Multijet cross sections in charged currente±pscattering at HERA

S Chekanov,L Wiggers,A Keramidas,G Grigorescu,T P Stewart,L K Gladilin,S Fourletov,N Brümmer,G Marini,J Ferrando,Olga Lukina ,W Hain,B Brzozowska,V Monaco,B A Dolgoshein,H Wolfe,Lloyd Stanley Durkin ,M Turcato,G Grzelak,Y Iga,J Fourletova,M Borodin,A M Cooper‐Sarkar ,P Antonioli,W H Smith,Wolfram Dietrich Zeuner ,I.-A Melzer-Pellmann,K Piotrzkowski,G D’Agostini,M Kuze,M Przybycién ,J Łukasik,A E Nuncio-Quiroz,C Foudas,P Łużniak,T Haas,J Repond,A Hüttmann,S Kagawa,G Bruni,Y Eisenberg,D Boscherini,C Büttner,R Ingbir,P Kooijman,D Bartsch,L Cifarelli,R Nania,B.y Oh ,T Tawara,C Glasman,T Matsumoto,A Levy,S Dusini,Philipp Roloff ,V Roberfroid,R Renner,B Foster,B B Levchenko,Z A Ibrahim,K Long ,Shruti Patel ,J Malka,E Koffeman,T Bołd,G Iacobucci,M Adamus,R Yoshida,M Schioppa,N Pavel,C Liu,A Pellegrino,P Bussey ,T Namsoo,A Solano,T Tymieniecka,R Walsh,L A Khein,P Kulinski,U Samson,I Rubinsky,U Schneekloth,H Abramowicz,A Eskreys,D Gladkov,J Maeda,G Wolf,I M Gregor ,C A Fry ,M Basile,H Tiecke,B Musgrave,W B Schmidke,A Savin ,Y Yamazaki,M Wlasenko,Ning Ye ,A Lee,J Whyte,M Forrest,P Stopa,D.s Zotkin ,I A Korzhavina,Y.d Ri ,V A Kuzmin,A Contin,R Sacchi,S Kitamura,K Nagano,D Szuba,A Galas,M Gil,F Januschek,R Shehzadi,G Sartorelli,M Wing,A Kotański,A Everett,O Smith,M Lisovyi,A N Barakbaev,C Youngman,A I Robertson ,O Ota,R Klanner,A Polini,A.s Proskuryakov ,J Standage,J Schwartz,R J Nowak,Hiroshi Kaji ,C D Catterall,J Ukleja,R Ciesielski,T Danielson,M Ruspa,J De Favereau,P Pluciński ,T Schörner-Sadenius,A Zichichi,E Hilger,A Ukleja,W Słomiński,V Drugakov,R K Dementiev,I O Skillicorn,E Ron,R Carlin,William M Dunne ,D H Saxon,I Grabowska-Bołd,R Mankel,R Brugnera,K Oliver,G Bari,A Bruni,J M Pawlak,P G Pelfer,L.m Shcheglova ,V Sosnovtsev,E Tassi,S Bhadra,S Suchkov,M.c.k Mattingly ,D Dobur,L Zawiejski,J D Morris,А Спиридонов ,A Margotti,R Hamatsu,W Lohmann,R C E Devenish,E.g Boos ,J J Whitmore,K Olkiewicz,K Tokushuku,E Lobodzinska,L Bellagamba,P Ermolov ,M Vázquez,A Kozulia,U Karshon,U Holm,U Noor,E Gallo,H Hartmann,C Zhou,I Katkov ,A Raval,G Barbagli,F Karstens,T Y Ling,N Okazaki,P Göttlicher,D.d Reeder ,I Brock,F Sciulli,J Grebenyuk,M Jiménez ,J Terrón,K Papageorgiu,M I Ferrero,J Sztuk,M Jüngst,P Schleper,M Bindi,A M Gabareen ,B Kahle,J Szuba,J Figiel,Yu A Golubkov,S Menary,T Theedt,S Boutle ,S Shimizu,S De Pasquale,J E Cole,V Aushev,A Bertolin,A Montanari,B Bylsma,L Labarga,Z Ren,C Blohm,S Yamada,J Del Peso,S Antonelli,А Антонов ,M Arneodo,S Magill,T W Jones,H.‐P Jakob ,R Hori,G P Heath,B Kamaluddin,L Suszycki,S Miglioranzi,D Kçira,D Nicholass,U Behrens,A T Doyle,A Caldwell,J C Hart,A Stern,J H Loizides,I Abt,E Paul,E Lohrmann,D Notz,B Reisert,V Schönberg,B.o Zhautykov ,C Gwenlan,N H Brook,J Sutiak,M Zambrana,S Schlenstedt,A Nigro,A Bonato,A F Żarnecki,S Limentani,K Korcsak-Gorzo,T Tsurugai,K Borras,M Jechow,M Rosin,Wan Ahmad Tajuddin Wan Abdullah ,U Klein,M Capua,G Hartner,J Ciborowski,L Adamczyk,G Susinno,N Vlasov ,M Derrick,P D Allfrey,A Longhin,R Walczak,D Kisielewska,D Kollár ,D Son,N S Pokrovskiy,A Mastroberardino,P Bellan,R Santamarta,F Barreiro,F Cindolo,A Tapper ,Yanou Cui ,A.g Yagües Molina ,H Stadie,A Parenti,A Stifutkin,Mara Senghi Soares ,A Bamberger,E Brownson,A Garfagnini,B Löhr,M Costa,J M Butterworth,P.b Straub ,S Fazio,F Corriveau,L Rinaldi,K Wrona,A Geiser,J F Martin,C Uribe-Estrada,J J Chwastowski ,S S Fang ,S Kananov,M Corradi,H Kowalski,N Coppola,J Y Kim,D Hochman,U Kötz,P Ryan,I Gialas,M A Bell,F Dal Corso,L Stančo

doi:10.1103/physrevd.78.032004

Abstract

Jet cross sections were measured in charged-current deep inelastic e(+/-)p scattering at high boson virtualities Q(2) with the ZEUS detector at HERA II using an integrated luminosity of 0.36 fb(-1). Differential cross sections are presented for inclusive-jet production as functions of Q(2), Bjorken x and the jet transverse energy and pseudorapidity. The dijet invariant mass cross section is also presented. Observation of three- and four-jet events in charged-current e(+/-)p processes is reported for the first time. The predictions of next-to-leading-order (NLO) QCD calculations are compared to the measurements. The measured inclusive-jet cross sections are well described in shape and normalization by the NLO predictions. The data have the potential to constrain the u and d valence-quark distributions in the proton if included as input to global fits.

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