High-twist contribution to the longitudinal structure function $F_\mathrm{L}$ at high x

High-twist contribution to the longitudinal structure function $F_\mathrm{L}$ at high x
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高 x 处的高扭曲对纵向结构函数 $F_mathrm{L}$ 的贡献

DOI:
10.1007/s100520000179
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发表时间:
2000
期刊:
The European Physical Journal C - Particles and Fields
影响因子:
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通讯作者:
S. Alekhin
S. Alekhin
中科院分区:
--
文献类型:
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作者:
S. Alekhin

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我们对来自SLAC、BCDMS和NMC合作的高x组合深度非弹性散射(DIS)数据进行了NLO QCD拟合。提取了与模型无关的高扭转对结构函数的贡献。扭曲-4的贡献被发现是在一个定性的协议与红外renormalon模型的预测。twist-6贡献呈现出弱的负值趋势,尽管总体上,它在误差内与零相容。
We perform the NLO QCD fit to the combined deep inelastic scattering (DIS) data at highxfrom the SLAC, BCDMS, and NMC collaborations. The model-independentxshape of the high-twist contribution to structure functionis extracted. The twist-4 contribution tois found to be in a qualitative agreement with the predictions of the infrared renormalon model. The twist-6 contribution exhibits a weak trend to negative values, although on the whole, it is compatible with zero within the errors.