26 July 2026 to 1 August 2026
University of Maryland, College Park
US/Eastern timezone

Towards the smeared R-ratio with Nf=2+1+1 highly improved staggered quarks

27 Jul 2026, 14:20
20m
Pyon Su (Adele H. Stamp Student Union)

Pyon Su

Adele H. Stamp Student Union

3972 Campus Dr, College Park, MD 20742
Contributed talk Quark and lepton flavor physics Quark and lepton flavor physics

Speaker

Matteo Saccardi (Colorado State University)

Description

In this talk we present the ongoing effort of the Fermilab Lattice and MILC Collaboration to compute the smeared $R$-ratio using $N_f=2+1+1$ HISQ gauge-field ensembles. We discuss closure tests for mock data which incorporate taste-breaking and finite-volume effects to mimic real light-quark connected vector isovector correlation functions. This enables a detailed comparison between different spectral reconstruction methods, suitably adapted to include staggered oscillations, paving the way to real lattice data applications with controlled systematic errors.

Authors

Dr Adeilton Dean Marques Valois (University of Granada) CARLETON DETAR (University of Utah) Jacob Sitison (University of Colorado Boulder) Matteo Saccardi (Colorado State University) Ramón Merino (Universidad de Granada) Shaun Lahert William Jay (Colorado State University)

Presentation materials