A dependence of photoproduced dijets

作者：D. Naples, N. Akchurin, P. Birmingham, H. Breuer, C. C. Chang, S. Cihangir, M. Corcoran, William L. Davis, H.R. Gustafson, H. D. Holmgren, P. A. Kasper, Don Lincoln, M. J. Longo, J. M. Marraffino, James Alan McPherson, H. Miettinen, Greg Morrow, G. S. Mutchler, Y. Onel, G. Thomas, M. M. Traynor, J. Waters, M. Webster, Jiechen Xu, Quan Zhu · 发表于：Physical Review Letters · 年份：1994 · DOI：10.1103/physrevlett.72.2341 · 被引用次数：24 · 研究领域：Particle physics theoretical and experimental studies、High-Energy Particle Collisions Research、Quantum Chromodynamics and Particle Interactions

We present a measurement of the A dependence of ${\mathit{k}}_{\mathit{T}\mathrm{\ensuremath{\varphi}}}$, the out-of-plane component of the dijet transverse momentum, in dijet events produced with a real photon beam. We also present the same measurement for dijets produced from pion-nucleus collisions in our detector. Both data sets are taken at a mean \ensuremath{\surd}s of 21 GeV in the ${\mathit{p}}_{\mathit{T}}$ range 3--7 GeV/c. A clear A dependence of comparable magnitude is seen in both processes. The energy dependence of the nuclear behavior is also extracted.