Pith Number

pith:LMI2CIZU

pith:2026:LMI2CIZUBITDH2O2XTXTWI2645

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A Phenomenological Study of Semileptonic $B^+$ and $B_s^0$ Decays into Axial-Vector Mesons $\big(D_1(2420),\, D_1^\prime(2430),\, D_{s1}(2460),\, \text{and } D_{s1}^\prime(2536)\big)$ within the Standard Model

Ishtiaq Ahmed, Qazi Maaz Us Salam, Rana Khan, Zohaib Aarfi

Branching ratios in semileptonic B decays to axial-vector mesons vary with the mixing angle between light angular momentum states.

arxiv:2605.12065 v2 · 2026-05-12 · hep-ph

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\pithnumber{LMI2CIZUBITDH2O2XTXTWI2645}

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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

Our results show that branching ratios and other observables are sensitive to the axial-vector mixing structure. These predictions provide useful Standard Model benchmarks for future measurements of semileptonic B(s) decays into orbitally excited mesons and may help to clarify the long standing 1/2 vs. 3/2 puzzle.

C2weakest assumption

The form factors are taken from the covariant light-front quark model without new validation for the specific axial-vector final states; the mixing angle parametrization is assumed to capture the dominant effect of the j_l = 1/2 and 3/2 components.

C3one line summary

Semileptonic B decays to mixed axial-vector mesons show branching ratios and polarization observables that vary strongly with the D1 mixing angle in the covariant light-front quark model.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-11T01:10:37.485870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b11a123340a2633e9dabcef3b235ee7462d242a41dc2bdc196f2963262301b9

Aliases

arxiv: 2605.12065 · arxiv_version: 2605.12065v2 · doi: 10.48550/arxiv.2605.12065 · pith_short_12: LMI2CIZUBITD · pith_short_16: LMI2CIZUBITDH2O2 · pith_short_8: LMI2CIZU

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LMI2CIZUBITDH2O2XTXTWI2645 \
  | 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: 5b11a123340a2633e9dabcef3b235ee7462d242a41dc2bdc196f2963262301b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f9588fc6f891131891c316c3e3fdd3e95a2606a6415b690e7134ace8e579573",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-05-12T12:51:38Z",
    "title_canon_sha256": "81ad1ee4a127d24c5e90dc8d91af11958f151c685de653837337fcfaf61a04c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12065",
    "kind": "arxiv",
    "version": 2
  }
}