@article{discovery132601, year = {2007}, title = {Search for resonance decays to a {\ensuremath{\nu}}? plus jet in e+p scattering at DESY HERA}, volume = {63}, note = {{\copyright} 2001 The American Physical Society}, number = {052002}, journal = {Physical Review D}, author = {Butterworth, J and Sutton, M and Wing, MZEUSC}, url = {http://dx.doi.org/10.1103/PhysRevD.63.052002}, abstract = {A study of the {\ensuremath{\nu}}? -jet mass spectrum in e+p?{\ensuremath{\nu}}? 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 {\ensuremath{\nu}}? -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?{\ensuremath{\nu}}? 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 {\ensuremath{\nu}}? q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks}, issn = {0556-2821} }