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genie::BYPDF Class Reference

Computes corrected PDFs according to the Bodek-Yang model. More...

#include <BYPDF.h>

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

 BYPDF ()
 
 BYPDF (string config)
 
virtual ~BYPDF ()
 
double UpValence (double x, double q2) const
 PDFModelI interface implementation. More...
 
double DownValence (double x, double q2) const
 
double UpSea (double x, double q2) const
 
double DownSea (double x, double q2) const
 
double Strange (double x, double q2) const
 
double Charm (double x, double q2) const
 
double Bottom (double x, double q2) const
 
double Top (double x, double q2) const
 
double Gluon (double x, double q2) const
 
PDF_t AllPDFs (double x, double q2) const
 
void Configure (const Registry &config)
 
void Configure (string config)
 
- Public Member Functions inherited from genie::PDFModelI
virtual ~PDFModelI ()
 
- 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. 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 AlgorithmSubAlg (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 DeltaDU (double x) const
 

Private Attributes

const PDFModelIfBasePDFModel
 configuration parameters More...
 
double fX0
 correction param X0 More...
 
double fX1
 correction param X1 More...
 
double fX2
 correction param X2 More...
 
double fQ2min
 min. Q2 for PDF evaluation More...
 

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::PDFModelI
 PDFModelI ()
 
 PDFModelI (string name)
 
 PDFModelI (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. 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
 
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. More...
 
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 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...
 
AlgMapfOwnedSubAlgMp
 local pool for owned sub-algs (taken out of the factory pool) More...
 

Detailed Description

Computes corrected PDFs according to the Bodek-Yang model.

      Concrete implementation of the PDFModelI interface.
Author
Costas Andreopoulos <c.andreopoulos cern.ch> University of Liverpool
Created:
September 29, 2004
License:
Copyright (c) 2003-2024, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 27 of file BYPDF.h.

Constructor & Destructor Documentation

BYPDF::BYPDF ( )

Definition at line 21 of file BYPDF.cxx.

21  :
22 PDFModelI("genie::BYPDF")
23 {
24 
25 }
BYPDF::BYPDF ( string  config)

Definition at line 27 of file BYPDF.cxx.

27  :
28 PDFModelI("genie::BYPDF", config)
29 {
30 
31 }
BYPDF::~BYPDF ( )
virtual

Definition at line 33 of file BYPDF.cxx.

34 {
35 
36 }

Member Function Documentation

PDF_t BYPDF::AllPDFs ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 83 of file BYPDF.cxx.

References genie::PDFModelI::AllPDFs(), DeltaDU(), fBasePDFModel, fQ2min, LOG, pDEBUG, and genie::units::us.

Referenced by Bottom(), Charm(), DownSea(), DownValence(), Gluon(), Strange(), Top(), UpSea(), and UpValence().

84 {
85 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
86  LOG("BodekYang", pDEBUG)
87  << "Inputs: x = " << x << ", |q2| = " << TMath::Abs(q2);
88 #endif
89  if(TMath::Abs(q2) < fQ2min) q2=fQ2min;
90 
91  // get the uncorrected PDFs
92  PDF_t uncorrected_pdfs = fBasePDFModel->AllPDFs(x, q2);
93  double uv = uncorrected_pdfs.uval;
94  double us = uncorrected_pdfs.usea;
95  double dv = uncorrected_pdfs.dval;
96  double ds = uncorrected_pdfs.dsea;
97 
98  // compute correction factor delta(d/u)
99  double delta = this->DeltaDU(x);
100 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
101  LOG("BodekYang", pDEBUG) << "delta(d/u) = " << delta;
102 #endif
103 
104  // compute u/(u+d) ratios for both valence & sea quarks
105  double val = uv+dv;
106  double sea = us+ds;
107  double rv = (val==0) ? 0. : uv/val;
108  double rs = (sea==0) ? 0. : us/sea;
109 
110 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
111  LOG("BodekYang", pDEBUG)
112  << "valence[u/(u+d)] = " << rv << ", sea[u/(u+d)] = " << rs;
113 #endif
114 
115  // compute the corrected valence and sea quark PDFs:
116  double uv_c = uv / ( 1 + delta*rv);
117  double dv_c = (dv + uv*delta) / ( 1 + delta*rv);
118  double us_c = us / ( 1 + delta*rs);
119  double ds_c = (ds + us*delta) / ( 1 + delta*rs);
120 
121 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
122  LOG("BodekYang", pDEBUG) << "Bodek-Yang PDF correction:";
123  LOG("BodekYang", pDEBUG) << "uv: " << uv << " --> " << uv_c;
124  LOG("BodekYang", pDEBUG) << "dv: " << dv << " --> " << dv_c;
125  LOG("BodekYang", pDEBUG) << "us: " << us << " --> " << us_c;
126  LOG("BodekYang", pDEBUG) << "ds: " << ds << " --> " << ds_c;
127 #endif
128 
129  // fill in and return the corrected PDFs:
130  PDF_t corrected_pdfs;
131 
132  corrected_pdfs.uval = uv_c;
133  corrected_pdfs.dval = dv_c;
134  corrected_pdfs.usea = us_c;
135  corrected_pdfs.dsea = ds_c;
136  corrected_pdfs.str = uncorrected_pdfs.str;
137  corrected_pdfs.chm = uncorrected_pdfs.chm;
138  corrected_pdfs.bot = uncorrected_pdfs.bot;
139  corrected_pdfs.top = uncorrected_pdfs.top;
140  corrected_pdfs.gl = uncorrected_pdfs.gl;
141 
142  return corrected_pdfs;
143 }
static constexpr double us
Definition: Units.h:97
virtual PDF_t AllPDFs(double x, double Q2) const =0
double fQ2min
min. Q2 for PDF evaluation
Definition: BYPDF.h:64
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
double DeltaDU(double x) const
Definition: BYPDF.cxx:145
A struct to hold PDF set data.
const PDFModelI * fBasePDFModel
configuration parameters
Definition: BYPDF.h:59
#define pDEBUG
Definition: Messenger.h:63
double BYPDF::Bottom ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 68 of file BYPDF.cxx.

References AllPDFs().

69 {
70  return AllPDFs(x,q2).bot;
71 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::Charm ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 63 of file BYPDF.cxx.

References AllPDFs().

64 {
65  return AllPDFs(x,q2).chm;
66 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
void BYPDF::Configure ( const Registry config)
virtual

overload the Algorithm::Configure() methods to load private data members from configuration options

Reimplemented from genie::Algorithm.

Definition at line 153 of file BYPDF.cxx.

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

154 {
155  Algorithm::Configure(config);
156  this->LoadConfig();
157 }
void LoadConfig(void)
Definition: BYPDF.cxx:165
virtual void Configure(const Registry &config)
Definition: Algorithm.cxx:62
void BYPDF::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 159 of file BYPDF.cxx.

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

160 {
161  Algorithm::Configure(config);
162  this->LoadConfig();
163 }
void LoadConfig(void)
Definition: BYPDF.cxx:165
virtual void Configure(const Registry &config)
Definition: Algorithm.cxx:62
double BYPDF::DeltaDU ( double  x) const
private

Definition at line 145 of file BYPDF.cxx.

References fX0, fX1, and fX2.

Referenced by AllPDFs().

146 {
147 // Computes the BY correction factor delta(d/u)
148 
149  double d = fX0 + fX1 * x + fX2 * TMath::Power(x,2);
150  return d;
151 }
double fX1
correction param X1
Definition: BYPDF.h:62
double fX0
correction param X0
Definition: BYPDF.h:61
double fX2
correction param X2
Definition: BYPDF.h:63
double BYPDF::DownSea ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 53 of file BYPDF.cxx.

References AllPDFs().

54 {
55  return AllPDFs(x,q2).dsea;
56 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::DownValence ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 43 of file BYPDF.cxx.

References AllPDFs().

44 {
45  return AllPDFs(x,q2).dval;
46 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::Gluon ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 78 of file BYPDF.cxx.

References AllPDFs().

79 {
80  return AllPDFs(x,q2).gl;
81 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
void BYPDF::LoadConfig ( void  )
private

Definition at line 165 of file BYPDF.cxx.

References fBasePDFModel, fQ2min, fX0, fX1, fX2, genie::Algorithm::GetParam(), and genie::Algorithm::SubAlg().

Referenced by Configure().

166 {
167 
168  GetParam( "BY-X0", fX0 ) ;
169  GetParam( "BY-X1", fX1 ) ;
170  GetParam( "BY-X2", fX2 ) ;
171 
172  GetParam( "PDF-Q2min", fQ2min ) ;
173 
174  // get the base PDF model (typically GRV9* LO)
175  fBasePDFModel =
176  dynamic_cast<const PDFModelI *>(this->SubAlg("Uncorr-PDF-Set"));
177 }
double fX1
correction param X1
Definition: BYPDF.h:62
double fX0
correction param X0
Definition: BYPDF.h:61
Pure abstract base class. Defines the PDFModelI interface to be implemented by wrapper classes to exi...
Definition: PDFModelI.h:28
double fQ2min
min. Q2 for PDF evaluation
Definition: BYPDF.h:64
double fX2
correction param X2
Definition: BYPDF.h:63
const PDFModelI * fBasePDFModel
configuration parameters
Definition: BYPDF.h:59
bool GetParam(const RgKey &name, T &p, bool is_top_call=true) const
const Algorithm * SubAlg(const RgKey &registry_key) const
Definition: Algorithm.cxx:345
double BYPDF::Strange ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 58 of file BYPDF.cxx.

References AllPDFs().

59 {
60  return AllPDFs(x,q2).str;
61 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::Top ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 73 of file BYPDF.cxx.

References AllPDFs().

74 {
75  return AllPDFs(x,q2).top;
76 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::UpSea ( double  x,
double  q2 
) const
virtual

Implements genie::PDFModelI.

Definition at line 48 of file BYPDF.cxx.

References AllPDFs().

49 {
50  return AllPDFs(x,q2).usea;
51 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83
double BYPDF::UpValence ( double  x,
double  q2 
) const
virtual

PDFModelI interface implementation.

Implements genie::PDFModelI.

Definition at line 38 of file BYPDF.cxx.

References AllPDFs().

39 {
40  return AllPDFs(x,q2).uval;
41 }
PDF_t AllPDFs(double x, double q2) const
Definition: BYPDF.cxx:83

Member Data Documentation

const PDFModelI* genie::BYPDF::fBasePDFModel
private

configuration parameters

base (uncorrected) PDF model

Definition at line 59 of file BYPDF.h.

Referenced by AllPDFs(), and LoadConfig().

double genie::BYPDF::fQ2min
private

min. Q2 for PDF evaluation

Definition at line 64 of file BYPDF.h.

Referenced by AllPDFs(), and LoadConfig().

double genie::BYPDF::fX0
private

correction param X0

Definition at line 61 of file BYPDF.h.

Referenced by DeltaDU(), and LoadConfig().

double genie::BYPDF::fX1
private

correction param X1

Definition at line 62 of file BYPDF.h.

Referenced by DeltaDU(), and LoadConfig().

double genie::BYPDF::fX2
private

correction param X2

Definition at line 63 of file BYPDF.h.

Referenced by DeltaDU(), and LoadConfig().


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