class ROOT::Math::PtEtaPhiM4D<double>

Set internal data based on an array of 4 Scalar numbers

get internal data into an array of 4 Scalar numbers

Set internal data based on 4 Scalar numbers

get internal data into 4 Scalar numbers

 --------- Coordinates and Coordinate-like Scalar properties -------------
 4-D Cylindrical eta coordinate accessors

M() is the invariant mass;
in this coordinate system it can be negagative if set that way.

 other coordinate representation

agnitude of momentu

squared magnitude of spatial components (momentum squared)

energy squared

Energy (timelike component of momentum-energy 4-vector)

vector magnitude squared (or mass squared)
In case of negative mass (spacelike particles return negative values)

transverse spatial component squared

transverse mass squared

transverse mass - will be negative if Mt2() is negative

transverse energy squared

 a bit faster than et * et

transverse energy

 restrict the value of negative mass to avoid unphysical negative E2 values
 M2 must be less than P2 for the tachionic particles - otherwise use positive values

polar angle

 --------- Set Coordinates of this system  ---------------

set Pt value

set eta value

set phi value

set M value

set values using cartesian coordinate system

 ------ Manipulations -------------

negate the 4-vector -- Note that the mass becomes negative

Scale coordinate values by a scalar quantity a

 ============= Compatibility secition ==================
 The following make this coordinate system look enough like a CLHEP
 vector that an assignment member template can work with either

 ====== Set member functions for coordinates in other systems =======