Search for resonance decays to a v̄ plus jet in e+p scattering at des y HERA

  • J. Breitweg
  • , S. Chekanov
  • , M. Derrick
  • , D. Krakauer
  • , S. Magill
  • , B. Musgrave
  • , A. Pellegrino
  • , J. Repond
  • , R. Stanek
  • , R. Yoshida
  • , M. C.K. Mattingly
  • , P. Antonioli
  • , G. Bari
  • , M. Basile
  • , L. Bellagamba
  • , D. Boscherini
  • , A. Bruni
  • , G. Bruni
  • , G. Cara Romeo
  • , L. Cifarelli
  • F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Lacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, C. Amelung, C. A. Bornheim, I. Brock, K. Coböken, J. Crittenden, R. Deffner, H. Hartmann, K. Heinloth, E. Hilger, P. Irrgang, H. P. Jakob, A. Kappes, U. F. Katz, R. Kerger, E. Paul, J. Rautenberg, H. Schnurbusch, A. Stifutkin, J. Tandler, K. C. Voss, A. Weber, H. Wieber, D. S. Bailey, O. Barret, N. H. Brook, B. Foster, G. P. Heath, H. F. Heath, E. Rodrigues, J. Scott, R. J. Tapper, M. Capua, A. Mastroberardino, M. Y. Pac, A. Caldvvell, W. Liu, X. Liu, B. Mellado, A. Eskreys, J. Figiel, K. Klimek, K. Olkiewicz, K. Piotrzkowski, M. B. Przybycien, P. Stopa, L. Zawiejski, B. Bednarek, K. Jeleri, D. Kisielewska, A. M. Kowal, T. Kowalski

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

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.

Lingua originaleInglese
Numero di articolo052002
RivistaPhysical Review D
Volume63
Numero di pubblicazione5
DOI
Stato di pubblicazionePubblicato - 2001
Pubblicato esternamente

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