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DanielSamitzsawenzel
DanielSamitz
authored and
sawenzel
committed
add psi(2S) and upsilon
1 parent 1694a00 commit 701506c

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6 files changed

+282
-67
lines changed

6 files changed

+282
-67
lines changed

‎GeneratorParam/ExodusDecayer.cxx‎

Lines changed: 50 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -29,6 +29,8 @@ ExodusDecayer::ExodusDecayer():
2929
fEPMassPhiDalitz(0),
3030
fEPMassPhiDalitz_toPi0(0),
3131
fEPMassJPsi(0),
32+
fEPMassPsi2S(0),
33+
fEPMassUpsilon(0),
3234
fPol(new TF1("dsigdcostheta","1.+[0]*x*x",-1.,1.)), /* Polarization Function for resonances */
3335
fInit(0),
3436
fDecayToDimuon(0)
@@ -51,6 +53,8 @@ ExodusDecayer::~ExodusDecayer()
5153
delete fEPMassPhiDalitz;
5254
delete fEPMassPhiDalitz_toPi0;
5355
delete fEPMassJPsi;
56+
delete fEPMassPsi2S;
57+
delete fEPMassUpsilon;
5458
delete fPol;
5559
}
5660

@@ -74,16 +78,16 @@ void ExodusDecayer::Init()
7478

7579
Float_t binwidth;
7680
Float_t mass_bin, mass_min, mass_max;
77-
Double_t vmass_eta, vmass_rho, vmass_omega, vmass_phi, vmass_jpsi, vwidth_eta, vwidth_rho, vwidth_omega, vwidth_phi, vwidth_jpsi;
78-
Double_t weight_eta, weight_rho, weight_omega, weight_phi, weight_jpsi;
81+
Double_t vmass_eta, vmass_rho, vmass_omega, vmass_phi, vmass_jpsi, vmass_psi2s, vmass_upsilon, vwidth_eta, vwidth_rho, vwidth_omega, vwidth_phi, vwidth_jpsi, vwidth_psi2s, vwidth_upsilon;
82+
Double_t weight_eta, weight_rho, weight_omega, weight_phi, weight_jpsi, weight_psi2s, weight_upsilon;
7983

8084
//================================================================================//
8185
// Create electron pair mass histograms from dalitz decays //
8286
//================================================================================//
8387

8488
// Get the particle masses
8589
// parent
86-
nbins = 1000;
90+
nbins = 2000;
8791
mass_min = 0.;
8892
mass_max = 0.;
8993
pionmass = (TDatabasePDG::Instance()->GetParticle(111))->Mass();
@@ -315,29 +319,41 @@ void ExodusDecayer::Init()
315319
vmass_omega = (TDatabasePDG::Instance()->GetParticle(223))->Mass();
316320
vmass_phi = (TDatabasePDG::Instance()->GetParticle(333))->Mass();
317321
vmass_jpsi = (TDatabasePDG::Instance()->GetParticle(443))->Mass();
322+
vmass_psi2s = (TDatabasePDG::Instance()->GetParticle(100443))->Mass();
323+
vmass_upsilon = (TDatabasePDG::Instance()->GetParticle(553))->Mass();
318324
// Get the particle widths
319325
// parent
320326
vwidth_eta = (TDatabasePDG::Instance()->GetParticle(221))->Width();
321327
vwidth_rho = (TDatabasePDG::Instance()->GetParticle(113))->Width();
322328
vwidth_omega = (TDatabasePDG::Instance()->GetParticle(223))->Width();
323329
vwidth_phi = (TDatabasePDG::Instance()->GetParticle(333))->Width();
324330
vwidth_jpsi = (TDatabasePDG::Instance()->GetParticle(443))->Width();
331+
vwidth_psi2s = (TDatabasePDG::Instance()->GetParticle(100443))->Width();
332+
vwidth_upsilon = (TDatabasePDG::Instance()->GetParticle(553))->Width();
325333

326334
if( vwidth_jpsi < 1e-6 ){
327335
printf(Form("ExodusDecayer: Warning: Width JPsi = %f (Mass = %f) < 1e-6, set to 1e-6\n",vwidth_jpsi,vmass_jpsi));
328336
vwidth_jpsi = 1e-6;
329337
}
338+
if( vwidth_psi2s < 1e-6 ){
339+
printf(Form("ExodusDecayer: Warning: Width Psi2S = %f (Mass = %f) < 1e-6, set to 1e-6\n",vwidth_psi2s,vmass_psi2s));
340+
vwidth_psi2s = 1e-6;
341+
}
342+
if( vwidth_upsilon < 1e-6 ){
343+
printf(Form("ExodusDecayer: Warning: Width Upsilon = %f (Mass = %f) < 1e-6, set to 1e-6\n",vwidth_upsilon,vmass_upsilon));
344+
vwidth_upsilon = 1e-6;
345+
}
330346

331347

332348
if ( mass_min == 0. && mass_max == 0. )
333349
{
334350
mass_min = 2.*pimass;
335-
mass_max = 5.;
351+
mass_max = 10.;
336352
}
337353

338354
binwidth = (mass_max-mass_min)/(Double_t)nbins;
339355

340-
// create pair mass histograms for resonances of rho, omega, phi and jpsi
356+
// create pair mass histograms for resonances of rho, omega, phi, jpsi, psi2s and upsilon
341357
fEPMassEta = new TH1F("fEPMassEta","mass eta",nbins,mass_min,mass_max);
342358
fEPMassEta->SetDirectory(0);
343359
fEPMassRho = new TH1F("fEPMassRho","mass rho",nbins,mass_min,mass_max);
@@ -348,6 +364,10 @@ void ExodusDecayer::Init()
348364
fEPMassPhi->SetDirectory(0);
349365
fEPMassJPsi = new TH1F("fEPMassJPsi","mass jpsi",nbins,mass_min,mass_max);
350366
fEPMassJPsi->SetDirectory(0);
367+
fEPMassPsi2S = new TH1F("fEPMassPsi2S","mass psi2s",nbins,mass_min,mass_max);
368+
fEPMassPsi2S->SetDirectory(0);
369+
fEPMassUpsilon = new TH1F("fEPMassUpsilon","mass upsilon",nbins,mass_min,mass_max);
370+
fEPMassUpsilon->SetDirectory(0);
351371

352372
for (ibin=1; ibin<=nbins; ibin++ )
353373
{
@@ -360,13 +380,17 @@ void ExodusDecayer::Init()
360380
weight_omega = (Float_t)GounarisSakurai(mass_bin,vmass_omega,vwidth_omega,emass);
361381
weight_phi = (Float_t)GounarisSakurai(mass_bin,vmass_phi,vwidth_phi,emass);
362382
weight_jpsi = (Float_t)Lorentz(mass_bin,vmass_jpsi,vwidth_jpsi);
383+
weight_psi2s = (Float_t)Lorentz(mass_bin,vmass_psi2s,vwidth_psi2s);
384+
weight_upsilon = (Float_t)Lorentz(mass_bin,vmass_upsilon,vwidth_upsilon);
363385

364386
// Fill histograms of electron pair masses from resonance decays
365387
fEPMassEta ->AddBinContent(ibin,weight_eta);
366388
fEPMassRho ->AddBinContent(ibin,weight_rho);
367389
fEPMassOmega->AddBinContent(ibin,weight_omega);
368390
fEPMassPhi ->AddBinContent(ibin,weight_phi);
369391
fEPMassJPsi ->AddBinContent(ibin,weight_jpsi);
392+
fEPMassPsi2S ->AddBinContent(ibin,weight_psi2s);
393+
fEPMassUpsilon ->AddBinContent(ibin,weight_upsilon);
370394
}
371395
fInit=1;
372396
}
@@ -478,7 +502,11 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
478502

479503
// -------- get id of the partner from idpart ------- //
480504
Int_t idpartner=idpart/1000;
481-
idpart=idpart%1000;
505+
if (idpart!=100443){ //protect psi(2S) pdg code (100443)
506+
idpart=idpart%1000;
507+
} else {
508+
idpartner=0;
509+
}
482510

483511
//local variables for dalitz/2-body decay:
484512
Double_t pmass, epmass, realp_mass, e1, p1, e3, p3;
@@ -492,6 +520,8 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
492520
Int_t idPi0=111;
493521
Int_t idEta=221;
494522
Int_t idEtaPrime=331;
523+
Int_t idPsi2S=100443;
524+
Int_t idUpsilon=553;
495525

496526
// Get the particle masses of daughters
497527
Double_t emass, proton_mass, omass_pion, omass_eta, omass_gamma, omass_omega;
@@ -651,11 +681,9 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
651681

652682

653683
//-----------------------------------------------------------------------------//
654-
// Generate 2-body resonance decays: Rho/Omega/Phi/JPsi //
684+
// Generate 2-body resonance decays: Rho/Omega/Phi/JPsi/Psi2S/Upsilon //
655685
//-----------------------------------------------------------------------------//
656-
657-
if(((idpart==idEta&&fDecayToDimuon==1)||idpart==idRho||idpart==idOmega||idpart==idPhi||idpart==idJPsi)&&(idpartner==0)){
658-
686+
if(((idpart==idEta&&fDecayToDimuon==1)||idpart==idRho||idpart==idOmega||idpart==idPhi||idpart==idJPsi||idpart==idPsi2S||idpart==idUpsilon)&&(idpartner==0)){
659687

660688
//get the parent mass
661689
mp_res = pparent->M();
@@ -666,7 +694,6 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
666694
printf("ExodusDecayer: res into ee Decay kinematically impossible! \n");
667695
return;
668696
}
669-
670697
// Sample the electron pair mass from a histogram and set Polarization
671698
for( ;; ) {
672699
if(idpart==idEta&&fDecayToDimuon==1){
@@ -687,6 +714,12 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
687714
}else if(idpart==idJPsi){
688715
epmass_res = fEPMassJPsi->GetRandom();
689716
PolPar=0.;
717+
}else if(idpart==idPsi2S){
718+
epmass_res = fEPMassPsi2S->GetRandom();
719+
PolPar=0.;
720+
} else if(idpart==idUpsilon){
721+
epmass_res = fEPMassUpsilon->GetRandom();
722+
PolPar=0.;
690723
}else{ printf("ExodusDecayer: ERROR: Resonance mass G-S parametrization not found \n");
691724
return;
692725
}
@@ -757,6 +790,12 @@ void ExodusDecayer::Decay(Int_t idpart, TLorentzVector* pparent)
757790
}else if(idpart==idJPsi){
758791
fProducts_jpsi[0]=fProducts_res[0];
759792
fProducts_jpsi[1]=fProducts_res[1];
793+
}else if(idpart==idPsi2S){
794+
fProducts_psi2s[0]=fProducts_res[0];
795+
fProducts_psi2s[1]=fProducts_res[1];
796+
}else if(idpart==idUpsilon){
797+
fProducts_upsilon[0]=fProducts_res[0];
798+
fProducts_upsilon[1]=fProducts_res[1];
760799
}
761800

762801
}

‎GeneratorParam/ExodusDecayer.h‎

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -63,6 +63,8 @@ class ExodusDecayer : public TVirtualMCDecayer
6363
virtual TH1F* ElectronPairMassHistoPhiDalitz() {return fEPMassPhiDalitz;}
6464
virtual TH1F* ElectronPairMassHistoPhiDalitz_toPi0() {return fEPMassPhiDalitz_toPi0;}
6565
virtual TH1F* ElectronPairMassHistoJPsi() {return fEPMassJPsi;}
66+
virtual TH1F* ElectronPairMassHistoPsi2S() {return fEPMassPsi2S;}
67+
virtual TH1F* ElectronPairMassHistoUpsilon() {return fEPMassUpsilon;}
6668

6769
virtual const TLorentzVector* Products_pion() const {return fProducts_pion;}
6870
virtual const TLorentzVector* Products_eta() const {return fProducts_eta;}
@@ -76,6 +78,8 @@ class ExodusDecayer : public TVirtualMCDecayer
7678
virtual const TLorentzVector* Products_phi_dalitz() const {return fProducts_phi_dalitz;}
7779
virtual const TLorentzVector* Products_phi_dalitz_toPi0() const {return fProducts_phi_dalitz_toPi0;}
7880
virtual const TLorentzVector* Products_jpsi() const {return fProducts_jpsi;}
81+
virtual const TLorentzVector* Products_psi2s() const {return fProducts_psi2s;}
82+
virtual const TLorentzVector* Products_upsilon() const {return fProducts_upsilon;}
7983

8084
protected:
8185
// Histograms for electron pair mass
@@ -91,6 +95,8 @@ class ExodusDecayer : public TVirtualMCDecayer
9195
TH1F* fEPMassPhiDalitz;
9296
TH1F* fEPMassPhiDalitz_toPi0;
9397
TH1F* fEPMassJPsi;
98+
TH1F* fEPMassPsi2S;
99+
TH1F* fEPMassUpsilon;
94100

95101
TF1* fPol;
96102

@@ -107,6 +113,8 @@ class ExodusDecayer : public TVirtualMCDecayer
107113
TLorentzVector fProducts_phi_dalitz[3];
108114
TLorentzVector fProducts_phi_dalitz_toPi0[3];
109115
TLorentzVector fProducts_jpsi[2];
116+
TLorentzVector fProducts_psi2s[2];
117+
TLorentzVector fProducts_upsilon[2];
110118

111119

112120
Bool_t fInit;

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