HEParticle

java.lang.Object
- hephysics.vec.HepLorentzVector
- - hephysics.particle.LParticle
  - - hephysics.particle.HEParticle

All Implemented Interfaces:

Serializable, Comparable<LParticle>
```
public class HEParticle
extends LParticle
implements Serializable
```
a HEP-type basic particle based on 4-Lorentz vector. It is characterized by status, particle code, and coordinate position in (X,Y,Z,time).

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description
`HEParticle(double px, double py, double pz)` Define a 3-momentum for a given particle.
`HEParticle(double px, double py, double pz, double energy)` Define a particle in momentum space.
`HEParticle(double px, double py, double pz, double energy, double mass)` Define a 4-momentum and energy particle
`HEParticle(HepLorentzVector momentum, HepLorentzVector position, double mass)` Define a particle in momentum and position
`HEParticle(String name, double mass)` Define a particle with a name and mass
`HEParticle(String name, double px, double py, double pz, double energy, double mass)` Define a Lorentz particle in momentum space.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(HEParticle another)` Add 2 particles
`void`	`boost(HEParticle parent)` Lorentz Boost
`HEParticle`	`copy()` Make an exact copy of this particle
`void`	`doc()` Show online documentation.
`int`	`getBarcode()` Get barcode
`float`	`getChargeParity()` Returns C charge conjugation parity
`float`	`getIsospin()` Get isospin
`LParticle`	`getLParticle()` Returns a light-weight particle class
`int`	`getPdgcode()` Get PDG code
`HepLorentzVector`	`getPosition()` Get position in X,Y,Z,time
`float`	`getSpaceparity()` get P space parity
`float`	`getSpin()` Get J total spin
`int`	`getStatus()` Status Monte Carlo code
`void`	`print()` Print particle
`double`	`rapidity()` Compute rapidity.
`void`	`setBarcode(int barcode)` Set barcode ID
`void`	`setChargeParity(float chargeparity)` Set C charge conjugation parity
`void`	`setIsospin(float isospin)` Set isospin
`void`	`setPdgcode(int pdgcode)` Set PDG code
`void`	`setPosition(HepLorentzVector position)` Set position of particle in X,Y,Z,time.
`void`	`setSpaceParity(float spaceparity)` Set P space parity
`void`	`setSpin(float spin)` Set J total spin
`void`	`setStatus(int status)` Set Monte Carlo status code
`String`	`toString()` Convert to string
`void`	`twoBodyDecay(HEParticle prod1, HEParticle prod2, boolean randomRotate)` Evaluates 4-vector of decay product in the rest frame of parent.

Methods inherited from class hephysics.particle.LParticle
abs, add, angle, boost, calcMass, compareTo, dividePxPyPzE, getCharge, getMass, getName, getParent, getV3, hashCode, mass, scalePxPyPzE, scaleXYZT, setCharge, setMass, setParent, setPtEtaPhiE, setPtEtaPhiM, setPxPyPz, setPxPyPzE, setThetaPhiP, setXYZT, twoBodyDecay

Methods inherited from class hephysics.vec.HepLorentzVector
add, add, angle, boost, boost, boost, centerOfMass, cosTheta, dot, e, equals, et, et2, getE, getEta, getT, invariantMass, invariantMass2, isLightlike, isSpacelike, m, m2, mag, mag2, mt, mt2, mult, neg, neg, perp, perp2, phi, pseudoRapidity, px, py, pz, restMass2, setE, setPx, setPy, setPz, setT, setV3, setV3, setX, setY, setZ, skp, sub, t, theta, v3, x, y, z

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - HEParticle
```
public HEParticle(String name,
                  double mass)
```
    Define a particle with a name and mass
    
    Parameters:
    
    name - particle name
    
    mass - mass
  - HEParticle
```
public HEParticle(double px,
                  double py,
                  double pz)
```
    Define a 3-momentum for a given particle. Energy is set to 0.
    
    Parameters:
    
    px - Px
    
    py - Py
    
    pz - Pz
  - HEParticle
```
public HEParticle(double px,
                  double py,
                  double pz,
                  double energy,
                  double mass)
```
    Define a 4-momentum and energy particle
    
    Parameters:
    
    px - Px (or X position)
    
    py - Py (or Y position)
    
    pz - Pz (or Z position)
    
    energy - energy (or time)
    
    mass - mass
  - HEParticle
```
public HEParticle(HepLorentzVector momentum,
                  HepLorentzVector position,
                  double mass)
```
    Define a particle in momentum and position
    
    Parameters:
    
    momentum - 4-momentum
    
    position - postion in X,Y,Z,time
    
    mass - mass
  - HEParticle
```
public HEParticle(double px,
                  double py,
                  double pz,
                  double energy)
```
    Define a particle in momentum space. Mass is set to 0
    
    Parameters:
    
    px - Px or X position
    
    py - Py or Y position
    
    pz - Pz or Z position
    
    energy - energy or time
  - HEParticle
```
public HEParticle(String name,
                  double px,
                  double py,
                  double pz,
                  double energy,
                  double mass)
```
    Define a Lorentz particle in momentum space.
    
    Parameters:
    
    name - Name of particle
    
    px - px (or X)
    
    py - py (or Y)
    
    pz - pz (or Z)
    
    energy - energy or time
    
    mass - mass
- Method Detail
  - setPosition
```
public void setPosition(HepLorentzVector position)
```
    Set position of particle in X,Y,Z,time.
    
    Parameters:
    
    position -
  - getPosition
```
public HepLorentzVector getPosition()
```
    Get position in X,Y,Z,time
    
    Returns:
  - rapidity
```
public double rapidity()
```
    Compute rapidity. 0.5*log( (m+z)/(m-z) );
    
    Overrides:
    
    rapidity in class HepLorentzVector
    
    Returns:
  - add
```
public void add(HEParticle another)
```
    Add 2 particles
    
    Parameters:
    
    another - particle to be added
  - setIsospin
```
public void setIsospin(float isospin)
```
    Set isospin
    
    Parameters:
    
    isospin -
  - getIsospin
```
public float getIsospin()
```
    Get isospin
    
    Returns:
  - setChargeParity
```
public void setChargeParity(float chargeparity)
```
    Set C charge conjugation parity
    
    Parameters:
    
    chargeparity - charge parity
  - getChargeParity
```
public float getChargeParity()
```
    Returns C charge conjugation parity
    
    Returns:
  - setSpin
```
public void setSpin(float spin)
```
    Set J total spin
    
    Parameters:
    
    spin -
  - getSpin
```
public float getSpin()
```
    Get J total spin
    
    Returns:
  - setPdgcode
```
public void setPdgcode(int pdgcode)
```
    Set PDG code
    
    Parameters:
    
    pdgcode -
  - getPdgcode
```
public int getPdgcode()
```
    Get PDG code
    
    Returns:
  - setSpaceParity
```
public void setSpaceParity(float spaceparity)
```
    Set P space parity
    
    Parameters:
    
    spaceparity -
  - getSpaceparity
```
public float getSpaceparity()
```
    get P space parity
    
    Returns:
  - getStatus
```
public int getStatus()
```
    Status Monte Carlo code
    
    Returns:
    
    status
  - setStatus
```
public void setStatus(int status)
```
    Set Monte Carlo status code
    
    Parameters:
    
    status -
  - getBarcode
```
public int getBarcode()
```
    Get barcode
    
    Returns:
    
    barcode
  - setBarcode
```
public void setBarcode(int barcode)
```
    Set barcode ID
    
    Parameters:
    
    barcode -
  - toString
```
public String toString()
```
    Convert to string
    
    Overrides:
    
    toString in class LParticle
  - copy
```
public HEParticle copy()
```
    Make an exact copy of this particle
    
    Overrides:
    
    copy in class LParticle
    
    Returns:
    
    new copy
  - getLParticle
```
public LParticle getLParticle()
```
    Returns a light-weight particle class
    
    Returns:
  - twoBodyDecay
```
public void twoBodyDecay(HEParticle prod1,
                         HEParticle prod2,
                         boolean randomRotate)
```
    Evaluates 4-vector of decay product in the rest frame of parent.
    
    Parameters:
    
    prod1 - first decay product
    
    prod2 - second decay product
    
    randomRotate - is Phi randomly rotated?
  - boost
```
public void boost(HEParticle parent)
```
    Lorentz Boost
    
    Parameters:
    
    parent - parent particle
  - print
```
public void print()
```
    Print particle
    
    Overrides:
    
    print in class LParticle
  - doc
```
public void doc()
```
    Show online documentation.
    
    Overrides:
    
    doc in class LParticle

Class HEParticle

Constructor Summary

Method Summary

Methods inherited from class hephysics.particle.LParticle

Methods inherited from class hephysics.vec.HepLorentzVector

Methods inherited from class java.lang.Object

Constructor Detail

HEParticle

HEParticle

HEParticle

HEParticle

HEParticle

HEParticle

Method Detail

setPosition

getPosition

rapidity

add

setIsospin

getIsospin

setChargeParity

getChargeParity

setSpin

getSpin

setPdgcode

getPdgcode

setSpaceParity

getSpaceparity

getStatus

setStatus

getBarcode

setBarcode

toString

copy

getLParticle

twoBodyDecay

boost

print

doc