From the 1 of 5 linked papers with an AI index.
5 papers
Universal Two-Loop Current--Current Renormalization of Four-Fermion Operators
Jason Aebischer, Sudeepan Datta, Pol Morell +2
The complete one- and two-loop gauge and scalar current--current contributions to the running of arbitrary dimension-six four-fermion operators are reported. The results are obtain…
Constraints on lepton-flavor mixing with third-generation new physics
Sebastiano Covone, Pol Morell, Arianna Tinari
The paper investigates how an approximate U(2)^5 flavor symmetry with new physics mainly coupled to third‑generation fermions constrains mixing between second‑ and third‑generation…
Inclusive Charmless Non-Leptonic B Decays at NLO within and beyond the Standard Model
Stefan Meiser, Pol Morell, Angel Picazo +1
We calculate the full set of BSM contributions to the inclusive non-leptonic -meson lifetime from charmless final states within the framework of the Weak Effective Theory up to…
Two-Loop Anomalous Dimensions in the LEFT: Dimension-Six Four-Fermion Operators in NDR
Jason Aebischer, Pol Morell, Marko Pesut +1
We derive the complete set of two-loop anomalous dimensions describing the mixing of four-fermion operators in the Low Energy Effective Field Theory (LEFT). The calculation is perf…
On the two-loop penguin contributions to the Anomalous Dimensions of four-quark operators
Pol Morell, Javier Virto
We revisit the Next-to-Leading Order (two-loop) contributions to the Anomalous Dimensions of four-quark operators in QCD. We devise a test for anomalous dimensions, that…