Measurement of the ratio of inclusive cross sectionsσ(pp¯→Z+2b jets /σ(pp¯→Z+2 jets)inpp¯collisions ats=1.96  TeV

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

doi:10.1103/physrevd.91.052010

Abstract

We measure the ratio of cross sections, $\sigma(p\bar{p}\rightarrow Z+2~b~\text{jets})$/$\sigma(p\bar{p}\rightarrow Z+\text{2 jets})$, for associated production of a $Z$ boson with at least two jets with transverse momentum $p_T^{\rm jet} > 20$ GeV and pseudorapidity $|\eta^{\rm jet}| < 2.5$. This measurement uses data corresponding to an integrated luminosity of 9.7 fb$^{-1}$ collected by the \DO experiment in Run II of Fermilab's Tevatron \ppbar Collider at a center-of-mass energy of 1.96 TeV. The measured integrated ratio of $0.0236\pm0.0032\left(\mbox{stat}\right)\pm0.0035\left(\mbox{syst}\right)$ is in agreement with predictions from next-to-leading-order perturbative QCD and the Monte Carlo event generators {\sc pythia} and {\sc alpgen}.

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