Pith Number

pith:JXHA25GE

pith:2007:JXHA25GECG7MXO2X4OUFJU7KQG

not attested not anchored not stored refs resolved

A Brief Introduction to PYTHIA 8.1

Peter Skands, Stephen Mrenna, Torbj\"orn Sj\"ostrand

PYTHIA 8.1 is a complete C++ rewrite of the event generator with new physics models for LHC studies.

arxiv:0710.3820 v1 · 2007-10-20 · hep-ph

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\pithnumber{JXHA25GECG7MXO2X4OUFJU7KQG}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

PYTHIA 8 represents a complete rewrite in C++. The current release is the first main one after this transition, and does not yet in every respect replace the old code. It does contain some new physics aspects, on the other hand, that should make it an attractive option especially for LHC physics studies.

C2weakest assumption

That the new physics aspects and C++ implementation will prove sufficiently stable, validated against data, and adopted by the community despite not yet fully replacing the Fortran version in every respect.

C3one line summary

PYTHIA 8.1 is a C++ event generator for high-energy collisions featuring updated parton-shower, multiple-interaction, and fragmentation models suited to LHC physics.

References

23 extracted · 23 resolved · 1 Pith anchors

[1] Sj¨ ostrand, Computer Physics Commun 1982

[2] Bengtsson, Computer Physics Commun 1984

[3] T. Sj¨ ostrand, P. Ed´ en, C. Friberg, L. L¨ onnblad, G. Miu , S. Mrenna and E. Norrbin, Computer Physics Commun. 135 (2001) 238 2001

[4] PYTHIA 6.4 Physics and Manual 2006 · arXiv:hep-ph/0603175

[5] L¨ onnblad, Computer Physics Commun 1999

Formal links

1 machine-checked theorem link

Cited by

75 papers in Pith

ggxy: Fast and flexible NLO QCD corrections to gluon-initiated processes

Geometric Bias and Centrality Dependence of Jet Quenching in High-Energy Nuclear Collisions

Reweighting Underlying Event and Colour Reconnection parameter variations in Sherpa

Measurement of isolated photon plus two-jet correlations in Pb+Pb and $pp$ collisions at 5.02 TeV with ATLAS

Nonflow Subtraction Beyond Two-Particle Correlations

Receipt and verification

First computed	2026-07-04T17:24:57.973776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dce0d74c411becbbb57e3a854d3ea819e8fa35d96778349fc1147f02276aa91

Aliases

arxiv: 0710.3820 · arxiv_version: 0710.3820v1 · doi: 10.48550/arxiv.0710.3820 · pith_short_12: JXHA25GECG7M · pith_short_16: JXHA25GECG7MXO2X · pith_short_8: JXHA25GE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JXHA25GECG7MXO2X4OUFJU7KQG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4dce0d74c411becbbb57e3a854d3ea819e8fa35d96778349fc1147f02276aa91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77af0db5343c7e8bdb4b5a7f8d6bb65ba0190c9f8d9e99bf44687bc5e4e5c7f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2007-10-20T06:46:11Z",
    "title_canon_sha256": "6e11ad7ed85deba073975f042c304f1b77ea1cd23839b8b02c111a416feff43b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.3820",
    "kind": "arxiv",
    "version": 1
  }
}