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SUMMARY:Quarkonium fragmentation from HF-NRevo: A low-to-high-energy appro
 ach - Francesco Giovanni Celiberto (UAH\, Madrid)
DTSTART:20241025T150000Z
DTEND:20241025T160000Z
UID:TALK220834@talks.cam.ac.uk
CONTACT:Terry Generet
DESCRIPTION:The study of formation mechanisms of heavy-quarkonium states\,
  the so-called “hydrogen atoms” of QCD\, stands as a valuable tool for
  unveiling core aspects of the strong force. Quarkonium physics bridges pr
 ecision studies of perturbative QCD and explorations of the proton structu
 re. In this seminar\, we present progress on the Heavy-Flavor Non-Relativi
 stic evolution (HF-NRevo) framework\, a novel approach\nfor addressing qua
 rkonium production within the collinear fragmentation approximation. We dr
 aw on next-to-leading order Non-Relativistic-QCD (NRQCD) calculations for 
 parton fragmentation channels into both vector and pseudoscalar quarkonia\
 , which we use as proxies for initial-scale inputs. This results in the co
 nstruction of a complete set of variable-flavour number-scheme fragmentati
 on functions\,\nnamed NRFF1.0\, which are derived through standard DGLAP e
 volution. Statistical errors are assessed using a Monte Carlo\, replica-li
 ke approach that also accounts for Missing Higher-Order Uncertainties (MHO
 Us). Looking ahead\, we will also discuss the potential of using HF-NRevo 
 to address quarkonium in-jet fragmentation.
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
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