def bpll_obs(function, q2, wc_obj, par, B, P, l1, l2):
ml1 = par['m_'+l1]
ml2 = par['m_'+l2]
mB = par['m_'+B]
mP = par['m_'+P]
if q2 <= (ml1+ml2)**2 or q2 > (mB-mP)**2:
return 0
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
h = helicity_amps(q2, wc_obj, par, B, P, l1, l2)
h_bar = helicity_amps_bar(q2, wc_obj, par, B, P, l1, l2)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, 0, ml1, ml2)
J_bar = angular.angularcoeffs_general_p(h_bar, q2, mB, mP, mb, 0, ml1, ml2)
return function(J, J_bar)
def bpll_obs(function, q2, wc_obj, par, B, P, l1, l2):
ml1 = par['m_'+l1]
ml2 = par['m_'+l2]
mB = par['m_'+B]
mP = par['m_'+P]
if q2 <= (ml1+ml2)**2 or q2 > (mB-mP)**2:
return 0
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
h = helicity_amps(q2, wc_obj, par, B, P, l1, l2)
h_bar = helicity_amps_bar(q2, wc_obj, par, B, P, l1, l2)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, 0, ml1, ml2)
J_bar = angular.angularcoeffs_general_p(h_bar, q2, mB, mP, mb, 0, ml1, ml2)
return function(J, J_bar)
def _get_angularcoeff(q2, wc_obj, par, B, P, lep, nu):
ml = par['m_' + lep]
mB = par['m_' + B]
mP = par['m_' + P]
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
wc = get_wceff_fccc2(wc_obj,
par,
meson_quark[(B, P)],
lep,
nu,
mb,
scale,
nf=5)
N = prefactor(q2, par, B, P, lep)
ff = get_ff(q2, par, B, P)
qi_qj = meson_quark[(B, P)]
if qi_qj == 'bu':
mlight = 0. # neglecting the up quark mass
if qi_qj == 'bc':
mlight = running.get_mc(
par, scale) # this is needed for scalar contributions
h = angular.helicity_amps_p(q2, mB, mP, mb, mlight, ml, 0, ff, wc, N)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, mlight, ml, 0)
return J
def bpll_obs(function, q2, wc_obj, par, B, P, lep):
ml = par['m_'+lep]
mB = par['m_'+B]
mP = par['m_'+P]
if q2 <= (ml+ml)**2 or q2 > (mB-mP)**2:
return 0
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
h = helicity_amps(q2, wc_obj, par, B, P, lep)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, 0, ml, ml)
if lep == lep:
h_bar = helicity_amps_bar(q2, wc_obj, par, B, P, lep)
J_bar = angular.angularcoeffs_general_p(h_bar, q2, mB, mP, mb, 0, ml, ml)
else:
# for LFV decays, don't bother about the CP average. There is no strong phase.
J_bar = J
return function(J, J_bar)
def bpll_obs(function, q2, wc_obj, par, B, P, lep):
ml = par['m_' + lep]
mB = par['m_' + B]
mP = par['m_' + P]
if q2 <= (ml + ml)**2 or q2 > (mB - mP)**2:
return 0
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
h = helicity_amps(q2, wc_obj, par, B, P, lep)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, 0, ml, ml)
if lep == lep:
h_bar = helicity_amps_bar(q2, wc_obj, par, B, P, lep)
J_bar = angular.angularcoeffs_general_p(h_bar, q2, mB, mP, mb, 0, ml,
ml)
else:
# for LFV decays, don't bother about the CP average. There is no strong phase.
J_bar = J
return function(J, J_bar)
def get_angularcoeff(q2, wc_obj, par, B, P, lep):
ml = par['m_'+lep]
mB = par['m_'+B]
mP = par['m_'+P]
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
wc = get_wceff_fccc(wc_obj, par, meson_quark[(B,P)], lep, mb, scale, nf=5)
N = prefactor(q2, par, B, P, lep)
ff = get_ff(q2, par, B, P)
qi_qj = meson_quark[(B, P)]
if qi_qj == 'bu':
mlight = 0. # neglecting the up quark mass
if qi_qj == 'bc':
mlight = running.get_mc(par, scale) # this is needed for scalar contributions
h = angular.helicity_amps_p(q2, mB, mP, mb, mlight, ml, 0, ff, wc, N)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, mlight, ml, 0)
return J
def _get_angularcoeff(q2, wc_obj, par, B, P, lep, nu):
scale = config['renormalization scale']['bpll']
mb = running.get_mb(par, scale)
wc = get_wceff_fccc(wc_obj, par, meson_quark[(B,P)], lep, nu, mb, scale, nf=5)
if lep != nu and all(C == 0 for C in wc.values()):
return {'a': 0, 'b': 0, 'c': 0} # if all WCs vanish, so does the AC!
ml = par['m_'+lep]
mB = par['m_'+B]
mP = par['m_'+P]
N = prefactor(q2, par, B, P, lep)
ff = get_ff(q2, par, B, P)
qi_qj = meson_quark[(B, P)]
if qi_qj == 'bu':
mlight = 0. # neglecting the up quark mass
if qi_qj == 'bc':
mlight = running.get_mc(par, scale) # this is needed for scalar contributions
h = angular.helicity_amps_p(q2, mB, mP, mb, mlight, ml, 0, ff, wc, N)
J = angular.angularcoeffs_general_p(h, q2, mB, mP, mb, mlight, ml, 0)
return J
