Pith Number

pith:4RSR3UHA

pith:2026:4RSR3UHA55DTQ5FMEWHDBW3PFJ

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A Monte Carlo positronium decay source model with multiple annihilation channels in GATE

Aur\'elien Coussat, Beatrix C. Hiesmayr, Kamil Dulski, Konrad Klimaszewski, Lech Raczy\'nski, Mateusz Bala, Micha{\l} Obara, Roman Y. Shopa, Wojciech Krzemien, Wojciech Zdeb

A modular multi-channel positronium decay model has been implemented in GATE for Monte Carlo simulations.

arxiv:2605.14987 v1 · 2026-05-14 · physics.med-ph · physics.comp-ph

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\pithnumber{4RSR3UHA55DTQ5FMEWHDBW3PFJ}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

This work provides the first general-purpose, multi-channel positronium decay model integrated into GATE, enabling realistic simulations of positronium behaviour in complex media.

C2weakest assumption

The model assumes that decay channels are independent and that standard Monte Carlo sampling of exponential lifetimes and photon kinematics is sufficient without additional medium-dependent effects or correlations beyond the user-specified parameters.

C3one line summary

A general-purpose multi-channel positronium decay source model is implemented and benchmarked in GATE 9.4 and 10 for accurate Monte Carlo simulation of annihilation lifetimes and photon kinematics.

References

30 extracted · 30 resolved · 0 Pith anchors

[1] Adkins, G. S., Fell, R. N., and Sapirstein, J. (2002). Two-loop correction to the orthopositronium decay rate.Annals of Physics, 295(2):136–193 2002

[2] Adkins, G. S., McGovern, N. M., Fell, R. N., and Sapirstein, J. (2003). Two-loop corrections to the decay rate of parapositronium.Phys. Rev. A, 68:032512 2003

[3] M., Yamashita, T., Yarba, J., and Yoshida, H 2016

[4] Dulski, K. (2020). Pals avalanche — a new pal spectra analysis software.Acta Phys. Pol. A, 137(2):167–170 2020

[5] Y., Silarski, M., Skurzok, M andWiślicki, W., Zgardzińska, B., and P, M 2018

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-17T23:38:55.052328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4651dd0e0ef473874ac258e30db6f2a5f6b7b52be3f775e00a1c8fa7e56ad1c

Aliases

arxiv: 2605.14987 · arxiv_version: 2605.14987v1 · doi: 10.48550/arxiv.2605.14987 · pith_short_12: 4RSR3UHA55DT · pith_short_16: 4RSR3UHA55DTQ5FM · pith_short_8: 4RSR3UHA

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4RSR3UHA55DTQ5FMEWHDBW3PFJ \
  | 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: e4651dd0e0ef473874ac258e30db6f2a5f6b7b52be3f775e00a1c8fa7e56ad1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0eef5c49d695a820fb3edb77f57bf8f6b7990ae88c94a7d616d557103616b1ef",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2026-05-14T15:49:19Z",
    "title_canon_sha256": "ba357689b71b6950f1da9a70838462c4b55c076cc748ec3dfba7f53854d33ab5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14987",
    "kind": "arxiv",
    "version": 1
  }
}