LHAPDF Namespace Reference

Namespace for all LHAPDF functions and classes. More...

Classes
class	AlphaS
	Calculator interface for computing alpha_s(Q2) in various ways. More...
class	AlphaS_Analytic
	Calculate alpha_s(Q2) by an analytic approximation. More...
class	AlphaS_Ipol
class	AlphaS_ODE
	Solve the differential equation in alphaS using an implementation of RK4. More...
class	AlphaSArray
	Internal storage class for alpha_s interpolation grids. More...
class	AlphaSError
	Error for general AlphaS computation problems. More...
struct	bad_lexical_cast
	When lexical_cast goes bad. More...
class	BicubicInterpolator
	Implementation of bicubic interpolation. More...
class	BilinearInterpolator
	Implementation of bilinear interpolation. More...
class	Config
	Class for PDF set metadata and manipulation. More...
class	ContinuationExtrapolator
class	ErrExtrapolator
	Extrapolates using the closest point on the Grid. More...
class	Exception
	Generic unspecialised LHAPDF runtime error. More...
class	Extrapolator
	The general interface for extrapolating beyond grid boundaries. More...
class	FactoryError
	Error to be raised by object factories given invalid requests. More...
class	File
	MPI-safe file I/O interface. More...
class	FlavorError
	Error for requests for unsupported/invalid flavour PIDs. More...
class	GridError
	Error for general PDF grid problems. More...
class	GridPDF
	A PDF defined via an interpolation grid. More...
class	IndexError
	Error to be raised when a LHAPDF ID indexing fails. More...
class	Info
	Metadata base class for PDFs, PDF sets, or global configuration. More...
class	Interpolator
	The general interface for interpolating between grid points. More...
class	KnotArray1F
	Internal storage class for PDF data point grids. More...
class	KnotArrayNF
	A collection of {KnotArray1F}s accessed by PID code. More...
class	LogBicubicInterpolator
	Implementation of bicubic interpolation. More...
class	LogBilinearInterpolator
	Implementation of bilinear interpolation. More...
class	LogicError
	Error for places where it should not have been possible to get to! More...
class	MetadataError
	Error for unfound or broken metadata entries. More...
class	NearestPointExtrapolator
	Extrapolates using the closest point on the Grid. More...
class	NotImplementedError
	This feature doesn't exist yet. More...
class	PDF
	PDF is the general interface for access to parton density information. More...
class	PDFInfo
	Metadata class for PDF members. More...
class	PDFSet
	Class for PDF set metadata and manipulation. More...
struct	PDFUncertainty
	Structure for storage of uncertainty info calculated over a PDF error set. More...
class	RangeError
	Error to be thrown when out of the valid range of a PDF. More...
class	ReadError
	Error for file reading errors. More...
class	UserError
	Problem exists between keyboard and chair. More...
class	VersionError
	Error to be raised when a newer LHAPDF version is needed. More...

Functions
int	verbosity ()
void	setVerbosity (int v)
PDF *	mkPDF (const std::string &setname, int member)
PDF *	mkPDF (int lhaid)
PDF *	mkPDF (const std::string &setname_nmem)
PDFSet &	getPDFSet (const std::string &setname)
void	mkPDFs (const std::string &setname, std::vector< PDF * > &pdfs)
	Get all PDFs in a named set (return by filling the supplied vector).
std::vector< PDF * >	mkPDFs (const std::string &setname)
	Get all PDFs in a named set (return by a new vector).
template<typename PTR >
void	mkPDFs (const std::string &setname, std::vector< PTR > &pdfs)
Info &	getConfig ()
PDFInfo *	mkPDFInfo (const std::string &setname, int member)
PDFInfo *	mkPDFInfo (int lhaid)
Interpolator *	mkInterpolator (const std::string &name)
Extrapolator *	mkExtrapolator (const std::string &name)
AlphaS *	mkAlphaS (const Info &info)
	Make an AlphaS object from an Info object. More...
AlphaS *	mkAlphaS (const std::string &setname)
	Make an AlphaS object for the named PDF set. More...
AlphaS *	mkAlphaS (const std::string &setname, int member)
	Make an AlphaS object for the specified PDF. More...
AlphaS *	mkAlphaS (int lhaid)
	Make an AlphaS object for the specified PDF. More...
AlphaS *	mkBareAlphaS (const std::string &type)
	Make an AlphaS object of the requested type without a PDF reference. More...
void	flushFileCache ()
	Global function to flush the MPI-safe file cache.
std::map< int, std::string > &	getPDFIndex ()
	Get the singleton LHAPDF set ID -> PDF index map.
std::pair< std::string, int >	lookupPDF (int lhaid)
std::pair< std::string, int >	lookupPDF (const std::string &pdfstr)
	Decode a single PDF member ID string into a setname,memid pair. More...
int	lookupLHAPDFID (const std::string &setname, int nmem)
int	lookupLHAPDFID (const std::string &setname_nmem)
	Look up the member's LHAPDF index from a setname/member string.
std::string	version ()
	Get the LHAPDF library version code (as a string)

Detailed Description

Namespace for all LHAPDF functions and classes.

Function Documentation

weightxQ() [1/2]

double LHAPDF::weightxQ ( int  id, double  x, double  Q, const PDF &  basepdf, const PDF &  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for a beam with id,x,Q parameters, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxQ() [2/2]

template<typename PDFPTR >

double LHAPDF::weightxQ ( int  id, double  x, double  Q, const PDFPTR  basepdf, const PDFPTR  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for a beam with id,x,Q parameters, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxQ2() [1/2]

double LHAPDF::weightxQ2 ( int  id, double  x, double  Q2, const PDF &  basepdf, const PDF &  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for a beam with id,x,Q parameters, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxQ2() [2/2]

template<typename PDFPTR >

double LHAPDF::weightxQ2 ( int  id, double  x, double  Q2, const PDFPTR  basepdf, const PDFPTR  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for a beam with id,x,Q parameters, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxxQ() [1/2]

double LHAPDF::weightxxQ ( int  id1, int  id2, double  x1, double  x2, double  Q, const PDF &  basepdf, const PDF &  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for two beams, one with id1,x1 and the other with id2,x2, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxxQ() [2/2]

template<typename PDFPTR >

double LHAPDF::weightxxQ ( int  id1, int  id2, double  x1, double  x2, double  Q, const PDFPTR  basepdf, const PDFPTR  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for two beams, one with id1,x1 and the other with id2,x2, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxxQ2() [1/2]

double LHAPDF::weightxxQ2 ( int  id1, int  id2, double  x1, double  x2, double  Q2, const PDF &  basepdf, const PDF &  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for two beams, one with id1,x1 and the other with id2,x2, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.

weightxxQ2() [2/2]

template<typename PDFPTR >

double LHAPDF::weightxxQ2 ( int  id1, int  id2, double  x1, double  x2, double  Q2, const PDFPTR  basepdf, const PDFPTR  newpdf, double  aschk = 5e-2  )

inline

Get the PDF reweighting factor for two beams, one with id1,x1 and the other with id2,x2, from basepdf to newpdf

Note

For NLO calculations, in general different PDF values enter for each counterterm: be careful.