Allow requirements on 2- and 3- body topo output in B2OC prefilters

• update to prefilters.py / b2oc_prefilters() to allow the possibility of filtering on the 2 or 3 body topo decisions

• prefilters.py / topo_2or3body_node() is returning the or

• added the functions make_unfiltered_topo_threebody() make_filtered_topo_threebody() and refactored the code of threebody_line in topological_b/__init__.py

this last step was mandatory in order to have a simple implementation of prefilters.py / topo_2or3body_node()

Hlt/Hlt2Conf/options/hlt2_B2OC_example.py

@@ -30,6 +30,10 @@ from Hlt2Conf.lines.b_to_open_charm import all_lines
 #from Hlt2Conf.lines.b_to_open_charm.b_to_dd import all_lines
 #from Hlt2Conf.lines.b_to_open_charm.lb_to_lc import all_lines
 
+from Hlt2Conf.lines.topological_b import threebody_line, twobody_line
+
+from Hlt2Conf.lines.b_to_open_charm.b_to_dh import BdToDsmK_DsmToHHH_BDT_line
+
 ###############################################################################
 # configure input data set (uncomment the "root:// .... " lines)
 ###############################################################################
@@ -149,7 +153,13 @@ options.conddb_tag = 'sim-20171127-vc-md100'
 
 
 def make_lines():
-    return [builder() for builder in all_lines.values()]
+    lines = [builder() for builder in all_lines.values()]
+    lines.append(twobody_line())
+    lines.append(threebody_line())
+    lines.append(
+        BdToDsmK_DsmToHHH_BDT_line(
+            name='Hlt2B2OC_BdToDsmK_DsmToHHH_GenBDTGt0d0_Line', MVACut=0.))
+    return lines
 
 
 public_tools = [stateProvider_with_simplified_geom()]