Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV

B. Alver; B. B. Back; M. D. Baker; M. Ballintijn; D. S. Barton; R. R. Betts; A. A. Bickley; R. Bindel; W. Busza; A. Carroll; Z. Chai; M. P. Decowski; E. García; T. Gburek; N. George; K. Gulbrandsen; C. Halliwell; J. Hamblen; M. Hauer; C. Henderson; D. J. Hofman; R. S. Hollis; R. Hołyński; B. Holzman; A. Iordanova; E. Johnson; J. L. Kane; N. Khan; P. Kulinich; C. M. Kuo; W. Li; W. T. Lin; C. Loizides; S. Manly; A. C. Mignerey; R. Nouicer; A. Olszewski; R. Pak; C. Reed; C. Roland; G. Roland; J. Sagerer; H. Seals; I. Sedykh; C. E. Smith; M. A. Stankiewicz; P. Steinberg; G. S.F. Stephans; A. Sukhanov; M. B. Tonjes; A. Trzupek; C. Vale; G. J. Van Nieuwenhuizen; S. S. Vaurynovich; R. Verdier; G. I. Veres; P. Walters; E. Wenger; F. L.H. Wolfs; B. Wosiek; K. Woźniak; B. Wysłouch

doi:10.1103/PhysRevLett.104.142301

Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV

B. Alver, B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, R. R. Betts, A. A. Bickley, R. Bindel, W. Busza, A. Carroll, Z. Chai, M. P. Decowski, E. García, T. Gburek, N. George, K. Gulbrandsen, C. Halliwell, J. Hamblen, M. Hauer, C. HendersonD. J. Hofman, R. S. Hollis, R. Hołyński, B. Holzman, A. Iordanova, E. Johnson, J. L. Kane, N. Khan, P. Kulinich, C. M. Kuo, W. Li, W. T. Lin, C. Loizides, S. Manly, A. C. Mignerey, R. Nouicer, A. Olszewski, R. Pak, C. Reed, C. Roland, G. Roland, J. Sagerer, H. Seals, I. Sedykh, C. E. Smith, M. A. Stankiewicz, P. Steinberg, G. S.F. Stephans, A. Sukhanov, M. B. Tonjes, A. Trzupek, C. Vale, G. J. Van Nieuwenhuizen, S. S. Vaurynovich, R. Verdier, G. I. Veres, P. Walters, E. Wenger, F. L.H. Wolfs, B. Wosiek, K. Woźniak, B. Wysłouch

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Abstract

This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at √sNN=200GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.

Original language	English
Article number	142301
Journal	Physical Review Letters
Volume	104
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.104.142301
State	Published - 8 Apr 2010

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Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bickley, A. A., Bindel, R., Busza, W., Carroll, A., Chai, Z., Decowski, M. P., García, E., Gburek, T., George, N., Gulbrandsen, K., Halliwell, C., Hamblen, J., Hauer, M., ... Wysłouch, B. (2010). Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV. Physical Review Letters, 104(14), Article 142301. https://doi.org/10.1103/PhysRevLett.104.142301

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title = "Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV",

abstract = "This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at √sNN=200GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.",

author = "B. Alver and Back, {B. B.} and Baker, {M. D.} and M. Ballintijn and Barton, {D. S.} and Betts, {R. R.} and Bickley, {A. A.} and R. Bindel and W. Busza and A. Carroll and Z. Chai and Decowski, {M. P.} and E. Garc{\'i}a and T. Gburek and N. George and K. Gulbrandsen and C. Halliwell and J. Hamblen and M. Hauer and C. Henderson and Hofman, {D. J.} and Hollis, {R. S.} and R. Ho{\l}y{\'n}ski and B. Holzman and A. Iordanova and E. Johnson and Kane, {J. L.} and N. Khan and P. Kulinich and Kuo, {C. M.} and W. Li and Lin, {W. T.} and C. Loizides and S. Manly and Mignerey, {A. C.} and R. Nouicer and A. Olszewski and R. Pak and C. Reed and C. Roland and G. Roland and J. Sagerer and H. Seals and I. Sedykh and Smith, {C. E.} and Stankiewicz, {M. A.} and P. Steinberg and Stephans, {G. S.F.} and A. Sukhanov and Tonjes, {M. B.} and A. Trzupek and C. Vale and {Van Nieuwenhuizen}, {G. J.} and Vaurynovich, {S. S.} and R. Verdier and Veres, {G. I.} and P. Walters and E. Wenger and Wolfs, {F. L.H.} and B. Wosiek and K. Wo{\'z}niak and B. Wys{\l}ouch",

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Alver, B, Back, BB, Baker, MD, Ballintijn, M, Barton, DS, Betts, RR, Bickley, AA, Bindel, R, Busza, W, Carroll, A, Chai, Z, Decowski, MP, García, E, Gburek, T, George, N, Gulbrandsen, K, Halliwell, C, Hamblen, J, Hauer, M, Henderson, C, Hofman, DJ, Hollis, RS, Hołyński, R, Holzman, B, Iordanova, A, Johnson, E, Kane, JL, Khan, N, Kulinich, P, Kuo, CM, Li, W, Lin, WT, Loizides, C, Manly, S, Mignerey, AC, Nouicer, R, Olszewski, A, Pak, R, Reed, C, Roland, C, Roland, G, Sagerer, J, Seals, H, Sedykh, I, Smith, CE, Stankiewicz, MA, Steinberg, P, Stephans, GSF, Sukhanov, A, Tonjes, MB, Trzupek, A, Vale, C, Van Nieuwenhuizen, GJ, Vaurynovich, SS, Verdier, R, Veres, GI, Walters, P, Wenger, E, Wolfs, FLH, Wosiek, B, Woźniak, K & Wysłouch, B 2010, 'Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV', Physical Review Letters, vol. 104, no. 14, 142301. https://doi.org/10.1103/PhysRevLett.104.142301

TY - JOUR

T1 - Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV

AU - Alver, B.

AU - Back, B. B.

AU - Baker, M. D.

AU - Ballintijn, M.

AU - Barton, D. S.

AU - Betts, R. R.

AU - Bickley, A. A.

AU - Bindel, R.

AU - Busza, W.

AU - Carroll, A.

AU - Chai, Z.

AU - Decowski, M. P.

AU - García, E.

AU - Gburek, T.

AU - George, N.

AU - Gulbrandsen, K.

AU - Halliwell, C.

AU - Hamblen, J.

AU - Hauer, M.

AU - Henderson, C.

AU - Hofman, D. J.

AU - Hollis, R. S.

AU - Hołyński, R.

AU - Holzman, B.

AU - Iordanova, A.

AU - Johnson, E.

AU - Kane, J. L.

AU - Khan, N.

AU - Kulinich, P.

AU - Kuo, C. M.

AU - Li, W.

AU - Lin, W. T.

AU - Loizides, C.

AU - Manly, S.

AU - Mignerey, A. C.

AU - Nouicer, R.

AU - Olszewski, A.

AU - Pak, R.

AU - Reed, C.

AU - Roland, C.

AU - Roland, G.

AU - Sagerer, J.

AU - Seals, H.

AU - Sedykh, I.

AU - Smith, C. E.

AU - Stankiewicz, M. A.

AU - Steinberg, P.

AU - Stephans, G. S.F.

AU - Sukhanov, A.

AU - Tonjes, M. B.

AU - Trzupek, A.

AU - Vale, C.

AU - Van Nieuwenhuizen, G. J.

AU - Vaurynovich, S. S.

AU - Verdier, R.

AU - Veres, G. I.

AU - Walters, P.

AU - Wenger, E.

AU - Wolfs, F. L.H.

AU - Wosiek, B.

AU - Woźniak, K.

AU - Wysłouch, B.

PY - 2010/4/8

Y1 - 2010/4/8

N2 - This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at √sNN=200GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.

AB - This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at √sNN=200GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.

UR - http://www.scopus.com/inward/record.url?scp=77950665344&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.104.142301

DO - 10.1103/PhysRevLett.104.142301

M3 - 期刊論文

AN - SCOPUS:77950665344

SN - 0031-9007

VL - 104

JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

M1 - 142301

ER -

Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at √sNN=200GeV

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