--- PamCut/CommonDefs.h	2009/06/10 12:45:46	1.3
+++ PamCut/CommonDefs.h	2010/03/11 19:17:44	1.9
@@ -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.
@@ -22,19 +25,51 @@
   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 {
+  S11 = 1, ///< S11.
+  S12 = 2, ///< S12.
+  S21 = 4, ///< S21.
+  S22 = 8, ///< S22.
+  S31 = 16, ///< S31.
+  S32 = 32
+///< S32.
+};
+
 /*! @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
@@ -55,7 +90,7 @@
    * @param nCols The number of columns
    * @param elements The initialization value for the matrix elements.
    */
-  SimpleMatrix(unsigned int nRows, unsigned int nCols, T elements = T()) :
+  SimpleMatrix(unsigned int nRows = 0, unsigned int nCols = 0, T elements = T()) :
     _matrix(nRows, std::vector<T>(nCols, elements)) {
 
   }