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  • Letter
  • Open Access

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

Francesco Giovanni Celiberto*

  • *Contact author: francesco.celiberto@uah.es
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Phys. Rev. D 111, L111501 – Published 3 June, 2025

DOI: https://doi.org/10.1103/ympl-ly2l

Abstract

We present and discuss the release of novel sets of collinear, variable-flavor-number-scheme fragmentation functions for axial-vector, fully heavy T4c(1+−) and T4b(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 Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution is then applied, ensuring consistent implementation of evolution thresholds. To support phenomenology, we investigate NLL/NLO+ rates for tetraquark-jet systems at the High-Luminosity LHC and Future Circular Collider from (sym)jethad. This study further integrates exotic matter explorations with precision QCD calculations.

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Phys. Rev. D 111, L111501– Published 3 June, 2025
  • Received 11 April 2025
  • Accepted 15 May 2025
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