# High-precision calculation of the Quark–Gluon coupling from Lattice QCD

- Institution: CERN
- Speaker: Alberto Ramos Martinez
- Year: 2026
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3020859)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The value of the strong coupling constant is key to understanding current high-energy experimental data. I will present a first-principles determination of αs using dedicated lattice-QCD techniques. The talk will focus on the methods that have enabled us to achieve sub-percent precision—our uncertainty is roughly half that of the combined phenomenological determinations—while keeping theoretical and other systematic errors sub-dominant. This result reduces theoretical uncertainties in high-energy experiments, enhancing prospects for new-physics discovery and enabling rigorous precision tests of the Standard Model, while confirming QCD as the theory of strong interactions across all energy scales.

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## Lectures

1. [High-precision calculation of the Quark–Gluon coupling from Lattice QCD](https://invisiblenetwork.ai/learn/cern/3020859/7f8932bae801), 1 h 9 min (CERN's player)