Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV

J. Adam; Laurent Aphecetche; B. Audurier; A. Baldisseri; Guillaume Batigne; I. Belikov; H. Borel; J. Castillo Castellanos; J.L. Charvet; C. Cheshkov; B. Cheynis; L. Ducroux; Marie Germain; J.-Y. Grossiord; B. Hippolyte; A. Lardeux; A. Maire; J. Martin Blanco; Gines Martinez Garcia; L. Massacrier; L. Molnar; D.A. Moreira De Godoy; A. Morreale; H. Pereira Da Costa; Philippe Pillot; L. Ronflette; Y. Schutz; A. Shabetai; Diego Stocco; B. Teyssier; R. Tieulent; A. Uras; R. Vernet; M. Wang; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; J.S. Real; C. Silvestre; A. Vauthier; Z. Conesa Del Valle; I. Das; B. Espagnon; C. Hadjidakis; I. Lakomov; C. Suire; J. D. Tapia Takaki; M. Tarhini; L. Valencia Palomo

Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV

J. Adam Laurent Aphecetche ¹ B. Audurier ¹ A. Baldisseri ² Guillaume Batigne ¹ I. Belikov ³ H. Borel ² J. Castillo Castellanos ² J.L. Charvet ² C. Cheshkov ⁴ B. Cheynis ⁴ L. Ducroux ⁴ Marie Germain ¹ J.-Y. Grossiord ⁴ B. Hippolyte ³ A. Lardeux ² A. Maire ³ J. Martin Blanco ¹ Gines Martinez Garcia ¹ L. Massacrier ¹ L. Molnar ³ D.A. Moreira De Godoy ¹ A. Morreale ¹ H. Pereira Da Costa ² Philippe Pillot ¹ L. Ronflette ¹ Y. Schutz ¹ A. Shabetai ¹ Diego Stocco ¹ B. Teyssier ⁴ R. Tieulent ⁴ A. Uras ⁴ R. Vernet ⁵ M. Wang ¹ G. Conesa Balbastre ⁶ J. Faivre ⁶ C. Furget ⁶ R. Guernane ⁶ J.S. Real ⁶ C. Silvestre ⁶ A. Vauthier ⁶ Z. Conesa Del Valle ⁷ I. Das ⁷ B. Espagnon ⁷ C. Hadjidakis ⁷ I. Lakomov ⁷ C. Suire ⁷ J. D. Tapia Takaki ⁷ M. Tarhini ⁷ L. Valencia Palomo ⁷

1 SUBATECH - Laboratoire SUBATECH Nantes

2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

3 IPHC - Institut Pluridisciplinaire Hubert Curien

4 IPNL - Institut de Physique Nucléaire de Lyon

5 CC-IN2P3 - Centre de Calcul de l'IN2P3

6 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

7 IPNO - Institut de Physique Nucléaire d'Orsay

Abstract : We report on results obtained with the Event Shape Engineering technique applied to Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV. By selecting events in the same centrality interval, but with very different average flow, different initial state conditions can be studied. We find the effect of the event-shape selection on the elliptic flow coefficient $v_2$ to be almost independent of transverse momentum $p_\rm{T}$, as expected if this effect is due to fluctuations in the initial geometry of the system. Charged hadron, pion, kaon, and proton transverse momentum distributions are found to be harder in events with higher-than-average elliptic flow, indicating an interplay between radial and elliptic flow.

Document type :

Journal articles

Domain :

Physics [physics] / Nuclear Experiment [nucl-ex]

Physics [physics] / High Energy Physics - Experiment [hep-ex]

Complete list of metadatas

http://hal.in2p3.fr/in2p3-01179599
Contributor : Sylvie Flores <>
Submitted on : Thursday, July 23, 2015 - 7:21:15 AM
Last modification on : Tuesday, November 19, 2019 - 2:37:40 AM

Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV

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Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV

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