Enhance Gen 2 MC documentation with new samples

Updated the Gen 2 MC documentation with new sections and sample definitions.

Author: maxdubnowski

sbn/sbnprod_wiki/gen2_mc.md

@@ -8,13 +8,111 @@ toc: true
 toc_title: Gen 2 MC
 ---
 
-## Monte Carlo (MC)
+<h1 align="center">Monte Carlo (MC)</h1>
 
-> *[Insert overview of Gen 2 MC samples here.]*
+---
+
+<h2>Central Value MC Samples</h2>
+
+<details>
+<summary><h3 style="display:inline">➕ BNB + Light MC</h3></summary>
+<br>
+
+<h4>Development Sample</h4>
+
+<table>
+  <thead>
+    <tr><th>Stage</th><th>Sample Definition</th></tr>
+  </thead>
+  <tbody>
+    <tr><td><strong>calibntuples</strong></td><td><em>[Insert sample definition]</em></td></tr>
+    <tr><td><strong>caf</strong></td><td><em>[Insert sample definition]</em></td></tr>
+    <tr><td><strong>flatcaf</strong></td><td><code>aurora_SBND2026A_gen2_BNBLight_DevSample_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_03_flatcaf_sbnd</code></td></tr>
+  </tbody>
+</table>
+
+<h4>Full Run 1 x5 MC Sample <em>(50% available — 10M events!)</em></h4>
+
+<table>
+  <thead>
+    <tr><th>Stage</th><th>Sample Definition</th></tr>
+  </thead>
+  <tbody>
+    <tr><td><strong>reco1</strong></td><td><code>aurora_SBND2026A_gen2_BNBLight_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_03_reco1_sbnd</code></td></tr>
+    <tr><td><strong>flatcaf</strong></td><td><code>aurora_SBND2026A_gen2_BNBLight_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_03_flatcaf_sbnd</code></td></tr>
+  </tbody>
+</table>
+
+</details>
+
+---
+
+<h2>Special MC Samples</h2>
+
+<details>
+<summary><h3 style="display:inline">➕ Ar23</h3></summary>
+<br>
+
+<table>
+  <thead>
+    <tr><th>Stage</th><th>Sample Definition</th></tr>
+  </thead>
+  <tbody>
+    <tr><td><strong>calibntuples</strong></td><td><code>mc_MCP2025C_FallProduction_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_histreco2_sbnd</code></td></tr>
+    <tr><td><strong>caf</strong></td><td><code>mc_MCP2025C_FallProduction_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_caf_sbnd</code></td></tr>
+    <tr><td><strong>flatcaf</strong></td><td><code>mc_MCP2025C_FallProduction_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_v10_14_02_flatcaf_sbnd</code></td></tr>
+  </tbody>
+</table>
+
+</details>
+
+<details>
+<summary><h3 style="display:inline">➕ BSM</h3></summary>
+<br>
+
+<blockquote>
+<strong>Note:</strong> reco1 &amp; cafs are also available for all samples listed below.<br>
+<strong>Available mass points:</strong> HNL_nupi0_m260MeV, HNL_nupi0_m215MeV, HNL_nupi0_m190MeV, HNL_nupi0_m165MeV, HNL_nupi0_m140MeV, HNL_nuee_m140MeV, HNL_nuee_m125MeV, HNL_nuee_m100MeV, HNL_nuee_m75MeV, HNL_nuee_m50MeV, HNL_nuee_m35MeV
+</blockquote>
+
+<h4>HNL_nupi0_m240MeV</h4>
+
+<table>
+  <thead>
+    <tr><th>Stage</th><th>Sample Definition</th></tr>
+  </thead>
+  <tbody>
+    <tr><td><strong>flatcaf</strong></td><td><code>aurora_SBND2026A_HNL2026_14_02_03_flat_caf_sbnd_HNL_nupi0_m240MeV</code></td></tr>
+  </tbody>
+</table>
+
+</details>
+
+<details>
+<summary><h3 style="display:inline">➕ xsec</h3></summary>
+<br>
+
+<blockquote>
+Available soon!
+</blockquote>
+
+</details>
 
 ---
 
-*[Insert all MC sample information, code versions, generator configurations, and FCLs for Gen 2 here.]*
+<h2>Systematic Variations</h2>
+
+<details>
+<summary><h3 style="display:inline">➕ Systematic Variations</h3></summary>
+<br>
+
+<blockquote>
+<strong>Usage Note:</strong> When using these samples you will need to make sure that the run, subrun, event, and a neutrino truth property are matched across the nominal sample and each systematic sample separately. This will remove any statistical fluctuations.
+</blockquote>
+
+<p>Available soon!</p>
+
+</details>
 
 ---