Parton-hadron duality in unpolarized and polarized structure functions
Parton-hadron duality in unpolarized and polarized structure functions
复制标题
非极化和极化结构函数中的帕子-强子对偶性
DOI:
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
S. Liuti
中科院分区:
文献类型:
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作者:
N. Bianchi;A. Fantoni;S. Liuti
We study the phenomenon of parton-hadron duality in both polarised and unpolarised electron proton scattering using the HERMES and the Jefferson Lab data, respectively. In both cases we extend a systematic perturbative QCD based analysis to the integrals of the structure functions in the resonance region. After subtracting target mass corrections and large x resummation effects, we extract the remaining power corrections up to order 1/Q^2. We find a sizeable suppression of these terms with respect to analyses using deep inelastic scattering data. The suppression appears consistently in both polarised and unpolarised data, except for the low Q^2 polarised data, where a large negative higher twist contribution remains. Possible scenarios generating this behavior are discussed.