# ICHEP 2016 Chicago

Aug 3 – 10, 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

## Role of low-energy observables in precision Higgs boson analyses (15' + 5')

Aug 4, 2016, 6:40 PM
20m
Chicago 10

### Chicago 10

Oral Presentation Higgs Physics

### Speaker

Alexey Petrov (Wayne State University)

### Description

A conventional approach to precision calculations of Higgs boson observables uses quark masses $m_c$ and $m_b$ as inputs. However, quark masses are single numbers that hide a variety of low-energy data from which they are extracted, and also hide the various sources of theoretical uncertainties and correlations with additional input parameters such as $\alpha_s$. Higher-precision calculations, which are needed to give meaning to future measurements, require more direct engagement with the low-energy data in a global analysis. We present an initial calculation in this direction, which illustrates the procedure and reveals some of the theory uncertainties that challenge subpercent determinations of Higgs boson partial widths.

### Primary author

Alexey Petrov (Wayne State University)

### Co-authors

James Daniel Wells (University of Michigan (US)) Stefan Pokorski (University of Warsaw (PL)) Zhengkang Zhang (University of Michigan)