QQbar_threshold
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residues.hpp
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1 
29 #pragma once
30 
31 #include "parameters.hpp"
32 
34 namespace QQbar_threshold{
35 
37 
68  double ttbar_residue(
69  int n, double mu, double m, order o,
70  options opt = top_options()
71  );
72 
74 
106  double bbbar_residue(
107  int n, double mu, double m, order o,
108  options opt = bottom_options()
109  );
110 
111  namespace detail{
118  double QQbar_residue(int n, parameters const & p);
119 
126  double Z_LO(int n, parameters const & p);
127 
128  // higher order corrections
129  // Z = Z_LO * (1 + z1 + ... + z<order>)
130  double z1(int n, parameters const & p);
131  double z2(int n, parameters const & p);
132  double z3(int n, parameters const & p);
133 
134  //NLO corrections - needed for double insertion
135  double delta_f1_light(int n, double xi_n);
136  double delta_f1_Coulomb(int n, parameters const & p);
137  //needed for pole resummation in the Green function
138  double f1(int n, parameters const & p);
139  }
140 
141 }
double ttbar_residue(int n, double mu, double m, order o, options opt=top_options())
Computes the residue of an S-wave bound state.
options top_options()
Default option settings for top-related functions.
double bbbar_residue(int n, double mu, double m, order o, options opt=bottom_options())
Computes the residue of an S-wave bound state.
options bottom_options()
Default option settings for bottom-related functions.
Options for functions.