Learn R Programming

hadron (version 3.1.2)

alphas: compute alpha strong at given scale

Description

compute alpha strong (\(\alpha_s\)) at given scale \(\mu\) up to N3LO in PT in the RI' renormalisation scheme.

Usage

alphas(mu, nl = 3, lam0 = 0.25, Nc = 3, Nf = 2, use.cimpl = TRUE)

Arguments

mu

the renormalisation scale \(\mu\) in GeV

nl

order in PT, range 0 to 3

lam0

\(\Lambda_\mathrm{QCD}\) in GeV

Nc

number of colours \(N_c\), defaults to 3

Nf

number of flavours \(N_f\), default is 2

use.cimpl

Use the C implementation instead of the R implementation, which might improve speed.

Value

returns the value of alpha strong \(\alpha_s\) at scale \(\mu\)

See Also

zetazp

Examples

Run this code
# NOT RUN {
alphas(mu=2.0, nl=3)

# }

Run the code above in your browser using DataLab