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arXiv · 2504.03949

Fragmentation functions for axial-vector heavy tetraquarks: A TQ4Q1.1 update

Francesco Giovanni Celiberto
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Abstract

We present and discuss the release of novel sets of collinear, variable-flavor-number-scheme fragmentation functions for axial-vector, fully heavy $T_{4c}(1^{+-})$ and $T_{4b}(1^{+-})$ tetraquarks. Working within the single-parton approximation at leading power and employing nonrelativistic QCD factorization adapted for tetraquark Fock states, we model the initial-scale fragmentation input using a recent calculation for the constituent heavy-quark channel. Standard DGLAP evolution is then applied, ensuring consistent implementation of evolution thresholds. To support phenomenology, we investigate NLL/NLO$^+$ rates for tetraquark-jet systems at the HL-LHC and FCC from (sym)JETHAD. This study further integrates exotic matter explorations with precision QCD calculations.

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Francesco Giovanni Celiberto. 2025-04-04. Fragmentation functions for axial-vector heavy tetraquarks: A TQ4Q1.1 update. https://doi.org/10.1103/ympl-ly2l

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