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Search for resonance decays to a ν ¯ plus jet in e + p scattering at DESY HERA
Journal article   Peer reviewed

Search for resonance decays to a ν ¯ plus jet in e + p scattering at DESY HERA

ZEUS Collaboration, J. Repond and U. Mallik
Physical review. D, Particles and fields, Vol.63(5), 052002
02/2001
DOI: 10.1103/PhysRevD.63.052002

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Abstract

A study of the v̄-jet mass spectrum in e+p→v̄X events at a center-of-mass energy 300 GeV has been performed with the ZEUS detector at the HERA collider at DESY 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 v̄-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-vX 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 v̄q branching ratios. These limits are used to constrain the production of leptoquarks and A-parity violating squarks.

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