Jones, P. G.; Jung, H.; Jusko, A.; Kaǐdalov, A. B.; Kalcher, S.; Kaliňák, P.; Kalliokoski, T.; Kalweit, A.; Kang, J. H.; Kaplin, V.; Kar, S.; Uysal, A. Karasu; Karavichev, O.; Karavicheva, T.; Karpechev, E.; Kazantsev, A. V.; Kebschull, U.; Keidel, R.; Ketzer, B.; Khan, P.; Khan, S. A.; Khan, K. H.; Khan, M. Mohisin; Khanzadeev, A.; Kharlov, Y.; Kileng, B.; Kim, J. S.; Kim, B.; Kim, D. W.; Kim, T.; Kim, J. H.; Kim, M.; Kim, S.; Kim, D. J.; Kirsch, S.; Kisel, I.; Kiselev, S.; Kisiel, A.; Klay, J. L.; Klein, J.; Klein-Bösing, C.; Kliemant, M.; Kluge, Alexander; Knichel, M. L.; Knospe, A. G.; Köhler, M. K.; Kollegger, T.; Kolojvari, A.; Kompaniets, M. V.; Kondratiev, V.; Kondratyeva, N.; Konevskikh, A.; Kovalenko, V.; Kowalski, M.; Kox, S.; Meethaleveedu, G. Koyithatta; Král, J.; Králik, I.; Kramer, F.; Kravčáková, A.; Krelina, M.; Kretz, M.; Krivda, M.; Křížek, F.; Krůs, M.; Kryshen, E.; Krzewicki, M.; Kučera, V.; Kucheriaev, Y.; Kugathasan, T.; Kuhn, C.; Kuijer, P. 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Pereira De Oliveira; Peresunko, Dmitry Yurevich; Lara, C.; Perrino, D.; Peryt, W.; Pesci, A.; Pestov, Y.; Petráček, V.; Petráň, M.; Petriş, M.; Petrov, P.; Petrovici, M.; Petta, C.; Piano, S.; Pikna, M.; Pillot, P.; Pinazza, O.; Pinsky, L.; Pitz, N.; Piyarathna, D. B.; Planinić, M.; Płoskoń, M.; Pluta, J.; Pocheptsov, T.; Pochybová, S.; Podesta-Lerma, P. L.M.; Poghosyan, M. G.; Polák, K.; Polichtchouk, B.; Poljak, N.; Pop, A.; Porteboeuf-Houssais, S.; Pospíšil, V.; Potukuchi, B.; K, Krishna Prasad; Preghenella, R.; Prino, F.; Pruneau, C.; Pshenichnov, I.; Puddu, G.; Punin, V.; Putschke, J.; Qvigstad, H.; Rachevski, A.; Rademakers, A.; Rak, J.; Rakotozafindrabe, A.; Ramello, L.; Raniwala, S.; Raniwala, R.; Räsänen, S. S.; Rascanu, B. T.; Rathee, D.; Rauch, W.; Rauf, A. W.; Razazi, V.; Read, K. F.; Réal, J. S.; Redlich, K.; Reed, R.; Rehman, A.; Reichelt, P.; Reicher, M.; Reidt, F.; Renfordt, R.; Reolon, A. R.; Reshetin, A.; Rettig, F.; Revol, J. P.; Reygers, K.; Riccati, L.; Ricci, R. A.; Richert, T.; Richter, Matthias; Riedler, P.; Riegler, W.; Riggi, F.; Rivetti, A.; Cahuantzi, M. Rodríguez; Manso, A. Rodriguez; Røed, K.; Rogochaya, E.; Røhr, D.; Röhrich, D.; Romita, R.; Ronchetti, F.; Rosnet, P.; Rossegger, S.; Rossi, A. M.; Roy, C.; Roy, P.; Montero, A. J. Rubio; Rui, R.; Russo, R.; Ryabinkin, E.; Rybicki, A.; Sadovsky, S.; Šafařı́k, K.; Sahoo, R.; Sahu, P. K.; Saini, J.; Sakaguchi, H.; Sakai, S.; Sakata, D.; Salgado, Carlos A.; Salzwedel, J.; Sambyal, S.; Samsonov, V.; Castro, X. Sanchez; Šándor, L.; Sandoval, A.; Sano, M.; Santagati, G.; Santoro, R.; Sarkar, D.; Scapparone, E.; Scarlassara, F.; Scharenberg, R. P.; Schiaua, C.; Schicker, R.; Schmidt, H. R.; Schmidt, C.; Schuchmann, S.; Schukraft, J.; Schuster, T.; Schütz, Y.; Schwarz, K.; Schweda, K.; Scioli, G.; Scomparin, E.; Scott, R.; Scott, P. 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doi:10.1016/j.physletb.2013.10.054

Cited by 164 publications

(187 citation statements)

References 51 publications

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“…On the other hand, the intermediate-p T region is expected to be dominated by hard scatterings and should scale with N coll in the absence of nuclear effects. From this we can conclude that the Cronin enhancement observed is due to nuclear modification effects, as observed in other measurements [10][11][12][13], as well as in the minimum-bias R pPb [2].…”

Section: B Nuclear Modification Factorssupporting

confidence: 84%

“…This is shown in the right panel of Fig. 22, which plots the double ratio of the p-Pb to pp yields at 3 GeV/c and in [10][11][12][13][14][15][16][17][18][19][20] 3 GeV/c to the value calculated with G-PYTHIA at 3 GeV/c. The Cronin peak is clearly visible for the V0M and CL1 (with respect to G-PYTHIA) selection and is very pronounced for the V0A selection.…”

Section: B Nuclear Modification Factorsmentioning

confidence: 98%

“…Several measurements [10][11][12][13] of particle production in the lowand intermediate-transverse-momentum region clearly show that p-Pb collisions cannot be explained by an incoherent superposition of pp collisions. Instead, the data are compatible with the presence of coherent [14] and collective [15] effects.…”

Section: Published By the American Physical Society Under The Terms Omentioning

confidence: 99%

See 2 more Smart Citations

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2015

Phys. Rev. C

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181

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We report measurements of the primary charged-particle pseudorapidity density and transverse momentum distributions in p-Pb collisions at √ s NN = 5.02 TeV and investigate their correlation with experimental observables sensitive to the centrality of the collision. Centrality classes are defined by using different event-activity estimators, i.e., charged-particle multiplicities measured in three different pseudorapidity regions as well as the energy measured at beam rapidity (zero degree). The procedures to determine the centrality, quantified by the number of participants (N part ) or the number of nucleon-nucleon binary collisions (N coll ) are described. We show that, in contrast to Pb-Pb collisions, in p-Pb collisions large multiplicity fluctuations together with the small range of participants available generate a dynamical bias in centrality classes based on particle multiplicity. We propose to use the zero-degree energy, which we expect not to introduce a dynamical bias, as an alternative event-centrality estimator. Based on zero-degree energy-centrality classes, the N part dependence of particle production is studied. Under the assumption that the multiplicity measured in the Pb-going rapidity region scales with the number of Pb participants, an approximate independence of the multiplicity per participating nucleon measured at mid-rapidity of the number of participating nucleons is observed. Furthermore, at high-p T the p-Pb spectra are found to be consistent with the pp spectra scaled by N coll for all centrality classes. Our results represent valuable input for the study of the event-activity dependence of hard probes in p-Pb collisions and, hence, help to establish baselines for the interpretation of the Pb-Pb data.

show abstract

Section: B Nuclear Modification Factorssupporting

confidence: 84%

Section: B Nuclear Modification Factorsmentioning

confidence: 98%

Section: Published By the American Physical Society Under The Terms Omentioning

confidence: 99%

See 1 more Smart Citation

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2015

Phys. Rev. C

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181

185

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“…1 we compare the mean p T as a function of charged multiplicity N ch in p-p reactions at √ s N N = 7 TeV, p-Pb collisions at √ s N N = 5.02 TeV and Pb-Pb collisions at √ s N N = 2.76 TeV from the PHSD to the experimental data from Ref. [57]. Note that for low multiplicities (N ch < 5) the mean p T is almost independent on energy (see also Ref.…”

Section: Extensions @ Lhcmentioning

confidence: 99%

“…Note that for low multiplicities (N ch < 5) the mean p T is almost independent on energy (see also Ref. [57]) which in PHSD can be traced back to the fact that (for the acceptance |η| ≤ 0.3, 0.15 ≤ p T ≤ 10 GeV/c) only events with one or two binary collisions N bin are selected for all systems. Actually, the correlation < p T > (N ch ) only weakly depends on √ s N N for pp reactions at these LHC energies, however, when plotting p T (N ch ) on an event-by-event basis, large fluctuations in p T or N ch are obtained within PHSD.…”

Section: Extensions @ Lhcmentioning

confidence: 99%

Impact of the initial size of spatial fluctuations on the collective flow in Pb–Pb collisions at $\sqrt{{{s}_{{\rm NN}}}}$ = 2.76 TeV

Konchakovski¹,

Cassing²,

Тонеев³

2015

J. Phys. G: Nucl. Part. Phys.

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Abstract. The Parton-Hadron-String-Dynamics (PHSD) transport model is used to study the influence of the initial size of spatial fluctuations of the interacting system on flow observables in Pb-Pb collisions at √ s N N = 2.76 TeV for different centralities. While the flow coefficients v 2 , v 3 , v 4 and v 5 are reasonably described in comparison to the data from the ALICE Collaboration for different centralities within the default setting, no essential sensitivity is found with respect to the initial size of spatial fluctuations even for very central collisions where the flow coefficients are dominated by the size of initial state fluctuations. We attribute this lack of sensitivity partly to the low interaction rate of the degrees-of-freedom in this very early phase of order ∼ 0.3 fm/c which is also in common with the weakly interacting color glass condensate (CGC) or glasma approach. Moreover, since the event shape in the transverse plane is approximately the same for different size of spatial fluctuations very similar eccentricities ǫ n are transformed to roughly the same flow coefficients v n in momentum space.PACS numbers: 24.85.+p, 12.38.Mh

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Measurement of electrons from heavy-flavour hadron decays as a function of multiplicity in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ = 5.02 TeV

Acharya¹,

Adamová²,

Adhya³

et al. 2020

J. High Energ. Phys.

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The multiplicity dependence of electron production from heavy-flavour hadron decays as a function of transverse momentum was measured in p-Pb collisions at √ s NN = 5.02 TeV using the ALICE detector at the LHC. The measurement was performed in the centre-of-mass rapidity interval −1.07 < y cms < 0.14 and transverse momentum interval 2 < p T < 16 GeV/c. The multiplicity dependence of the production of electrons from heavy-flavour hadron decays was studied by comparing the p T spectra measured for different multiplicity classes with those measured in pp collisions (Q pPb) and in peripheral p-Pb collisions (Q cp). The Q pPb results obtained are consistent with unity within uncertainties in the measured p T interval and event classes. This indicates that heavy-flavour decay electron production is consistent with binary scaling and independent of the geometry of the collision system. Additionally, the results suggest that cold nuclear matter effects are negligible within uncertainties, in the production of heavy-flavour decay electrons at midrapidity in p-Pb collisions.

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

Cited by 164 publications

References 51 publications

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Impact of the initial size of spatial fluctuations on the collective flow in Pb–Pb collisions at $\sqrt{{{s}_{{\rm NN}}}}$ = 2.76 TeV

Measurement of electrons from heavy-flavour hadron decays as a function of multiplicity in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ = 5.02 TeV

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