De Angelis Matthew, Forshaw Jeffrey R, Plätzer Simon
Consortium for Fundamental Physics, School of Physics & Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
Consortium for Fundamental Physics, School of Physics & Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom and Erwin Schrödinger Institute for Mathematics and Physics, University of Vienna, 1090 Wien, Austria.
Phys Rev Lett. 2021 Mar 19;126(11):112001. doi: 10.1103/PhysRevLett.126.112001.
We present first results of resumming soft gluon effects in a simulation of high-energy collisions beyond the leading-color approximation. We work to all orders in QCD perturbation theory using a new parton branching algorithm. This amplitude evolution algorithm resembles a parton shower that is able to systematically include color-suppressed terms. We find that color-suppressed terms can significantly contribute to jet veto cross sections.
我们展示了在超出领头色近似的高能碰撞模拟中重整软胶子效应的初步结果。我们使用一种新的部分子分支算法在 QCD 微扰理论中计算到所有阶次。这种振幅演化算法类似于一种能够系统地包含颜色压低项的部分子喷注。我们发现颜色压低项能对喷注否决截面有显著贡献。
