JPHYSICS::JDIS Class Reference

Deep-inelastic muon-nucleon scattering. More...

#include <JDIS.hh>

Inheritance diagram for JPHYSICS::JDIS:

Classes
class	JDIS_t
	Auxiliary helper class for kinematics of deep-inelastic muon-nucleon scattering at fixed muon energy. More...

Public Member Functions
	JDIS ()
	Default constructor. More...
double	getCrossSection (const double E) const
	Get cross section. More...
double	getP (const double E, const double v) const
	Get probability of given energy fraction. More...
double	getE (const double E) const
	Get shower energy. More...
double	getThetaRMS (const double E, const double v) const
	Get RMS of scattering angle. More...
double	getV (const double E) const
	Get breakpoint. More...

Detailed Description

Deep-inelastic muon-nucleon scattering.

For cross section, see reference:
D.A. Timashkov and A.A. Petrukhin, 29th International Cosmic Ray Conference Pune (2005) 9, 89-92.

For kinematics, see reference:
A. van Ginneken, Nucl. Instr. and Meth. A251 (1986) 21.

Definition at line 31 of file JDIS.hh.

Constructor & Destructor Documentation

JPHYSICS::JDIS::JDIS ( )

inline

Default constructor.

Definition at line 36 of file JDIS.hh.

    {}

Member Function Documentation

double JPHYSICS::JDIS::getCrossSection ( const double  E ) const

inline

Get cross section.

Parameters

E	muon energy [GeV]

Returns

cross section [cm^2]

Definition at line 46 of file JDIS.hh.

    {
      const double x = log10(E*1.0e+1);

      if (E > JDIS_t::E0)
        return 0.35e-30 * pow(1.0 - JDIS_t::E0/E, 2.0) * exp(-2.10/x) * pow(10.0, 0.125*x);
      else
        return 0.0;
    }

double JPHYSICS::JDIS::getP ( const double  E, const double  v  ) const

inline

Get probability of given energy fraction.

Parameters

E	muon energy [GeV]
v	energy fraction

Returns

probability

Definition at line 64 of file JDIS.hh.

    {
      const JDIS_t dis(E);

      return dis.getP(v);
    }

double JPHYSICS::JDIS::getE ( const double  E ) const

inline

Get shower energy.

Parameters

E	muon energy [GeV]

Returns

shower energy [GeV]

Definition at line 78 of file JDIS.hh.

    {
      const JDIS_t dis(E);

      return dis.getE();
    }

double JPHYSICS::JDIS::getThetaRMS ( const double  E, const double  v  ) const

inline

Get RMS of scattering angle.

Parameters

E	muon energy [GeV]
v	energy loss fraction

Returns

angle [rad]

Definition at line 93 of file JDIS.hh.

    {
      const double u = 1.0 - v;

      if (E*v > 0.135)
        return (0.39 / (E*u)) * pow(sqrt(E)*u*v, 0.17) * (1.0 - 0.135/(E*v));
      else
        return  0.0;
    }

double JPHYSICS::JDIS::getV ( const double  E ) const

inline

Get breakpoint.

Parameters

E	muon energy [GeV]

Returns

energy fraction

Definition at line 110 of file JDIS.hh.

    {
      return JDIS_t::E1/E;
    }

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The documentation for this class was generated from the following file:

• JDIS.hh