update model_list.txt

model_list.txt

@@ -526,6 +526,13 @@ Content: SM Higgs boson and MET in the form of scalar dark matter
 Paper: http://arxiv.org/abs/1506.00612
 JIRA: https://its.cern.ch/jira/browse/AGENE-965
 
+DM/HiggsPortal_UFO
+Requestor: Lailin Xu, Zhiliang Chen
+Content: Pseudo-Nambu-Goldstone Dark Matter model and Scalar DM model
+Paper: https://arxiv.org/abs/1910.04170
+Source: Ennio Salvioni (private communication)
+Validation: https://its.cern.ch/jira/browse/ATLMCPROD-11551
+
 DM/Higgs_hzpzp_UFO
 Requestor: Lashkar Kashif
 Content: Light mediator models for mono-Higgs DM searches
@@ -587,13 +594,6 @@ Paper: https://arxiv.org/pdf/2107.12389.pdf
 Source: Uli Haisch (private communication)
 Webpage: https://twiki.cern.ch/twiki/bin/view/AtlasProtected/DarkMatterInfo
 
-DM/HiggsPortal_UFO
-Requestor: Lailin Xu, Zhiliang Chen
-Content: Pseudo-Nambu-Goldstone Dark Matter model and Scalar DM model
-Paper: https://arxiv.org/abs/1910.04170
-Source: Ennio Salvioni (private communication)
-Validation: https://its.cern.ch/jira/browse/ATLMCPROD-11551
-
 DM/Pseudoscalar_2HDM
 Requestor: Valerio Ippolito
 Content: NLO 2HDM including a dark-matter candidate with PS interactions