Speaker
Description
We present a phenomenological study of exotic fully heavy tetraquark production based on the TQ4Q1.1 set of collinear, variable-flavor-number-scheme fragmentation functions. Our analysis covers scalar ($0^{++}$), axial-vector ($1^{+-}$), and tensor ($2^{++}$) configurations, incorporating single-parton fragmentation at leading power within a nonrelativistic QCD factorization framework. Short-distance inputs for both gluon- and heavy-quark-initiated channels are updated, and a threshold-consistent DGLAP evolution is implemented via HF-NRevo. Particular attention is given to the propagation of uncertainties from the color-composite long-distance matrix elements driving hadronization. We discuss phenomenological implications for LHC kinematics, with emphasis on high-energy resummed observables and their interplay with precision QCD and exotic-hadron searches.
