Directed Flow of Light Nuclei in Au+Au Collisions at AGS Energies
E877 Collaboration, J. Barrette, R. Bellwied, S. Bennett, R. Bersch, P. Braun-Munzinger, W. C. Chang, W. E. Cleland, M. Clemen, J. Cole, T. M. Cormier, Y. Dai, G. David, J. Dee, O. Dietzsch, M. Drigert, K. Filimonov, S. C. Johnson, J. R. Hall, T. K. Hemmick, N. Herrmann, B. Hong, Y. Kwon, R. Lacasse, Q. Li, T. W. Ludlam, S. K. Mark, R. Matheus, S. McCorkle, J. T. Murgatroyd, D. Miśkowiec, E. O'Brien, S. Panitkin, P. Paul, T. Piazza, M. Pollack, C. Pruneau, M. N. Rao, E. Reber, M. Rosati, N. C. daSilva, S. Sedykh, U. Sonnadara, J. Stachel, E. M. Takagui, S. Voloshin, T. B. Vongpaseuth, G. Wang, J. P. Wessels, C. L. Woody, N. Xu, Y. Zhang, C. Zou
Abstract
Directed flow of deuterons, tritons, 3He, and 4He is studied in Au+Au collisions at a beam momentum of about 10.8 A GeV/c. Flow of all particles is analyzed as a function of transverse momentum for different centralities of the collision. The directed flow signal, v1(pt), is found to increase with particle mass. This mass dependence is strongest in the projectile rapidity region.
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