Module flavio.physics.bdecays.bvll.nonfactorizable

Functions for spectator scattering corrections to $B\to V\ell^+\ell^-$ decays.

This includes weak annihilation, chromomagnetic contributions, and light quark-loop spectator scattering.

Functions

def ha_qcdf_function(B, V)

Expand source code

def ha_qcdf_function(B, V):
    scale = config['renormalization scale']['bvll']
    label = meson_quark[(B,V)] + 'ee' # the lepton flavour is irrelevant here
                                      # as only dipole and 4-quark operators contribute!
    def function(wc_obj, par_dict, q2, cp_conjugate):
        par = par_dict.copy()
        if cp_conjugate:
            par = conjugate_par(par)
        wc = wctot_dict(wc_obj, label, scale, par)
        if cp_conjugate:
            wc = conjugate_wc(wc)
        return flavio.physics.bdecays.bvll.qcdf.helicity_amps_qcdf(q2, wc, par, B, V)
    return function

def ha_qcdf_interpolate_function(B, V, contribution='all')

Expand source code

def ha_qcdf_interpolate_function(B, V, contribution='all'):
    scale = config['renormalization scale']['bvll']
    def function(wc_obj, par_dict, q2, cp_conjugate):
        return flavio.physics.bdecays.bvll.qcdf_interpolate.helicity_amps_qcdf(q2, par_dict, B, V, cp_conjugate, contribution)
    return function