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首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC
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High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC

机译:小动量传递时的高能强子自旋翻转幅度和RHIC的新A(N)数据

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摘要

In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that the long tail of the hadronic potential in impact parameter space leads to a value of the slope of the reduced spin-flip amplitude larger than that of the spin-non-flip amplitude. This effect is taken into account in the calculation of the analysing power in proton-nucleus reactions at high energies. It is shown that the preliminary measurement of A(N) (for p 12C obtained by the E950 Collaboration indeed favours a spin-flip amplitude with a large slope. Predictions for A)(N) (at P)(L) = 250 GeV/c are given.
机译:在弹性高能强子-强子散射的情况下,分析了大距离贡献对自旋非翻转的斜率和自旋翻转幅度的行为的影响。可以看出,冲击参数空间中强子势的长尾导致减小的自旋翻转振幅的斜率值大于自旋非翻转振幅的斜率值。在计算高能质子核反应的分析能力时要考虑到这种影响。结果表明,对A(N)的初步测量(对于通过E950协作获得的p 12C确实有利于具有大斜率的自旋翻转振幅。对A)(N)(在P)(L)= 250 GeV的预测) / c给出。

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