L1 ⚛ L1-481 ⊙ Testnet

Parton Distribution Functions (DGLAP)

Particle Physics · QCD phenomenology

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⬇ L1-481.md

# ⚛ L1 Principle — Parton Distribution Functions (DGLAP) **ID:** `L1-481` · **Status:** ⊙ Testnet (genesis catalog) > **🌐 Domain:** Particle Physics — *QCD phenomenology* > **🎯 Problem class:** nonlinear inverse · **🧮 Solution space:** PDF function space > **📡 Carrier:** particle · **🌫 Noise:** experimental gaussian > **⚖ Difficulty (δ):** 10 · **⛓ Block:** 41555301 --- ## 🧠 1. Introduction **Parton Distribution Functions (DGLAP)** is a **nonlinear inverse problem** whose unknown lives in **PDF function space** space, within the **QCD phenomenology** sub-domain of **Particle Physics**. Measurements consist of particle interactions in a detector via a **deep inelastic scattering** sensing mechanism. The forward operator applies, in order: applies a smooth nonlinear function element-wise; F · mellin · transform operator; O · chi2 · cross section data operator. Observations are corrupted by experimental gaussian. Existence of the recovered PDF_function_space is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 10000.0); nuclear_correction_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Experimental gaussian sets the irreducible data-fidelity floor. ## ⚙ 2. Forward Model Physical chain: **x** → Pointwise nonlinearity → F · mellin · transform → O · chi2 · cross section data → **y** (detector). ``` y = `O.chi2.cross_section_data` `F.mellin.transform` f(·) x ``` **Measurement DAG:** | Primitive | What it does | |---|---| | `N.pointwise` | Applies a smooth nonlinear function element-wise | | `F.mellin.transform` | F · mellin · transform operator | | `O.chi2.cross_section_data` | O · chi2 · cross section data operator | ## 🔬 3. Physics Fingerprint | Property | Value | |---|---| | Domain | Particle Physics | | Sub domain | QCD phenomenology | | Carrier | particle | | Problem class | nonlinear_inverse | | Solution space | PDF_function_space | | Noise model | experimental_gaussian | | Integration axis | bjorken_x | | Difficulty delta | 10 | | L dag | 5 | ## 📡 4. Measurement Model Existence of the recovered PDF_function_space is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 10000.0); nuclear_correction_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Experimental gaussian sets the irreducible data-fidelity floor. | Metric | Value | |---|---| | Metric | chi2_per_dof_global_fit | | Secondary | PDF_uncertainty_band_percent | ## 📏 5. Operating Range (Ω) **Center problem class:** `nonlinear_inverse` · **Forward operator:** `deep_inelastic_scattering` **Center point:** | Parameter | Unit | Value | |---|---|---| | Q range gev | — | 1000 | | N data points | — | 3000 | | Alpha s value | — | 0.118 | | X min bjorken | — | 1e-05 | **Allowed bounds:** | Parameter | Unit | Range | |---|---|---| | Q range gev | — | 10 – 10000 | | N data points | — | 100 – 10000 | | Alpha s value | — | 0.11 – 0.125 | | X min bjorken | — | 1e-06 – 0.01 | ## 🎯 6. Tolerance (ε) **Center tolerance:** 1.05 chi2_per_dof_global_fit | Metric | Range | |---|---| | Chi2 per dof global fit | 0.8 – 2.0 | ## ⚖ 7. Hardness Function Hardness scales as **`epsilon_fn`** on **chi2_per_dof_global_fit**, with κ = `1000000.0` and δ = `10`. ## 💾 8. Reference Dataset - **primary** · weight 1.0 · IPFS _(not pinned yet)_ ## 9. On-chain Registration - **Chain hash:** `0xaeffe6d3b9db61dc28582c8613e73539a794a3004fe5d1df599e576f6b4bf17a` - **Chain tx hash:** `0x41a04ee30d49fe320e0465af284462b14e987ba2a60d2009e6e0f883f8e766af` - **Chain block:** `41555301` --- ## File Mapping This bundle consists of: `L1-481.md`, `L1-481.json`. | File | Role | How to regenerate | |------|------|-------------------| | `L1-481.md` | Source of truth — edit this | Human or LLM | | `L1-481.json` | Structured metadata for the registry | LLM regenerates from the sections above | **Prompt for your LLM after editing this Markdown:** > Read the attached Markdown. Regenerate the sibling `.json` so every field matches. > Preserve the schema documented in the rows above. > Output each file in its own fenced code block tagged with the filename. > Output only the JSON object. _This Markdown was auto-synthesized from the catalog row for `L1-481`._ _Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._

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L2-481-001 Parton Distribution Functions (DGLAP) — Nominal + Mismatch Specs

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📋 JSON metadata

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    "title": "Parton Distribution Functions (DGLAP)"
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  "status": "testnet",
  "sub_domain": "QCD phenomenology",
  "title": "Parton Distribution Functions (DGLAP)"
}

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