核强子化的多维研究
Hadronization in Nuclei - Multidimensional Study
摘要:
强子多重性在半包容性深非弹性散射测量氖,氪和氙目标相对于氘在电子束能量为27.6 GeV在HERMES。这些比值被确定为虚光子能量nu、虚光子的虚度Q2、分数强子能量z和相对于虚光子方向p_t的横强子动量的函数。分别分析了带正电荷和负电荷的π介子和K介子以及质子和反质子在二维表示的依赖性。这些结果将有助于约束强子化的机制和模型,比传统上使用综合结果更果断。在这方面的贡献突出了一些功能,特别是二维表示。
英文摘要:
Hadron multiplicities in semi-inclusive deep-inelastic scattering were measured on neon, krypton and xenon targets relative to deuterium at an electron-beam energy of 27.6 GeV at HERMES. These ratios were determined as a function of the virtual-photon energy nu, its virtuality Q2, the fractional hadron energy z and the transverse hadron momentum with respect to the virtual-photon direction p_t . Dependences were analysed separately for positively and negatively charged pions and kaons as well as protons and antiprotons in a two-dimensional representation. These results will help to constrain mechanisms and models of hadronization much more decisively than by the use of integrated results as traditionally done. A few features particular to the two-dimensional representation are highlighted in this contribution.
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