Pith Number

pith:AW55LXOY

pith:2026:AW55LXOYGHGLKGZFDEC33VFK7K

not attested not anchored not stored refs resolved

First investigation of $^{96}$Zr samples enriched by the gas-centrifuge method for the use in rare-decay studies

A. Lubashevskiy, A. Rakhimov, A. S. Barabash, A. Ushakov, D. Arefev, D. Filosofov, D. Karaivanov, D. Kushnarev, D. Ponomarev, D. Timofeev, E. Yakushev, K. Shakhov, M. De Jesus, N. A. Mirzayev, N. Gorshkov, N. Temerbulatova, O. Kochetov, S. Evseev, S. Rozov, S. Vasilyev, S. Zyryanov, T. Khussainov, V. Kazalov, V. Yumatov

Gas-centrifuge enrichment of zirconium-96 enables the strongest sea-level limit on its double beta decay half-life to an excited state of over 3.9 × 10^19 years.

arxiv:2605.13215 v1 · 2026-05-13 · nucl-ex

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\usepackage{pith}
\pithnumber{AW55LXOYGHGLKGZFDEC33VFK7K}

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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

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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

The most stringent limit, obtained at sea level, on the half-life of the double beta decay of ^{96}Zr to the 0^+_1 excited state (1148 keV) of ^{96}Mo has been set T_{1/2}(0ν+2ν)>3.9 × 10^{19} yr (90% C.L.).

C2weakest assumption

The background from radionuclide impurities has been fully characterized and subtracted using the HPGe measurements, allowing the stated half-life limit to be set without unaccounted systematic effects.

C3one line summary

The first 180-gram Zr-96 sample enriched to 88.28% by gas centrifugation was produced and characterized, setting the strongest sea-level limit on its double beta decay half-life to the 1148 keV excited state of Mo-96 at >3.9e19 years.

References

17 extracted · 17 resolved · 0 Pith anchors

[1] S. M. Bilenky, Neutrinos: Majorana or Dirac?,Universe6(2020) 134 2020

[2] M. Alanssari, D. Frekers, T. Eronen, L. Canete, J. Dilling, M. Haaranen, J. Hakala, M. Holl, M. Ješkovsk `y, A. Jokinenet al., Single and double beta-decay Q values among the triplet 96Zr, 96Nb, and 9 2016

[3] A. Watanabe, A. Magi, M. Koshimizu, A. Sato, Y . Fujimoto, K. Asai, Development of Zr-loaded green-emitting liquid scintillator for detection of neutrinoless double beta decay,Sens. Mater.33(2021) 225 2021

[4] Y . Fukuda, S. Moriyama, K. Hiraide, I. Ogawa, T. Gunji, R. Hayami, S. Tsukadaw, S. Kurosawa, ZI- COS—Neutrinoless double beta decay experiment using 96Zr with an organic liquid scintillator,J. Phys.: 2020

[5] Institut für Seltene Erden, Prices for stable isotopes, Available at:https://ritverc.com/en/products/ reference-and-check-sources-and-solutions/gamma-sources/point-sources(accessed 6 Oct 2025) 2025

Formal links

1 machine-checked theorem link

Cited by

1 paper in Pith

First observation of single beta decay of $^{96}$Zr

Receipt and verification

First computed	2026-05-18T03:08:48.485606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05bbd5ddd831ccb51b251905bdd4aafaba96cda3e5f2b45b722b381fc46ee0ef

Aliases

arxiv: 2605.13215 · arxiv_version: 2605.13215v1 · doi: 10.48550/arxiv.2605.13215 · pith_short_12: AW55LXOYGHGL · pith_short_16: AW55LXOYGHGLKGZF · pith_short_8: AW55LXOY

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/AW55LXOYGHGLKGZFDEC33VFK7K \
  | 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: 05bbd5ddd831ccb51b251905bdd4aafaba96cda3e5f2b45b722b381fc46ee0ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddc9cf6e70c5d94254ca0e5f7967b9767999aecdd2ba42bcc9d62e09744f3dde",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2026-05-13T09:07:14Z",
    "title_canon_sha256": "8c9955e9f63b1648181aa0b6fac2fc6c94ffc71de7cacb75ef8ff1f865f61d5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13215",
    "kind": "arxiv",
    "version": 1
  }
}