Leptoquark production in ultrahigh-energy neutrino interactions revisited

Details Leptoquark production in ultrahigh-energy neutrino interactions revisited Leptoquark production in ultrahigh-energy neutrino interactions revisited

1997-07-11

arxiv.org/abs/hep-ph/9707328v3

Phys.Rev. D56 (1997) 7412-7415

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, 3 separate postscript figures. Added 1 reference plus discussion, updated another reference

Scientific paper

10.1103/PhysRevD.56.7412

The prospects for producing leptoquarks (LQs) in ultrahigh-energy (UHE) neutrino nucleon collisions are re-examined in the light of recent interpretations of HERA data in terms of leptoquark production. We update predictions for cross-sections for the production of first- and second-generation leptoquarks in UHE nu-N and nubar-N collisions including (i) recent experimental limits on masses and couplings from the LEP and TEVATRON colliders as well as rare processes, (ii) modern parton distributions, and (iii) radiative corrections to single leptoquark production. If the HERA events are due to an SU(2) doublet leptoquark which couples mainly to (e+,q) states, we argue that there are likely other LQ states which couple to neutrinos which are close in mass, due to constraints from precision electroweak measurements.

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