Contributor info: Dr Yacine Haddad

Nicolas Berger, Claudia Bertella, Matteo Bonanomi, Nihal Brahimi, Thomas P. Calvet, Milene Calvetti, Valerio Dao, Marco Delmastro, Michael Duehrssen-Debling, Paolo Francavilla, Yacine Haddad, Sarah Heim, Jelena Jovicevic, Oleh Kivernyk, Maria Moreno Llacer, Jonathon M. Langford, Changqiao Li, Giovanni Marchiori, Josh A. McFayden, Johannes K. L. Michel, Predrag Milenovic, Carlo E. Pandini, Edward Scott, Frank J. Tackmann, Kerstin Tackmann, Lorenzo Viliani, Meng Xiao, Hongtao Yang

SciPost Phys. Comm. Rep. 15 (2026) · published 7 January 2026 | Toggle abstract · pdf

Simplified Template Cross Sections (STXS) have been adopted by the LHC experiments as a common framework for Higgs measurements. Their purpose is to reduce the theoretical uncertainties that are directly folded into the measurements as much as possible, while at the same time allowing for the combination of the measurements between different decay channels as well as between experiments. We report the complete, revised definition of the STXS kinematic bins (stage 1.1 and stage 1.2), which have been used for the measurements by the ATLAS and CMS experiments using the full LHC Run 2 datasets. The main focus is on the four dominant Higgs production processes, namely gluon-fusion, vector-boson fusion, production in association with a vector boson and in association with a $t\bar t$ pair. We also comment briefly on the treatment of other production modes.

Gaetano Barone, Jiayi Chen, Stephane Cooperstein, Nikita Dolganov, Silvia Ferrario Ravasio, Yacine Haddad, Stefan Höche, Barbara Jäger, Alexander Karlberg, Alexander Mück, Mathieu Pellen, Christian T. Preuss, Daniel Reichelt, Simon Reinhardt, Marco Zaro

SciPost Phys. Comm. Rep. 13 (2025) · published 5 November 2025 | Toggle abstract · pdf

In this article, we summarise the recent experimental measurements and theoretical work on Higgs boson production via vector-boson fusion at the LHC. Along with this, we provide state-of-the-art predictions at fixed order as well as with parton-shower corrections within the Standard Model at $13.6\,\text{TeV}$. The results are presented in the form of multi-differential distributions as well as in the Simplified Template Cross Section bins. All materials and outputs of this study are available on public repositories. Finally, following findings in the literature, recommendations are made to estimate theoretical uncertainties related to parton-shower corrections.