Search for first generation leptoquark pair production in the electron + missing energy + jets final state

V M Abazov,R Jesik,D K Cho,J Clutter,P Verdier,P A Kasper,V Hynek,S Lammers,J Linnemann,G Grenier,R Illingworth,J Martínez-Ortega,P Renkel,A Kharchilava,C Hensel,D Hedin,K Devaughan,G Borissov,S Cihangir,S Uvarov,T Adams,D Vilanova,Y Scheglov,M Begel,D Smirnov,M Corcoran,Y A Yatsunenko,N Osman,M Verzocchi,V A Bezzubov,T Guillemin,R K Shivpuri,V Buescher,O Atramentov,F Filthaut,S Kermiche,S W Lee,I Heredia-De La Cruz,E Camacho-Pérez,H S Lee,P G Mercadante,L Bellantoni,J F Bartlett,A Khanov,M M Meijer,O Brandt,N K Mondal,S Greder,L Sawyer,G J Otero Y Garzón,Y Enari,H J Lubatti,C Tully,G Watts,S Choi,R Brock,A Haas,Y Liu,K M Chan,I A Vasilyev,A Chandra,R Yamada,M Diesburg,G Landsberg,A White,A Dominguez,J Ellison,D V Bandurin,T Schliephake,A Brandt,A P Heinson,P Baringer,H Greenlee,T Scanlon,A Dyshkant,J Stark,K Harder,V A Kuzmin,A Alton,I Iashvili,T H Burnett,S K Park,D Jamin,N Prokopenko,A L Lyon,H A Neal,M Besançon,J Orduna,S Dutt,V Bunichev,R Magaña-Villalba,Y Gershtein,A Lobodenko,J Sekaric,L Stutte,M Weber,P Neustroev,S B Beri,B S Acharya,R D Schamberger,P F Ding,M Perfilov,M Arov,S W Cho,M Aoki,J P Negret,D Price,S Fuess,Y Maravin,M Wayne,D Karmanov,V L Malyshev,R Van Kooten,D Boline,P Pétroff,S Zelitch,K Bloom,V Bhatnagar,W Geng,J Backusmayes,H Yin,M Begalli,K Yip,T Ferbel,B Tuchming,R Piegaia,Z D Greenwood,Z Liu,A Sánchez-Hernández,T Hoang,R Partridge,S Jabeen,S Chevalier-Théry,N Parashar,A Evdokimov,J Barreto,G Ginther,E Barberis,A Boehnlein,D Gerbaudo,D Wicke,N Huske,G Brooijmans,Y Xie,H Severini,F Guo,T Bose,S Burdin,S M Lietti,G A Alves,H E Fisk,A Ross,P Svoisky,E Shabalina,S Blessing,C P Buszello,B Sanghi,A Quadt,S Banerjee,M Cooke,E Kajfasz,B Åsman,G R Snow,T Kurča,L Welty-Rieger,L Sonnenschein,N Khalatyan,I Katsanos,G Chen,G D Alexeev,V Stolin,A A Shchukin,D Edmunds,M Strauss,M Vesterinen,S Snyder,S W Youn,R Kehoe,I Razumov,J Brown,C Schwanenberger,T R Wyatt,A V Kozelov,F Déliot,M Demarteau,D A Stoyanova,P Slattery,A Meyer,G Blazey,M Padilla,V Sirotenko,H T Diehl,T Yasuda,F Fiedler,J Haley,A Harel,K Petridis,A S Santos,Y Peters,F Couderc,G Alkhazov,M Takahashi,M Naimuddin,M Mulhearn,S Beale,M P Sanders,Y N Kharzheev,P D Grannis,D Strom,A Grohsjean,B Zhou,S Hagopian,M Buehler,N Varelas,J M Hauptman,M Johnson,D Menezes,G Bernardi,D Tsybychev,S Desai,L Li,V Parihar,D Chakraborty,M Fortner,D Brown,P Polozov,P Salcido,M Jaffré,M Prewitt,U Heintz,R Lipton,W M Lee,U Bassler,S Kulikov,M Rominsky,A Pal,S Malik,P N Ratoff,G Davies,J Lellouch,A Croc,D Johnston,A S Ito,M Hohlfeld,A Melnitchouk,R Hirosky,R Bernhard,J.-F Grivaz,E Nagy,R Schwienhorst,L Suter,Q Z Li,A Bross,J Osta,J Snow,D Lincoln,A Dubey,F Rizatdinova,S Grünendahl,X B Bu,T Hebbeker,A Askew,M Wobisch,P C Bhat,B Penning,D Mackin,L Bagby,C L Mcgivern,H Evans,J M Kohli,W M Van Leeuwen,N Parua,C Deterre,S J De Jong,M Merkin,G Obrant,Y Ilchenko,G Facini,K Herner,R Beuselinck,W Taylor,P Rubinov,S Chakrabarti,M S Rangel,B Hoeneisen,G W Wilson,S F Novaes,Ph Gris,V M Podstavkov,I Ripp-Baudot,B Quinn,S Protopopescu,J Meyer,M Rijssenbeek,G Savage,J Warchol,V D Elvira,C E Gerber,Z Ye,J Joshi,A Jayasinghe,A Das,J Zhu,K Peters,V Shary,D Duggan,J Qian,K De,H Hegab,H Schellman,S Uzunyan,E W Varnes,K Ranjan,G Sajot,C Royon,E M Gregores,B Baldin,J Hays,T Dorland,A Jonckheere,M Eads,G Petrillo,S Yacoob,B Abbott,L Uvarov,V V Lipaev,H D Wahl,K Kaadze,J Kvita,D Denisov,M A Carrasco-Lizarraga,H Fox,V V Tokmenin,E De La Cruz-Burelo,W E Cooper,G Safronov,V Gavrilov,L S Vertogradov,G Golovanov,A Patwa,M Narain,R Madar,T Head,G S Muanza,R Nayyar,B Calpas,R Ruchti,A Duperrin,S Schlobohm,S P Denisov,F Miconi,M Titov,P Lebrun,T Nunnemann,J Yu,S Söldner-Rembold,A Bean,P Skubic,F Badaud,K A Johns ,A García-Bellido ,M Hildreth ,B C.k Casey ,I A Bertram ,A J Tanasijczuk ,J K Kraus ,V Šimák ,A Kupčo ,A Juste Rozas ,G Hamel De Monchenault ,P Vokáč ,D Ziemińska ,X T Huang ,R Luna-García ,А В Попов ,M A Pleier ,C Ávila ,M Lokajı́ček ,B C Choudhary ,H Castilla‐Valdez ,P Jönsson ,В Н Евдокимов ,A G Goussiou ,P Gutiérrez ,D Wood ,R Lopes De ,P L.m Podesta-Lerma ,D Ćutts ,Jaehoon Lim ,M Zieliński ,T C Zhao ,R L Mccarthy ,M R Adams ,V E Bazterra ,M Kirby ,L Dudko ,C J Xu ,E Boos ,C Bélanger-Champagne ,M C Cousinou ,Andreas Werner Jung ,W C Fisher ,J Hobbs ,J A Parsons ,Z Hubáček ,A K.a Maciel ,D R Claes ,M Grünewald ,Michael Wang ,Mark Richard James Williams ,G Gutiérrez ,W C Yang ,Han Liu ,Y T Tsai ,Arun Kumar ,R Démina ,G G Hesketh ,K Soustružnı́k ,K Smith ,L Živković

doi:10.1103/physrevd.84.071104

Abstract

We present a search for the pair production of first generation scalar leptoquarks (LQ) in data corresponding to an integrated luminosity of 5.4 fb$^{-1}$ collected with the D0 detector at the Fermilab Tevatron Collider in ppbar collisions at $\sqrt{s}=1.96$ TeV. In the channel $LQ \bar{LQ} \rightarrow e\nu_e qq'$, where q, q' are u or d quarks, no significant excess of data over background is observed, and we set a 95% C.L. lower limit of 326 GeV on the leptoquark mass, assuming equal probabilities of leptoquark decays to eq and $\nu_e q'$.

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