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[PWGHF/D2H] removing di-quark contribution from non-prompt Dstar#16273

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fgrosa merged 1 commit into
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deependra170598:reject-di-quark-contrib
May 17, 2026
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[PWGHF/D2H] removing di-quark contribution from non-prompt Dstar#16273
fgrosa merged 1 commit into
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deependra170598:reject-di-quark-contrib

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@deependra170598
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Hi @fgrosa, @xinyepeng, @zhangbiao-phy, @stefanopolitano, and @jessica

I am making changes in D2H task in order to remove contribution from beauty diquark into non-prompt D*.

The reference for these changes is taken from the line in polarisation task.

I have the following doubt...
At the line, we have

originDstar = RecoDecay::getCharmHadronOrigin(mcParticles, particleDstar, false, &idxBhadMothers);

argument for const bool searchUpToQuark is set to false. So, is it searching up to di-quark level? Or Can it not assign particle as Prompt (=1) if beauty hadron mother not found or assign None (=0)?

Thanks & let me know if further modification is required.

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@fgrosa fgrosa merged commit fede2e1 into AliceO2Group:master May 17, 2026
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fgrosa commented May 17, 2026

Hi @fgrosa, @xinyepeng, @zhangbiao-phy, @stefanopolitano, and @jessica

I am making changes in D2H task in order to remove contribution from beauty diquark into non-prompt D*.

The reference for these changes is taken from the line in polarisation task.

I have the following doubt... At the line, we have

originDstar = RecoDecay::getCharmHadronOrigin(mcParticles, particleDstar, false, &idxBhadMothers);

argument for const bool searchUpToQuark is set to false. So, is it searching up to di-quark level? Or Can it not assign particle as Prompt (=1) if beauty hadron mother not found or assign None (=0)?

Thanks & let me know if further modification is required.

Hi @deependra170598 the argument searchUpToQuark=false is OK, since diquark states in our code are tagged as hadrons, and not quarks (because their PDG code in the end is similar to the one of hadrons).

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