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Azimuthal Anisotropy of Photon and Charged Particle Emission in Pb+Pb Collisions at 158 A GeV/c

M.M. Aggarwal Z. Ahammed A.L.S. Angelis V. Antonenko V. Areev V. Astakhov V. Avdeitchikov T.C. Awes P.V.K.S. Baba S.K. Badyal S. Bathe B. Batiounia T. Bernier V.S. Bhatia C. Blume D. Bucher H. Busching L. Carlen S. Chattopadhyay M.P. Decowski H. Delagrange 1 P. Donni M.R. Dutta Majumdar A.K. Dubey K. El Chenawi K. Enosawa S. Fokin V. Frolov M.S. Ganti S. Garpman O. Gavrishchuk F.J.M. Geurts T.K. Ghosh R. Glasow B. Guskov H.A. Gustafsson H.H. Gutbrod I. Hrivnacova M. Ippolitov H. Kalechofsky K. Karadjev K. Karpio B.W. Kolb I. Kosarev I. Koutcheryaev A. Kugler P. Kulinich M. Kurata A. Lebedev H. Lohner L. Luquin 1 D.P. Mahapatra V. Manko M. Martin Gines Martinez Garcia 1 A. Maximov Y. Miake G.C. Mishra B. Mohanty M.-J. Mora D. Morrison T. Moukhanova D.S. Mukhopadhyay H. Naef B.K. Nandi S.K. Nayak T.K. Nayak A. Nianine V. Nikitine S. Nikolaev P. Nilsson S. Nishimura P. Nomokonov J. Nystrand A. Oskarsson I. Otterlund T. Peitzmann D. Peressounko V. Petracek S.C. Phatak W. Pinganaud F. Plasil M.L. Purschke J. Rak R. Raniwala S. Raniwala N.K. Rao F. Retiere K. Reygers G. Roland L. Rosselet I. Roufanov C. Roy 1 J.M. Rubio S.S. Sambyal R. Santo S. Sato H. Schlagheck H.-R. Schmidt Y. Schutz G. Shabratova T.H. Shah I. Sibiriak T. Siemiarczuk D. Silvermyr B.C. Sinha N. Slavine K. Soderstrom G. Sood S.P. Sorensen P. Stankus G. Stefanek P. Steinberg E. Stenlund M. Sumbera T. Svensson A. Tsvetkov L. Tykarski E.C. van der Pijll N. van Eijndhoven G.J. van Nieuwenhuizen A. Vinogradov Y.P. Viyogi A. Vodopianov S. Voros B. Wyslouch G.R. Young
Abstract : The azimuthal distributions of photons and charged particles with respect to the event plane are investigated as a function of centrality in Pb + Pb collisions at 158 A GeV/c in the WA98 experiment at the CERN SPS. The anisotropy of the azimuthal distributions is characterized using a Fourier analysis. For both the photon and charged particle distributions the first two Fourier coefficients are observed to decrease with increasing centrality. The observed anisotropies of the photon distributions compare well with the expectations from the charged particle measurements for all centralities.
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Submitted on : Wednesday, January 19, 2005 - 1:22:10 PM
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M.M. Aggarwal, Z. Ahammed, A.L.S. Angelis, V. Antonenko, V. Areev, et al.. Azimuthal Anisotropy of Photon and Charged Particle Emission in Pb+Pb Collisions at 158 A GeV/c. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2005, 41, pp.287-296. ⟨10.1140/epjc/s2005-02249-2⟩. ⟨in2p3-00023612⟩

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