12 pages, 7 eps figures. Talk given in memory of I.L. Solovtsov at Seminar in Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, Russia in January 2008
The relativistic Coulomb resummation factor suggested by I.L. Solovtsov is used to reanalyze the mass limits obtained for magnetic monopoles which might have been produced at the Fermilab Tevatron. The limits given by the Oklahoma experiment (Fermilab E882) are pushed close to the unitary bounds, so that the lower limits on monopole masses are increased from around 250 GeV to about 400 GeV.
Magnetic-monopole resummation justifies perturbatively calculated collider production cross sections
King’s College London（伦敦国王学院）；University of Valencia and CSIC（瓦伦西亚大学和西班牙国家研究委员会）；National Technical University of Athens（雅典国立技术大学）；Instituto de Física Corpuscular (IFIC), CSIC – Universitat de València（瓦伦西亚大学与西班牙国家研究委员会联合粒子物理研究所）；University of Alabama（阿拉巴马大学）
Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
我们推导出一个因式分解公式的生产对重色粒子在强子碰撞附近的生产阈值，建立因式分解的软和库仑效应。这形成了库仑和软修正的组合再确认的基础，包括两种效应的非平凡干扰。我们开发了一个有效的重申形式主义在NNLL精度使用的动量空间方法软胶子重申。本文给出了在LHC和Tevatron上NLL网格化的方反夸克产生截面的数值计算结果，包括阈值以下的方反夸克束缚态的贡献。在14 TeV LHC的200 GeV-3 TeV夸克质量区，在次领先级近似的基础上，总修正量为（4-20）%。总截面的尺度依赖性也减小了。
The $q_{\mathrm{T}}$ and $Δϕ_{t\bar{t}}$ spectra in top-antitop hadroproduction at NNLL+NNLO: the interplay of soft-collinear resummation and Coulomb singularities
