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Measurement of the ratio of inclusive cross sections $\sigma(p\bar{p}\rightarrow Z+b{\rm\, jet})/ \sigma(p\bar{p}\rightarrow Z+{\rm jet})$ at $\sqrt{s}=1.96$ TeV

V.M. Abazov B. Abbott B.S. Acharya M. Adams T. Adams G.D. Alexeev G. Alkhazov A. Alton G. Alverson G.A. Alves L.S. Ancu M. Aoki Y. Arnoud 1 M. Arov A. Askew B. Asman O. Atramentov C. Avila J. Backusmayes F. Badaud 2 L. Bagby B. Baldin D.V. Bandurin S. Banerjee E. Barberis P. Baringer J. Barreto 3 J.F. Bartlett U. Bassler 4 V. Bazterra S. Beale A. Bean M. Begalli M. Begel C. Belanger-Champagne L. Bellantoni S.B. Beri G. Bernardi 5 R. Bernhard I. Bertram M. Besançon 4 R. Beuselinck V.A. Bezzubov P.C. Bhat V. Bhatnagar G. Blazey S. Blessing K. Bloom A. Boehnlein D. Boline T.A. Bolton E.E. Boos G. Borissov T. Bose A. Brandt O. Brandt R. Brock G. Brooijmans A. Bross D. Brown 5 J. Brown 5 X.B. Bu M. Buehler V. Buescher V. Bunichev S. Burdin T.H. Burnett C.P. Buszello B. Calpas 6 E. Camacho-Pérez M.A. Carrasco-Lizarraga B.C.K. Casey H. Castilla-Valdez S. Chakrabarti D. Chakraborty K.M. Chan A. Chandra G. Chen S. Chevalier-Théry 4 D.K. Cho S.W. Cho S. Choi B. Choudhary T. Christoudias S. Cihangir D. Claes J. Clutter M. Cooke W.E. Cooper M. Corcoran F. Couderc 4 M.-C. Cousinou 6 A. Croc 4 D. Cutts M. Cwiok A. Das G. Davies K. De S.J. de Jong E. de la Cruz-Burelo F. Déliot 4 M. Demarteau R. Demina D. Denisov S.P. Denisov S. Desai K. Devaughan H.T. Diehl M. Diesburg A. Dominguez T. Dorland A. Dubey L.V. Dudko D. Duggan A. Duperrin 6 S. Dutt A. Dyshkant M. Eads D. Edmunds J. Ellison V.D. Elvira Y. Enari H. Evans A. Evdokimov V.N. Evdokimov G. Facini T. Ferbel F. Fiedler F. Filthaut W. Fisher H.E. Fisk M. Fortner H. Fox S. Fuess T. Gadfort A. Garcia-Bellido V. Gavrilov Pascal Gay 2 W. Geist W. Geng 6 D. Gerbaudo C.E. Gerber Y. Gershtein G. Ginther G. Golovanov A. Goussiou P.D. Grannis S. Greder H. Greenlee Z.D. Greenwood E.M. Gregores G. Grenier 7 Ph. Gris 2 J.-F. Grivaz 8 A. Grohsjean 4 S. Grünendahl M.W. Grünewald F. Guo G. Gutierrez P. Gutierrez A. Haas S. Hagopian J. Haley L. Han K. Harder A. Harel J.M. Hauptman J. Hays T. Head T. Hebbeker D. Hedin H. Hegab A.P. Heinson U. Heintz C. Hensel I. Heredia-de la Cruz K. Herner G. Hesketh M.D. Hildreth R. Hirosky T. Hoang J.D. Hobbs B. Hoeneisen M. Hohlfeld S. Hossain Z. Hubacek 4 N. Huske 5 V. Hynek I. Iashvili R. Illingworth A.S. Ito S. Jabeen M. Jaffré 8 S. Jain D. Jamin 6 R. Jesik K. Johns M. Johnson D. Johnston A. Jonckheere P. Jonsson J. Joshi A. Juste K. Kaadze E. Kajfasz 6 D. Karmanov P.A. Kasper I. Katsanos R. Kehoe S. Kermiche 6 N. Khalatyan A. Khanov A. Kharchilava Y.N. Kharzheev D. Khatidze M.H. Kirby J.M. Kohli A.V. Kozelov J. Kraus A. Kumar A. Kupco T. Kurca 7 V.A. Kuzmin J. Kvita S. Lammers G. Landsberg P. Lebrun 7 H.S. Lee S.W. Lee W.M. Lee J. Lellouch 5 L. Li Q.Z. Li S.M. Lietti J.K. Lim D. Lincoln J. Linnemann V.V. Lipaev R. Lipton Yehan Liu Z. Liu A. Lobodenko M. Lokajicek P. Love H.J. Lubatti R. Luna-Garcia A.L. Lyon A.K.A. Maciel D. Mackin R. Madar 4 R. Magana-Villalba S. Malik V.L. Malyshev Y. Maravin J. Martınez-Ortega R. Mccarthy C.L. Mcgivern M.M. Meijer A. Melnitchouk D. Menezes P.G. Mercadante M. Merkin A. Meyer J. Meyer N.K. Mondal G.-S. Muanza 6 M. Mulhearn E. Nagy 6 M. Naimuddin M. Narain R. Nayyar H.A. Neal J.P. Negret P. Neustroev S.F. Novaes T. Nunnemann G. Obrant J. Orduna N. Osman J. Osta G.J. Otero y Garzon M. Owen M. Padilla M. Pangilinan N. Parashar V. Parihar S.K. Park J. Parsons R. Partridge N. Parua A. Patwa B. Penning M. Perfilov K. Peters Y. Peters G. Petrillo P. Pétroff 8 R. Piegaia J. Piper M.-A. Pleier P.L.M. Podesta-Lerma V.M. Podstavkov M.-E. Pol P. Polozov A.V. Popov M. Prewitt D. Price S. Protopopescu J. Qian A. Quadt B. Quinn M.S. Rangel K. Ranjan P.N. Ratoff I. Razumov P. Renkel P. Rich M. Rijssenbeek I. Ripp-Baudot F. Rizatdinova M. Rominsky C. Royon 4 P. Rubinov R. Ruchti G. Safronov G. Sajot 1 A. Sanchez-Hernandez M.P. Sanders B. Sanghi A.S. Santos G. Savage L. Sawyer T. Scanlon R.D. Schamberger Y. Scheglov H. Schellman T. Schliephake S. Schlobohm C. Schwanenberger R. Schwienhorst J. Sekaric H. Severini E. Shabalina V. Shary 4 A.A. Shchukin R.K. Shivpuri V. Simak V. Sirotenko P. Skubic P. Slattery D. Smirnov K.J. Smith G.R. Snow J. Snow S. Snyder S. Söldner-Rembold L. Sonnenschein A. Sopczak M. Sosebee K. Soustruznik B. Spurlock J. Stark 1 V. Stolin D.A. Stoyanova M. Strauss D. Strom L. Stutte L. Suter P. Svoisky M. Takahashi A. Tanasijczuk W. Taylor M. Titov 4 V.V. Tokmenin Y.-T. Tsai D. Tsybychev B. Tuchming 4 C. Tully P.M. Tuts L. Uvarov S. Uvarov S. Uzunyan R. van Kooten W.M. van Leeuwen N. Varelas E.W. Varnes I.A. Vasilyev P. Verdier 7 L.S. Vertogradov M. Verzocchi M. Vesterinen D. Vilanova 4 P. Vint P. Vokac H.D. Wahl M.H.L.S. Wang J. Warchol G. Watts M. Wayne M. Weber L. Welty-Rieger A. White D. Wicke M.R.J. Williams G.W. Wilson S.J. Wimpenny M. Wobisch D.R. Wood T.R. Wyatt Y. Xie C. Xu S. Yacoob R. Yamada W.-C. Yang T. Yasuda Y.A. Yatsunenko Z. Ye H. Yin K. Yip S.W. Youn J. Yu S. Zelitch T. Zhao B. Zhou J. Zhu M. Zielinski D. Zieminska L. Zivkovic
Abstract : The ratio of the cross section for $p\bar{p}$ interactions producing a $Z$ boson and at least one $b$ quark jet to the inclusive $Z+{\rm jet}$ cross section is measured using $4.2\ {\rm fb}^{-1}$ of $p\bar{p}$ collisions collected with the \dzero\ detector at the Fermilab Tevatron collider at $\sqrt{s}=1.96$ TeV. The $Z\rightarrow\ell^+\ell^-$ candidate events with at least one $b$ jet are discriminated from $Z+$ charm and light jet(s) events by a novel technique that exploits the properties of the tracks associated to the jet. The measured ratio is $0.0193\pm0.0027$ for events having a jet with transverse momentum $\pt > 20 \GeV$ and pseudorapidity $|\eta| \leq 2.5$, which is the most precise to date and is consistent with theoretical predictions.
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V.M. Abazov, B. Abbott, B.S. Acharya, M. Adams, T. Adams, et al.. Measurement of the ratio of inclusive cross sections $\sigma(p\bar{p}\rightarrow Z+b{\rm\, jet})/ \sigma(p\bar{p}\rightarrow Z+{\rm jet})$ at $\sqrt{s}=1.96$ TeV. Physical Review D, American Physical Society, 2011, 83, pp.031105. ⟨10.1103/PhysRevD.83.031105⟩. ⟨in2p3-00532569⟩

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