adding NNLO theory to CMS_TTB_DIFF_13TEV_2016 to reproduce alphas paper settings

Author: jacoterh

nnpdf_data/nnpdf_data/commondata/CMS_TTBAR_13TEV_LJ_2016_DIF/mc_top_uncertainties_dSig_dyt.yaml

@@ -0,0 +1,17 @@
+definitions:
+  mc_stat:
+    description: Monte Carlo uncertainty on the mtop variations
+    treatment: ADD
+    type: UNCORR
+bins:
+- mc_stat: 0.7695502293979289
+- mc_stat: 0.6933245020908742
+- mc_stat: 1.491860435947327
+- mc_stat: 1.1875627445357977
+- mc_stat: 0.5526357823783525
+- mc_stat: 0.4690700087719731
+- mc_stat: 0.5924460069459232
+- mc_stat: 0.5980348166605076
+- mc_stat: 0.7574187033403568
+- mc_stat: 0.5298026343295299
+- mc_stat: 0.17149788487750758

nnpdf_data/nnpdf_data/commondata/CMS_TTBAR_13TEV_LJ_2016_DIF/metadata.yaml

@@ -57,5 +57,15 @@ implemented_observables:
     legacy:
       data_uncertainties:
       - uncertainties_legacy_YT.yaml
+    mc_uncertainties:
+      data_uncertainties:
+        - uncertainties_legacy_YT.yaml
+        - mc_top_uncertainties_dSig_dyt.yaml
+      theory:
+        FK_tables:
+          - - CMS_TTBAR_13TEV_LJ_DIF_YT
+        conversion_factor: 0.2877   # as prescribed by arXiv:2108.02803, Sec. 3, ln. 7
+        operation: 'null'
+
   data_central: data_legacy_YT.yaml
   ported_from: CMS_TTB_DIFF_13TEV_2016_LJ_TRAP