Skip to content

[PWGCF] fix eta extraction for FT0 detectors #13219

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
victor-gonzalez merged 1 commit into from
Oct 3, 2025
Merged

[PWGCF] fix eta extraction for FT0 detectors #13219

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions PWGCF/TwoParticleCorrelations/Tasks/longRangeDihadronCor.cxx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -164,6 +164,7 @@ struct LongRangeDihadronCor {

// FT0 geometry
o2::ft0::Geometry ft0Det;
const uint64_t ft0IndexA = 96;
std::vector<o2::detectors::AlignParam>* offsetFT0;
std::vector<float> cstFT0RelGain{};

Expand Down Expand Up @@ -367,6 +368,9 @@ struct LongRangeDihadronCor {
auto x = chPos.X() + (*offsetFT0)[i].getX();
auto y = chPos.Y() + (*offsetFT0)[i].getY();
auto z = chPos.Z() + (*offsetFT0)[i].getZ();
if (chno >= ft0IndexA) {
z = -z;
}
auto r = std::sqrt(x * x + y * y);
auto theta = std::atan2(r, z);
return -std::log(std::tan(0.5 * theta));
Expand Down
Loading