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45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013000.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_000
Comments: NNPDF4.0 N3LO alphas=0.115, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
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@jacoterh jacoterh Aug 12, 2025

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What is the meaning of the keys NfFF, ModSV, nfref (nr of flavours at the reference scale Q0?), nf0, n3lo_ad_variation, n3lo_cf_variation and use_fhmruvv? I couldn't find these at https://docs.nnpdf.science/theory/theoryparamsdefinitions.html. I can update the website if you tell me :)

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If you could update the documentation that would be great 🙈

  • NfFF basically ignored (it can be used in yadism for a FFNS computation and would specify the number of light flavours there, but in nnpdf we never do FFNS (but FONLL))
  • ModSV scale variation scheme - since we always use "scheme B" (see old MHOU paper, sec. 3.3), it should be expanded
  • nfref number of flavours at the couplings reference scale. As Qref is typically $M_Z$ it should be 5
  • nf0 number of flavours at the fitting scale. As Q0 is typically 1.65 GeV it should be 4
  • n3lo_ad_variation IHOU variation of the N3LO anomalous dimensions. Order is (gg, gq, qg, qq, nsp, nsm, nsv) Values are 0 or 1 for FHMRUVV and 0..n for in-house (n we would need to dig out somewhere)
  • n3lo_cf_variation IHOU variations of the N3LO massive DIS coefficient functions. Values are -1, 0, 1 (see here)
  • use_fhmruvv use N3LO anomalous dimensions by FHMRUVV group instead of in-house? should default to true (after decision at some PC)

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NfFF

This then should be updated in the definition of the Theory, which I see was added not only as an important one but even mandatory! (although from the comment it shouldn't be)

NfFF: int # Number of active flavors, only for FFNS or FFN0 schemes

use_fhmruvv

The decision was not propagated to the repository though:

use_fhmruvv: Optional[bool] = False

nfref, nf0

These are only needed when you actually want to do something inconsistent. imho it is better to leave them out and let the code decide automatically depending on Q and Q0.

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let the code decide automatically

which code? because I think eko does no such thing - they are mandatory there (as we made everything mandatory - one may question that decision, but it is what we have for the moment)

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  • after decision at some PC

just for future reference: I couldn't find any plainly written record of that, but it is clearly stated a Morimondo 2024 blackboard . The corresponding commit in eko is shortly after NNPDF/eko@7735fdb

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which code?

The file I linked! A bit below

def _set_defaults(self):

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@jacoterh jacoterh Aug 13, 2025

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Ok, thanks, good to know, so for the moment it doesn't hurt to specify these even though it might be redundant. I'll update the documentation! At some point of course we want to remove any redundant keys whenever the code determines these on the fly, but let's see.

PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.115
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013001.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_001
Comments: NNPDF4.0 N3LO alphas=0.116, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.116
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013002.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_002
Comments: NNPDF4.0 N3LO alphas=0.117, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.117
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013003.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_003
Comments: NNPDF4.0 N3LO alphas=0.118, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.118
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013004.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_004
Comments: NNPDF4.0 N3LO alphas=0.119, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.119
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013005.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_005
Comments: NNPDF4.0 N3LO alphas=0.120, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.12
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013006.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_006
Comments: NNPDF4.0 N3LO alphas=0.121, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.121
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
45 changes: 45 additions & 0 deletions nnpdf_data/nnpdf_data/theory_cards/40013007.yaml
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
ID: 40_013_007
Comments: NNPDF4.0 N3LO alphas=0.122, mt=172.5 GeV, FHMRUVV splittings as Oct '24, EXA evolution
CKM:
- 0.97428
- 0.2253
- 0.00347
- 0.2252
- 0.97345
- 0.041
- 0.00862
- 0.0403
- 0.999152
DAMP: 0
FNS: FONLL-E
GF: 1.1663787e-05
HQ: POLE
IC: 1
MP: 0.938
MW: 80.398
MZ: 91.1876
ModEv: EXA
ModSV:
NfFF: 4
PTO: 3
Q0: 1.65
QED: 0
Qmb: 4.92
Qmc: 1.51
Qmt: 172.5
Qref: 91.2
SIN2TW: 0.23126
TMC: 1
XIF: 1.0
XIR: 1.0
alphaqed: 0.0077553
alphas: 0.122
kbThr: 1.0
kcThr: 1.0
ktThr: 1.0
mb: 4.92
mc: 1.51
mt: 172.5
n3lo_ad_variation: [0, 0, 0, 0, 0, 0, 0]
n3lo_cf_variation: 0
use_fhmruvv: true
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