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Account

Table 5 Breakdown of contributions to the uncertainty in the fitted values of \(\mu _{VH(c{\bar{c}})}\), \(\mu _{VW(cq)}\) and \(\mu _{VZ(c{\bar{c}})}\). The sum in quadrature of uncertainties from different sources may differ from the total due to correlations. In cases where the upward and downward systematic variations have different values, the mean of the absolute values is shown

From: Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector

Source of uncertainty

\(\mu _{VH(c{\bar{c}})}\)

\(\mu _{VW(cq)}\)

\(\mu _{VZ(c{\bar{c}})}\)

Total

 

15.3

0.24

0.48

Statistical

 

10.0

0.11

0.32

Systematic

 

11.5

0.21

0.36

Statistical uncertainties

Signal normalisation

7.8

0.05

0.23

Other normalisations

5.1

0.09

0.22

Theoretical and modelling uncertainties

\(VH(\rightarrow c{\bar{c}})\)

 

2.1

\( <0.01 \)

0.01

\(\text {Z}\,+\,\text {jets}\)

 

7.0

0.05

0.17

Top quark

 

3.9

0.13

0.09

\(\text {W}\,+\,\text {jets}\)

 

3.0

0.05

0.11

Diboson

 

1.0

0.09

0.12

\(VH(\rightarrow b{\bar{b}})\)

 

0.8

\( <0.01 \)

0.01

Multi-jet

 

1.0

0.03

0.02

Simulation samples size

 

4.2

0.09

0.13

Experimental uncertainties

Jets

 

2.8

0.06

0.13

Leptons

 

0.5

0.01

0.01

\(E_{\text {T}}^{\text {miss}}\)

 

0.2

0.01

0.01

Pile-up and luminosity

0.3

0.01

0.01

Flavour tagging

c-jets

1.6

0.05

0.16

b-jets

1.1

0.01

0.03

light-jets

0.4

0.01

0.06

\(\tau \)-jets

0.3

0.01

0.04

Truth-flavour tagging

\(\Delta R\) correction

3.3

0.03

0.10

Residual non-closure

1.7

0.03

0.10