24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

The Nf=3 gradient flow coupling running from 4GeV to 200MeV

25 Jul 2016, 17:05
20m
Building 67 Room 1007 (Highfield Campus, University of Southampton)

Building 67 Room 1007

Highfield Campus, University of Southampton

Talk Standard Model Parameters and Renormalization Standard Model Parameters and Renormalization

Speaker

Dr Alberto Ramos (CERN)

Description

A fundamental step in the ALPHA collaboration efforts to determine the fundamental parameters of $N_f=3$ QCD at the electroweak scale in terms of hadronic quantities is the connection of an intermediate scale $\sim 4{\rm GeV}$ with a hadronic scale. In this talk we will show that using the Gradient Flow running coupling this task can be achieved with a very high precision. Our analysis will pay special attention to the continuum limit of flow quantities and reach a precision below 2% in the scale factor for a change of the coupling from $g^2=13$ to $g^2=2.5$.

Primary authors

Dr Alberto Ramos (CERN) Dr Mattia Dalla Brida (DESY - Zeuthen) Dr Patrick Fritzsch (IFT UAM/CSIC) Prof. Rainer Sommer (NIC @ DESY) Dr Stefan Sint (Trinity college Dublin) Dr Tomasz Korzec (Bergische Universität Wuppertal)

Presentation Materials

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