Class KinematicsFactory

java.lang.Object

org.jlab.physics.process.KinematicsFactory

public class KinematicsFactory
extends Object

Author:

gavalian

Field Summary

Fields

Modifier and Type	Field	Description
static double	MP

Constructor Summary

Constructors

Constructor	Description
KinematicsFactory()

Method Summary

Modifier and Type	Method	Description
static Particle	getElectron(double E, double q2, double xb)	returns an electron for given beam energy, q2 and xb
static double	getEprime(double E, double q2, double xb)	returns E' for given energy and kinematics variables.
static double	getEpsilon(double q2, double xb)
static double	getF1_d(double del2)	returns F1 function for d quark
static double	getF1_u(double del2)	Returns F1 function for U quark
static double	getGE_n(double del2)	returns electric moment of neutron, it's always 0, unless something has changed since writing of this code.
static double	getGE_p(double del2)	returns electric moment of the proton
static double	getGM_n(double del2)	returns magnetic moment for neutron
static double	getGM_p(double del2)	returns magnetic moment of the proton
static double	getMu(double q2, double xb)	returns mu for given kinematics variables
static double	getQ2(double E, double x, double y)
static double	getTheta(double E, double q2, double xb)	returns scattered electron angle for given kinematics

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

MP

public static double MP

Constructor Details

KinematicsFactory

public KinematicsFactory()

Method Details

getMu

public static double getMu(double q2,
 double xb)

returns mu for given kinematics variables

Parameters:

q2 - transferred momentum

xb - Bjorken x

Returns:

getEprime

public static double getEprime(double E,
 double q2,
 double xb)

returns E' for given energy and kinematics variables.

Parameters:

E - initial electron energy

q2 - transferred momentum to proton

xb - Bjorken x

Returns:

getTheta

public static double getTheta(double E,
 double q2,
 double xb)

returns scattered electron angle for given kinematics

Parameters:

E - initial electron energy

q2 - transfered 4 momentum

xb - Bjorken x

Returns:

getEpsilon

public static double getEpsilon(double q2,
 double xb)

getQ2

public static double getQ2(double E,
 double x,
 double y)

getElectron

public static Particle getElectron(double E,
 double q2,
 double xb)

returns an electron for given beam energy, q2 and xb

Parameters:

E -

q2 -

xb -

Returns:

getGM_p

public static double getGM_p(double del2)

returns magnetic moment of the proton

Parameters:

del2 -

Returns:

getGM_n

public static double getGM_n(double del2)

returns magnetic moment for neutron

Parameters:

del2 -

Returns:

getGE_n

public static double getGE_n(double del2)

returns electric moment of neutron, it's always 0, unless something has changed since writing of this code.

Parameters:

del2 -

Returns:

getGE_p

public static double getGE_p(double del2)

returns electric moment of the proton

Parameters:

del2 -

Returns:

getF1_u

public static double getF1_u(double del2)

Returns F1 function for U quark

Parameters:

del2 -

Returns:

getF1_d

public static double getF1_d(double del2)

returns F1 function for d quark

Parameters:

del2 -

Returns: