def _get_sm_left(self, scale, f, loop=3):
C_in_SM = {}
parameters = default_parameters.copy()
m_d = qcd.m_s(parameters['m_d'],
scale,
f,
parameters['alpha_s'],
loop=loop)
m_s = qcd.m_s(parameters['m_s'],
scale,
f,
parameters['alpha_s'],
loop=loop)
m_b = qcd.m_b(parameters['m_b'],
scale,
f,
parameters['alpha_s'],
loop=loop)
m_u = qcd.m_s(parameters['m_u'],
scale,
f,
parameters['alpha_s'],
loop=loop)
m_c = qcd.m_c(parameters['m_c'],
scale,
f,
parameters['alpha_s'],
loop=loop)
# running ignored for alpha_e and lepton mass
m_e = parameters['m_e']
m_mu = parameters['m_mu']
m_tau = parameters['m_tau']
C_in_SM['gs'] = sqrt(
4 * pi * qcd.alpha_s(scale, f, parameters['alpha_s'], loop=loop))
C_in_SM['e'] = sqrt(4 * pi * parameters['alpha_e'])
C_in_SM['Me'] = np.array([[m_e, 0, 0], [0, m_mu, 0], [0, 0, m_tau]])
C_in_SM['Md'] = np.array([[m_d, 0, 0], [0, m_s, 0], [0, 0, m_b]])
C_in_SM['Mu'] = np.array([[m_u, 0], [0, m_c]])
C_in_SM['Mnu'] = np.array([[0, 0, 0], [0, 0, 0], [0, 0, 0]]) # update?
return C_in_SM
def test_m_c(self):
self.assertAlmostEqual(m_c(1.2, 50, 5), 0.612466, delta=deltam)
self.assertAlmostEqual(m_c(1.2, 2, 4), 1.00652, delta=deltam)
self.assertAlmostEqual(m_c(1.2, 1, 3), 1.32125, delta=deltam)
self.assertAlmostEqual(m_c(1.279, 50, 5, alphasMZ=0.1181, loop=5),
0.66840,
delta=deltam)
self.assertAlmostEqual(m_c(1.279, 2, 4, alphasMZ=0.1181, loop=5),
1.09811,
delta=deltam)
self.assertAlmostEqual(m_c(1.279, 1, 3, alphasMZ=0.1181, loop=5),
1.45654,
delta=deltam)
def _get_running_parameters(self, scale, f, loop=3):
"""Get the running parameters (e.g. quark masses and the strong
coupling at a given scale."""
p = {}
p['alpha_s'] = qcd.alpha_s(scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
p['m_b'] = qcd.m_b(self.parameters['m_b'],
scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
p['m_c'] = qcd.m_c(self.parameters['m_c'],
scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
p['m_s'] = qcd.m_s(self.parameters['m_s'],
scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
p['m_u'] = qcd.m_s(self.parameters['m_u'],
scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
p['m_d'] = qcd.m_s(self.parameters['m_d'],
scale,
self.f,
self.parameters['alpha_s'],
loop=loop)
# running ignored for alpha_e and lepton mass
p['alpha_e'] = self.parameters['alpha_e']
p['m_e'] = self.parameters['m_e']
p['m_mu'] = self.parameters['m_mu']
p['m_tau'] = self.parameters['m_tau']
return p
def test_m_c(self):
self.assertAlmostEqual(m_c(1.2, 50, 5), 0.612466, delta=deltam)
self.assertAlmostEqual(m_c(1.2, 2, 4), 1.00652, delta=deltam)
self.assertAlmostEqual(m_c(1.2, 1, 3), 1.32125, delta=deltam)
def get_mc(par, scale, nf_out=None):
r"""Get the running $c$ quark mass at the specified scale."""
nf = nf_out or get_nf(scale)
return qcd.m_c(mcmc=par['m_c'], scale=scale, f=nf, alphasMZ=par['alpha_s'])
def get_mc(par, scale, nf_out=None):
r"""Get the running $c$ quark mass at the specified scale."""
nf = nf_out or get_nf(scale)
return qcd.m_c(mcmc=par['m_c'], scale=scale, f=nf, alphasMZ=par['alpha_s'])