The helix structure of the Lund string, first derived from studies devoted to the emission of soft gluons at the end of the parton cascade, may be at the origin of certain characteristic discrepancies observed in the low transverse momentum region at LEP and LHC. A study of the relation between different helix implementations and observable effects is presented. The model is extended to cover a multiparton string topology (result of parton shower), and compared with the experimental data. It is found that a helix-ordered string with a regular winding (proportional to the energy density stored in the string), is favoured by the inclusive single-particle spectra measured in the hadronic decay of Z$^0$.
Post-hoc reweighting of hadron production in the Lund string model
University of Cincinnati（辛辛那提大学）；Lund University（隆德大学）；Fermilab（费米国家加速器实验室）；International Center for Advanced Studies (ICAS)（高级研究中心）；ICIFI and ECyT-UNSAM（ICIFI和ECyT-UNSAM）
Institute of Theoretical Physics and Mark Kac Center for Complex Systems Research, Jagiellonian University（雅盖隆大学理论物理研究所与马克·卡克复杂系统研究中心）；Center for Nuclear Theory, Department of Physics and Astronomy, Stony Brook University（石溪大学物理与天文学系核理论中心）
Characterizing the hadronization of parton showers using the HOMER method
University of Cincinnati（辛辛那提大学）；Lund University（隆德大学）；Fermilab（费米国家加速器实验室）；International Center for Advanced Studies (ICAS), ICIFI and ECyT-UNSAM（高级研究中心（ICAS）、ICIFI和国立圣马丁大学理学院）
