Elliptic flow describes the azimuthalmomentum spaceanisotropy of particle emission from non-central heavy-ion collisions in the plane transverse to the beam direction, and is defined as the second harmonic coefficient of the azimuthal Fourier decomposition of the momentum distribution.[4] Elliptic flow is a fundamental observable since it directly reflects the initial spatial anisotropy, of the nuclear overlap region in the transverse plane, directly translated into the observed momentum distribution of identified particles. Since the spatial anisotropy is largest at the beginning of the evolution, elliptic flow is especially sensitive to the early stages of system evolution.[5] A measurement of elliptic flow thus provides access to the fundamental thermalization time scale and many more things in the early stages of a relativistic heavy-ion collision.[4]
^Ollitrault, J. Y. (1992). "Anisotropy as a signature of transverse collective flow". Physical Review D. 46 (1): 229–245. Bibcode:1992PhRvD..46..229O. doi:10.1103/PhysRevD.46.229. PMID 10014754.
^Voloshin, S.; Zhang, Y. (1996). "Flow study in relativistic nuclear collisions by Fourier expansion of azimuthal particle distributions". Zeitschrift für Physik C. 70 (4): 665–672. arXiv:hep-ph/9407282. doi:10.1007/s002880050141. S2CID 118925144.
^ abSnellings, R. (2011). "Elliptic flow: A brief review". New Journal of Physics. 13 (5): 055008. arXiv:1102.3010. Bibcode:2011NJPh...13e5008S. doi:10.1088/1367-2630/13/5/055008. S2CID 119254339.
"ALICE gets with the flow". CERN Courier. 30 March 2011.
Cramer, John G. . Analog Science Fiction and Fact. Archived from the original on 26 January 2012. Retrieved 11 March 2012.
January 01, 1970
elliptic, flow, relativistic, heavy, collisions, produce, very, large, numbers, subatomic, particles, directions, such, collisions, flow, refers, energy, momentum, number, these, particles, varies, with, direction, elliptic, flow, measure, flow, uniform, direc. Relativistic heavy ion collisions produce very large numbers of subatomic particles in all directions In such collisions flow refers to how energy momentum and number of these particles varies with direction 1 and elliptic flow is a measure of how the flow is not uniform in all directions when viewed along the beam line Elliptic flow is strong evidence for the existence of quark gluon plasma and has been described as one of the most important observations measured at the Relativistic Heavy Ion Collider RHIC 2 3 Elliptic flow describes the azimuthal momentum space anisotropy of particle emission from non central heavy ion collisions in the plane transverse to the beam direction and is defined as the second harmonic coefficient of the azimuthal Fourier decomposition of the momentum distribution 4 Elliptic flow is a fundamental observable since it directly reflects the initial spatial anisotropy of the nuclear overlap region in the transverse plane directly translated into the observed momentum distribution of identified particles Since the spatial anisotropy is largest at the beginning of the evolution elliptic flow is especially sensitive to the early stages of system evolution 5 A measurement of elliptic flow thus provides access to the fundamental thermalization time scale and many more things in the early stages of a relativistic heavy ion collision 4 Notes edit Reisdorf W Ritter H G 1997 Collective Flow in Heavy Ion Collisions Annual Review of Nuclear and Particle Science 47 663 709 Bibcode 1997ARNPS 47 663R doi 10 1146 annurev nucl 47 1 663 Ollitrault J Y 1992 Anisotropy as a signature of transverse collective flow Physical Review D 46 1 229 245 Bibcode 1992PhRvD 46 229O doi 10 1103 PhysRevD 46 229 PMID 10014754 Voloshin S Zhang Y 1996 Flow study in relativistic nuclear collisions by Fourier expansion of azimuthal particle distributions Zeitschrift fur Physik C 70 4 665 672 arXiv hep ph 9407282 doi 10 1007 s002880050141 S2CID 118925144 a b Snellings R 2011 Elliptic flow A brief review New Journal of Physics 13 5 055008 arXiv 1102 3010 Bibcode 2011NJPh 13e5008S doi 10 1088 1367 2630 13 5 055008 S2CID 119254339 Ackermann K Adams N Adler C Ahammed Z Ahmad S Allgower C Amsbaugh J Anderson M Anderssen E Arnesen H Arnold L Averichev G Baldwin A Balewski J Barannikova O Barnby L Baudot J Beddo M Bekele S Belaga V Bellwied R Bennett S Bercovitz J Berger J Betts W Bichsel H Bieser F Bland L Bloomer M et al 2001 Elliptic Flow in Au Au Collisions at sNN 130 GeV Physical Review Letters 86 3 402 407 arXiv nucl ex 0009011 Bibcode 2001PhRvL 86 402A doi 10 1103 PhysRevLett 86 402 PMID 11177841 References edit ALICE gets with the flow CERN Courier 30 March 2011 Cramer John G Solving the RHIC Puzzle Analog Science Fiction and Fact Archived from the original on 26 January 2012 Retrieved 11 March 2012 Retrieved from https en wikipedia org w index php title Elliptic flow amp oldid 1085397018, wikipedia, wiki, book, books, library,
