Computes neutrino-nucleon(nucleus) QELCC differential cross section. Is a concrete implementation of the XSecAlgorithmI interface. More...

#include <SmithMonizQELCCPXSec.h>

Inheritance diagram for genie::SmithMonizQELCCPXSec:

Public Member Functions
	SmithMonizQELCCPXSec ()

	SmithMonizQELCCPXSec (string config)

virtual	~SmithMonizQELCCPXSec ()

double	XSec (const Interaction *i, KinePhaseSpace_t kps) const
	Compute the cross section for the input interaction. More...

double	Integral (const Interaction *i) const

bool	ValidProcess (const Interaction *i) const
	Can this cross section algorithm handle the input process? More...

void	Configure (const Registry &config)

void	Configure (string param_set)

Public Member Functions inherited from genie::XSecAlgorithmI
virtual	~XSecAlgorithmI ()

virtual bool	ValidKinematics (const Interaction *i) const
	Is the input kinematical point a physically allowed one? More...

Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()

virtual void	FindConfig (void)

virtual const Registry &	GetConfig (void) const

Registry *	GetOwnedConfig (void)

virtual const AlgId &	Id (void) const
	Get algorithm ID. More...

virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status. More...

virtual bool	AllowReconfig (void) const

virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm. More...

virtual void	SetId (const AlgId &id)
	Set algorithm ID. More...

virtual void	SetId (string name, string config)

const Algorithm *	SubAlg (const RgKey &registry_key) const

void	AdoptConfig (void)

void	AdoptSubstructure (void)

virtual void	Print (ostream &stream) const
	Print algorithm info. More...

Private Member Functions
void	LoadConfig (void)

double	d3sQES_dQ2dvdkF_SM (const Interaction *interaction) const

double	dsQES_dQ2_SM (const Interaction *interaction) const

double	d2sQES_dQ2dv_SM (const Interaction *i) const

Private Attributes
SmithMonizUtils *	sm_utils

double	fXSecScale
	external xsec scaling factor More...

QELFormFactors	fFormFactors

const QELFormFactorsModelI *	fFormFactorsModel

const XSecIntegratorI *	fXSecIntegrator

double	fVud2
	\|Vud\|^2(square of magnitude ud-element of CKM-matrix) More...

int	fn_NT

double	fQ2

double	fv

double	fE_nu

double	fE_lep

double	fmm_ini

double	fmm_fin

double	fm_tar

double	fmm_tar

double	fk1

double	fk2

double	fk7

double	fqv

double	fqqv

double	fcosT_k

double	fF_V

double	fF_M

double	fF_A

double	fF_P

double	fFF_V

double	fFF_M

double	fFF_A

double	fW_1

double	fW_2

double	fW_3

double	fW_4

double	fW_5

Additional Inherited Members
Static Public Member Functions inherited from genie::Algorithm
static string	BuildParamVectKey (const std::string &comm_name, unsigned int i)

static string	BuildParamVectSizeKey (const std::string &comm_name)

Protected Member Functions inherited from genie::XSecAlgorithmI
	XSecAlgorithmI ()

	XSecAlgorithmI (string name)

	XSecAlgorithmI (string name, string config)

Protected Member Functions inherited from genie::Algorithm
	Algorithm ()

	Algorithm (string name)

	Algorithm (string name, string config)

void	Initialize (void)

void	DeleteConfig (void)

void	DeleteSubstructure (void)

Registry *	ExtractLocalConfig (const Registry &in) const

Registry *	ExtractLowerConfig (const Registry &in, const string &alg_key) const
	Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...

template<class T >
bool	GetParam (const RgKey &name, T &p, bool is_top_call=true) const

template<class T >
bool	GetParamDef (const RgKey &name, T &p, const T &def) const

template<class T >
int	GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
	Handle to load vectors of parameters. More...

int	GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const

int	AddTopRegistry (Registry *rp, bool owns=true)
	add registry with top priority, also update ownership More...

int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership More...

int	MergeTopRegistry (const Registry &r)

int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships. More...

Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig

bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...) More...

AlgId	fID
	algorithm name and configuration set More...

vector< Registry * >	fConfVect

vector< bool >	fOwnerships
	ownership for every registry in fConfVect More...

AlgStatus_t	fStatus
	algorithm execution status More...

AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool) More...

Detailed Description

Computes neutrino-nucleon(nucleus) QELCC differential cross section. Is a concrete implementation of the XSecAlgorithmI interface.

[1] R.A.Smith and E.J.Moniz, Nuclear Physics B43, (1972) 605-622
[2] K.S. Kuzmin, V.V. Lyubushkin, V.A.Naumov, Eur. Phys. J. C54, (2008) 517-538

Author: Igor Kakorin kakor.nosp@m.in@j.nosp@m.inr.r.nosp@m.u Joint Institute for Nuclear Research
adapted from fortran code provided by:
Konstantin Kuzmin kkuzm.nosp@m.in@t.nosp@m.heor..nosp@m.jinr.nosp@m..ru Joint Institute for Nuclear Research
Vladimir Lyubushkin Joint Institute for Nuclear Research
Vadim Naumov vnaum.nosp@m.ov@t.nosp@m.heor..nosp@m.jinr.nosp@m..ru Joint Institute for Nuclear Research
based on code of:
Costas Andreopoulos <constantinos.andreopoulos cern.ch> University of Liverpool & STFC Rutherford Appleton Laboratory

May 05, 2017

Definition at line 52 of file SmithMonizQELCCPXSec.h.

Constructor & Destructor Documentation

SmithMonizQELCCPXSec::SmithMonizQELCCPXSec ( )

Definition at line 55 of file SmithMonizQELCCPXSec.cxx.

                                            :
 XSecAlgorithmI("genie::SmithMonizQELCCPXSec")
 {
 
 }

SmithMonizQELCCPXSec::SmithMonizQELCCPXSec ( string config )

Definition at line 61 of file SmithMonizQELCCPXSec.cxx.

                                                         :
 XSecAlgorithmI("genie::SmithMonizQELCCPXSec", config)
 {
 
 }

SmithMonizQELCCPXSec::~SmithMonizQELCCPXSec ( )

virtual

Definition at line 67 of file SmithMonizQELCCPXSec.cxx.

 {
 
 }

Member Function Documentation

void SmithMonizQELCCPXSec::Configure ( const Registry & config )

virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 148 of file SmithMonizQELCCPXSec.cxx.

 {
   Algorithm::Configure(config);
   this->LoadConfig();
 }

void SmithMonizQELCCPXSec::Configure ( string config )

virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 154 of file SmithMonizQELCCPXSec.cxx.

 {
   Algorithm::Configure(config);
 
   Registry r( "SmithMonizQELCCPXSec_specific", false ) ;
   r.Set("sm_utils_algo", RgAlg("genie::SmithMonizUtils","Default") ) ;
 
   Algorithm::Configure(r) ;
 
   this->LoadConfig();
 }

double SmithMonizQELCCPXSec::d2sQES_dQ2dv_SM ( const Interaction * i ) const

private

Definition at line 240 of file SmithMonizQELCCPXSec.cxx.

 {
   Kinematics *  kinematics = interaction -> KinePtr();
   sm_utils->SetInteraction(interaction);
   const InitialState & init_state = interaction -> InitState();
   fE_nu  = init_state.ProbeE(kRfLab);
   if (fE_nu < sm_utils->E_nu_thr_SM()) return 0;
   fQ2      = kinematics->GetKV(kKVQ2);
   fv       = kinematics->GetKV(kKVv);
   Range1D_t rkF = sm_utils->kFQES_SM_lim(fQ2,fv);
 
   const Target & target = init_state.Tgt();
   PDGLibrary * pdglib = PDGLibrary::Instance();
 
   // One of the xsec terms changes sign for antineutrinos
   bool is_neutrino = pdg::IsNeutrino(init_state.ProbePdg());
   fn_NT = (is_neutrino) ? +1 : -1;
 
   int nucl_pdg_ini = target.HitNucPdg();
   double m_ini  = target.HitNucMass();
   fmm_ini = TMath::Power(m_ini,    2);
   int nucl_pdg_fin = genie::pdg::SwitchProtonNeutron(nucl_pdg_ini);
   TParticlePDG * nucl_fin = pdglib->Find( nucl_pdg_fin );
   double m_fin  = nucl_fin -> Mass();                         //  Mass of final hadron or hadron system (GeV)
   fmm_fin = TMath::Power(m_fin,    2);
   fm_tar = target.Mass();                                     //  Mass of target nucleus (GeV)
   fmm_tar = TMath::Power(fm_tar,    2);
 
   fE_lep   = fE_nu-fv;
   double m_lep = interaction->FSPrimLepton()->Mass();
   double mm_lep = m_lep*m_lep;
   if (fE_lep < m_lep) return 0.0;
   double P_lep   = TMath::Sqrt(fE_lep*fE_lep-mm_lep);
   double k6 = (fQ2+mm_lep)/(2*fE_nu);
   double cosT_lep= (fE_lep-k6)/P_lep;
   if (cosT_lep < -1.0 || cosT_lep > 1.0 ) return 0.0;
   //|\vec{q}|
   fqqv     = fv*fv+fQ2;
   fqv      = TMath::Sqrt(fqqv);
   fcosT_k  = (fv+k6)/fqv;
   if (fcosT_k < -1.0 || fcosT_k > 1.0 ) return 0.0;
 
   fk1 = fVud2*kNucleonMass2*kPi;
   fk2 = mm_lep/(2*fmm_tar);
   fk7 = P_lep*cosT_lep;
 
 
   // Calculate the QEL form factors
   fFormFactors.Calculate(interaction);
   fF_V   = fFormFactors.F1V();
   fF_M   = fFormFactors.xiF2V();
   fF_A   = fFormFactors.FA();
   fF_P   = fFormFactors.Fp();
   fFF_V  = fF_V*fF_V;
   fFF_M  = fF_M*fF_M;
   fFF_A  = fF_A*fF_A;
 
   double t = fQ2/(4*kNucleonMass2);
   fW_1     = fFF_A*(1+t)+t*(fF_V+fF_M)*(fF_V+fF_M);                   //Ref.[1], \tilde{T}_1
   fW_2     = fFF_A+fFF_V+t*fFF_M;                                     //Ref.[1], \tilde{T}_2
   fW_3     =-2*fF_A*(fF_V+fF_M);                                      //Ref.[1], \tilde{T}_8
   fW_4     =-0.5*fF_V*fF_M-fF_A*fF_P+t*fF_P*fF_P-0.25*(1-t)*fFF_M;    //Ref.[1], \tilde{T}_\alpha
   fW_5     = fFF_V+t*fFF_M+fFF_A;
 
 //  Gaussian quadratures integrate over Fermi momentum
   double R[48]= { 0.16276744849602969579e-1,0.48812985136049731112e-1,
                   0.81297495464425558994e-1,1.13695850110665920911e-1,
                   1.45973714654896941989e-1,1.78096882367618602759e-1,
                   2.10031310460567203603e-1,2.41743156163840012328e-1,
                   2.73198812591049141487e-1,3.04364944354496353024e-1,
                   3.35208522892625422616e-1,3.65696861472313635031e-1,
                   3.95797649828908603285e-1,4.25478988407300545365e-1,
                   4.54709422167743008636e-1,4.83457973920596359768e-1,
                   5.11694177154667673586e-1,5.39388108324357436227e-1,
                   5.66510418561397168404e-1,5.93032364777572080684e-1,
                   6.18925840125468570386e-1,6.44163403784967106798e-1,
                   6.68718310043916153953e-1,6.92564536642171561344e-1,
                   7.15676812348967626225e-1,7.38030643744400132851e-1,
                   7.59602341176647498703e-1,7.80369043867433217604e-1,
                   8.00308744139140817229e-1,8.19400310737931675539e-1,
                   8.37623511228187121494e-1,8.54959033434601455463e-1,
                   8.71388505909296502874e-1,8.86894517402420416057e-1,
                   9.01460635315852341319e-1,9.15071423120898074206e-1,
                   9.27712456722308690965e-1,9.39370339752755216932e-1,
                   9.50032717784437635756e-1,9.59688291448742539300e-1,
                   9.68326828463264212174e-1,9.75939174585136466453e-1,
                   9.82517263563014677447e-1,9.88054126329623799481e-1,
                   9.92543900323762624572e-1,9.95981842987209290650e-1,
                   9.98364375863181677724e-1,9.99689503883230766828e-1};
 
   double W[48]= { 0.00796792065552012429e-1,0.01853960788946921732e-1,
                   0.02910731817934946408e-1,0.03964554338444686674e-1,
                   0.05014202742927517693e-1,0.06058545504235961683e-1,
                   0.07096470791153865269e-1,0.08126876925698759217e-1,
                   0.09148671230783386633e-1,0.10160770535008415758e-1,
                   0.11162102099838498591e-1,0.12151604671088319635e-1,
                   0.13128229566961572637e-1,0.14090941772314860916e-1,
                   0.15038721026994938006e-1,0.15970562902562291381e-1,
                   0.16885479864245172450e-1,0.17782502316045260838e-1,
                   0.18660679627411467395e-1,0.19519081140145022410e-1,
                   0.20356797154333324595e-1,0.21172939892191298988e-1,
                   0.21966644438744349195e-1,0.22737069658329374001e-1,
                   0.23483399085926219842e-1,0.24204841792364691282e-1,
                   0.24900633222483610288e-1,0.25570036005349361499e-1,
                   0.26212340735672413913e-1,0.26826866725591762198e-1,
                   0.27412962726029242823e-1,0.27970007616848334440e-1,
                   0.28497411065085385646e-1,0.28994614150555236543e-1,
                   0.29461089958167905970e-1,0.29896344136328385984e-1,
                   0.30299915420827593794e-1,0.30671376123669149014e-1,
                   0.31010332586313837423e-1,0.31316425596861355813e-1,
                   0.31589330770727168558e-1,0.31828758894411006535e-1,
                   0.32034456231992663218e-1,0.32206204794030250669e-1,
                   0.32343822568575928429e-1,0.32447163714064269364e-1,
                   0.32516118713868835987e-1,0.32550614492363166242e-1};
 
   double Sum = 0;
   for(int i = 0;i<48;i++)
   {
     double kF = 0.5*(-R[i]*(rkF.max-rkF.min)+rkF.min+rkF.max);
     kinematics->SetKV(kKVPn, kF);
     Sum+=d3sQES_dQ2dvdkF_SM(interaction)*W[47-i];
     kF = 0.5*(R[i]*(rkF.max-rkF.min)+rkF.min+rkF.max);
     kinematics->SetKV(kKVPn, kF);
     Sum+=d3sQES_dQ2dvdkF_SM(interaction)*W[47-i];
   }
 
   double xsec = 0.5*Sum*(rkF.max-rkF.min);
 
   int nucpdgc = target.HitNucPdg();
   int NNucl = (pdg::IsProton(nucpdgc)) ? target.Z() : target.N();
 
   xsec *= NNucl; // nuclear xsec
 
   // Apply given scaling factor
   xsec *= fXSecScale;
 
   return xsec;
 
 }

double SmithMonizQELCCPXSec::d3sQES_dQ2dvdkF_SM ( const Interaction * interaction ) const

private

Definition at line 193 of file SmithMonizQELCCPXSec.cxx.

 {
   // Get kinematics & init-state parameters
   const Kinematics &   kinematics = interaction -> Kine();
 
   double kF      = kinematics.GetKV(kKVPn);
   double kkF     = kF*kF;
   double P_Fermi, E_nuBIN;
 
   E_nuBIN = sm_utils->GetBindingEnergy();
 
   double E_p     = TMath::Sqrt(fmm_ini+kkF)-E_nuBIN;
   double cosT_p  = ((fv-E_nuBIN)*(2*E_p+fv+E_nuBIN)-fqqv+fmm_ini-fmm_fin)/(2*kF*fqv);           //\cos\theta_p
   if (cosT_p < -1.0 || cosT_p > 1.0 ) return 0.0;
   double pF      = TMath::Sqrt(kkF+(2*kF*fqv)*cosT_p+fqqv);
   double b2_flux = (E_p-kF*fcosT_k*cosT_p)*(E_p-kF*fcosT_k*cosT_p);
   double c2_flux = kkF*(1-cosT_p*cosT_p)*(1-fcosT_k*fcosT_k);
 
   P_Fermi        = sm_utils->GetFermiMomentum();
   double FV_SM   = 4.0*TMath::Pi()/3*TMath::Power(P_Fermi, 3);
   double factor  = fk1*(fm_tar*kF/(FV_SM*fqv*TMath::Sqrt(b2_flux-c2_flux)))*SmithMonizUtils::rho(P_Fermi, 0.0, kF)*(1-SmithMonizUtils::rho(P_Fermi, 0.01, pF));
 
   double a2      = kkF/kNucleonMass2;
   double a3      = a2*cosT_p*cosT_p;
   double a6      = kF*cosT_p/kNucleonMass;
   double a7      = E_p/kNucleonMass;
   double a4      = a7*a7;
   double a5      = 2*a7*a6;
 
   double k3      = fv/fqv;
   double k4      = (3*a3-a2)/fqqv;
   double k5      = (a7-a6*k3)*fm_tar/kNucleonMass;
 
   double T_1     = 1.0*fW_1+(a2-a3)*0.5*fW_2;                              //Ref.[1], W_1
   double T_2     = ((a2-a3)*fQ2/(2*fqqv)+a4-k3*(a5-k3*a3))*fW_2;           //Ref.[1], W_2
   double T_3     = k5*fW_3;                                                //Ref.[1], W_8
   double T_4     = fmm_tar*(0.5*fW_2*k4+1.0*fW_4/kNucleonMass2+a6*fW_5/(kNucleonMass*fqv));    //Ref.[1], W_\alpha
   double T_5     = k5*fW_5+fm_tar*(a5/fqv-fv*k4)*fW_2;
 
   double xsec    = kGF2*factor*((fE_lep-fk7)*(T_1+fk2*T_4)/fm_tar+(fE_lep+fk7)*T_2/(2*fm_tar)
                    +fn_NT*T_3*((fE_nu+fE_lep)*(fE_lep-fk7)/(2*fmm_tar)-fk2)-fk2*T_5)
                    *(kMw2/(kMw2+fQ2))*(kMw2/(kMw2+fQ2))/fE_nu/kPi;
   return xsec;
 
 
 }

double SmithMonizQELCCPXSec::dsQES_dQ2_SM ( const Interaction * interaction ) const

private

Definition at line 380 of file SmithMonizQELCCPXSec.cxx.

 {
   // Get kinematics & init-state parameters
   const Kinematics &   kinematics = interaction -> Kine();
   const InitialState & init_state = interaction -> InitState();
   const Target & target = init_state.Tgt();
 
   double E  = init_state.ProbeE(kRfHitNucRest);
   double E2 = TMath::Power(E,2);
   double ml = interaction->FSPrimLepton()->Mass();
   double M  = target.HitNucMass();
   double q2 = kinematics.q2();
 
   // One of the xsec terms changes sign for antineutrinos
   bool is_neutrino = pdg::IsNeutrino(init_state.ProbePdg());
   int sign = (is_neutrino) ? -1 : 1;
 
   // Calculate the QEL form factors
   fFormFactors.Calculate(interaction);
 
   double F1V   = fFormFactors.F1V();
   double xiF2V = fFormFactors.xiF2V();
   double FA    = fFormFactors.FA();
   double Fp    = fFormFactors.Fp();
 
 
   // Calculate auxiliary parameters
   double ml2     = TMath::Power(ml,    2);
   double M2      = TMath::Power(M,     2);
   double M4      = TMath::Power(M2,    2);
   double FA2     = TMath::Power(FA,    2);
   double Fp2     = TMath::Power(Fp,    2);
   double F1V2    = TMath::Power(F1V,   2);
   double xiF2V2  = TMath::Power(xiF2V, 2);
   double Gfactor = M2*kGF2*fVud2*(kMw2/(kMw2-q2))*(kMw2/(kMw2-q2)) / (8*kPi*E2);
   double s_u     = 4*E*M + q2 - ml2;
   double q2_M2   = q2/M2;
 
   // Compute free nucleon differential cross section
   double A = (0.25*(ml2-q2)/M2) * (
          (4-q2_M2)*FA2 - (4+q2_M2)*F1V2 - q2_M2*xiF2V2*(1+0.25*q2_M2)
               -4*q2_M2*F1V*xiF2V - (ml2/M2)*(
                (F1V2+xiF2V2+2*F1V*xiF2V)+(FA2+4*Fp2+4*FA*Fp)+(q2_M2-4)*Fp2));
   double B = -1 * q2_M2 * FA*(F1V+xiF2V);
   double C = 0.25*(FA2 + F1V2 - 0.25*q2_M2*xiF2V2);
 
   double xsec = Gfactor * (A + sign*B*s_u/M2 + C*s_u*s_u/M4);
 
   // Apply given scaling factor
   xsec *= fXSecScale;
 
   // Deuterium and tritium is a special case
   if (target.A()>1 && target.A()<4)
   {
     double Q2 = -q2;
     double fQES_Pauli = 1.0-0.529*TMath::Exp((Q2*(228.0-531.0*Q2)-48.0)*Q2);
     xsec *= fQES_Pauli;
   }
 
   int nucpdgc = target.HitNucPdg();
   int NNucl = (pdg::IsProton(nucpdgc)) ? target.Z() : target.N();
 
   xsec *= NNucl; // nuclear xsec
 
   // Apply radiative correction to the cross section for IBD processes
   // Refs:
   // 1) I.S. Towner, Phys. Rev. C 58 (1998) 1288;
   // 2) J.F. Beacom, S.J. Parke, Phys. Rev. D 64 (2001) 091302;
   // 3) A. Kurylov, M.J. Ramsey-Musolf, P. Vogel, Phys. Rev. C 65 (2002) 055501;
   // 4) A. Kurylov, M.J. Ramsey-Musolf, P. Vogel, Phys. Rev. C 67 (2003) 035502.
   double rc = 1.0;
   if ( (target.IsProton() && pdg::IsAntiNuE(init_state.ProbePdg())) || (target.IsNeutron() && pdg::IsNuE(init_state.ProbePdg()) ))
   {
     const double mp  = kProtonMass;
     const double mp2 = kProtonMass2;
     const double mn2 = kNeutronMass2;
     const double Ee  = E + ( (q2 - mn2 + mp2) / 2.0 / mp );
     assert(Ee > 0.0); // must be non-zero and positive
     rc  = 6.0 + (1.5 * TMath::Log(kProtonMass / 2.0 / Ee));
     rc += 1.2 * TMath::Power((kElectronMass / Ee), 1.5);
     rc *= kAem / kPi;
     rc += 1.0;
   }
 
   xsec *= rc;
   return xsec;
 }

double SmithMonizQELCCPXSec::Integral ( const Interaction * i ) const

virtual

Integrate the model over the kinematic phase space available to the input interaction (kinematical cuts can be included)

Implements genie::XSecAlgorithmI.

Definition at line 119 of file SmithMonizQELCCPXSec.cxx.

 {
   return fXSecIntegrator->Integrate(this,in);
 
 }

void SmithMonizQELCCPXSec::LoadConfig ( void )

private

Definition at line 166 of file SmithMonizQELCCPXSec.cxx.

 {
 
   // Cross section scaling factor
   GetParamDef( "QEL-CC-XSecScale", fXSecScale, 1. ) ;
 
   double Vud;
   GetParam( "CKM-Vud", Vud ) ;
   fVud2 = TMath::Power( Vud, 2 );
 
    // load QEL form factors model
   fFormFactorsModel = dynamic_cast<const QELFormFactorsModelI *> (
                                              this->SubAlg("FormFactorsAlg"));
   assert(fFormFactorsModel);
   fFormFactors.SetModel(fFormFactorsModel); // <-- attach algorithm
 
    // load XSec Integrators
   fXSecIntegrator =
       dynamic_cast<const XSecIntegratorI *> (this->SubAlg("XSec-Integrator"));
   assert(fXSecIntegrator);
 
   sm_utils = const_cast<genie::SmithMonizUtils *>(
                dynamic_cast<const genie::SmithMonizUtils *>(
                  this -> SubAlg( "sm_utils_algo" ) ) ) ;
 
 }

bool SmithMonizQELCCPXSec::ValidProcess ( const Interaction * i ) const

virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 125 of file SmithMonizQELCCPXSec.cxx.

 {
   if(interaction->TestBit(kISkipProcessChk)) return true;
 
   const InitialState & init_state = interaction->InitState();
   const ProcessInfo &  proc_info  = interaction->ProcInfo();
 
   if(!proc_info.IsQuasiElastic()) return false;
 
   int  nuc = init_state.Tgt().HitNucPdg();
   int  nu  = init_state.ProbePdg();
 
   bool isP   = pdg::IsProton(nuc);
   bool isN   = pdg::IsNeutron(nuc);
   bool isnu  = pdg::IsNeutrino(nu);
   bool isnub = pdg::IsAntiNeutrino(nu);
 
   bool prcok = proc_info.IsWeakCC() && ((isP&&isnub) || (isN&&isnu));
   if(!prcok) return false;
 
   return true;
 }

double SmithMonizQELCCPXSec::XSec	(	const Interaction *	i,
		KinePhaseSpace_t	k
	)		const

virtual

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 72 of file SmithMonizQELCCPXSec.cxx.

 {
   double xsec;
   // dimension of kine phase space
   std::string s = KinePhaseSpace::AsString(kps);
   int kpsdim = 1 + std::count(s.begin(), s.end(), ',');
   
   if(!this -> ValidProcess (interaction) )
   {
     LOG("SmithMoniz",pWARN) << "not a valid process";
     return 0.;
   }
 
   if(kpsdim == 1)
   {
      if(! this -> ValidKinematics (interaction) )
      {
         LOG("SmithMoniz",pWARN) << "not valid kinematics";
         return 0.;
      }
      xsec = this->dsQES_dQ2_SM(interaction);
   }
 
   if(kpsdim == 2) 
   {
     xsec = this->d2sQES_dQ2dv_SM(interaction);
   }
   
 
   
   // The algorithm computes d^1xsec/dQ2 or d^2xsec/dQ2dv
   // Check whether variable tranformation is needed
   if ( kps != kPSQ2fE && kps != kPSQ2vfE ) 
   {
      double J = 1.;
      if (kpsdim == 1)
        J = utils::kinematics::Jacobian(interaction, kPSQ2fE, kps);
      else if (kpsdim == 2)
        J = utils::kinematics::Jacobian(interaction, kPSQ2vfE, kps);
      xsec *= J;
   }
 
   return xsec;
 
 }

Member Data Documentation

double genie::SmithMonizQELCCPXSec::fcosT_k

mutableprivate

Definition at line 96 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fE_lep

mutableprivate

Definition at line 86 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fE_nu

mutableprivate

Definition at line 85 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fF_A

mutableprivate

Definition at line 99 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fF_M

mutableprivate

Definition at line 98 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fF_P

mutableprivate

Definition at line 100 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fF_V

mutableprivate

Definition at line 97 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fFF_A

mutableprivate

Definition at line 103 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fFF_M

mutableprivate

Definition at line 102 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fFF_V

mutableprivate

Definition at line 101 of file SmithMonizQELCCPXSec.h.

QELFormFactors genie::SmithMonizQELCCPXSec::fFormFactors

mutableprivate

Definition at line 78 of file SmithMonizQELCCPXSec.h.

const QELFormFactorsModelI* genie::SmithMonizQELCCPXSec::fFormFactorsModel

private

Definition at line 79 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fk1

mutableprivate

Definition at line 91 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fk2

mutableprivate

Definition at line 92 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fk7

mutableprivate

Definition at line 93 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fm_tar

mutableprivate

Definition at line 89 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fmm_fin

mutableprivate

Definition at line 88 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fmm_ini

mutableprivate

Definition at line 87 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fmm_tar

mutableprivate

Definition at line 90 of file SmithMonizQELCCPXSec.h.

int genie::SmithMonizQELCCPXSec::fn_NT

mutableprivate

Definition at line 82 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fQ2

mutableprivate

Definition at line 83 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fqqv

mutableprivate

Definition at line 95 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fqv

mutableprivate

Definition at line 94 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fv

mutableprivate

Definition at line 84 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fVud2

private

|Vud|^2(square of magnitude ud-element of CKM-matrix)

Definition at line 81 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fW_1

mutableprivate

Definition at line 104 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fW_2

mutableprivate

Definition at line 105 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fW_3

mutableprivate

Definition at line 106 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fW_4

mutableprivate

Definition at line 107 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fW_5

mutableprivate

Definition at line 108 of file SmithMonizQELCCPXSec.h.

const XSecIntegratorI* genie::SmithMonizQELCCPXSec::fXSecIntegrator

private

Definition at line 80 of file SmithMonizQELCCPXSec.h.

double genie::SmithMonizQELCCPXSec::fXSecScale

private

external xsec scaling factor

Definition at line 77 of file SmithMonizQELCCPXSec.h.

SmithMonizUtils* genie::SmithMonizQELCCPXSec::sm_utils

mutableprivate

Definition at line 70 of file SmithMonizQELCCPXSec.h.

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

Generator/src/Physics/QuasiElastic/XSection/SmithMonizQELCCPXSec.h
Generator/src/Physics/QuasiElastic/XSection/SmithMonizQELCCPXSec.cxx

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation