Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

G. Aad; S. Albrand; M.L. Andrieux; Q. Buat; B. Clement; J. Collot; S. Crépé-Renaudin; 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; F. Podlyski; C. Santoni; L. P. Says; F. Vazeille; T. Beau; S. Bordoni; G. Calderini; A. Camard; P. Cavalleri; E. Chareyre; S. de Cecco; F. Derue; D. Imbault; M.W. Krasny; D. Lacour; B. Laforge; O. Le Dortz; J. Lellouch; G. Marchiori; I. Nikolic-Audit; J. Ocariz; M. Ridel; L. Roos; Ph. Schwemling; Timothée Theveneaux-Pelzer; S. Trincaz-Duvoid; T.N. Trinh; F. Vannucci; H. Abreu; N. Andari; C. Arnault; E. Augé; P. Barrillon; M. Benoit; S. Binet; J.-B. Blanchard; C. Bourdarios; D. Breton; C. Collard; C. de la Taille; J.B. de Vivie de Regie; S. Diglio; L. Duflot; M. Escalier; A.C. Falou; L. Fayard; D. Fournier; J.-F. Grivaz; M. Heller; S. Henrot-Versillé; J. Hrivnac; L. Iconomidou-Fayard; J. Idarraga; M. Kado; A. Lounis; N. Makovec; P. Matricon; F. Niedercorn; L. Poggioli; P. Puzo; A. Renaud; D. Rousseau; X. Ruan; G. Rybkin; J.B. Sauvan; J. Schaarschmidt; A.C. Schaffer; L. Serin; S. Simion; R. Tanaka; 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; S. Aoun; C. P. Bee; C. Benchouk; 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

doi:10.1103/PhysRevLett.108.152001

Journal articles

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

G. Aad S. Albrand ¹ M.L. Andrieux ¹ Q. Buat ¹ B. Clement ¹ J. Collot ¹ S. Crépé-Renaudin 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 F. Podlyski ³ C. Santoni ³ L. P. Says ³ F. Vazeille ³ T. Beau ⁵ S. Bordoni ⁵ G. Calderini ⁵ A. Camard ⁵ P. Cavalleri ⁵ E. Chareyre ⁵ S. de Cecco ⁵ F. Derue ⁵ D. Imbault ⁵ M.W. Krasny ⁵ D. Lacour ⁵ B. Laforge ⁵ O. Le Dortz ⁵ J. Lellouch ⁵ G. Marchiori ⁵ I. Nikolic-Audit ⁵ J. Ocariz ⁵ M. Ridel ⁵ L. Roos ⁵ Ph. Schwemling ⁵ Timothée Theveneaux-Pelzer ⁵ S. Trincaz-Duvoid ⁵ T.N. Trinh ⁵ F. Vannucci ⁶ H. Abreu ⁷ N. Andari ⁷ C. Arnault ⁷ E. Augé ⁷ P. Barrillon ⁷ M. Benoit S. Binet ⁷ J.-B. Blanchard ⁷ C. Bourdarios ⁷ D. Breton ⁷ C. Collard C. de la Taille ⁷ J.B. de Vivie de Regie ⁷ S. Diglio ⁷ L. Duflot ⁷ M. Escalier ⁷ A.C. Falou ⁷ L. Fayard ⁷ D. Fournier ⁷ J.-F. Grivaz ⁷ M. Heller ⁷ S. Henrot-Versillé ⁷ J. Hrivnac ⁷ L. Iconomidou-Fayard ⁷ J. Idarraga ⁷ M. Kado ⁷ A. Lounis ⁷ N. Makovec ⁷ P. Matricon ⁷ F. Niedercorn ⁷ L. Poggioli ⁷ P. Puzo ⁷ A. Renaud ⁷ D. Rousseau ⁷ X. Ruan ⁷ G. Rybkin ⁷ J.B. Sauvan ⁷ J. Schaarschmidt ⁷ A.C. Schaffer ⁷ L. Serin ⁷ S. Simion ⁷ R. Tanaka ⁷ J.J. Veillet ⁷ I. Vukotic ⁷ F. Wicek ⁷ D. Zerwas ⁷ Zhiqing Zhang ⁷ L. Aperio Bella ⁸ B. Aubert ⁸ N. Berger ⁸ J. Colas ⁸ M. Delmastro ⁸ L. Di Ciaccio ⁸ T.K.O. Doan ⁸ S. Elles ⁸ C. Goy ⁸ L. Helary ⁸ T. Hryn'Ova ⁸ A. Jérémie ⁸ S. Jézéquel ⁸ M. Kataoka ⁸ J. Labbe ⁸ R. Lafaye ⁸ J. Leveque ⁸ V.P. Lombardo ⁸ N. Massol ⁸ P. Perrodo ⁸ E. Petit ⁸ H. Przysiezniak ⁸ E. Richter-Was ⁸ G. Sauvage ⁸ E. Sauvan ⁸ M. Schwoerer ⁸ T. Todorov ⁸ D. Tsionou ⁸ I. Wingerter-Seez ⁸ R. Zitoun ⁸ Y. Zolnierowski ⁸ S. Aoun ⁹ C. P. Bee ⁹ C. Benchouk ⁹ C. Bertella ⁹ N. Bousson ⁹ J. C. Clémens ⁹ Y. Coadou ⁹ F. Djama ⁹ F. Etienne ⁹ L. Feligioni ⁹ F. Henry-Couannier ⁹ D. Hoffmann ⁹ F. Hubaut ⁹ E. B. F. G. Knoops ⁹ E. Le Guirriec ⁹ B. Li ⁹ J. Maurer ⁹ E. Monnier ⁹ J. Odier ⁹ P. Pralavorio ⁹ Z. Qian ⁹ A. Rozanov ⁹ M. Talby ⁹ N. Tannoury ⁹ S. Tisserant ⁹ J. Toth ⁹ F. Touchard ⁹ L. Vacavant ⁹

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 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

6 APC - Neutrinos

LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies, APC (UMR_7164) - AstroParticule et Cosmologie

7 LAL - Laboratoire de l'Accélérateur Linéaire

8 LAPP - Laboratoire d'Annecy de Physique des Particules

9 CPPM - Centre de Physique des Particules de Marseille

Abstract : The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.539+/-0.004 (stat.)+/-0.008 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.

Document type :

Journal articles

Domain :

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

Complete list of metadatas

http://hal.in2p3.fr/in2p3-00654499
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, December 22, 2011 - 8:29:26 AM
Last modification on : Saturday, November 28, 2020 - 12:58:03 PM

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

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Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

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