A search for resonance decays to ν - jet in e + p scattering at HERA ZEUS
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چکیده
A study of the ν̄-jet mass spectrum in e+p → ν̄X events at center-of-mass energy 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7pb. The mass spectrum is in good agreement with that expected from Standard Model processes over the ν̄-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 → ν̄X 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 νq branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks. DESY 00-133 September 2000
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تاریخ انتشار 2000