contribution_factors Struct Reference

Multiplicative coefficients for the potentials and current matching coefficients. More...

Public Attributes
std::array< double, 3 >	v_Coulomb = {{1.,1.,1.}}
	Corrections \(\hat{\cal V}_C^{(1)},\hat{\cal V}_C^{(2)},\hat{\cal V}_C^{(3)}\) to the colour Coulomb potential.
std::array< double, 2 >	v_delta = {{1.,1.}}
	Corrections \(\hat{\cal V}_{1/m^2}^{(1)},\hat{\cal V}_{1/m^2}^{(2)}\) to the \(\delta\) (or \(1/m^2\)) potential.
std::array< double, 2 >	v_r2inv = {{1.,1.}}
	Corrections \(\hat{\cal V}_{1/m}^{(1)},\hat{\cal V}_{1/m}^{(2)}\) to the \(1/r^2\) (or \(1/m\)) potential.
std::array< double, 2 >	v_p2 = {{1.,1.}}
	Corrections \(\hat{\cal V}_{p}^{(1)},\hat{\cal V}_{p}^{(2)}\) to the momentum dependent potential.
std::array< double, 1 >	v_kinetic = {{1.}}
	Kinetic corrections.
std::array< double, 1 >	ultrasoft = {{1.}}
	Ultrasoft corrections.
std::array< double, 1 >	v_Higgs = {{1.}}
	Higgs potential.
std::array< double, 1 >	v_QED_Coulomb = {{1.}}
	Corrections due to the classical (QED) Coulomb potential.
std::array< double, 1 >	v_width2 = {{1.}}
	Width^2 insertion corrections.
std::array< double, 1 >	v_width_kinetic = {{1.}}
	Width*p^2 insertion corrections.
std::array< double, 1 >	width_ep = {{1.}}
	correction from O(ep) contribution to the width
std::array< double, 3 >	cv = {{1.,1.,1.}}
	Corrections to the hard matching coefficient \(c_v\).
std::array< double, 2 >	cv_Higgs = {{1.,1.}}
	Higgs corrections to the hard matching coefficient \(c_v\).
std::array< double, 1 >	Cv_QED = {{1.}}
	QED corrections to hard matching with vector coupling to leptons.
std::array< double, 1 >	Cv_WZ = {{1.}}
	W,Z corrections to hard matching with vector coupling to leptons.
std::array< double, 1 >	Ca_QED = {{1.}}
	QED corrections to hard matching with axialvector coupling to leptons.
std::array< double, 1 >	Ca_WZ = {{1.}}
	W,Z corrections to hard matching with axialvector coupling to leptons.
std::array< double, 2 >	dv = {{1.,1.}}
	Sub-leading hard matching coefficient \(d_v\).
std::array< double, 1 >	ca = {{1.}}
	P-wave hard matching coefficient \(c_a\).
std::array< double, 2 >	nonresonant = {{1., 1.}}
	Non-resonant cross section.

Detailed Description

Multiplicative coefficients for the potentials and current matching coefficients.

E.g. setting

options opt;
opt.contributions.v_delta = {{0.0, 1.0}};

implies that corrections due to the leading-order delta potential are multiplied by zero, i.e. effectively discarded, but corrections from the next-to-leading delta potential are kept.

The contributions are defined as in [9].