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Alver B, Back BB, Baker MD, et al. System size, energy, pseudorapidity, and centrality dependence of elliptic flow. Phys Rev Lett. 2007;98(24):242302doi: 10.1103/PhysRevLett.98.242302.
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., Chetluru, V., Decowski, M. P., García, E., Gburek, T., George, N., Gulbrandsen, K., Halliwell, C., Hamblen, J., Harnarine, I., Hauer, M., Henderson, C., Hofman, D. J., Hollis, R. S., Hołyński, R., Holzman, B., Iordanova, A., Johnson, E., Kane, J. L., Khan, N., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Reed, C., Richardson, E., Roland, C., Roland, G., Sagerer, J., Seals, H., Sedykh, I., Smith, C. E., Stankiewicz, M. A., Steinberg, P., Stephans, G. S., Sukhanov, A., Szostak, A., Tonjes, M. B., Trzupek, A., Vale, C., van Nieuwenhuizen, G. J., Vaurynovich, S. S., Verdier, R., Veres, G. I., Walters, P., Wenger, E., Willhelm, D., Wolfs, F. L., Wosiek, B., Woźniak, K., Wyngaardt, S., & Wysłouch, B. (2007). System size, energy, pseudorapidity, and centrality dependence of elliptic flow. Physical review letters, 98(24), 242302. https://doi.org/10.1103/PhysRevLett.98.242302
Alver, B, et al. "System size, energy, pseudorapidity, and centrality dependence of elliptic flow." Physical review letters vol. 98,24 (2007): 242302. doi: https://doi.org/10.1103/PhysRevLett.98.242302
Alver B, Back BB, Baker MD, Ballintijn M, Barton DS, Betts RR, Bickley AA, Bindel R, Busza W, Carroll A, Chai Z, Chetluru V, Decowski MP, García E, Gburek T, George N, Gulbrandsen K, Halliwell C, Hamblen J, Harnarine I, 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, Richardson E, Roland C, Roland G, Sagerer J, Seals H, Sedykh I, Smith CE, Stankiewicz MA, Steinberg P, Stephans GS, Sukhanov A, Szostak A, Tonjes MB, Trzupek A, Vale C, van Nieuwenhuizen GJ, Vaurynovich SS, Verdier R, Veres GI, Walters P, Wenger E, Willhelm D, Wolfs FL, Wosiek B, Woźniak K, Wyngaardt S, Wysłouch B. System size, energy, pseudorapidity, and centrality dependence of elliptic flow. Phys Rev Lett. 2007 Jun 15;98(24):242302. doi: 10.1103/PhysRevLett.98.242302. Epub 2007 Jun 15. PMID: 17677957.
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Phys Rev Lett. 2007 Jun 15;98(24):242302. doi: 10.1103/PhysRevLett.98.242302. Epub 2007 Jun 15.

System size, energy, pseudorapidity, and centrality dependence of elliptic flow.

Physical review letters

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, V Chetluru, M P Decowski, E García, T Gburek, N George, K Gulbrandsen, C Halliwell, J Hamblen, I Harnarine, 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, E Richardson, C Roland, G Roland, J Sagerer, H Seals, I Sedykh, C E Smith, M A Stankiewicz, P Steinberg, G S F Stephans, A Sukhanov, A Szostak, M B Tonjes, A Trzupek, C Vale, G J van Nieuwenhuizen, S S Vaurynovich, R Verdier, G I Veres, P Walters, E Wenger, D Willhelm, F L H Wolfs, B Wosiek, K Woźniak, S Wyngaardt, B Wysłouch

Affiliations

  1. Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA.

PMID: 17677957 DOI: 10.1103/PhysRevLett.98.242302

Abstract

This Letter presents measurements of the elliptic flow of charged particles as a function of pseudorapidity and centrality from Cu-Cu collisions at 62.4 and 200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider. The elliptic flow in Cu-Cu collisions is found to be significant even for the most central events. For comparison with the Au-Au results, it is found that the detailed way in which the collision geometry (eccentricity) is estimated is of critical importance when scaling out system-size effects. A new form of eccentricity, called the participant eccentricity, is introduced which yields a scaled elliptic flow in the Cu-Cu system that has the same relative magnitude and qualitative features as that in the Au-Au system.

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