Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector

G. Aad; S. Albrand; M.L. Andrieux; Q. Buat; B. Clement; J. Collot; S. Crépé-Renaudin; B. Dechenaux; T. Delemontex; P.A. Delsart; M.H. Genest; J.Y. Hostachy; E. Laisne; F. Ledroit-Guillon; A. Lleres; A. Lucotte; F. Malek; P. Martin; F. Polci; J. Stark; X. Sun; B. Trocmé; J. Wang; C. Weydert; C. Biscarat; E. Cogneras; G. Rahal; D. Boumediene; Emmanuel Busato; D. Calvet; S. Calvet; Reina Coromoto Camacho Toro; Diane Cinca; J. Donini; R. Febbraro; N. Ghodbane; C. Guicheney; H. Liao; D. Pallin; Daniela Paredes Hernández; F. Podlyski; C. Santoni; L. P. Says; F. Vazeille; S. Aoun; C.P. Bee; C. Bertella; N. Bousson; J.C. Clémens; Y. Coadou; F. Djama; F. Etienne; L. Feligioni; F. Henry-Couannier; D. Hoffmann; F. Hubaut; E. B. F. G. Knoops; E. Le Guirriec; B. Li; J. Maurer; E. Monnier; J. Odier; P. Pralavorio; Z. Qian; A. Rozanov; M. Talby; N. Tannoury; S. Tisserant; J. Toth; F. Touchard; L. Vacavant; S. Abdel Khalek; H. Abreu; N. Andari; C. Arnault; E. Augé; P. Barrillon; M. Benoit; S. Binet; C. Bourdarios; C. de la Taille; J.B. de Vivie de Regie; L. Duflot; M. Escalier; L. Fayard; D. Fournier; J.-F. Grivaz; S. Henrot-Versillé; J. Hrivnac; L. Iconomidou-Fayard; J. Idarraga; M. Kado; N. Lorenzo Martinez; A. Lounis; N. Makovec; P. Matricon; F. Niedercorn; L. Poggioli; P. Puzo; A. Renaud; D. Rousseau; G. Rybkin; J.B. Sauvan; J. Schaarschmidt; A.C. Schaffer; E. Scifo; L. Serin; S. Simion; R. Tanaka; M. Teinturier; J.J. Veillet; I. Vukotic; F. Wicek; D. Zerwas; Zhiqing Zhang; L. Aperio Bella; B. Aubert; N. Berger; J. Colas; M. Delmastro; L. Di Ciaccio; T.K.O. Doan; S. Elles; C. Goy; L. Helary; T. Hryn'Ova; A. Jérémie; S. Jézéquel; M. Kataoka; J. Labbe; R. Lafaye; J. Leveque; V.P. Lombardo; N. Massol; P. Perrodo; E. Petit; H. Przysiezniak; E. Richter-Was; G. Sauvage; E. Sauvan; M. Schwoerer; T. Todorov; D. Tsionou; I. Wingerter-Seez; R. Zitoun; Y. Zolnierowski

doi:10.1103/PhysRevLett.109.071801

Journal articles

Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector

G. Aad S. Albrand ¹ M.L. Andrieux ¹ Q. Buat ¹ B. Clement ¹ J. Collot ¹ S. Crépé-Renaudin ¹ B. Dechenaux ¹ T. Delemontex ¹ P.A. Delsart ¹ M.H. Genest ¹ J.Y. Hostachy ¹ E. Laisne ¹ F. Ledroit-Guillon ¹ A. Lleres ¹ A. Lucotte ¹ F. Malek ¹ P. Martin ¹ F. Polci ¹ J. Stark ¹ X. Sun ¹ B. Trocmé ¹ J. Wang ¹ C. Weydert ¹ C. Biscarat ² E. Cogneras ² G. Rahal ² D. Boumediene ³ Emmanuel Busato ³ D. Calvet ³ S. Calvet ³ Reina Coromoto Camacho Toro ³ Diane Cinca ⁴ J. Donini ³ R. Febbraro ³ N. Ghodbane ³ C. Guicheney ³ H. Liao ³ D. Pallin ³ Daniela Paredes Hernández ³ F. Podlyski ³ C. Santoni ³ L. P. Says ³ F. Vazeille ³ S. Aoun ⁵ C.P. Bee ⁵ C. Bertella ⁵ N. Bousson ⁵ J.C. Clémens ⁵ Y. Coadou ⁵ F. Djama ⁵ F. Etienne ⁵ L. Feligioni ⁵ F. Henry-Couannier ⁵ D. Hoffmann ⁵ F. Hubaut ⁵ E. B. F. G. Knoops ⁵ E. Le Guirriec ⁵ B. Li ⁵ J. Maurer ⁵ E. Monnier ⁵ J. Odier ⁵ P. Pralavorio ⁵ Z. Qian ⁵ A. Rozanov ⁵ M. Talby ⁵ N. Tannoury ⁵ S. Tisserant ⁵ J. Toth ⁵ F. Touchard ⁵ L. Vacavant ⁵ S. Abdel Khalek ⁶ H. Abreu ⁶ N. Andari ⁶ C. Arnault ⁶ E. Augé ⁶ P. Barrillon ⁶ M. Benoit ⁶ S. Binet ⁶ C. Bourdarios ⁶ C. de la Taille ⁶ J.B. de Vivie de Regie ⁶ L. Duflot ⁶ M. Escalier ⁶ L. Fayard ⁶ D. Fournier ⁶ J.-F. Grivaz ⁶ S. Henrot-Versillé ⁶ J. Hrivnac ⁶ L. Iconomidou-Fayard ⁶ J. Idarraga ⁶ M. Kado ⁶ N. Lorenzo Martinez ⁶ A. Lounis ⁶ N. Makovec ⁶ P. Matricon ⁶ F. Niedercorn ⁶ L. Poggioli ⁶ P. Puzo ⁶ A. Renaud ⁶ D. Rousseau ⁶ G. Rybkin ⁶ J.B. Sauvan ⁶ J. Schaarschmidt ⁶ A.C. Schaffer ⁶ E. Scifo ⁶ L. Serin ⁶ S. Simion ⁶ R. Tanaka ⁶ M. Teinturier ⁶ J.J. Veillet ⁶ I. Vukotic ⁶ F. Wicek ⁶ D. Zerwas ⁶ Zhiqing Zhang ⁶ L. Aperio Bella ⁷ B. Aubert ⁷ N. Berger ⁷ J. Colas ⁷ M. Delmastro ⁷ L. Di Ciaccio ⁷ T.K.O. Doan ⁷ S. Elles ⁷ C. Goy ⁷ L. Helary ⁷ T. Hryn'Ova ⁷ A. Jérémie ⁷ S. Jézéquel ⁷ M. Kataoka ⁷ J. Labbe ⁷ R. Lafaye ⁷ J. Leveque ⁷ V.P. Lombardo ⁷ N. Massol ⁷ P. Perrodo ⁷ E. Petit ⁷ H. Przysiezniak ⁷ E. Richter-Was ⁷ G. Sauvage ⁷ E. Sauvan ⁷ M. Schwoerer ⁷ T. Todorov ⁷ D. Tsionou ⁷ I. Wingerter-Seez ⁷ R. Zitoun ⁷ Y. Zolnierowski ⁷

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

2 CC-IN2P3 - Centre de Calcul de l'IN2P3

3 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

4 Laboratoire de Physique Corpusculaire

LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

5 CPPM - Centre de Physique des Particules de Marseille

6 LAL - Laboratoire de l'Accélérateur Linéaire

7 LAPP - Laboratoire d'Annecy de Physique des Particules

Abstract : A search is reported for the pair production of a new quark, b', with at least one b' decaying to a Z boson and a bottom quark. The data, corresponding to 2.0 fb^-1 of integrated luminosity, were collected from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. Using events with a b-tagged jet and a Z boson reconstructed from opposite-charge electrons, the mass distribution of large transverse momentum b' candidates is tested for an enhancement. No evidence for a b' signal is detected in the observed mass distribution, resulting in the exclusion at 95% confidence level of b' quarks with masses m_{b'} < 400 GeV that decay entirely via b' to Z+b. In the case of a vector-like singlet b' mixing solely with the third Standard Model generation, masses m_{b'} < 358 GeV are excluded.

Document type :

Journal articles

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

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http://hal.in2p3.fr/in2p3-00685808
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Submitted on : Friday, April 6, 2012 - 9:35:24 AM
Last modification on : Thursday, December 16, 2021 - 2:11:29 PM

Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector

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Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector

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