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A search for resonance decays to antineutrino-jet in e^+p scattering at HERA

ZEUS Collaboration·J. Breitweg
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Abstract

A study of the antineutrino-jet mass spectrum in e^+p -> antineutrino+X events at center-of-mass energy 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb^-1. The mass spectrum is in good agreement with that expected from Standard Model processes over the antineutrino -jet mass range studied. No significant excess attributable to the decay of a narrow resonance is observed. By using both e^+p -> e^+ X and e^+p -> antineutrino X data, mass-dependent limits are set on the s-channel production of scalar and vector resonant states. Couplings to first-generation quarks are considered and limits are presented as a function of the e^+q and antineutrino-q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks.

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ZEUS Collaboration, J. Breitweg. 2000-09-27. A search for resonance decays to antineutrino-jet in e^+p scattering at HERA. https://doi.org/10.1103/physrevd.63.052002

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