Fully Heavy Pentaquarks with JETHAD: A High-Energy Viewpoint
TLDR
This paper studies fully heavy pentaquark fragmentation in high-energy collisions, releasing new PQ5Q1.0 functions and using JETHAD for production rates.
Key contributions
- Releases complete PQ5Q1.0 fragmentation functions ($P_{5c}$, $P_{5b}$) for fully heavy pentaquarks.
- Introduces improved initial-scale input for heavy-quark fragmentation channels.
- Describes direct multicharm state formation and diquark-antiquark-diquark hadronization.
- Computes NLL/NLO$^+$ production rates of pentaquark-plus-jet systems using JETHAD for HL-LHC and FCC.
Why it matters
This study advances our understanding of exotic matter by providing new fragmentation functions and a robust framework. It offers crucial predictions for future high-energy colliders like HL-LHC and FCC, bridging hadronic structure and precision QCD.
Original Abstract
We examine the leading-power fragmentation of fully heavy pentaquarks in high-energy hadronic collisions. To this end, we complete the release of the hadron-structure-oriented PQ5Q1.0 fragmentation functions, by discussing the $P_{5c}$ set and delivering the $P_{5b}$ one. These functions incorporate an improved computation of the initial-scale input for the constituent heavy-quark fragmentation channel, making them particularly suitable for describing both the direct formation of a compact multicharm state and the hadronization from a diquark-antiquark-diquark configuration. For phenomenological applications, we employ the data-validated (sym)JETHAD framework to compute and analyze NLL/NLO$^+$ semi-inclusive production rates of pentaquark-plus-jet systems at the upcoming HL-LHC and the future FCC. This study marks a further step toward connecting hadronic structure, precision QCD, and the emerging physics of exotic matter.
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