RT Journal Article
T1 Ensuring that toponium is glued, not nailed
A1 Llanes Estrada, Felipe José
AB Hints of toponium might be incipient in LHC data, as given the vast numbers of t quarks produced, some survive on the exponential-decay tail long enough to fasten together. I here discuss a few differences between the standard Quantum Chromodynamics (QCD) binding (the “glue”) and exotic short-range binding (the “nail”). If the binding energy below threshold reaches the 3 GeV range the peak of the is distinct enough that a cross-section dip should be apparent in the line shape, should there only be one isolated resonance, but is filled by the excited QCD states adding about a pbarn to the cross section of production. Their effect for smaller binding energies is a tenuous increase in the cross section. A new-physics short-range interaction, on the other hand, yields a larger cross-section for equal binding energy (or hardly a visible bound state for similar cross section). This is due to its larger relative wavefunction at small distances. Finally, assuming that standard QCD plays out, I comment on what size of constraints on new-physics coefficients one can expect at given precision.
PB Elsevier
SN 0370-2693
YR 2025
FD 2025-07
LK https://hdl.handle.net/20.500.14352/122549
UL https://hdl.handle.net/20.500.14352/122549
LA eng
NO Llanes-Estrada, F.J. Ensuring That Toponium Is Glued, Not Nailed. Physics Letters B 2025, 866, 139510, doi:10.1016/j.physletb.2025.139510
NO PRX23/00225
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Agencia Estatal de Investigación (España)
DS Docta Complutense
RD 17 dic 2025