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feat: calculate PhPerp for SIDIS hadrons and dihadrons #304

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Oct 28, 2024
Merged

feat: calculate PhPerp for SIDIS hadrons and dihadrons #304

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db87228
feat: calculate PhPerp for SIDIS hadrons and dihadrons
c-dilks Oct 28, 2024
1202e27
fix: handle optional
c-dilks Oct 28, 2024
6c3f33e
feat: single hadron PhPerp
c-dilks Oct 28, 2024
88713dc
feat: validator
c-dilks Oct 28, 2024
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7 changes: 7 additions & 0 deletions src/iguana/algorithms/physics/DihadronKinematics/Algorithm.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@ namespace iguana::physics {
"pdg_b/I",
"Mh/D",
"z/D",
"PhPerp/D",
"MX/D",
"xF/D",
"phiH/D",
Expand All @@ -39,6 +40,7 @@ namespace iguana::physics {
i_pdg_b = result_schema.getEntryOrder("pdg_b");
i_Mh = result_schema.getEntryOrder("Mh");
i_z = result_schema.getEntryOrder("z");
i_PhPerp = result_schema.getEntryOrder("PhPerp");
i_MX = result_schema.getEntryOrder("MX");
i_xF = result_schema.getEntryOrder("xF");
i_phiH = result_schema.getEntryOrder("phiH");
Expand Down Expand Up @@ -135,6 +137,10 @@ namespace iguana::physics {
// calculate z
double z = p_target.Dot(p_Ph) / p_target.Dot(p_q);

// calculate PhPerp
auto opt_PhPerp = tools::RejectVector(p_Ph.Vect(), p_q.Vect());
double PhPerp = opt_PhPerp.has_value() ? opt_PhPerp.value().R() : tools::UNDEF;

// calculate Mh
double Mh = p_Ph.M();

Expand Down Expand Up @@ -190,6 +196,7 @@ namespace iguana::physics {
result_bank.putInt(i_pdg_b, dih_row, had_b.pdg);
result_bank.putDouble(i_Mh, dih_row, Mh);
result_bank.putDouble(i_z, dih_row, z);
result_bank.putDouble(i_PhPerp, dih_row, PhPerp);
result_bank.putDouble(i_MX, dih_row, MX);
result_bank.putDouble(i_xF, dih_row, xF);
result_bank.putDouble(i_phiH, dih_row, phiH);
Expand Down
3 changes: 3 additions & 0 deletions src/iguana/algorithms/physics/DihadronKinematics/Algorithm.h
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Expand Up @@ -21,6 +21,8 @@ namespace iguana::physics {
double Mh;
/// @brief @latex{z}: Momentum fraction of the fragmenting parton carried by the dihadron
double z;
/// @brief @latex{P_h^\perp}: transverse momentum of the dihadron in the @latex{\perp}-frame (transverse to @latex{\vec{q}})
double PhPerp;
/// @brief @latex{M_X(ehhX)}: Missing mass of the dihadron
double MX;
/// @brief @latex{x_F}: Feynman-x of the dihadron
Expand Down Expand Up @@ -95,6 +97,7 @@ namespace iguana::physics {
int i_pdg_b;
int i_Mh;
int i_z;
int i_PhPerp;
int i_MX;
int i_xF;
int i_phiH;
Expand Down
4 changes: 4 additions & 0 deletions src/iguana/algorithms/physics/DihadronKinematics/Validator.cc
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Expand Up @@ -41,6 +41,10 @@ namespace iguana::physics {
new TH1D("z_dist", "z", n_bins, 0, 1),
[](auto const& b, auto const r) { return b.getDouble("z", r); }
},
{
new TH1D("PhPerp_dist", "P_{h}^{{}^{#perp}}", n_bins, 0, 2),
[](auto const& b, auto const r) { return b.getDouble("PhPerp", r); }
},
{
new TH1D("MX_dist", "missing mass M_{X} [GeV];", n_bins, 0, 4),
[](auto const& b, auto const r) { return b.getDouble("MX", r); }
Expand Down
36 changes: 22 additions & 14 deletions src/iguana/algorithms/physics/SingleHadronKinematics/Algorithm.cc
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Expand Up @@ -23,6 +23,7 @@ namespace iguana::physics {
"pindex/S",
"pdg/I",
"z/D",
"PhPerp/D",
"MX/D",
"xF/D",
"phiH/D",
Expand All @@ -33,6 +34,7 @@ namespace iguana::physics {
i_pindex = result_schema.getEntryOrder("pindex");
i_pdg = result_schema.getEntryOrder("pdg");
i_z = result_schema.getEntryOrder("z");
i_PhPerp = result_schema.getEntryOrder("PhPerp");
i_MX = result_schema.getEntryOrder("MX");
i_xF = result_schema.getEntryOrder("xF");
i_phiH = result_schema.getEntryOrder("phiH");
Expand Down Expand Up @@ -112,6 +114,10 @@ namespace iguana::physics {
// calculate z
double z = p_target.Dot(p_Ph) / p_target.Dot(p_q);

// calculate PhPerp
auto opt_PhPerp = tools::RejectVector(p_Ph.Vect(), p_q.Vect());
double PhPerp = opt_PhPerp.has_value() ? opt_PhPerp.value().R() : tools::UNDEF;

// calculate xi
double xi = p_q.Dot(p_Ph) / p_target.Dot(p_q);

Expand All @@ -132,23 +138,25 @@ namespace iguana::physics {
result_bank_rowlist.push_back(row);

// fill the bank
result_bank.putShort(i_pindex, row, static_cast<int16_t>(row));
result_bank.putInt(i_pdg, row, pdg);
result_bank.putDouble(i_z, row, z);
result_bank.putDouble(i_MX, row, MX);
result_bank.putDouble(i_xF, row, xF);
result_bank.putDouble(i_phiH, row, phiH);
result_bank.putDouble(i_xi, row, xi);
result_bank.putShort(i_pindex, row, static_cast<int16_t>(row));
result_bank.putInt(i_pdg, row, pdg);
result_bank.putDouble(i_z, row, z);
result_bank.putDouble(i_PhPerp, row, PhPerp);
result_bank.putDouble(i_MX, row, MX);
result_bank.putDouble(i_xF, row, xF);
result_bank.putDouble(i_phiH, row, phiH);
result_bank.putDouble(i_xi, row, xi);
}
else {
// zero the row
result_bank.putShort(i_pindex, row, static_cast<int16_t>(row));
result_bank.putInt(i_pdg, row, pdg);
result_bank.putDouble(i_z, row, 0);
result_bank.putDouble(i_MX, row, 0);
result_bank.putDouble(i_xF, row, 0);
result_bank.putDouble(i_phiH, row, 0);
result_bank.putDouble(i_xi, row, 0);
result_bank.putShort(i_pindex, row, static_cast<int16_t>(row));
result_bank.putInt(i_pdg, row, pdg);
result_bank.putDouble(i_z, row, 0);
result_bank.putDouble(i_PhPerp, row, 0);
result_bank.putDouble(i_MX, row, 0);
result_bank.putDouble(i_xF, row, 0);
result_bank.putDouble(i_phiH, row, 0);
result_bank.putDouble(i_xi, row, 0);
}
}

Expand Down
3 changes: 3 additions & 0 deletions src/iguana/algorithms/physics/SingleHadronKinematics/Algorithm.h
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Expand Up @@ -14,6 +14,8 @@ namespace iguana::physics {
int pdg;
/// @brief @latex{z}: Momentum fraction of the fragmenting parton carried by the hadron
double z;
/// @brief @latex{P_h^\perp}: transverse momentum of the hadron in the @latex{\perp}-frame (transverse to @latex{\vec{q}})
double PhPerp;
/// @brief @latex{M_X(ehX)}: Missing mass of the hadron
double MX;
/// @brief @latex{x_F}: Feynman-x of the hadron
Expand Down Expand Up @@ -66,6 +68,7 @@ namespace iguana::physics {
int i_pindex;
int i_pdg;
int i_z;
int i_PhPerp;
int i_MX;
int i_xF;
int i_phiH;
Expand Down
4 changes: 4 additions & 0 deletions src/iguana/algorithms/physics/SingleHadronKinematics/Validator.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,10 @@ namespace iguana::physics {
new TH1D("z_dist", "z", n_bins, 0, 1),
[](auto const& b, auto const r) { return b.getDouble("z", r); }
},
{
new TH1D("PhPerp_dist", "P_{h}^{{}^{#perp}}", n_bins, 0, 2),
[](auto const& b, auto const r) { return b.getDouble("PhPerp", r); }
},
{
new TH1D("MX_dist", "missing mass M_{X} [GeV];", n_bins, 0, 4),
[](auto const& b, auto const r) { return b.getDouble("MX", r); }
Expand Down
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