TY - JOUR UR - http://dx.doi.org/10.1103/PhysRevD.63.052002 TI - Search for resonance decays to a ?? plus jet in e+p scattering at DESY HERA N1 - © 2001 The American Physical Society SN - 0556-2821 ID - discovery132601 AV - public JF - Physical Review D N2 - A study of the ?? -jet mass spectrum in e+p??? X 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 ?? -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??? 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 ?? q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks IS - 052002 Y1 - 2007/// VL - 63 A1 - Butterworth, J A1 - Sutton, M A1 - Wing, MZEUSC ER -