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arXiv 0907.2317hep-ex
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在HERA上测量大动量转移光子的衍射散射

Measurement of Diffractive Scattering of Photons with Large Momentum Transfer at HERA

Tomas Hreus

摘要:

利用HERA的H1探测器首次测量了具有大动量转移的准实光子的衍射散射。单微分截面测量作为W的函数,入射的光子-质子的质量中心的能量,和t,在质子顶点转移的四个动量的平方。的W依赖性很好地描述了微扰QCD模型使用领先的对数近似的BFKL演化,而测量的|t|的依赖性比预测的更难。

英文摘要:

The first measurement of diffractive scattering of quasi-real photons with large momentum transfer is made using the H1 detector at HERA. Single differential cross sections are measured as a function of W, the incident photon-proton centre of mass energy, and t, the square of the four-momentum transferred at the proton vertex. The W dependence is well described by a perturbative QCD model using a leading logarithmic approximation of the BFKL evolution, whereas the measured |t| dependence is harder than predicted.

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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