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Public Member Functions | Static Public Member Functions | Private Attributes | Static Private Attributes | List of all members
PixeldEdxData Class Reference

#include <PixeldEdxData.h>

Collaboration diagram for PixeldEdxData:

Public Member Functions

void setPar (const int i, const double param)
 
void setPosNeg (const bool posneg)
 
void setFunctionType (const std::string &fun)
 
void setBetheBlochType (const std::string &bb)
 
void setMinimumdEdxForMass (const double mindedxMass)
 
double dEdxPdf (const double dedx, const double signedP, const double mass, const std::array< double, 9 > &par, const int offset) const
 
double fdEdxZero (const double x, const std::array< double, 9 > &par) const
 
double getPar (const int i, const int j) const
 
std::array< double, 3 > getP (const double dedxArg, const double signedP, const int nGoodPixels) const
 
std::array< double, 9 > getFirstNPar (const double p, const int nGoodPixels, const int np) const
 
double getMass (const double dedx, const double signedP, const int nGoodPixels) const
 
double getdEdx (const double p, const double mass, const int nGoodPixels) const
 
double getdEdx (const double p, const double mass, const std::array< double, 9 > &par) const
 
std::vector< float > getLikelihoods (const double dedx2, const double p2, const int nGoodPixels) const
 

Static Public Member Functions

static double crystalBall (const double x, const double x0, const double sig, const double alp, const double n)
 
static double asymGaus (const double x, const double x0, const double sig, const double asym)
 
static double moyal (const double x, const double Ep, const double R)
 
static double dEdx_5p_BG_aleph (const double xbg, const std::array< double, 9 > &pp)
 
static double dEdx_5p_aleph (const double p, double mass, const std::array< double, 9 > &pp)
 
static double dEdx_5p_BG (const double xbg, const std::array< double, 9 > &pp)
 
static double dEdx_5p (const double p, const double mass, const std::array< double, 9 > &pp)
 
static double dEdx_BG (const double xbg, const std::array< double, 9 > &pp)
 
static double dEdx_def (const double p, const double mass, const std::array< double, 9 > &pp)
 
static double dEdx_3p (const double p, const double mass, const std::array< double, 9 > &pp)
 

Private Attributes

std::unordered_map< uint32_t, std::vector< double > > m_par
 
bool m_posneg
 
std::string m_fun
 
std::string m_bb
 
double m_mindedxformass
 

Static Private Attributes

static constexpr double m_piMass = 0.13957
 
static constexpr double m_kMass = 0.49368
 
static constexpr double m_pMass = 0.93827
 

Detailed Description

Definition at line 23 of file PixeldEdxData.h.

Member Function Documentation

◆ asymGaus()

double PixeldEdxData::asymGaus ( const double  x,
const double  x0,
const double  sig,
const double  asym 
)
static

Definition at line 164 of file PixeldEdxData.cxx.

164  {
165  double sigp = sig*asym;
166  double sigm = sig/asym;
167  double fun;
168  if (x>x0) { fun = TMath::Gaus(x,x0,sigp,false); }
169  else { fun = TMath::Gaus(x,x0,sigm,false); }
170  return fun/(std::sqrt(2*M_PI)*((sigp*0.5) + (sigm*0.5)));
171 }

◆ crystalBall()

double PixeldEdxData::crystalBall ( const double  x,
const double  x0,
const double  sig,
const double  alp,
const double  n 
)
static

Definition at line 152 of file PixeldEdxData.cxx.

152  {
153  double A = std::pow(n/std::abs(alp),n)*std::exp(-std::pow(std::abs(alp),2)*0.5);
154  double B = n/std::abs(alp)-std::abs(alp);
155  double pull = (x-x0)/sig;
156  double N = sig*(n/alp*(1/(n-1))*std::exp(-alp*alp*0.5)+std::sqrt(M_PI_2)*(1+std::erf(alp*M_SQRT1_2)));
157  if (pull<alp){
158  return std::exp(-pull*pull*0.5)/N;
159  }
160  return A*std::pow(B+pull,-n)/N;
161 }

◆ dEdx_3p()

double PixeldEdxData::dEdx_3p ( const double  p,
const double  mass,
const std::array< double, 9 > &  pp 
)
static

Definition at line 216 of file PixeldEdxData.cxx.

216  {
217  double bg = p/mass;
218  return dEdx_BG(bg,pp);
219 }

◆ dEdx_5p()

double PixeldEdxData::dEdx_5p ( const double  p,
const double  mass,
const std::array< double, 9 > &  pp 
)
static

Definition at line 197 of file PixeldEdxData.cxx.

197  {
198  double bg = p/mass;
199  return dEdx_5p_BG(bg,pp);
200 }

◆ dEdx_5p_aleph()

double PixeldEdxData::dEdx_5p_aleph ( const double  p,
double  mass,
const std::array< double, 9 > &  pp 
)
static

Definition at line 185 of file PixeldEdxData.cxx.

185  {
186  double bg = p/mass;
187  return dEdx_5p_BG_aleph(bg,pp);
188 }

◆ dEdx_5p_BG()

double PixeldEdxData::dEdx_5p_BG ( const double  xbg,
const std::array< double, 9 > &  pp 
)
static

Definition at line 190 of file PixeldEdxData.cxx.

190  {
191  double gamma = std::sqrt(xbg*xbg+1);
192  double beta = std::sqrt(1.-1./(gamma*gamma));
193  double fdedx = pp[0]/std::pow(beta,pp[2])*std::log(1+std::pow(std::abs(pp[1])*beta*gamma,pp[4]))-pp[3];
194  return fdedx;
195 }

◆ dEdx_5p_BG_aleph()

double PixeldEdxData::dEdx_5p_BG_aleph ( const double  xbg,
const std::array< double, 9 > &  pp 
)
static

Definition at line 179 of file PixeldEdxData.cxx.

179  {
180  double gamma = std::sqrt(xbg*xbg+1.);
181  double beta = std::sqrt(1.-1./(gamma*gamma));
182  return pp[0]/std::pow(beta,pp[3])*(pp[1]-std::pow(beta,pp[3])-std::log(pp[2]+1./std::pow(beta*gamma,pp[4])));
183 }

◆ dEdx_BG()

double PixeldEdxData::dEdx_BG ( const double  xbg,
const std::array< double, 9 > &  pp 
)
static

Definition at line 202 of file PixeldEdxData.cxx.

202  {
203  double gamma = std::sqrt(xbg*xbg+1);
204  double beta = std::sqrt(1-1/(gamma*gamma));
205  double beta2 = beta*beta;
206  double gamma2 = gamma*gamma;
207  double fdedx = (pp[0]/std::pow(beta2,pp[2]))*(std::log(std::abs(pp[1])*beta2*gamma2))-pp[0];
208  return fdedx;
209 }

◆ dEdx_def()

double PixeldEdxData::dEdx_def ( const double  p,
const double  mass,
const std::array< double, 9 > &  pp 
)
static

Definition at line 211 of file PixeldEdxData.cxx.

211  {
212  double bg = p/mass;
213  return dEdx_BG(bg,pp);
214 }

◆ dEdxPdf()

double PixeldEdxData::dEdxPdf ( const double  dedx,
const double  signedP,
const double  mass,
const std::array< double, 9 > &  par,
const int  offset 
) const

Definition at line 30 of file PixeldEdxData.cxx.

30  {
31  const auto p = std::abs(signedP);
32 
33  double x0 = getdEdx(p,mass,par);
34 
35  double pLG[4]={1,1,1,1};
36 
37  if (m_fun=="AG") {
38  x0 = std::log(x0) - 9.4;
39  pLG[1] = x0;
40  pLG[0] = par[offset]+par[offset+2];
41  pLG[3] = par[offset+1]+par[offset+3];
42  return asymGaus(dedx, pLG[1], pLG[0], pLG[3]);
43  }
44  else if (m_fun=="CB") {
45  x0 = std::log(x0) - 9.4;
46  pLG[0] = x0;
47  pLG[1] = par[offset];
48  pLG[2] = par[offset+1];
49  pLG[3] = par[offset+2];
50  return crystalBall(dedx, pLG[0], pLG[1], pLG[2], pLG[3]);
51  }
52  return 0;
53 }

◆ fdEdxZero()

double PixeldEdxData::fdEdxZero ( const double  x,
const std::array< double, 9 > &  par 
) const

Definition at line 55 of file PixeldEdxData.cxx.

55  {
56  return getdEdx(par[6],x,par)-par[5];
57 }

◆ getdEdx() [1/2]

double PixeldEdxData::getdEdx ( const double  p,
const double  mass,
const int  nGoodPixels 
) const

Definition at line 133 of file PixeldEdxData.cxx.

133  {
134  if (nGoodPixels<=0) { return -2; }
135  const auto & par = getFirstNPar(signedP,nGoodPixels,5);
136  const auto p = std::abs(signedP);
137  if (m_bb=="3p") { return dEdx_3p(p,mass,par); }
138  else if (m_bb=="5p") { return dEdx_5p(p,mass,par); }
139  else if (m_bb=="5p_aleph") { return dEdx_5p_aleph(p,mass,par); }
140  return 0;
141 }

◆ getdEdx() [2/2]

double PixeldEdxData::getdEdx ( const double  p,
const double  mass,
const std::array< double, 9 > &  par 
) const

Definition at line 143 of file PixeldEdxData.cxx.

143  {
144  const auto p = std::abs(signedP);
145  if (m_bb=="3p") { return dEdx_3p(p,mass,par); }
146  else if (m_bb=="5p") { return dEdx_5p(p,mass,par); }
147  else if (m_bb=="5p_aleph") { return dEdx_5p_aleph(p,mass,par); }
148  return 0;
149 }

◆ getFirstNPar()

std::array< double, 9 > PixeldEdxData::getFirstNPar ( const double  p,
const int  nGoodPixels,
const int  np 
) const

Definition at line 93 of file PixeldEdxData.cxx.

93  {
94  std::array<double,9> par{};
95  auto setNGoodPixels{nGoodPixels};
96  if (setNGoodPixels>5) { setNGoodPixels=5; }
97  if (p<0 && m_posneg) { setNGoodPixels += 5; }
98  for (int i=0;i<npar;i++){
99  par[i] = getPar(setNGoodPixels-1,i);
100  }
101  return par;
102 }

◆ getLikelihoods()

std::vector< float > PixeldEdxData::getLikelihoods ( const double  dedx2,
const double  p2,
const int  nGoodPixels 
) const

Definition at line 222 of file PixeldEdxData.cxx.

222  {
223  double dedx=dedx2;
224  double p=p2*0.001;
225  std::vector<float> vecResult(3,-1);
226  if (nGoodPixels>0){
227  const auto & array { getP(dedx,p,nGoodPixels)};
228  std::copy(array.begin(), array.end(),vecResult.begin());
229  }
230  return vecResult;
231 }

◆ getMass()

double PixeldEdxData::getMass ( const double  dedx,
const double  signedP,
const int  nGoodPixels 
) const

Definition at line 104 of file PixeldEdxData.cxx.

104  {
105 
106  if (dedx<m_mindedxformass) { return m_piMass; }
107 
108  if (nGoodPixels<=0) { return -2; }
109  auto par = getFirstNPar(signedP,nGoodPixels,5);
110 
111  const auto p = std::abs(signedP);
112 
113  par[5] = dedx;
114  par[6] = p;
115 
116  double xmin=0;
117  double xmax=14000;
118 
119  double xmed = (xmin+xmax)*0.5;
120  double prec=1e-6;
121 
122  if (dedx<15000){ return m_piMass; }
123 
124  do {
125  if (fdEdxZero(xmed,par)==0) { return xmed; }
126  if (fdEdxZero(xmed,par)*fdEdxZero(xmax,par)>0) { xmax=xmed; }
127  else { xmin=xmed; }
128  xmed=(xmin+xmax)*0.5;
129  } while (std::abs(xmax-xmin)>prec);
130  return xmed;
131 }

◆ getP()

std::array< double, 3 > PixeldEdxData::getP ( const double  dedxArg,
const double  signedP,
const int  nGoodPixels 
) const

Definition at line 71 of file PixeldEdxData.cxx.

71  {
72  std::array<double,3> vhypo{-2,-2,-2};
73  if (nGoodPixels<=0) { return vhypo; }
74  const auto & par = getFirstNPar(signedP,nGoodPixels,9);
75  const auto p = std::fabs(signedP);
76 
77  const auto dedx = std::log(dedxArg)-9.4;
78 
79  double pk = dEdxPdf(dedx,p,m_kMass ,par,5);
80  double pp = dEdxPdf(dedx,p,m_pMass ,par,5);
81  double ppi = dEdxPdf(dedx,p,m_piMass,par,5);
82 
83  if (ppi+pk+pp>=0) {
84  vhypo = {ppi, pk,pp};
85  }
86  else {
87  vhypo ={-1,-1,-1};
88  }
89  return vhypo;
90 }

◆ getPar()

double PixeldEdxData::getPar ( const int  i,
const int  j 
) const

Definition at line 59 of file PixeldEdxData.cxx.

59  {
60  auto itr = m_par.find(i);
61  if (itr!=m_par.end()) {
62  const std::vector<double> &param = itr->second;
63  if (j<(int)param.size()) {
64  return param[j];
65  }
66  }
67  return 0;
68 }

◆ moyal()

double PixeldEdxData::moyal ( const double  x,
const double  Ep,
const double  R 
)
static

Definition at line 174 of file PixeldEdxData.cxx.

174  {
175  double lambda = (x-Ep)/R;
176  return std::sqrt(std::exp(-lambda-std::exp(-lambda))*M_1_PI*0.5);
177 }

◆ setBetheBlochType()

void PixeldEdxData::setBetheBlochType ( const std::string &  bb)

Definition at line 22 of file PixeldEdxData.cxx.

22  {
23  m_bb = bb;
24 }

◆ setFunctionType()

void PixeldEdxData::setFunctionType ( const std::string &  fun)

Definition at line 18 of file PixeldEdxData.cxx.

18  {
19  m_fun = fun;
20 }

◆ setMinimumdEdxForMass()

void PixeldEdxData::setMinimumdEdxForMass ( const double  mindedxMass)

Definition at line 26 of file PixeldEdxData.cxx.

26  {
27  m_mindedxformass = mindedxMass;
28 }

◆ setPar()

void PixeldEdxData::setPar ( const int  i,
const double  param 
)

Definition at line 10 of file PixeldEdxData.cxx.

10  {
11  m_par[i].push_back(param);
12 }

◆ setPosNeg()

void PixeldEdxData::setPosNeg ( const bool  posneg)

Definition at line 14 of file PixeldEdxData.cxx.

14  {
15  m_posneg = posneg;
16 }

Member Data Documentation

◆ m_bb

std::string PixeldEdxData::m_bb
private

Definition at line 66 of file PixeldEdxData.h.

◆ m_fun

std::string PixeldEdxData::m_fun
private

Definition at line 65 of file PixeldEdxData.h.

◆ m_kMass

constexpr double PixeldEdxData::m_kMass = 0.49368
staticconstexprprivate

Definition at line 60 of file PixeldEdxData.h.

◆ m_mindedxformass

double PixeldEdxData::m_mindedxformass
private

Definition at line 67 of file PixeldEdxData.h.

◆ m_par

std::unordered_map<uint32_t,std::vector<double> > PixeldEdxData::m_par
private

Definition at line 63 of file PixeldEdxData.h.

◆ m_piMass

constexpr double PixeldEdxData::m_piMass = 0.13957
staticconstexprprivate

Definition at line 59 of file PixeldEdxData.h.

◆ m_pMass

constexpr double PixeldEdxData::m_pMass = 0.93827
staticconstexprprivate

Definition at line 61 of file PixeldEdxData.h.

◆ m_posneg

bool PixeldEdxData::m_posneg
private

Definition at line 64 of file PixeldEdxData.h.

The documentation for this class was generated from the following files:
generateReferenceFile.fun
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Definition: generateReferenceFile.py:18
PixeldEdxData::getdEdx
double getdEdx(const double p, const double mass, const int nGoodPixels) const
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PixeldEdxData::asymGaus
static double asymGaus(const double x, const double x0, const double sig, const double asym)
Definition: PixeldEdxData.cxx:164
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static constexpr double m_pMass
Definition: PixeldEdxData.h:61
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double dEdxPdf(const double dedx, const double signedP, const double mass, const std::array< double, 9 > &par, const int offset) const
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PixeldEdxData::dEdx_BG
static double dEdx_BG(const double xbg, const std::array< double, 9 > &pp)
Definition: PixeldEdxData.cxx:202
PixeldEdxData::dEdx_5p_BG
static double dEdx_5p_BG(const double xbg, const std::array< double, 9 > &pp)
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PixeldEdxData::m_fun
std::string m_fun
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PixeldEdxData::m_kMass
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PixeldEdxData::dEdx_5p
static double dEdx_5p(const double p, const double mass, const std::array< double, 9 > &pp)
Definition: PixeldEdxData.cxx:197
PixeldEdxData::dEdx_3p
static double dEdx_3p(const double p, const double mass, const std::array< double, 9 > &pp)
Definition: PixeldEdxData.cxx:216
PixeldEdxData::crystalBall
static double crystalBall(const double x, const double x0, const double sig, const double alp, const double n)
Definition: PixeldEdxData.cxx:152
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Definition: jobOptions.Superchic_UPC_yyMuMu.py:20
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PixeldEdxData::getP
std::array< double, 3 > getP(const double dedxArg, const double signedP, const int nGoodPixels) const
Definition: PixeldEdxData.cxx:71
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Definition: MuonParamDefs.h:144
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std::string m_bb
Definition: PixeldEdxData.h:66
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static double dEdx_5p_BG_aleph(const double xbg, const std::array< double, 9 > &pp)
Definition: PixeldEdxData.cxx:179
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