2 research outputs found
Lepto-mesons, Leptoquarkonium and the QCD Potential
We consider bound states of heavy leptoquark-antiquark pairs (lepto-mesons)
as well as leptoquark-antileptoquark pairs (leptoquarkonium). Unlike the
situation for top quarks, leptoquarks (if they exist) may live long enough for
these hadrons to form. We study the spectra and decay widths of these states in
the context of a nonrelativistic potential model which matches the recently
calculated two-loop QCD potential at short distances to a successful
phenomenological quarkonium potential at intermediate distances. We also
compute the expected number of events for these states at future colliders.Comment: 12 pages, 1 figure, 3 tables, plain TeX, requires harvmac. References
updated and minor clarifications made. To appear in Physics Letters
Resonant Bound State Production at e- e- Colliders
Observation of a sequence of resonances at an e-e- collider would suggest
bound states of strongly coupled constituents carrying lepton number. Obvious
candidates for these exotic constituents are leptoquarks and leptogluons. We
show that under reasonable assumptions, the existence of one leptogluon flavor
of appropriate mass can give rise to sizeable ``leptoglueball'' production
rates and observable resonance peaks. In contrast, one needs two leptoquark
flavors in order to produce the analogous ``leptoquarkonium'' states. Moreover,
cross-generational leptoquark couplings are necessary to give observable event
rates in many cases, and leptoquarkonium mass splittings are too small to
resolve with realistic beam energy resolutions.Comment: 8 pages, 1 table, plain TeX, requires harvmac. Brief comparison to
leptoglueball production at e+e- colliders added. Other minor changes. To
appear in Physics Letters