Nuclear dependence of the production of Υ resonances at 800 GeV
作者： DM Alde , HW Baer , TA Carey , GT Garvey , A Klein
DOI: 10.1103/PHYSREVLETT.66.2285
关键词:
摘要: The yields of the 1S and sum 2S 3S \ensuremath{\Upsilon} resonances have been measured for 800-GeV protons incident on targets $^{2}\mathrm{H}$, C, Ca, Fe, W. A significant nuclear dependence is seen in yield per nucleon which, within errors, same \ensuremath{\Upsilon}(1S) \ensuremath{\Upsilon}(2S+3D) states. large decrease relative from heavy nuclei found range ${\mathit{x}}_{\mathit{F}}$0. Significant also observed ${\mathit{p}}_{\mathit{t}}$ distribution. Differential cross sections $^{2}\mathrm{H}$ are presented over ranges 0.24\ensuremath{\le}${\mathit{p}}_{\mathit{t}}$\ensuremath{\le}3.4 GeV/c -0.15\ensuremath{\le}${\mathit{x}}_{\mathit{F}}$\ensuremath{\le}0.5.
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