ParticleF

java.lang.Object
- hephysics.jet.ParticleF

All Implemented Interfaces:

Serializable, Comparable<ParticleF>
```
public class ParticleF
extends Object
implements Comparable<ParticleF>, Serializable
```
A class representing a jet or particle with pre-computed et, et2, phi, eta (float values). It uses floats to speedup calculations for jet fundings. The class is used by light-weight hephysics.jets.KTjet algorithm. "F" means float calculations The class has a minimum dynamic computation to minimize CPU. Use LParticle for (slower) dynamic calculations. To use double precision calculations, use hephysics.jets.ParticleD class.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description
`ParticleF()` Initialize pseudoparticle.
`ParticleF(float px, float py, float pz, float energy)` Initialize fast particle from 4-momenta.
`ParticleF(LParticle p)` Initialize pseudoparticle.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(ParticleF a)` Add to this particle and recalculate all characteristics.
`int`	`compareTo(ParticleF o)` Comparator.
`void`	`doc()` Show online documentation.
`float`	`eta()` Same as getEta().
`float`	`getEt()`
`float`	`getEt2()`
`float`	`getEta()`
`LParticle`	`getLParticle()`
`float`	`getPhi()`
`int`	`hashCode()` Get a hash code
`float`	`perp()` Same as getEt().
`void`	`setEt2(float et2)`
`void`	`setEta(float eta)`
`void`	`setPhi(float phi)`
`void`	`setPxPyPzE(float px, float py, float pz, float energy)` Initialize from 4-momenta.
`String`	`toString()` Convert a particle to a string.

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

- Constructor Detail
  - ParticleF
```
public ParticleF(LParticle p)
```
    Initialize pseudoparticle.
    
    Parameters:
    
    p - initialisation particle.
  - ParticleF
```
public ParticleF()
```
    Initialize pseudoparticle.
  - ParticleF
```
public ParticleF(float px,
                 float py,
                 float pz,
                 float energy)
```
    Initialize fast particle from 4-momenta. The methods precomputes internal variables et, et, phi, eta.
    
    Parameters:
    
    px -
    
    py -
    
    pz -
    
    energy -
- Method Detail
  - setPxPyPzE
```
public void setPxPyPzE(float px,
                       float py,
                       float pz,
                       float energy)
```
    Initialize from 4-momenta. Recompute et2, et, eta, and phi.
    
    Parameters:
    
    px -
    
    py -
    
    pz -
    
    energy -
  - getEta
```
public float getEta()
```
  - getPhi
```
public float getPhi()
```
  - getEt2
```
public float getEt2()
```
  - getEt
```
public float getEt()
```
  - perp
```
public float perp()
```
    Same as getEt(). Returns perp without calculations.
  - eta
```
public float eta()
```
    Same as getEta(). Returns pseudo-rapidity without calculations.
  - setEta
```
public void setEta(float eta)
```
  - setEt2
```
public void setEt2(float et2)
```
  - setPhi
```
public void setPhi(float phi)
```
  - getLParticle
```
public LParticle getLParticle()
```
  - compareTo
```
public int compareTo(ParticleF o)
```
    Comparator. using perp2 for comparison (in increasing order)
    
    Specified by:
    
    compareTo in interface Comparable<ParticleF>
    
    Parameters:
    
    o -
    
    Returns:
  - doc
```
public void doc()
```
    Show online documentation.
  - toString
```
public String toString()
```
    Convert a particle to a string.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string with the particle
  - add
```
public void add(ParticleF a)
```
    Add to this particle and recalculate all characteristics.
    
    Parameters:
    
    a -
  - hashCode
```
public int hashCode()
```
    Get a hash code
    
    Overrides:
    
    hashCode in class Object

Class ParticleF

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ParticleF

ParticleF

ParticleF

Method Detail

setPxPyPzE

getEta

getPhi

getEt2

getEt

perp

eta

setEta

setEt2

setPhi

getLParticle

compareTo

doc

toString

add

hashCode