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[PWGEM/Dilepton] add possibility to use abs in dileptonPolarization.cxx #13996

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Merged
dsekihat merged 1 commit into from
Nov 27, 2025
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[PWGEM/Dilepton] add possibility to use abs in dileptonPolarization.cxx #13996

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26 changes: 23 additions & 3 deletions PWGEM/Dilepton/Tasks/dileptonPolarization.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@
ConfigurableAxis ConfEPBins{"ConfEPBins", {1, -M_PI / 2, +M_PI / 2}, "Mixing bins - event plane angle"};
ConfigurableAxis ConfOccupancyBins{"ConfOccupancyBins", {VARIABLE_WIDTH, -1, 1e+10}, "Mixing bins - occupancy"};
Configurable<int> cfgPolarizationFrame{"cfgPolarizationFrame", 0, "frame of polarization. 0:CS, 1:HX, else:FATAL"};
Configurable<bool> cfgUseAbs{"cfgUseAbs", false, "flag to use absolute value for cos_theta and phi"}; // this is to increase statistics per bin.

ConfigurableAxis ConfMllBins{"ConfMllBins", {VARIABLE_WIDTH, 0.00, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.60, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.70, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1.00, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, 1.30, 1.40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00, 2.10, 2.20, 2.30, 2.40, 2.50, 2.60, 2.70, 2.75, 2.80, 2.85, 2.90, 2.95, 3.00, 3.05, 3.10, 3.15, 3.20, 3.25, 3.30, 3.35, 3.40, 3.45, 3.50, 3.55, 3.60, 3.65, 3.70, 3.75, 3.80, 3.85, 3.90, 3.95, 4.00, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.00, 8.10, 8.20, 8.30, 8.40, 8.50, 8.60, 8.70, 8.80, 8.90, 9.00, 9.10, 9.20, 9.30, 9.40, 9.50, 9.60, 9.70, 9.80, 9.90, 10.00, 10.10, 10.20, 10.30, 10.40, 10.50, 10.60, 10.70, 10.80, 10.90, 11.00, 11.1, 11.2, 11.3, 11.4, 11.50, 11.6, 11.7, 11.8, 11.9, 12.0}, "mll bins for output histograms"};
ConfigurableAxis ConfPtllBins{"ConfPtllBins", {VARIABLE_WIDTH, 0.00, 0.10, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, 1.00, 1.10, 1.20, 1.30, 1.40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00, 2.50, 3.00, 3.50, 4.00, 4.50, 5.00, 6.00, 7.00, 8.00, 9.00, 10.00}, "pTll bins for output histograms"};
Expand Down Expand Up @@ -175,6 +176,8 @@
} else if (cfgPairType.value == static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDimuon)) {
leptonM1 = o2::constants::physics::MassMuon;
leptonM2 = o2::constants::physics::MassMuon;
} else {
LOG(fatal) << "Please select either dielectron or dimuon";
}

if (ConfVtxBins.value[0] == VARIABLE_WIDTH) {
Expand Down Expand Up @@ -488,6 +491,11 @@
o2::math_utils::bringToPMPi(phiPol);
float quadmom = (3.f * std::pow(cos_thetaPol, 2) - 1.f) / 2.f;

if (cfgUseAbs) {
cos_thetaPol = std::fabs(cos_thetaPol);
phiPol = std::fabs(phiPol);
}

if (dilepton.sign1() * dilepton.sign2() < 0) { // ULS
fRegistry.fill(HIST("Pair/") + HIST(event_pair_types[ev_id]) + HIST("uls/hs"), v12.M(), v12.Pt(), pair_dca, v12.Rapidity(), cos_thetaPol, phiPol, quadmom, weight);
} else if (dilepton.sign1() > 0 && dilepton.sign2() > 0) { // LS++
Expand All @@ -500,21 +508,21 @@
int mbin = lower_bound(mll_bin_edges.begin(), mll_bin_edges.end(), v12.M()) - mll_bin_edges.begin() - 1;
if (mbin < 0) {
mbin = 0;
} else if (static_cast<int>(mll_bin_edges.size()) - 2 < mbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
mbin = static_cast<int>(mll_bin_edges.size()) - 2;
}

int ptbin = lower_bound(ptll_bin_edges.begin(), ptll_bin_edges.end(), v12.Pt()) - ptll_bin_edges.begin() - 1;
if (ptbin < 0) {
ptbin = 0;
} else if (static_cast<int>(ptll_bin_edges.size()) - 2 < ptbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
ptbin = static_cast<int>(ptll_bin_edges.size()) - 2;
}

int etabin = lower_bound(etall_bin_edges.begin(), etall_bin_edges.end(), v12.Eta()) - etall_bin_edges.begin() - 1;
if (etabin < 0) {
etabin = 0;
} else if (static_cast<int>(etall_bin_edges.size()) - 2 < etabin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
etabin = static_cast<int>(etall_bin_edges.size()) - 2;
}

Expand All @@ -523,7 +531,7 @@
int phibin = lower_bound(phill_bin_edges.begin(), phill_bin_edges.end(), phi12) - phill_bin_edges.begin() - 1;
if (phibin < 0) {
phibin = 0;
} else if (static_cast<int>(phill_bin_edges.size()) - 2 < phibin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
phibin = static_cast<int>(phill_bin_edges.size()) - 2;
}

Expand Down Expand Up @@ -618,21 +626,21 @@
int zbin = lower_bound(zvtx_bin_edges.begin(), zvtx_bin_edges.end(), collision.posZ()) - zvtx_bin_edges.begin() - 1;
if (zbin < 0) {
zbin = 0;
} else if (static_cast<int>(zvtx_bin_edges.size()) - 2 < zbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
zbin = static_cast<int>(zvtx_bin_edges.size()) - 2;
}

int centbin = lower_bound(cent_bin_edges.begin(), cent_bin_edges.end(), centrality) - cent_bin_edges.begin() - 1;
if (centbin < 0) {
centbin = 0;
} else if (static_cast<int>(cent_bin_edges.size()) - 2 < centbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
centbin = static_cast<int>(cent_bin_edges.size()) - 2;
}

int epbin = lower_bound(ep_bin_edges.begin(), ep_bin_edges.end(), ep2) - ep_bin_edges.begin() - 1;
if (epbin < 0) {
epbin = 0;
} else if (static_cast<int>(ep_bin_edges.size()) - 2 < epbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
epbin = static_cast<int>(ep_bin_edges.size()) - 2;
}

Expand All @@ -647,7 +655,7 @@

if (occbin < 0) {
occbin = 0;
} else if (static_cast<int>(occ_bin_edges.size()) - 2 < occbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
occbin = static_cast<int>(occ_bin_edges.size()) - 2;
}

Expand Down Expand Up @@ -682,14 +690,14 @@
int mbin = lower_bound(mll_bin_edges.begin(), mll_bin_edges.end(), empair1.mass()) - mll_bin_edges.begin() - 1;
if (mbin < 0) {
mbin = 0;
} else if (static_cast<int>(mll_bin_edges.size()) - 2 < mbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
mbin = static_cast<int>(mll_bin_edges.size()) - 2;
}

int ptbin = lower_bound(ptll_bin_edges.begin(), ptll_bin_edges.end(), empair1.pt()) - ptll_bin_edges.begin() - 1;
if (ptbin < 0) {
ptbin = 0;
} else if (static_cast<int>(ptll_bin_edges.size()) - 2 < ptbin) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
ptbin = static_cast<int>(ptll_bin_edges.size()) - 2;
}

Expand All @@ -711,14 +719,18 @@
auto empair2 = std::get<4>(pair2);
auto arrM = std::array<float, 4>{static_cast<float>(empair2.px()), static_cast<float>(empair2.py()), static_cast<float>(empair2.pz()), static_cast<float>(empair2.mass())};

float cos_thetaPol = 999, phiPol = 999.f;
float cos_thetaPol = 999.f, phiPol = 999.f;
if (cfgPolarizationFrame == 0) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleCS(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
} else if (cfgPolarizationFrame == 1) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleHX(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
}
o2::math_utils::bringToPMPi(phiPol);
float quadmom = (3.f * std::pow(cos_thetaPol, 2) - 1.f) / 2.f;
if (cfgUseAbs) {
cos_thetaPol = std::fabs(cos_thetaPol);
phiPol = std::fabs(phiPol);
}
fRegistry.fill(HIST("Pair/mix/uls/hs"), empair1.mass(), empair1.pt(), empair1.getPairDCA(), empair1.rapidity(), cos_thetaPol, phiPol, quadmom, weight);
}
} // end of ULS
Expand Down Expand Up @@ -760,14 +772,18 @@
auto empair2 = std::get<4>(pair2);
auto arrM = std::array<float, 4>{static_cast<float>(empair2.px()), static_cast<float>(empair2.py()), static_cast<float>(empair2.pz()), static_cast<float>(empair2.mass())};

float cos_thetaPol = 999, phiPol = 999.f;
float cos_thetaPol = 999.f, phiPol = 999.f;
if (cfgPolarizationFrame == 0) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleCS(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
} else if (cfgPolarizationFrame == 1) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleHX(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
}
o2::math_utils::bringToPMPi(phiPol);
float quadmom = (3.f * std::pow(cos_thetaPol, 2) - 1.f) / 2.f;
if (cfgUseAbs) {
cos_thetaPol = std::fabs(cos_thetaPol);
phiPol = std::fabs(phiPol);
}
fRegistry.fill(HIST("Pair/mix/lspp/hs"), empair1.mass(), empair1.pt(), empair1.getPairDCA(), empair1.rapidity(), cos_thetaPol, phiPol, quadmom, weight);
}
} // end of LS++
Expand Down Expand Up @@ -809,14 +825,18 @@
auto empair2 = std::get<4>(pair2);
auto arrM = std::array<float, 4>{static_cast<float>(empair2.px()), static_cast<float>(empair2.py()), static_cast<float>(empair2.pz()), static_cast<float>(empair2.mass())};

float cos_thetaPol = 999, phiPol = 999.f;
float cos_thetaPol = 999.f, phiPol = 999.f;
if (cfgPolarizationFrame == 0) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleCS(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
} else if (cfgPolarizationFrame == 1) {
o2::aod::pwgem::dilepton::utils::pairutil::getAngleHX(arrM, arrD, beamE1, beamE2, beamP1, beamP2, cos_thetaPol, phiPol);
}
o2::math_utils::bringToPMPi(phiPol);
float quadmom = (3.f * std::pow(cos_thetaPol, 2) - 1.f) / 2.f;
if (cfgUseAbs) {
cos_thetaPol = std::fabs(cos_thetaPol);
phiPol = std::fabs(phiPol);
}
fRegistry.fill(HIST("Pair/mix/lsmm/hs"), empair1.mass(), empair1.pt(), empair1.getPairDCA(), empair1.rapidity(), cos_thetaPol, phiPol, quadmom, weight);
}
} // end of LS--
Expand Down
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