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Change alpha_s evaluation point in K #156

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Merged
andreab1997 merged 2 commits into from
Nov 7, 2022
Merged

Change alpha_s evaluation point in K #156

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bd2f598
Change alpha_s evaluation point in K
felixhekhorn Oct 19, 2022
12c7729
Move as_raw position in quad_ker call
alecandido Oct 28, 2022
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17 changes: 12 additions & 5 deletions src/eko/evolution_operator/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,7 @@ def quad_ker(
areas,
as1,
as0,
as_raw,
nf,
L,
ev_op_iterations,
Expand Down Expand Up @@ -151,10 +152,12 @@ def quad_ker(
Mellin inversion point
areas : tuple
basis function configuration
a1 : float
as1 : float
target coupling value
a0 : float
as0 : float
initial coupling value
as_raw : float
coupling value at the process scale
nf : int
number of active flavors
L : float
Expand Down Expand Up @@ -199,7 +202,7 @@ def quad_ker(
# scale var expanded is applied on the kernel
if sv_mode == sv.Modes.expanded and not is_threshold:
ker = np.ascontiguousarray(
sv.expanded.singlet_variation(gamma_singlet, as1, order, nf, L)
sv.expanded.singlet_variation(gamma_singlet, as_raw, order, nf, L)
) @ np.ascontiguousarray(ker)
ker = select_singlet_element(ker, mode0, mode1)
else:
Expand All @@ -216,7 +219,9 @@ def quad_ker(
ev_op_iterations,
)
if sv_mode == sv.Modes.expanded and not is_threshold:
ker = sv.expanded.non_singlet_variation(gamma_ns, as1, order, nf, L) * ker
ker = (
sv.expanded.non_singlet_variation(gamma_ns, as_raw, order, nf, L) * ker
)

# recombine everything
return np.real(ker * integrand)
Expand Down Expand Up @@ -312,7 +317,8 @@ def a_s(self):
self.mur2_shift(self.q2_from), fact_scale=self.q2_from, nf_to=self.nf
)
a1 = sc.a_s(self.mur2_shift(self.q2_to), fact_scale=self.q2_to, nf_to=self.nf)
return (a0, a1)
a_raw = sc.a_s(self.q2_to, fact_scale=self.q2_to, nf_to=self.nf)
return (a0, a1, a_raw)

@property
def labels(self):
Expand Down Expand Up @@ -370,6 +376,7 @@ def quad_ker(self, label, logx, areas):
areas=areas,
as1=self.a_s[1],
as0=self.a_s[0],
as_raw=self.a_s[2],
nf=self.nf,
L=np.log(self.fact_to_ren),
ev_op_iterations=self.config["ev_op_iterations"],
Expand Down
8 changes: 7 additions & 1 deletion tests/eko/test_ev_operator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ def test_quad_ker(monkeypatch):
areas=np.zeros(3),
as1=1,
as0=2,
as_raw=1,
nf=3,
L=0,
ev_op_iterations=0,
Expand All @@ -59,6 +60,7 @@ def test_quad_ker(monkeypatch):
areas=np.zeros(3),
as1=1,
as0=2,
as_raw=1,
nf=3,
L=0,
ev_op_iterations=0,
Expand All @@ -78,6 +80,7 @@ def test_quad_ker(monkeypatch):
areas=np.zeros(3),
as1=1,
as0=2,
as_raw=1,
nf=3,
L=0,
ev_op_iterations=0,
Expand All @@ -99,6 +102,7 @@ def test_quad_ker(monkeypatch):
areas=np.zeros(3),
as1=1,
as0=2,
as_raw=1,
nf=3,
L=0,
ev_op_iterations=0,
Expand All @@ -120,6 +124,7 @@ def test_quad_ker(monkeypatch):
areas=np.zeros(3),
as1=1,
as0=2,
as_raw=1,
nf=3,
L=0,
ev_op_iterations=0,
Expand Down Expand Up @@ -390,7 +395,7 @@ def quad_ker_pegasus(
mode1 = 0
method = ""
logxs = np.log(int_disp.xgrid.raw)
a1 = 1
as_raw = a1 = 1
a0 = 2
nf = 3
L = 0
Expand All @@ -411,6 +416,7 @@ def quad_ker_pegasus(
bf.areas_representation,
a1,
a0,
as_raw,
nf,
L,
ev_op_iterations,
Expand Down