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arXiv hep-ph/0303003hep-phnucl-th
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质子、中子和氘核的Gerasimov-Drell-Hearn和Burkhartt-Cottingham求和定则

Gerasimov-Drell-Hearn and Burkhardt-Cottingham Sum Rules for Proton, Neutron and Deuteron

O. V. Teryaev

摘要:

给出了质子、中子和氘的广义Gerasimov-Drell-Hearn求和规则的描述。质子的考虑证实了早先的猜想,即结构函数$g_T$具有平滑的$Q^2-$依赖性,而结构函数$g_2$由于弹性对Burkhartt-Cottingham求和规则的贡献而快速变化。中子的情况与比约肯求和规则有密切的联系。氘核的例子揭示了光解离通道的重要作用,导致在非常低的$Q^2$下的强核校正。提出了反映核子与原子核结构之间微妙相互作用的新的近似求和规则。

英文摘要:

A description of the generalized Gerasimov-Drell-Hearn sum rules for proton, neutron and deuteron is suggested. The proton consideration confirms the earlier conjecture, that the structure function $g_T$ features a smooth $Q^2-$dependence, while the structure function $g_2$ is changing rapidly, due to the elastic contribution to the Burkhardt-Cottingham sum rule. The neutron case features the close connection to the Bjorken sum rule. The deuteron case reveals the crucial role of photodesintegration channel, resulting in the strong nuclear correction at very low $Q^2$. The new approximate sum rules for this channel reflecting the delicate interplay between nucleon and nuclear structure are suggested.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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