5 papers
Strongly Coupled Soft Functions
Bruno Scheihing-Hitschfeld, Zhiquan Sun
The renormalization of operators built out of Wilson lines that meet at an angle (cusp) involve what is known as the cusp anomalous dimension, a universal object appearing in many…
Towards a Quantum Information Theory of Hadronization: Dihadron Fragmentation and Neutral Polarization in Heavy Baryons
Rebecca von Kuk, Kyle Lee, Johannes K. L. Michel +1
We pioneer the application of quantum information theory to experimentally distinguish between classes of hadronization models. We adapt the CHSH inequality to the fragmentation of…
Nonperturbative Effects in Energy Correlators: From Characterizing Confinement Transition to Improving Extraction
Kyle Lee, Aditya Pathak, Iain Stewart +1
Energy correlators provide a powerful observable to study fragmentation dynamics in QCD. We demonstrate that the leading nonperturbative corrections for projected -point energy…
Transverse Momentum-Dependent Heavy-Quark Fragmentation at Next-to-Leading Order
Rebecca von Kuk, Johannes K. L. Michel, Zhiquan Sun
The transverse momentum-dependent fragmentation functions (TMD FFs) of heavy (bottom and charm) quarks, which we recently introduced, are universal building blocks that enter predi…
The Quality/Cosmology Tension for a Post-Inflation QCD Axion
Qianshu Lu, Matthew Reece, Zhiquan Sun
It is difficult to construct a post-inflation QCD axion model that solves the axion quality problem (and hence the Strong CP problem) without introducing a cosmological disaster. I…