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use beta gamma CKM scheme as default #252

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653d208
add beta parameter
peterstangl Dec 16, 2023
38f08a6
update value of beta and use beta gamma CKM scheme as default
peterstangl Jan 15, 2024
4113a57
update tests
peterstangl Feb 15, 2024
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2 changes: 1 addition & 1 deletion flavio/data/config.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,7 @@ RGE thresholds:
implementation:

# CKM matrix parametrization
CKM matrix: Tree
CKM matrix: beta gamma

# Unitarity relation in Kaon mixing (either 'ut' or 'ct')
K mixing unitarity: ut
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3 changes: 3 additions & 0 deletions flavio/data/parameters_metadata.yml
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Expand Up @@ -42,6 +42,9 @@ Vcb:
gamma:
tex: $\gamma$
description: CKM Unitarity Triangle angle $\gamma$ in radians
beta:
tex: $\beta$
description: CKM Unitarity Triangle angle $\beta$ in radians


# Quark masses
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1 change: 1 addition & 0 deletions flavio/data/parameters_uncorrelated.yml
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Expand Up @@ -42,6 +42,7 @@ Vus: 0.2248(6) # FLAG 2023 Nf=2+1+1
Vub: 3.64(16)e-3 # FLAG 2023 Nf=2+1 B->pilnu
Vcb: 41.97(48) 1e-3 # 2310.20324
gamma: 1.15(6) # HFLAV 2022 B -> DK
beta: 0.3937(81) # HFLAV 2022 all charmonium w/o LHCb + LHCb 2309.09728 psiKS Run 1&2


# Meson decay constants
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7 changes: 4 additions & 3 deletions flavio/physics/test_ckm.py
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Expand Up @@ -45,6 +45,7 @@ class TestCKM(unittest.TestCase):
par_s = dict(t12=t12,t13=t13,t23=t23,delta=delta)
par_w = dict(laC=laC,A=A,rhobar=rhobar,etabar=etabar)
par_t = dict(Vus=Vus,Vub=Vub,Vcb=Vcb,gamma=gamma)
par_b = dict(Vus=Vus,Vcb=Vcb,beta=beta,gamma=gamma)

def test_ckm_parametrizations(self):
np.testing.assert_almost_equal(self.v_t/self.v_s, np.ones((3,3)), decimal=5)
Expand Down Expand Up @@ -79,11 +80,11 @@ def test_ckm_xi(self):
xi('x','bs')

def test_ckm_angles(self):
c_gamma = get_ckmangle_gamma(self.par_t)
c_gamma = get_ckmangle_gamma(self.par_b)
# angle gamma should be equal to input
self.assertAlmostEqual(c_gamma/gamma, 1., places=3)
c_beta = get_ckmangle_beta(self.par_t)
c_alpha = get_ckmangle_alpha(self.par_t)
c_beta = get_ckmangle_beta(self.par_b)
c_alpha = get_ckmangle_alpha(self.par_b)
# some of angles should be 180°
self.assertEqual(
degrees(c_alpha) + degrees(c_beta) + degrees(c_gamma), 180.)
2 changes: 1 addition & 1 deletion flavio/test_functions.py
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Expand Up @@ -48,7 +48,7 @@ def test_exp_combo(self):
def test_get_dep_par(self):
self.assertEqual(
get_dependent_parameters_sm('BR(Bs->mumu)'),
{'DeltaGamma/Gamma_Bs', 'GF', 'Vcb', 'Vub', 'Vus', 'alpha_e', 'alpha_s', 'f_Bs', 'gamma', 'm_Bs', 'm_b', 'm_mu', 'm_s', 'tau_Bs', 'm_t'}
{'DeltaGamma/Gamma_Bs', 'GF', 'Vcb', 'beta', 'Vus', 'alpha_e', 'alpha_s', 'f_Bs', 'gamma', 'm_Bs', 'm_b', 'm_mu', 'm_s', 'tau_Bs', 'm_t'}
)
self.assertEqual(
get_dependent_parameters_sm('BR(B0->ee)'),
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