Search For Resonance Decays To A (Nu)Over-Bar Plus Jet In E(+)P Scattering At Desy Hera

J. Breitweg, S. Chekanov,M. Derrick,D. Krakauer, S. Magill,B. Musgrave,A. Pellegrino,J. Repond,R. Stanek,R. Yoshida, M. Mattingly,P. Antonioli,G. Bari,M. Basile, L. Bellagamba, D. Boscherini,A. Bruni, G. Bruni,G. Romeo, L. Cifarelli,F. Cindolo,A. Contin,M. Corradi,S. De Pasquale,P. Giusti,G. Iacobucci,G. Levi, A. Margotti,T. Massam,R. Nania, F. Palmonari,A. Pesci,G. Sartorelli, A. Zichichi, C. Amelung,A. Bornheim, I. Brock,K. Coböken,J. Crittenden,R. Deffner,H. Hartmann,K. Heinloth,E. Hilger,P. Irrgang,H.-P. Jakob,A. Kappes,U. Katz,R. Kerger,E. Paul,J. Rautenberg,H. Schnurbusch,A. Stifutkin,J. Tandler,K. Voss,A. Weber,H. Wieber,D. Bailey,O. Barret,N. Brook, B. Foster,G. Heath,H. Heath,E. Rodrigues,J. Scott,R. Tapper,M. Capua, A. Mastroberardino,M. Schioppa,G. Susinno,H. Jeoung,J. Kim,J. Lee,I. Lim,K. Ma,M. Pac,A. Caldwell,W. Liu,X. Liu,B. Mellado,S. Paganis,S. Sampson,W. Schmidke,F. Sciulli,J. Chwastowski,A. Eskreys,J. Figiel,K. Klimek,K. Olkiewicz,K. Piotrzkowski, M. Przybycień,P. Stopa,L. Zawiejski,B. Bednarek,K. Jeleń, D. Kisielewska,A. Kowal,T. Kowalski,M. Przybycień,E. Rulikowska-Zarȩbska,L. Suszycki,D. Szuba,A. Kotański,L. Bauerdick, U. Behrens,J. Bienlein, K. Borras,V. Chiochia,D. Dannheim,K. Desler,G. Drews,A. Fox-Murphy,U. Fricke,F. Goebel,S. Goers,P. Göttlicher,R. Graciani,T. Haas,W. Hain,G. Hartner,D. Hasell,K. Hebbel, S. Hillert,M. Kasemann, W. Koch,U. Kötz,H. Kowalski,H. Labes,L. Lindemann,B. Löhr, R. Mankel,J. Martens, M. Martínez,M. Milite,M. Moritz,D. Notz,M. Petrucci, A. Polini,M. Rohde, A. Savin,U. Schneekloth,F. Selonke,M. Sievers, S. Stonjek,G. Wolf,U. Wollmer,C. Youngman, W. Zeuner,C. Coldewey,A. Lopez-Duran Viani, A. Meyer,S. Schlenstedt,P. Straub, G. Barbagli, E. Gallo,A. Parenti,P. Pelfer,A. Bamberger,A. Benen,N. Coppola,S. Eisenhardt,P. Markun, H. Raach,S. Wölfle, P. Bussey,M. Bell,A. Doyle,C. Glasman, S. Lee,A. Lupi,N. Macdonald,G. McCance,D. Saxon, L. Sinclair,I. Skillicorn,R. Waugh,I. Bohnet,N. Gendner,U. Holm, A. Meyer-Larsen,H. Salehi,K. Wick, T. Carli,A. Garfagnini,I. Gialas,L. Gladilin,D. Kçira,R. Klanner,E. Lohrmann,R. Gonçalo,K. Long, D. Miller,A. Tapper,R. Walker,U. Mallik,P. Cloth,D. Filges,T. Ishii,M. Kuze,K. Nagano, K. Tokushuku, S. Yamada,Y. Yamazaki,S. Ahn, S. Lee,S. Park,H. Lim,I. Park, D. Son,F. Barreiro,G. García,O. González, L. Labarga,J. del Peso,I. Redondo, J. Terrón,M. Vázquez,M. Barbi,F. Corriveau,D. Hanna,A. Ochs,S. Padhi,D. Stairs, M. Wing,T. Tsurugai,A. Antonov,V. Bashkirov,M. Danilov,B. Dolgoshein,D. Gladkov,V. Sosnovtsev,S. Suchkov,R. Dementiev,P. Ermolov,Yu. Golubkov, I. Katkov,L. Khein,N. Korotkova,I. Korzhavina,V. Kuzmin,O. Lukina,A. Proskuryakov,L. Shcheglova,A. Solomin,N. Vlasov,S. Zotkin,C. Bokel, M. Botje,N. Brümmer,J. Engelen,S. Grijpink, E. Koffeman,P. Kooijman,S. Schagen,A. van Sighem,E. Tassi,H. Tiecke,N. Tuning,J. Velthuis,J. Vossebeld,L. Wiggers,E. de Wolf, B. Bylsma,L. Durkin,J. Gilmore, C. Ginsburg,C. Kim,T. Ling,S. Boogert,A. Cooper-Sarkar,R. Devenish,J. Große-Knetter,T. Matsushita,O. Ruske,M. Sutton, R. Walczak,A. Bertolin,R. Brugnera, R. Carlin,F. Dal Corso, U. Dosselli,S. Dusini,S. Limentani,M. Morandin,M. Posocco,L. Stanco,R. Stroili,M. Turcato,C. Voci,L. Adamczyk,L. Iannotti,B. Oh, J. Okrasiński,P. Saull,W. Toothacker,J. Whitmore,Y. Iga,G. D’Agostini,G. Marini,A. Nigro,C. Cormack,J. Hart,N. McCubbin, T. Shah,D. Epperson, C. Heusch,H. Sadrozinski, A. Seiden,R. Wichmann,D. Williams,N. Pavel, H. Abramowicz,S. Dagan,S. Kananov,A. Kreisel,A. Levy,T. Abe,T. Fusayasu,K. Umemori,T. Yamashita,R. Hamatsu,T. Hirose,M. Inuzuka,S. Kitamura,T. Nishimura,M. Arneodo, N. Cartiglia,R. Cirio,M. Costa,M. Ferrero, S. Maselli, V. Monaco,C. Peroni, M. Ruspa, R. Sacchi, A. Solano, A. Staiano,D. Bailey,C.-P. Fagerstroem,R. Galea,T. Koop,G. Levman,J. Martin, R. Orr,S. Polenz,A. Sabetfakhri,D. Simmons,J. Butterworth,M. Hayes,E. Heaphy,T. Jones,J. Lane,B. West, J. Ciborowski, R. Ciesielski, G. Grzelak,R. Nowak,J. Pawlak,R. Pawlak,B. Smalska,T. Tymieniecka,A. Wróblewski,J. Zakrzewski,A. Żarnecki,M. Adamus,T. Gadaj,O. Deppe,Y. Eisenberg,D. Hochman,U. Karshon,W. Badgett,D. Chapin,R. Cross, C. Foudas,S. Mattingly,D. Reeder,W. Smith,A. Vaiciulis,T. Wildschek,M. Wodarczyk,A. Deshpande,S. Dhawan,V. Hughes,S. Bhadra,C. Catterall,J. Cole,W. Frisken, R. Hall-Wilton, M. Khakzad,S. Menary

PHYSICAL REVIEW D（2001）

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摘要

A study of the <()over bar>-jet mass spectrum in e(+) p--><()over bar>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 <()over bar>-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--><()over bar>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 <()over bar>q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks.

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