The Kirill Melnikov Lab

The Melnikov Lab focuses on advancing precision theoretical predictions for high-energy particle collisions, with a particular emphasis on perturbative quantum chromodynamics (QCD) and phenomenology relevant to the Large Hadron Collider (LHC). A central research theme is the computation and understanding of higher-order QCD corrections to Higgs boson production and decay processes, especially in weak-boson fusion, where subtle nonfactorizable effects play an important role. The group develops and applies state-of-the-art analytical and semi-analytical techniques to control infrared and collinear singularities, evaluate multi-loop and multi-leg amplitudes, and construct subtraction schemes that enable next-to-next-to-leading order (and beyond) calculations. These methods are essential for producing reliable theoretical predictions that can match the ever-increasing experimental precision of collider measurements. Applications of this work are directly tied to testing the Standard Model at the highest energies, improving the interpretation of LHC data, and enhancing sensitivity to possible signals of new physics. Accurate theoretical predictions are crucial for extracting fundamental parameters, validating experimental analyses, and constraining extensions of the Standard Model. The lab is a good fit for students with a strong interest in theoretical particle physics, quantum field theory, and advanced calculations. Ideal candidates are comfortable with analytical problem-solving, mathematical methods, and symbolic or numerical computation, and are motivated to work on challenging problems at the interface of theory and experiment.