Search for the Standard Model Higgs Boson inZH→ℓ+ℓ−bb¯Production with the D0 Detector in9.7  fb−1ofpp¯Collisions ats=1.96  TeV

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

doi:10.1103/physrevlett.109.121803

Abstract

We present a search for the standard model (SM) Higgs boson produced in association with a Z boson in 9.7 fb-1 of ppbar collisions collected with the D0 detector at the Fermilab Tevatron Collider at sqrt(s) = 1.96 TeV. Selected events contain one reconstructed Z-> e+e- or Z-> mu+mu- candidate and at least two jets, including at least one jet identified as likely to contain a b quark. To validate the search procedure, we also measure the cross section for ZZ production in the same final state. It is found to be consistent with its SM prediction. We set upper limits on the ZH production cross section times branching ratio for H->bbbar at the 95% C.L. for Higgs boson masses 90 < M_H < 150 GeV. The observed (expected) limit for M_H = 125 GeV is 7.1 (5.1) times the SM cross section.

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