Draft: add CherenkovMassHypothesis and CherenkovPID output structures

eic_data.yaml

@@ -253,7 +253,14 @@ components:
       - eic::Direction    direction     // (theta, phi) direction of track at the surface [mrad]
       - float             momentum      // magnitude of 3-momentum [GeV]
       - float             pathlength    // Pathlength from the origin to this point
- 
+
+  ## PID hypothesis from Cherenkov detectors
+  eic::CherenkovPdgHypothesis:
+    Members:
+      - int32_t           pdg               // PDG code
+      - int16_t           npe               // Overall p.e. count associated with this hypothesis for a given track
+      - float             weight            // The weight associated with this hypothesis (the higher the more probable)
+
 datatypes:
 
   ## ==========================================================================
@@ -313,6 +320,16 @@ datatypes:
       - eic::Index        tofID             // Index of the associated TOF info, if any
       - eic::Index        mcID              // Index of the associated MC particle, if any
 
+
+  eic::CherenkovParticleID:
+    Description: "Cherenkov detector PID"
+    Author: "A. Kiselev, C. Dilks"
+    Members:
+      - eic::Index        ID                // Unique entry ID
+      - eic::Index        recID             // Index of the associated ReconstructedParticle particle, if any
+    VectorMembers:
+      - eic::CherenkovPdgHypothesis options // Evaluated PDG hypotheses, typically (e/pi/K/p)
+
   ## ==========================================================================
   ## Calorimetry
   ## ==========================================================================