Search for First-Generation Scalar and Vector Leptoquarks

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RESEARCH PRODUCT

Search for First-Generation Scalar and Vector Leptoquarks

Vm Abazov B Abbott A Abdesselam M Abolins V Abramov Bs Acharya Dl Adams M Adams Sn Ahmed Gd Alexeev Ga Alves N Amos Ew Anderson Y Arnoud Mm Baarmand Vv Babintsev L Babukhadia Tc Bacon A Baden B Baldin Pw Balm S Banerjee E Barberis P Baringer J Barreto Jf Bartlett U Bassler D Bauer A Bean M Begel A Belyaev Sb Beri G Bernardi I Bertram A Besson R Beuselinck Va Bezzubov Pc Bhat V Bhatnagar M Bhattacharjee G Blazey S Blessing A Boehnlein Ni Bojko F Borcherding K Bos A Brandt R Breedon G Briskin R Brock G Brooijmans A Bross D Buchholz M Buehler V Buescher Vs Burtovoi Jm Butler F Canelli W Carvalho D Casey Z Casilum H Castilla-valdez D Chakraborty Km Chan Sv Chekulaev Dk Cho S Choi S Chopra Jh Christenson M Chung D Claes Ar Clark J Cochran L Coney B Connolly We Cooper D Coppage S Crepe-renaudin Mac Cummings D Cutts Ga Davis K Davis K De Sj De Jong K Del Signore M Demarteau R Demina P Demine D Denisov Sp Denisov S Desai Ht Diehl M Diesburg G Di Loreto S Doulas P Draper Y Ducros Lv Dudko S Duensing L Duflot Sr Dugad A Duperrin A Dyshkant D Edmunds J Ellison Vd Elvira R Engelmann S Eno G Eppley P Ermolov Ov Eroshin J Estrada H Evans Vn Evdokimov T Fahland S Feher D Fein T Ferbel F Filthaut He Fisk Y Fisyak E Flattum F Fleuret M Fortner H Fox Kc Frame S Fu S Fuess E Gallas An Galyaev M Gao V Gavrilov Rj Genik K Genser Ce Gerber Y Gershtein R Gilmartin G Ginther B Gomez G Gomez Pi Goncharov Jlg Solis H Gordon Lt Goss K Gounder A Goussiou N Graf G Graham Pd Grannis Ja Green H Greenlee S Grinstein L Groer S Grunendahl A Gupta Sn Gurzhiev G Gutierrez P Gutierrez Nj Hadley H Haggerty S Hagopian V Hagopian Re Hall P Hanlet S Hansen Jm Hauptman C Hays C Hebert D Hedin Jm Heinmiller Ap Heinson U Heintz T Heuring Md Hildreth R Hirosky Jd Hobbs B Hoeneisen Y Huang R Illingworth As Ito M Jaffre S Jain R Jesik K Johns M Johnson A Jonckheere M Jones H Jostlein A Juste W Kahl S Kahn E Kajfasz Am Kalinin D Karmanov D Karmgard Z Ke R Kehoe A Khanov A Kharchilava Sk Kim B Klima B Knuteson W Ko Jm Kohli Av Kostritskiy J Kotcher B Kothari Av Kotwal Av Kozelov Ea Kozlovsky J Krane Mr Krishnaswamy P Krivkova S Krzywdzinski M Kubantsev S Kuleshov Y Kulik S Kunori A Kupco Ve Kuznetsov G Landsberg Wm Lee A Leflat C Leggett F Lehner J Li Qz Li X Li Jgr Lima D Lincoln Sl Linn J Linnemann R Lipton A Lucotte L Lueking C Lundstedt C Luo Aka Maciel Rj Madaras Vl Malyshev V Manankov Hs Mao T Marshall Mi Martin Rd Martin Km Mauritz B May Aa Mayorov R Mccarthy T Mcmahon Hl Melanson M Merkin Kw Merritt C Miao H Miettinen D Mihalcea Cs Mishra N Mokhov Nk Mondal He Montgomery Rw Moore M Mostafa H Da Motta E Nagy F Nang M Narain Vs Narasimham Ha Neal Jp Negret S Negroni T Nunnemann D O'neil V Oguri B Olivier N Oshima P Padley Lj Pan K Papageorgiou A Para N Parashar R Partridge N Parua M Paterno A Patwa B Pawlik J Perkins M Peters O Peters P Petroff R Piegaia Bg Pope E Popkov Hb Prosper S Protopopescu J Qian R Raja S Rajagopalan E Ramberg Pa Rapidis Nw Reay S Reucroft M Ridel M Rijssenbeek F Rizatdinova T Rockwell M Roco P Rubinov R Ruchti J Rutherfoord Bm Sabirov G Sajot A Santoro L Sawyer Rd Schamberger H Schellman A Schwartzman N Sen E Shabalina Rk Shivpuri D Shpakov M Shupe Ra Sidwell V Simak H Singh Jb Singh V Sirotenko P Slattery E Smith Rp Smith R Snihur Gr Snow J Snow S Snyder J Solomon V Sorin M Sosebee N Sotnikova K Soustruznik M Souza Nr Stanton G Steinbruck Rw Stephens F Stichelbaut D Stoker V Stolin A Stone Da Stoyanova M Strauss M Strovink L Stutte A Sznajder M Talby W Taylor S Tentindo-repond Sm Tripathi Tg Trippe As Turcot Pm Tuts P Van Gemmeren V Vaniev R Van Kooten N Varelas Ls Vertogradov F Villeneuve-seguier Aa Volkov Ap Vorobiev Hd Wahl H Wang Zm Wang J Warchol G Watts M Wayne H Weerts A White Jt White D Whiteson Ja Wightman Da Wijngaarden S Willis Sj Wimpenny J Womersley Dr Wood R Yamada P Yamin T Yasuda Ya Yatsunenko K Yip S Youssef J Yu Z Yu M Zanabria H Zheng Z Zhou M Zielinski D Zieminska A Zieminski V Zutshi Eg Zverev A Zylberstejn Do Collaboration

subject

Quark Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Branching fraction Scalar (mathematics)High Energy Physics::Phenomenology Tevatron FOS: Physical sciences HERA 01 natural sciences High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex)Pair production 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Leptoquark High Energy Physics::Experiment 010306 general physics Lepton

description

We describe a search for the pair production of first-generation scalar and vector leptoquarks in the eejj and enujj channels by the D0 Collaboration. The data are from the 1992--1996 ppbar run at sqrt{s} = 1.8 TeV at the Fermilab Tevatron collider. We find no evidence for leptoquark production; in addition, no kinematically interesting events are observed using relaxed selection criteria. The results from the eejj and enujj channels are combined with those from a previous D0 analysis of the nunujj channel to obtain 95% confidence level (C.L.) upper limits on the leptoquark pair-production cross section as a function of mass and of beta, the branching fraction to a charged lepton. These limits are compared to next-to-leading-order theory to set 95% C.L. lower limits on the mass of a first-generation scalar leptoquark of 225, 204, and 79 GeV/c^2 for beta=1, 1/2, and 0, respectively. For vector leptoquarks with gauge (Yang-Mills) couplings, 95% C.L. lower limits of 345, 337, and 206 GeV/c^2 are set on the mass for beta=1, 1/2, and 0, respectively. Mass limits for vector leptoquarks are also set for anomalous vector couplings.

year	journal	country	edition	language
2001-01-01

https://dx.doi.org/10.48550/arxiv.hep-ex/0105072