# Navas:2024 — Review of Particle Physics (PDG 2024)

**Citation.** S. Navas *et al.* (Particle Data Group), "Review of Particle
Physics", *Physical Review D* **110**, 030001 (2024).

**Access.** Open. The full review and its data tables are public at
<https://pdg.lbl.gov/>.

## What this reference supports in the treatise

Every particle mass, width, mixing angle and limit the Standard Model part
quotes. Cited by the electromagnetism, positron, Goldhaber, parity-violation,
CP-violation, Higgs-discovery, neutrino-oscillation and deep-inelastic
experiment chapters.

`../data/Navas_2024.csv` holds the masses and widths of the 23 particles
those chapters quote.

## Provenance

- **Fetched from the PDG's own machine-readable release**,
  <https://pdg.lbl.gov/2024/mcdata/mass_width_2024.mcd> ("MASSES, WIDTHS,
  AND MC ID NUMBERS FROM 2024 EDITION OF RPP", generated 31 May 2024 by the
  Berkeley Particle Data Group). `tools/bibcheck/build_pdg_codata18.py`
  reads it with the fixed-width FORTRAN `FORMAT` the file documents in its
  own header, so no value is reformatted or rounded.
- Masses and widths are in GeV, with the PDG's asymmetric uncertainties.
  A blank error is blank in the source (exact, or not quoted).

## Caveats

- **Neutrino masses are not in this file.** The PDG gives limits and
  squared-mass differences, not masses, so the oscillation chapter must take
  Δ*m*² and the mixing angles from the review's own tables — they are not in
  the CSV, and must not be invented to fill the gap.
- The gluon likewise has no mass entry.
- Quark masses are scheme- and scale-dependent (the light quarks are
  MS-bar at 2 GeV, the *c* and *b* at their own mass). Quoting one without
  its scheme is meaningless; the CSV carries the PDG's value, not the
  scheme, so check the review before using a quark mass in prose.
- These are **world averages**, not one experiment's result. A chapter
  describing a discovery must quote the discovery paper's own number and may
  cite the PDG separately for the current value.