--- PamCut/CommonDefs.h	2009/10/27 10:26:40	1.5
+++ PamCut/CommonDefs.h	2010/07/08 14:00:24	1.10
@@ -14,6 +14,9 @@
 /*! @brief The implementations of PamCut::Check() must return this value if the event satisfy the cut*/
 const int CUTOK = -1;
 
+const float POSITIVE = 1.0; ///< Positive sign alias
+const float NEGATIVE = -1.0; ///< Negative sign alias
+
 /*! @enum DETECTORCODE
  * The values for each detector correspond to a binary code associated to that detector.
  * These can be arithmetically added to create a binary code for a set of detectors.
@@ -22,15 +25,16 @@
   TRK = 1, ///< Code for Tracker
   CALO = 2, ///< Code for Calorimeter level2
   TOF = 4, ///< Code for ToF
-  AC = 8, ///< Code for AntiCoincidence
-  TRIG = 16, ///< Code for Trigger
+  ANT = 8, ///< Code for AntiCoincidence
+  TRG = 16, ///< Code for Trigger
   ORB = 32, ///< Code for Orbital Info
-  ALL = 63, ///< Sum of all the above codes
-  CALO_L1 = 64
+  DEFAULT = 63, ///< TRK, CALO, TOF, ANT, TRG, ORB
+  ND = 64, ///< Code for Neutron Detector
+  CALO_L1 = 128
 ///< Code for Calorimeter level1
 };
 
-/*! @enum TOFLAYERS Flags to identify layers. */
+/*! @enum TOFLAYERS Flags to identify TOF layers. */
 enum TOFLAYERS {
   S11 = 1, ///< S11.
   S12 = 2, ///< S12.
@@ -41,11 +45,49 @@
 ///< S32.
 };
 
+/*! @enum TRKLAYERS Flags to identify Tracker layers. */
+enum TRKLAYERS {
+  T1X = 1, ///< T1X.
+  T2X = 2, ///< T2X.
+  T3X = 4, ///< T3X.
+  T4X = 8, ///< T4X.
+  T5X = 16, ///< T5X.
+  T6X = 32, ///< T6X.
+  TX = 63, ///< All the X layers
+  T1Y = 64, ///< T1Y.
+  T2Y = 128, ///< T2Y.
+  T3Y = 256, ///< T3Y.
+  T4Y = 512, ///< T4Y.
+  T5Y = 1024, ///< T5Y.
+  T6Y = 2048, ///< T6Y.
+  TY = 4032
+///< All the Y layers
+};
 /*! @var TOFNPADLAYER
  * The number of pads in each ToF layer. S11 corresponds to element 0, S12 to element 1 and so on.
  */
 const int TOFNPADLAYER[6] = { 8, 6, 2, 2, 3, 3 };
 
+/*! @var H_MASS
+ * Proton mass
+ */
+const float H_MASS = 0.93827203; // GeV (pdg.web.cern.ch)
+
+/*! @var HE4_MASS
+ * Helium 4 mass
+ */
+const float HE4_MASS = 3.7274; // GeV (http://hyperphysics.phy-astr.gsu.edu/Hbase/pertab/He.html)
+
+/*! @var HE3_MASS
+ * Helium 3 mass
+ */
+const float HE3_MASS = 2.8084; // GeV (http://hyperphysics.phy-astr.gsu.edu/Hbase/pertab/He.html)
+
+/*! @var E_MASS
+ * Electron mass
+ */
+const float E_MASS = 0.000510998; // GeV (from PDG)
+
 /*! @brief A simple matrix class.
  *
  *  This class defines a matrix built by STL vectors. It is basically a variable-dimension