Pith Number

pith:45HPHSDE

pith:2026:45HPHSDEMRYRRZY74AK6JPL45W

not attested not anchored not stored refs pending

Role of heavy neutral lepton in lepton number violating $B$ meson decays

Dhiren Panda, Manas Kumar Mohapatra, Rukmani Mohanta

Heavy neutral leptons mediate lepton-number violating B and B_c decays with branching ratios up to 10^{-8}.

arxiv:2604.24305 v2 · 2026-04-27 · hep-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{45HPHSDEMRYRRZY74AK6JPL45W}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

For benchmark values |U_μN|^2 = 10^{-6} and M_N = 2--3 GeV, the predicted branching ratios lie in the range O(10^{-13})--O(10^{-8}). Among the channels, B_c^- → π^+ μ^- μ^- shows the largest enhancement, while B_c^- → J/ψ π^+ μ^- μ^- is strongly suppressed.

C2weakest assumption

That heavy neutral leptons are produced on-shell and mediate the lepton-number violating processes in the listed B and B_c decay channels, with mixing parameters taken from the regions allowed by B → μN and B → τN data.

C3one line summary

Heavy neutral leptons with masses of 2-3 GeV and mixing |U_μN|^2 = 10^{-6} can produce lepton-number violating B decays with branching ratios from 10^{-13} to 10^{-8}, with the largest signals in B_c^- → π^+ μ^- μ^-.

Receipt and verification

First computed	2026-05-27T01:04:58.381741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e74ef3c864647118e71fe015e4bd7ced93910b0abaed850ac2587596d48c4090

Aliases

arxiv: 2604.24305 · arxiv_version: 2604.24305v2 · doi: 10.48550/arxiv.2604.24305 · pith_short_12: 45HPHSDEMRYR · pith_short_16: 45HPHSDEMRYRRZY7 · pith_short_8: 45HPHSDE

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/45HPHSDEMRYRRZY74AK6JPL45W \
  | 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: e74ef3c864647118e71fe015e4bd7ced93910b0abaed850ac2587596d48c4090

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c6a4725ec0958c65a30cb2c4f5a5da637925e014eda0b76fd764b6ecfb13d37",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-04-27T10:51:20Z",
    "title_canon_sha256": "ba06a02a5fc342a72ade4073a36893ba6958d54fa2ffa287fcea47c0d6cd6b4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.24305",
    "kind": "arxiv",
    "version": 2
  }
}