iceCube.uhe.analysis

Class BHevapPropagationMatrixFlux

java.lang.Object

iceCube.uhe.analysis.PropagationMatrixFlux

iceCube.uhe.analysis.BHevapPropagationMatrixFlux

public class BHevapPropagationMatrixFlux
extends PropagationMatrixFlux

It calculates the detectable neutrino event intensity at the Earth Surface as I3ParticleFlux does but the calculation is made by using directly the zenith angle binned propagation matrix and the numerically calculated effective area (I3EffectiveArea.java) without relying on I3Particle MC events. This subclass read out the propagation matrix generated by PropagationMatrixBHevaporation.java in the propagation package adding the neutrino interaction channel via the micro black-hole creation. Written by S. Yoshida June 3 2009

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	considerMultiTracks Whether consider the case of double muons/taus, and a pair of mu + tau.
protected static java.lang.String[]	intMtxPathname
protected int	modelNumber
protected NeutrinoBHevaporation	nuBH
protected InteractionsMatrix	nuCCMtx
protected InteractionsMatrix	nuNCMtx
protected static java.lang.String[]	propMtxPathname

Fields inherited from class iceCube.uhe.analysis.PropagationMatrixFlux

inIceAreaList, inIceDoubletList, inIceFlavorList, matrix, nuE, nuMu, nuTau, observationTime, yieldTableExists

Constructor Summary

Constructors

Constructor and Description
BHevapPropagationMatrixFlux(int modelNumber) constroctor

Method Summary

Methods

Modifier and Type	Method and Description
void	calculateYield() Calculate the neutrino yield [cm^2 sec sr] in form of the table by reasing out the pre-stored propagation matrix data via the PropagationMatrixFactory.
protected double	getIntegralIntensityOfMuAndTau(double logNuEnergyAtSurface, java.lang.String fileName) This is a method for debugging.
protected double	getIntensityOfMuAndTau(double logInIceEnergy, int finalStateFlavor)
protected double	getIntensityOfMuAndTau(double logInIceEnergy, int finalStateFlavor, int multiplicityOfTrack) calculate the muon and tau fluxes after the propagation in the earth.
static void	main(java.lang.String[] args) a simple main function for debugging this class
protected void	setNeutrinoSurfaceEnergy(double logNuSurfaceEnergy)

Methods inherited from class iceCube.uhe.analysis.PropagationMatrixFlux

addInIceParticle, getDFDLogE, getDFDLogE, getDFDLogE, getYield, setObservationTime

Methods inherited from class java.lang.Object

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

Field Detail

nuCCMtx

protected InteractionsMatrix nuCCMtx

nuNCMtx

protected InteractionsMatrix nuNCMtx

considerMultiTracks

protected boolean considerMultiTracks

Whether consider the case of double muons/taus, and a pair of mu + tau. If false, then all the muons and taus consitiute an uncorrelated single track. This is valid when their multiplicity is lower than unity.

nuBH

protected NeutrinoBHevaporation nuBH

intMtxPathname

protected static java.lang.String[] intMtxPathname

propMtxPathname

protected static java.lang.String[] propMtxPathname

modelNumber

protected int modelNumber

Constructor Detail

BHevapPropagationMatrixFlux

public BHevapPropagationMatrixFlux(int modelNumber)
                            throws java.io.IOException

constroctor

Throws:

java.io.IOException

Method Detail

calculateYield

public void calculateYield()
                    throws java.io.IOException

Calculate the neutrino yield [cm^2 sec sr] in form of the table by reasing out the pre-stored propagation matrix data via the PropagationMatrixFactory. A primary neutrino bulk is assumed to be consist of nu_e, nu_mu, nu_tau = 1:1:1.

Overrides:

calculateYield in class PropagationMatrixFlux

Throws:

java.io.IOException

getIntensityOfMuAndTau

protected double getIntensityOfMuAndTau(double logInIceEnergy,
                            int finalStateFlavor,
                            int multiplicityOfTrack)

calculate the muon and tau fluxes after the propagation in the earth. The (uncorrelated) mu and tau intensites have been pre-calculated by the PropagationMatrix (generated by PropagationMatrixBHevaporation.java) and the calculation in this method relies on the matrix data, but it also consider the effects that muons and taus can be correlated (like "double" muons) in the BH evaporation scenario. This method, therefore, convolutes the matrix data of nu-> mu/tau with weights of the multiplicities predicted by the BH model. For simplicity, only the case of the multiplicity up to 2 (double muon, mu+tau etc) is considered. Because the average mu/tau multiplicity predicted by the model is mostly less than 1, this treatment is good enough. In order to get the results you need, you have to set the neutrino energy at the earth surface to the object members Particle nuE,nuMu,nuTau, and new NeutrinoBHevaporation nuBH. The utlity method setNeutrinoSurfaceEnergy(double logEnergy) does this job for you.

       double logInIceEnergy  : log(Energy [GeV] at the I3 depth)
                                Energy is defined as total energy of muons
                                in case of multiple leptons
       int finalStateFlavor   : 1 (mu only) 2 (tau only) 3 (a mu plus a tau) 
       int multiplicityOfTrack: 1 (single) 2 (double) 3 (adds both - default)
       

getIntensityOfMuAndTau

protected double getIntensityOfMuAndTau(double logInIceEnergy,
                            int finalStateFlavor)

setNeutrinoSurfaceEnergy

protected void setNeutrinoSurfaceEnergy(double logNuSurfaceEnergy)

getIntegralIntensityOfMuAndTau

protected double getIntegralIntensityOfMuAndTau(double logNuEnergyAtSurface,
                                    java.lang.String fileName)
                                         throws java.io.IOException

This is a method for debugging. Return integral F_mu+tau(logNuEnergyAtSurface, logE)dLogE fileName is the propagation matrix file name to be used in calculation of the in-ice mu and tau spectrum induced from neutrinos with log(E)= logNuEnergyAtSurface.

Throws:

java.io.IOException

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

a simple main function for debugging this class

Throws:

java.io.IOException