[PWGHF] Adding D0/Lc analysis task

[laszlogyulai]

Adding a new analysis task for calculating the D0/Lambda_c yield ratio as a function of flattenicity

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 0 warnings, 🔕 0 disabled

[laszlogyulai]

Dear codeowners,

Is it possible to overcome the "magic number" errors in the O2 linter / O2 linter (pull_request_target) check? In my opinion it would unnecessarily complicate the existing code. You can see an example of such a solution in the PWGLF/Tasks/GlobalEventProperties/flattenicityPikp.cxx file (lines 1814-1908)

[vkucera]

Dear codeowners,

Is it possible to overcome the "magic number" errors in the O2 linter / O2 linter (pull_request_target) check? In my opinion it would unnecessarily complicate the existing code. You can see an example of such a solution in the PWGLF/Tasks/GlobalEventProperties/flattenicityPikp.cxx file (lines 1814-1908)

The way to "overcome" it is to write it in a better way. From what I can see, you map some number to other numbers. So how about using a map or an array, for example?

[laszlogyulai]

Dear code owners,
Can you tell me if anything is needed from my side at this point?

You have not fixed the warnings.

Dear Vit,

From my side, I see that all checks are successful, and the only ones that are pending are awaiting a code owner approval.

[vkucera]

Dear Vit,

From my side, I see that all checks are successful, and the only ones that are pending are awaiting a code owner approval.

Please look at the O2 linter result at the top.

[laszlogyulai]

Dear Vit,
From my side, I see that all checks are successful, and the only ones that are pending are awaiting a code owner approval.

Please look at the O2 linter result at the top.

Is everything fine now?

[vkucera]

Dear Vit,
From my side, I see that all checks are successful, and the only ones that are pending are awaiting a code owner approval.

Please look at the O2 linter result at the top.

Is everything fine now?

Looks good to me so far. Let's see the build results when the PR gets approved by the D2H coordinators.

[zhangbiao-phy]

Hi @laszlogyulai, Thanks! Looks good to me!

[alibuild]

Error while checking build/O2Physics/code-check for 6629a3a at 2026-09-21 05:56:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc10_x86-64-slc10_x86-64/0/PWGHF/Utils/utilsEvSelHf.h:408:36: error: 'const struct o2::soa::Table<o2::aod::Hash<519320931>, o2::aod::Hash<1837103245>, o2::aod::Hash<519320931>, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >::TableIteratorBase<o2::soa::DefaultIndexPolicy, o2::soa::Join<o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >' has no member named 'isInelGt0'
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/o2 for 6629a3a at 2026-09-21 07:49:

## sw/BUILD/VecGeom-latest/log
CMake Error at /container/bits/sw/BUILD/4b902089e8ae3e1235b16cffffe5b41003a490dd/VecGeom/buildExternals/VecCore-0.8.0/build/external/stamp/VecCore-0.8.0-configure-RELWITHDEBINFO.cmake:49 (message):
ninja: build stopped: subcommand failed.
CMake Error at cmake/modules/BuiltinVecCore.cmake:36 (add_custom_command):
CMake Error at CMakeLists.txt:222 (find_package):

Full log here.

[alibuild]

Error while checking build/O2Physics/staging for 6629a3a at 2026-09-21 08:09:

## sw/BUILD/O2-latest/log
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:75:56
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:83:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:84:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/ECal/base/src/ECalBaseLinkDef.h:19:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/RICH/base/src/RICHBaseLinkDef.h:18:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/MID/base/src/MI3BaseLinkDef.h:18:47


## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:127:25: error: unused variable 'doprocess' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:560:20: error: unused variable 'chi2PCA' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:482:19: error: unused variable 'flatCalibrated' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:469:39: error: unused parameter 'bcs' [-Werror=unused-parameter]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:470:42: error: unused parameter 'tracks' [-Werror=unused-parameter]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:642:19: error: unused variable 'flatCalibrated' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:740:17: error: unused variable 'minItsClustersOfProngs' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:741:17: error: unused variable 'minTpcCrossedRowsOfProngs' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:873:22: error: unused variable 'ptProng0' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:874:22: error: unused variable 'ptProng1' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:875:22: error: unused variable 'ptProng2' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:876:22: error: unused variable 'decayLength' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:877:22: error: unused variable 'chi2PCA' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:878:22: error: unused variable 'cpa' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:855:19: error: unused variable 'flatCalibrated' [-Werror=unused-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/Utils/utilsEvSelHf.h:408:36: error: 'const struct o2::soa::Table<o2::aod::Hash<519320931>, o2::aod::Hash<1837103245>, o2::aod::Hash<519320931>, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >::TableIteratorBase<o2::soa::DefaultIndexPolicy, o2::soa::Join<o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >' has no member named 'isInelGt0'
ninja: build stopped: subcommand failed.

Full log here.

[laszlogyulai]

Hi @zhangbiao-phy , could you check if the corrections are fine?

[alibuild]

Error while checking build/O2Physics/staging for c8d2457 at 2026-09-21 14:55:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:643:12: error: variable 'trackNeg' set but not used [-Werror=unused-but-set-variable]
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/Utils/utilsEvSelHf.h:408:36: error: 'const struct o2::soa::Table<o2::aod::Hash<519320931>, o2::aod::Hash<1837103245>, o2::aod::Hash<519320931>, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >::TableIteratorBase<o2::soa::DefaultIndexPolicy, o2::soa::Join<o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >' has no member named 'isInelGt0'
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for c8d2457 at 2026-09-21 14:55:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc10_x86-64-slc10_x86-64/0/PWGHF/Utils/utilsEvSelHf.h:408:36: error: 'const struct o2::soa::Table<o2::aod::Hash<519320931>, o2::aod::Hash<1837103245>, o2::aod::Hash<519320931>, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >::TableIteratorBase<o2::soa::DefaultIndexPolicy, o2::soa::Join<o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >' has no member named 'isInelGt0'
ninja: build stopped: subcommand failed.

Full log here.

[vkucera]

@laszlogyulai Please first compile and test your changes locally before updating the PR.

[laszlogyulai]

@laszlogyulai Please first compile and test your changes locally before updating the PR.

Sure thing. The current (and previous) versions of the code compile and run smoothly on my local machine. Therefore, I am trying to solve the errors by looking at the output logs here.

[vkucera]

@laszlogyulai Please first compile and test your changes locally before updating the PR.

Sure thing. The current (and previous) versions of the code compile and run smoothly on my local machine. Therefore, I am trying to solve the errors by looking at the output logs here.

That's not the right approach. Your branch is obsolete. You should instead update it and re-test everything with the latest O2Physics.

[alibuild]

Error while checking build/O2Physics/o2 for c8d2457 at 2026-09-21 17:33:

## sw/BUILD/O2-latest/log
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:75:56
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:83:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/TPC/base/src/TPCBaseLinkDef.h:84:135
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/ECal/base/src/ECalBaseLinkDef.h:19:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/RICH/base/src/RICHBaseLinkDef.h:18:48
Error: missing ; at end of rule at /sw/SOURCES/O2/daily-20260921-0000/daily-20260921-0000/Detectors/Upgrades/ALICE3/MID/base/src/MI3BaseLinkDef.h:18:47


## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc10_x86-64-slc10_x86-64/0/PWGHF/D2H/Tasks/taskFlattenicityD0Lc.cxx:643:12: error: variable 'trackNeg' set but not used [-Werror=unused-but-set-variable]
/sw/SOURCES/O2Physics/slc10_x86-64-slc10_x86-64/0/PWGHF/Utils/utilsEvSelHf.h:408:36: error: 'const struct o2::soa::Table<o2::aod::Hash<519320931>, o2::aod::Hash<1837103245>, o2::aod::Hash<519320931>, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >::TableIteratorBase<o2::soa::DefaultIndexPolicy, o2::soa::Join<o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >, o2::soa::Table<o2::aod::Hash<1373761118>, o2::aod::Hash<4191360419>, o2::aod::Hash<2286545062> >, o2::soa::Table<o2::aod::Hash<254116537>, o2::aod::Hash<3484684091>, o2::aod::Hash<2286545062> > >' has no member named 'isInelGt0'
ninja: build stopped: subcommand failed.

Full log here.