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genie::KovalenkoQELCharmPXSec Class Reference

Computes the QEL Charm Production Differential Cross Section using Kovalenko's duality model approach. It models the differential cross sections for:
. More...

#include <KovalenkoQELCharmPXSec.h>

Inheritance diagram for genie::KovalenkoQELCharmPXSec:
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Collaboration diagram for genie::KovalenkoQELCharmPXSec:
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Public Member Functions

 KovalenkoQELCharmPXSec ()
 KovalenkoQELCharmPXSec (string config)
virtual ~KovalenkoQELCharmPXSec ()
double XSec (const Interaction *i, KinePhaseSpace_t k) const
 Compute the cross section for the input interaction.
double Integral (const Interaction *i) const
bool ValidProcess (const Interaction *i) const
 Can this cross section algorithm handle the input process?
bool ValidKinematics (const Interaction *i) const
 Is the input kinematical point a physically allowed one?
void Configure (const Registry &config)
void Configure (string param_set)
Public Member Functions inherited from genie::XSecAlgorithmI
virtual ~XSecAlgorithmI ()
Public Member Functions inherited from genie::Algorithm
virtual ~Algorithm ()
virtual void FindConfig (void)
virtual const RegistryGetConfig (void) const
RegistryGetOwnedConfig (void)
virtual const AlgIdId (void) const
 Get algorithm ID.
virtual AlgStatus_t GetStatus (void) const
 Get algorithm status.
virtual bool AllowReconfig (void) const
virtual AlgCmp_t Compare (const Algorithm *alg) const
 Compare with input algorithm.
virtual void SetId (const AlgId &id)
 Set algorithm ID.
virtual void SetId (string name, string config)
const AlgorithmSubAlg (const RgKey &registry_key) const
void AdoptConfig (void)
void AdoptSubstructure (void)
virtual void Print (ostream &stream) const
 Print algorithm info.

Private Member Functions

void LoadConfig (void)
double ZR (const Interaction *interaction) const
double DR (const Interaction *interaction) const
double MRes (const Interaction *interaction) const
double ResDM (const Interaction *interaction) const
double xiBar (double Q2, double Mnuc, double v) const

Private Attributes

const PDFModelIfPDFModel
const XSecIntegratorIfXSecIntegrator
 const IntegratorI * fIntegrator;
double fMo
double fScLambdaP
double fScSigmaP
double fScSigmaPP
double fResDMLambda
double fResDMSigma

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)
static string BuildParamMatKey (const std::string &comm_name, unsigned int i, unsigned int j)
static string BuildParamMatRowSizeKey (const std::string &comm_name)
static string BuildParamMatColSizeKey (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)
RegistryExtractLocalConfig (const Registry &in) const
RegistryExtractLowerConfig (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.
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.
int GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const
template<class T>
int GetParamMat (const std::string &comm_name, TMatrixT< T > &mat, bool is_top_call=true) const
 Handle to load matrix of parameters.
template<class T>
int GetParamMatSym (const std::string &comm_name, TMatrixTSym< T > &mat, bool is_top_call=true) const
int GetParamMatKeys (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
int AddLowRegistry (Registry *rp, bool owns=true)
 add registry with lowest priority, also update ownership
int MergeTopRegistry (const Registry &r)
int AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
 Add registries with top priority, also udated Ownerships.
Protected Attributes inherited from genie::Algorithm
bool fAllowReconfig
bool fOwnsSubstruc
 true if it owns its substructure (sub-algs,...)
AlgId fID
 algorithm name and configuration set
vector< Registry * > fConfVect
vector< bool > fOwnerships
 ownership for every registry in fConfVect
AlgStatus_t fStatus
 algorithm execution status
AlgMapfOwnedSubAlgMp
 local pool for owned sub-algs (taken out of the factory pool)

Detailed Description

Computes the QEL Charm Production Differential Cross Section using Kovalenko's duality model approach. It models the differential cross sections for:
.

  • v + n \rightarrow mu- + Lambda_{c}^{+} (2285)
  • v + n \rightarrow mu- + Sigma_{c}^{+} (2455)
  • v + p \rightarrow mu- + Sigma_{c}^{++} (2455) Is a concrete implementation of the XSecAlgorithmI interface.
References:\n S.G.Kovalenko, Sov.J.Nucl.Phys.52:934 (1990)
     Rather than using Kovalenko's expression for the ZR scaling factor,
     I apply an ad-hoc scaling factor maintaining the relative strength
     of the QELC channels but lowering their sum to be consistent with
     recent NOMAD measurement. The default value of M0 has been changed
     from 0.1 to sqrt(0.1) as in M.Bischofberger's (ETHZ)PhD thesis
     (DISS.ETH NO 16034). For more details see GENIE-PUB/2007/006.
Author
Costas Andreopoulos <c.andreopoulos \at cern.ch> University of Liverpool
Created:\n June 10, 2004
License:\n Copyright (c) 2003-2025, The GENIE Collaboration
For the full text of the license visit http://copyright.genie-mc.org

Definition at line 48 of file KovalenkoQELCharmPXSec.h.

Constructor & Destructor Documentation

◆ KovalenkoQELCharmPXSec() [1/2]

KovalenkoQELCharmPXSec::KovalenkoQELCharmPXSec ( )

Definition at line 36 of file KovalenkoQELCharmPXSec.cxx.

36 :
37XSecAlgorithmI("genie::KovalenkoQELCharmPXSec")
38{
39
40}

References genie::XSecAlgorithmI::XSecAlgorithmI().

◆ KovalenkoQELCharmPXSec() [2/2]

KovalenkoQELCharmPXSec::KovalenkoQELCharmPXSec ( string config)

Definition at line 42 of file KovalenkoQELCharmPXSec.cxx.

42 :
43XSecAlgorithmI("genie::KovalenkoQELCharmPXSec", config)
44{
45
46}

References genie::XSecAlgorithmI::XSecAlgorithmI().

◆ ~KovalenkoQELCharmPXSec()

KovalenkoQELCharmPXSec::~KovalenkoQELCharmPXSec ( )
virtual

Definition at line 48 of file KovalenkoQELCharmPXSec.cxx.

49{
50
51}

Member Function Documentation

◆ Configure() [1/2]

void KovalenkoQELCharmPXSec::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 289 of file KovalenkoQELCharmPXSec.cxx.

290{
291 Algorithm::Configure(config);
292 this->LoadConfig();
293}
virtual void Configure(const Registry &config)
Definition Algorithm.cxx:62

References genie::Algorithm::Configure(), and LoadConfig().

◆ Configure() [2/2]

void KovalenkoQELCharmPXSec::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 295 of file KovalenkoQELCharmPXSec.cxx.

296{
297 Algorithm::Configure(param_set);
298 this->LoadConfig();
299}

References genie::Algorithm::Configure(), and LoadConfig().

◆ DR()

double KovalenkoQELCharmPXSec::DR ( const Interaction * interaction) const
private

Definition at line 141 of file KovalenkoQELCharmPXSec.cxx.

142{
143 const InitialState & init_state = interaction -> InitState();
144
145 // Compute PDFs
146 PDF pdfs;
147 pdfs.SetModel(fPDFModel); // <-- attach algorithm
148
149 // Compute integration area = [xi_bar_plus, xi_bar_minus]
150 const Kinematics & kinematics = interaction->Kine();
151
152 double Q2 = kinematics.Q2();
153 double Mnuc = init_state.Tgt().HitNucMass();
154 double Mnuc2 = TMath::Power(Mnuc,2);
155 double MR = this->MRes(interaction);
156 double DeltaR = this->ResDM(interaction);
157
158 double vR_minus = ( TMath::Power(MR-DeltaR,2) - Mnuc2 + Q2 ) / (2*Mnuc);
159 double vR_plus = ( TMath::Power(MR+DeltaR,2) - Mnuc2 + Q2 ) / (2*Mnuc);
160
161 LOG("QELCharmXSec", pDEBUG)
162 << "vR = [plus: " << vR_plus << ", minus: " << vR_minus << "]";
163
164 double xi_bar_minus = 0.999;
165 double xi_bar_plus = this->xiBar(Q2, Mnuc, vR_plus);
166
167 LOG("QELCharmXSec", pDEBUG)
168 << "Integration limits = [" << xi_bar_plus << ", " << xi_bar_minus << "]";
169
170 int pdgc = init_state.Tgt().HitNucPdg();
171
172 ROOT::Math::IBaseFunctionOneDim * integrand = new
173 utils::gsl::wrap::KovQELCharmIntegrand(&pdfs,Q2,pdgc);
174 ROOT::Math::IntegrationOneDim::Type ig_type =
176
177 double abstol = 1; // We mostly care about relative tolerance
178 double reltol = 1E-4;
179 int nmaxeval = 100000;
180 ROOT::Math::Integrator ig(*integrand,ig_type,abstol,reltol,nmaxeval);
181 double D = ig.Integral(xi_bar_plus, xi_bar_minus);
182
183 delete integrand;
184
185 return D;
186}
#define pDEBUG
Definition Messenger.h:63
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE,...
Definition Messenger.h:96
const Target & Tgt(void) const
const Kinematics & Kine(void) const
Definition Interaction.h:71
double Q2(bool selected=false) const
double xiBar(double Q2, double Mnuc, double v) const
double MRes(const Interaction *interaction) const
double ResDM(const Interaction *interaction) const
void SetModel(const PDFModelI *model)
Definition PDF.cxx:42
int HitNucPdg(void) const
Definition Target.cxx:304
double HitNucMass(void) const
Definition Target.cxx:233
ROOT::Math::IntegrationOneDim::Type Integration1DimTypeFromString(string type)
Definition GSLUtils.cxx:23
double Q2(const Interaction *const i)

References fPDFModel, genie::Target::HitNucMass(), genie::Target::HitNucPdg(), genie::utils::gsl::Integration1DimTypeFromString(), genie::Interaction::Kine(), LOG, MRes(), pDEBUG, genie::Kinematics::Q2(), ResDM(), genie::PDF::SetModel(), genie::InitialState::Tgt(), and xiBar().

Referenced by XSec().

◆ Integral()

double KovalenkoQELCharmPXSec::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 228 of file KovalenkoQELCharmPXSec.cxx.

229{
230 double xsec = fXSecIntegrator->Integrate(this,interaction);
231 return xsec;
232}
const XSecIntegratorI * fXSecIntegrator
const IntegratorI * fIntegrator;

References fXSecIntegrator.

◆ LoadConfig()

void KovalenkoQELCharmPXSec::LoadConfig ( void )
private

fIntegrator = 0;

Definition at line 301 of file KovalenkoQELCharmPXSec.cxx.

302{
303 fPDFModel = 0;
304 ///fIntegrator = 0;
305
306 // Get config values or set defaults
307 GetParamDef( "Scale-LambdaP", fScLambdaP, 0.8 * 0.0102 ) ;
308 GetParamDef( "Scale-SigmaP", fScSigmaP , 0.8 * 0.0028 ) ;
309 GetParamDef( "Scale-SigmaPP", fScSigmaPP, 0.8 * 0.0159 ) ;
310 GetParamDef( "Res-DeltaM-Lambda", fResDMLambda, 0.56 ) ; //GeV
311 GetParamDef( "Res-DeltaM-Sigma", fResDMSigma, 0.20 ) ; //GeV
312 GetParamDef( "Mo", fMo, sqrt(0.1) ); //GeV
313
314 // get PDF model and integrator
315
316 fPDFModel = dynamic_cast<const PDFModelI *>(this->SubAlg("PDF-Set"));
317 assert(fPDFModel);
318
319 // load XSec Integrator
321 dynamic_cast<const XSecIntegratorI *> (this->SubAlg("XSec-Integrator"));
322 assert(fXSecIntegrator);
323
324 // load numerical integrator for integrand in diff x-section calc.
325// fIntegrator = dynamic_cast<const IntegratorI *>(this->SubAlg("Integrator"));
326// assert(fIntegrator);
327}
bool GetParamDef(const RgKey &name, T &p, const T &def) const
const Algorithm * SubAlg(const RgKey &registry_key) const

References fMo, fPDFModel, fResDMLambda, fResDMSigma, fScLambdaP, fScSigmaP, fScSigmaPP, fXSecIntegrator, genie::Algorithm::GetParamDef(), and genie::Algorithm::SubAlg().

Referenced by Configure(), and Configure().

◆ MRes()

double KovalenkoQELCharmPXSec::MRes ( const Interaction * interaction) const
private

Definition at line 219 of file KovalenkoQELCharmPXSec.cxx.

220{
221 const XclsTag & xcls = interaction->ExclTag();
222
223 int pdgc = xcls.CharmHadronPdg();
224 double MR = PDGLibrary::Instance()->Find(pdgc)->Mass();
225 return MR;
226}
const XclsTag & ExclTag(void) const
Definition Interaction.h:72
static PDGLibrary * Instance(void)
TParticlePDG * Find(int pdgc, bool must_exist=true)
int CharmHadronPdg(void) const
Definition XclsTag.h:52

References genie::XclsTag::CharmHadronPdg(), genie::Interaction::ExclTag(), genie::PDGLibrary::Find(), and genie::PDGLibrary::Instance().

Referenced by DR(), ValidKinematics(), and XSec().

◆ ResDM()

double KovalenkoQELCharmPXSec::ResDM ( const Interaction * interaction) const
private

Definition at line 197 of file KovalenkoQELCharmPXSec.cxx.

198{
199// Resonance Delta M obeys the constraint DM(R+/-) <= |M(R+/-) - M(R)|
200// where M(R-) <= M(R) <= M(R+) are the masses of the neighboring
201// resonances R+, R-.
202// Get the values from the algorithm conf. registry, and if they do not exist
203// set them to default values (Eq.(20) in Sov.J.Nucl.Phys.52:934 (1990)
204
205 const XclsTag & xcls = interaction->ExclTag();
206
207 int pdgc = xcls.CharmHadronPdg();
208
209 bool isLambda = (pdgc == kPdgLambdaPc);
210 bool isSigma = (pdgc == kPdgSigmaPc || pdgc == kPdgSigmaPPc);
211
212 if ( isLambda ) return fResDMLambda;
213 else if ( isSigma ) return fResDMSigma;
214 else abort();
215
216 return 0;
217}
const int kPdgSigmaPPc
Definition PDGCodes.h:102
const int kPdgLambdaPc
Definition PDGCodes.h:99
const int kPdgSigmaPc
Definition PDGCodes.h:101

References genie::XclsTag::CharmHadronPdg(), genie::Interaction::ExclTag(), fResDMLambda, fResDMSigma, genie::kPdgLambdaPc, genie::kPdgSigmaPc, and genie::kPdgSigmaPPc.

Referenced by DR().

◆ ValidKinematics()

bool KovalenkoQELCharmPXSec::ValidKinematics ( const Interaction * i) const
virtual

Is the input kinematical point a physically allowed one?

Reimplemented from genie::XSecAlgorithmI.

Definition at line 267 of file KovalenkoQELCharmPXSec.cxx.

269{
270 if(interaction->TestBit(kISkipKinematicChk)) return true;
271
272 const InitialState & init_state = interaction->InitState();
273 double E = init_state.ProbeE(kRfHitNucRest);
274
275 //resonance, final state primary lepton & nucleon mass
276 double MR = this -> MRes (interaction);
277 double ml = interaction->FSPrimLepton()->Mass();
278 double Mnuc = init_state.Tgt().HitNucP4Ptr()->M();
279 double Mnuc2 = TMath::Power(Mnuc,2);
280
281 //resonance threshold
282 double ER = ( TMath::Power(MR+ml,2) - Mnuc2 ) / (2*Mnuc);
283
284 if(E <= ER) return false;
285
286 return true;
287}
double ProbeE(RefFrame_t rf) const
TLorentzVector * HitNucP4Ptr(void) const
Definition Target.cxx:247
const UInt_t kISkipKinematicChk
if set, skip kinematic validity checks
Definition Interaction.h:48
@ kRfHitNucRest
Definition RefFrame.h:30

References genie::Interaction::FSPrimLepton(), genie::Target::HitNucP4Ptr(), genie::Interaction::InitState(), genie::kISkipKinematicChk, genie::kRfHitNucRest, MRes(), genie::InitialState::ProbeE(), and genie::InitialState::Tgt().

Referenced by XSec().

◆ ValidProcess()

bool KovalenkoQELCharmPXSec::ValidProcess ( const Interaction * i) const
virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 234 of file KovalenkoQELCharmPXSec.cxx.

236{
237 // Make sure we are dealing with one of the following channels:
238 // v + n --> mu- + Lambda_{c}^{+} (2285)
239 // v + n --> mu- + Sigma_{c}^{+} (2455)
240 // v + p --> mu- + Sigma_{c}^{++} (2455)
241
242 if(interaction->TestBit(kISkipProcessChk)) return true;
243
244 const XclsTag & xcls = interaction->ExclTag();
245 const InitialState & init_state = interaction->InitState();
246 const ProcessInfo & proc_info = interaction->ProcInfo();
247
248 bool is_exclusive_charm = (xcls.IsCharmEvent() && !xcls.IsInclusiveCharm());
249 if(!is_exclusive_charm) return false;
250
251 if(!proc_info.IsQuasiElastic()) return false;
252 if(!proc_info.IsWeak()) return false;
253
254 bool isP = pdg::IsProton ( init_state.Tgt().HitNucPdg() );
255 bool isN = pdg::IsNeutron( init_state.Tgt().HitNucPdg() );
256
257 int pdgc = xcls.CharmHadronPdg();
258
259 bool can_handle = (
260 (pdgc == kPdgLambdaPc && isN) || /* v + n -> l + #Lambda_{c}^{+} */
261 (pdgc == kPdgSigmaPc && isN) || /* v + n -> l + #Sigma_{c}^{+} */
262 (pdgc == kPdgSigmaPPc && isP) /* v + p -> l + #Sigma_{c}^{++} */
263 );
264 return can_handle;
265}
bool IsQuasiElastic(void) const
bool IsWeak(void) const
bool IsInclusiveCharm(void) const
Definition XclsTag.cxx:54
bool IsCharmEvent(void) const
Definition XclsTag.h:50
bool IsProton(int pdgc)
Definition PDGUtils.cxx:336
bool IsNeutron(int pdgc)
Definition PDGUtils.cxx:341
const UInt_t kISkipProcessChk
if set, skip process validity checks
Definition Interaction.h:47

References genie::XclsTag::CharmHadronPdg(), genie::Interaction::ExclTag(), genie::Target::HitNucPdg(), genie::Interaction::InitState(), genie::XclsTag::IsCharmEvent(), genie::XclsTag::IsInclusiveCharm(), genie::pdg::IsNeutron(), genie::pdg::IsProton(), genie::ProcessInfo::IsQuasiElastic(), genie::ProcessInfo::IsWeak(), genie::kISkipProcessChk, genie::kPdgLambdaPc, genie::kPdgSigmaPc, genie::kPdgSigmaPPc, genie::Interaction::ProcInfo(), and genie::InitialState::Tgt().

Referenced by XSec().

◆ xiBar()

double KovalenkoQELCharmPXSec::xiBar ( double Q2,
double Mnuc,
double v ) const
private

Definition at line 188 of file KovalenkoQELCharmPXSec.cxx.

189{
190 double Mo2 = fMo*fMo;
191 double v2 = v *v;
192 double xi = (Q2/Mnuc) / (v + TMath::Sqrt(v2+Q2));
193 double xib = xi * ( 1 + (1 + Mo2/(Q2+Mo2))*Mo2/Q2 );
194 return xib;
195}

References fMo.

Referenced by DR(), and XSec().

◆ XSec()

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

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 53 of file KovalenkoQELCharmPXSec.cxx.

55{
56 if(! this -> ValidProcess (interaction) ) return 0.;
57 if(! this -> ValidKinematics (interaction) ) return 0.;
58
59 //----- get kinematics & init state - compute auxiliary vars
60 const Kinematics & kinematics = interaction->Kine();
61 const InitialState & init_state = interaction->InitState();
62 const Target & target = init_state.Tgt();
63
64 //neutrino energy & momentum transfer
65 double E = init_state.ProbeE(kRfHitNucRest);
66 double E2 = E * E;
67 double Q2 = kinematics.Q2();
68
69#ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
70 LOG("QELCharmXSec", pDEBUG) << "E = " << E << ", Q2 = " << Q2;
71#endif
72
73 //resonance mass & nucleon mass
74 double MR = this->MRes (interaction);
75 double MR2 = TMath::Power(MR,2);
76 double Mnuc = target.HitNucMass();
77 double Mnuc2 = TMath::Power(Mnuc,2);
78
79#ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
80 LOG("QELCharmXSec", pDEBUG) << "M(RES) = " << MR;
81#endif
82
83 //----- Calculate the differential cross section dxsec/dQ^2
84 double Gf = kGF2 / (2*kPi);
85 double vR = (MR2 - Mnuc2 + Q2) / (2*Mnuc);
86 double xiR = this->xiBar(Q2, Mnuc, vR);
87 double vR2 = vR*vR;
88 double vR_E = vR/E;
89 double Q2_4E2 = Q2/(4*E2);
90 double Q2_2MExiR = Q2/(2*Mnuc*E*xiR);
91 double Z = this->ZR(interaction);
92 double D = this->DR(interaction);
93
94#ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
95 LOG("QELCharmXSec", pDEBUG)
96 << "Z = " << Z << ", D = " << D << ". xiR = " << xiR << ", vR = " << vR;
97#endif
98
99 double xsec = Gf*Z*D * (1 - vR_E + Q2_4E2 + Q2_2MExiR) *
100 TMath::Sqrt(vR2 + Q2) / (vR*xiR);
101
102 //----- The algorithm computes dxsec/dQ2
103 // Check whether variable tranformation is needed
104 if(kps!=kPSQ2fE) {
105 double J = utils::kinematics::Jacobian(interaction,kPSQ2fE,kps);
106 xsec *= J;
107 }
108
109 //----- If requested return the free nucleon xsec even for input nuclear tgt
110 if( interaction->TestBit(kIAssumeFreeNucleon) ) return xsec;
111
112 //----- Nuclear cross section (simple scaling here)
113 int nuc = target.HitNucPdg();
114 int NNucl = (pdg::IsProton(nuc)) ? target.Z() : target.N();
115 xsec *= NNucl;
116
117#ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
118 LOG("QELCharmXSec", pINFO)
119 << "dsigma/dQ2(E=" << E << ", Q2=" << Q2 << ") = "
120 << xsec / (1E-40*units::cm2) << " x 1E-40 cm^2";
121#endif
122
123 return xsec;
124}
#define pINFO
Definition Messenger.h:62
bool ValidKinematics(const Interaction *i) const
Is the input kinematical point a physically allowed one?
double ZR(const Interaction *interaction) const
double DR(const Interaction *interaction) const
bool ValidProcess(const Interaction *i) const
Can this cross section algorithm handle the input process?
int N(void) const
Definition Target.h:69
int Z(void) const
Definition Target.h:68
static constexpr double cm2
Definition Units.h:69
double Jacobian(const Interaction *const i, KinePhaseSpace_t f, KinePhaseSpace_t t)
double J(double q0, double q3, double Enu, double ml)
Definition MECUtils.cxx:147
const UInt_t kIAssumeFreeNucleon
Definition Interaction.h:49

References genie::units::cm2, DR(), genie::Target::HitNucMass(), genie::Target::HitNucPdg(), genie::Interaction::InitState(), genie::pdg::IsProton(), genie::utils::kinematics::Jacobian(), genie::constants::kGF2, genie::kIAssumeFreeNucleon, genie::Interaction::Kine(), genie::constants::kPi, genie::kPSQ2fE, genie::kRfHitNucRest, LOG, MRes(), genie::Target::N(), pDEBUG, pINFO, genie::InitialState::ProbeE(), genie::Kinematics::Q2(), genie::InitialState::Tgt(), ValidKinematics(), ValidProcess(), xiBar(), genie::Target::Z(), and ZR().

◆ ZR()

double KovalenkoQELCharmPXSec::ZR ( const Interaction * interaction) const
private

Definition at line 126 of file KovalenkoQELCharmPXSec.cxx.

127{
128 const XclsTag & xcls = interaction->ExclTag();
129 const InitialState & init_state = interaction->InitState();
130
131 int pdgc = xcls.CharmHadronPdg();
132 bool isP = pdg::IsProton ( init_state.Tgt().HitNucPdg() );
133 bool isN = pdg::IsNeutron( init_state.Tgt().HitNucPdg() );
134
135 if ( pdgc == kPdgLambdaPc && isN ) return fScLambdaP;
136 else if ( pdgc == kPdgSigmaPc && isN ) return fScSigmaP;
137 else if ( pdgc == kPdgSigmaPPc && isP ) return fScSigmaPP;
138 else abort();
139}
const InitialState & InitState(void) const
Definition Interaction.h:69

References genie::XclsTag::CharmHadronPdg(), genie::Interaction::ExclTag(), fScLambdaP, fScSigmaP, fScSigmaPP, genie::Target::HitNucPdg(), genie::Interaction::InitState(), genie::pdg::IsNeutron(), genie::pdg::IsProton(), genie::kPdgLambdaPc, genie::kPdgSigmaPc, genie::kPdgSigmaPPc, and genie::InitialState::Tgt().

Referenced by XSec().

Member Data Documentation

◆ fMo

double genie::KovalenkoQELCharmPXSec::fMo
private

Definition at line 79 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and xiBar().

◆ fPDFModel

const PDFModelI* genie::KovalenkoQELCharmPXSec::fPDFModel
private

Definition at line 75 of file KovalenkoQELCharmPXSec.h.

Referenced by DR(), and LoadConfig().

◆ fResDMLambda

double genie::KovalenkoQELCharmPXSec::fResDMLambda
private

Definition at line 83 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and ResDM().

◆ fResDMSigma

double genie::KovalenkoQELCharmPXSec::fResDMSigma
private

Definition at line 84 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and ResDM().

◆ fScLambdaP

double genie::KovalenkoQELCharmPXSec::fScLambdaP
private

Definition at line 80 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and ZR().

◆ fScSigmaP

double genie::KovalenkoQELCharmPXSec::fScSigmaP
private

Definition at line 81 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and ZR().

◆ fScSigmaPP

double genie::KovalenkoQELCharmPXSec::fScSigmaPP
private

Definition at line 82 of file KovalenkoQELCharmPXSec.h.

Referenced by LoadConfig(), and ZR().

◆ fXSecIntegrator

const XSecIntegratorI* genie::KovalenkoQELCharmPXSec::fXSecIntegrator
private

const IntegratorI * fIntegrator;

Definition at line 77 of file KovalenkoQELCharmPXSec.h.

Referenced by Integral(), and LoadConfig().


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