Parton Energy Loss Limits and Shadowing in Drell-Yan Dimuon Production
/ Authors
M. Vasiliev, M. Vasiliev, M. Beddo, C. Brown, T. Carey, T. Chang, T. Chang, W. Cooper, C. Gagliardi, G. Garvey
and 26 more authors
D. Geesaman, E. Hawker, E. Hawker, X. He, L. Isenhower, D. Kaplan, S. Kaufman, D. Koetke, W. Lee, M. Leitch, P. McGaughey, J. Moss, B. Mueller, V. Papavassiliou, J. Peng, G. Petitt, P. Reimer, P. Reimer, M. Sadler, W. Sondheim, P. Stankus, R. Towell, R. Tribble, J. Webb, J. Willis, G. Young
/ Abstract
A precise measurement of the ratios of the Drell-Yan cross section per nucleon for an 800 GeV/{ital c} proton beam incident on Be, Fe, and W targets is reported. The behavior of the Drell-Yan ratios at small target-parton momentum fraction is well described by an existing fit to the shadowing observed in deep-inelastic scattering. The cross-section ratios as a function of the incident-parton momentum fraction set tight limits on the energy loss of quarks passing through a cold nucleus. {copyright} {ital 1999} {ital The American Physical Society}
Journal: Physical Review Letters