Enum pineappl::fk_table::FkAssumptions
source · [−]pub enum FkAssumptions {
Nf6Ind,
Nf6Sym,
Nf5Ind,
Nf5Sym,
Nf4Ind,
Nf4Sym,
Nf3Ind,
Nf3Sym,
}
Expand description
The optimization assumptions for an FkTable
, needed for FkTable::optimize
. Since FK
tables are typically stored at very small Q2 = Q0
, the PDFs f(x,Q0)
of heavy quarks are
typically set to zero at this scale or set to the same value as their anti-quark PDF. This is
used to optimize the size of FK tables.
Variants
Nf6Ind
All quark PDFs are non-zero at the FK table scale and completely independent.
Nf6Sym
Like [Nf6Ind
], but the PDFs of top and anti-top quarks are the same at FK table scale.
Nf5Ind
Like [Nf6Ind
], but the PDFs of top and anti-top quarks are zero at FK table scale.
Nf5Sym
Like [Nf5Ind
], but the PDFs of bottom and anti-bottom quarks are the same at FK table
scale.
Nf4Ind
Like [Nf5Ind
], but the PDFs of bottom and anti-bottom quarks are zero at FK table scale.
Nf4Sym
Like [Nf4Ind
], but the PDFs of charm and anti-charm quarks are the same at FK table
scale. PDF sets that make this assumption are NNPDF4.0 and NNPDF3.1 at fitting scale.
Nf3Ind
Like [Nf4Ind
], but the PDFs of charm and anti-charm quarks are zero at FK table scale.
PDF sets that make this assumption are MSHT20 and NNPDF3.0 at fitting scale.
Nf3Sym
Like [Nf3Ind
], but the PDFs of strange and anti-strange are the same at FK table scale.
A PDF set that makes this assumption is CT18 at fitting scale.
Trait Implementations
sourceimpl Clone for FkAssumptions
impl Clone for FkAssumptions
sourcefn clone(&self) -> FkAssumptions
fn clone(&self) -> FkAssumptions
1.0.0 · sourceconst fn clone_from(&mut self, source: &Self)
const fn clone_from(&mut self, source: &Self)
source
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