Work

hoppet v2 release note

Year: 2026

Type: article

Abstract: We document the three main new features in the v2 release series of the hoppet parton distribution function evolution code, specifically support for N $$^3$$ 3 LO QCD evolution in the variable flavour number scheme, for the determination of hadronic structure functions for massless quarks up to N $$^3$$ 3 LO, and for QED evolution to an accuracy phenomenologically equivalent to NNLO QCD. Additionally we describe a new Python interface, CMake build option, functionality to save a hoppet table as an LHAPDF grid and update our performance benchmarks, including optimisations in interpolating PDF tables.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-025-15200-y

Authors: Alexander Karlberg, Paolo Nason, Gavin Salam, Giulia Zanderighi, Frédéric Dreyer

Institutions: European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca, Max Planck Institute for Physics, Technical University of Munich, Genentech

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Alexander von Humboldt-Stiftung, Royal Society, Science and Technology Facilities Council

Awards: Theoretical Studies of Particles and Strings, G7622377225