New method for measuring azimuthal distributions in nucleus-nucleus collisions

Borghini N, Dinh PM, Ollitrault JY (2001)
Physical Review C 63(5).

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
The methods currently used to measure azimuthal distributions of particles in heavy-ion collisions assume that all azimuthal correlations between particles result from their correlation with the reaction plane. However, other correlations exist. and it is safe to neglect them only if azimuthal anisotropies are much larger than 1/rootN, with N the total number of particles emitted in the collision. This condition is not satisfied at ultrarelativistic energies. We propose a new method, based on a cumulant expansion of multiparticle azimuthal correlations. which allows measurements of much smaller values of azimuthal anisotropies. down to 1/N. It is simple to implement and can be used to measure both integrated and differential flow. Furthermore. this method automatically eliminates the major systematic errors, which are due to azimuthal asymmetries in the detector acceptance.
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Zeitschriftentitel
Physical Review C
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63
Zeitschriftennummer
5
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Borghini N, Dinh PM, Ollitrault JY. New method for measuring azimuthal distributions in nucleus-nucleus collisions. Physical Review C. 2001;63(5).
Borghini, N., Dinh, P. M., & Ollitrault, J. Y. (2001). New method for measuring azimuthal distributions in nucleus-nucleus collisions. Physical Review C, 63(5). doi:10.1103/PhysRevC.63.054906
Borghini, N., Dinh, P. M., and Ollitrault, J. Y. (2001). New method for measuring azimuthal distributions in nucleus-nucleus collisions. Physical Review C 63.
Borghini, N., Dinh, P.M., & Ollitrault, J.Y., 2001. New method for measuring azimuthal distributions in nucleus-nucleus collisions. Physical Review C, 63(5).
N. Borghini, P.M. Dinh, and J.Y. Ollitrault, “New method for measuring azimuthal distributions in nucleus-nucleus collisions”, Physical Review C, vol. 63, 2001.
Borghini, N., Dinh, P.M., Ollitrault, J.Y.: New method for measuring azimuthal distributions in nucleus-nucleus collisions. Physical Review C. 63, (2001).
Borghini, Nicolas, Dinh, PM, and Ollitrault, JY. “New method for measuring azimuthal distributions in nucleus-nucleus collisions”. Physical Review C 63.5 (2001).

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arXiv: nucl-th/0007063

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