"Table 8" of "Three- and Four-jet Production at Low x at HERA"

DESY-HERA. Measurement of the cross sections for DIS 3- and 4-jet production in collisions of 27.5 GeV positrons with 920 GeV protons at a centre of mass energy of 319 GeV. The data come from the 1999-2000 running periods with a total integrated luminosity of 44.2 pb-1. The data cover the Q**2 region from 5 to 80 GeV**2 and X from 0.0001 to 0.01. Cross sections are presented for a number of different variables including Xi = 2*Ei/(E1+E2+E3). Jets are ordered so that E1 & gt; E2 & gt; E3. See the text of the article for detailed definitions. Data are also given for events with one forward jet and two central jets and also with two forward jets and one central jet.

DESY-HERA实验针对质心系能量（centre of mass energy）319 GeV下，27.5 GeV正电子与920 GeV质子对撞产生的深度非弹性散射（Deep Inelastic Scattering, DIS）3喷注（3-jet）与4喷注（4-jet）过程的截面展开测量。本数据集取自1999至2000年的取数运行时段，总积分亮度（integrated luminosity）为44.2 pb⁻¹。数据覆盖的四动量转移平方（Q²）范围为5~80 GeV²，Bjorken x变量（X）范围为0.0001~0.01。本文给出了包括ξ（Xi）=2Eᵢ/(E₁+E₂+E₃)在内的多种不同变量对应的截面结果。喷注按能量高低排序，满足E₁ > E₂ > E₃。详细定义参见论文正文。此外还提供了包含1个前向喷注与2个中心喷注，以及2个前向喷注与1个中心喷注的事件的相关数据。