Barcelona Institute of Science and Technology

The chromomagnetic moment of a heavy quark with hyperasymptotic precision

A bstract We determine the normalization of the leading infrared renormalon of the chromomagnetic moment of a heavy quark. Estimates of higher order coefficients of the perturbative series are given. We compute the hyperfine splitting of the B and D mesons for the ground state wi...

J-PAS: Semisupervised Sim-to-Obs Transfer for Robust Star–Galaxy–Quasar Classification

Abstract Modern astrophysics and cosmology increasingly rely on simulations and cross-survey analyses, yet differences in instrumentation, calibration, and modeling introduce distribution mismatches between simulated and observed datasets (domain shift). This occurs when the join...

Techno-economic feasibility of offshore wind-based ammonia production for La Guajira, North Sea, and Gulf of Roses

This study evaluates the techno-economic feasibility of offshore wind-based ammonia production in 2035 and 2050. A pseudo-dynamic modeling framework with capacity optimization is applied to three offshore sites in Colombia, Denmark, and Spain using long-term wind data to capture...