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Article Dans Une Revue Physics Letters B Année : 2011

Measurement of the Upsilon(1S) Production Cross-Section in pp Collisions at sqrt(s) = 7 TeV in ATLAS

G. Aad , S. Albrand (1) , M.L. Andrieux (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (1) , P. de Saintignon (1) , P.A. Delsart (1) , J. Donini (1) , Daniel Dzahini (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) , C. Weydert (1) , C. Biscarat (2) , E. Cogneras (2) , G. Rahal (2) , H. Bachacou (3) , F. Bauer (3) , N. Besson (3) , N.M. Bolnet (3) , M. Boonekamp (3) , L. Chevalier (3) , J. Ernwein (3) , A.I. Etienvre (3) , A. Formica (3) , L. Gauthier (3) , F. Giraud (3) , C. Guyot (3) , S. Hassani (3) , W. Kozanecki (3) , E. Lancon (3) , J.F. Laporte (3) , E. Le Menedeu (3) , M. Legendre (3) , B. Mansoulie (3) , J.-P. Meyer (3) , N. Morange (3) , E. Mountricha (3) , R. Nicolaidou (3) , A. Ouraou (3) , D.M. Pomarede (3) , B. Resende (3) , C.R. Royon (3) , Ph. Schune (3) , J. Schwindling (3) , O. Simard (3) , M. Virchaux (3) , C. Xu (3) , J. Yu (3) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , Reina Coromoto Camacho Toro (4) , Diane Cinca (5) , R. Febbraro (4) , N. Ghodbane (4) , C. Guicheney (4) , D. Pallin (4) , F. Podlyski (4) , C. Santoni (4) , L. P. Says (4) , F. Vazeille (4) , H. Abreu (6) , N. Andari (6) , C. Arnault (6) , E. Augé (6) , P. Barrillon (6) , M. Benoit (6) , S. Binet (6) , J.-B. Blanchard (6) , C. Bourdarios (6) , D. Breton (6) , C. Collard (6) , C. de La Taille (6) , J.B. de Vivie de Regie (6) , Sara Diglio (6) , L. Duflot (6) , M. Escalier (6) , L. Fayard (6) , D. Fournier (6) , J.-F. Grivaz (6) , M. Heller (6) , S. Henrot-Versillé (6) , J. Hrivnac (6) , L. Iconomidou-Fayard (6) , J. Idarraga (6) , M. Kado (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) , X. Ruan (6) , G. Rybkin (6) , J.B. Sauvan (6) , J. Schaarschmidt (6) , A.C. Schaffer (6) , L. Serin (6) , S. Simion (6) , R. Tanaka (6) , J.J. Veillet (6) , I. Vukotic (6) , F. Wicek (6) , D. Zerwas (6) , Zhiqing Zhang (6) , S. Aoun (7) , C. P. Bee (7) , C. Benchouk (7) , K. Bernardet (7) , N. Bousson (7) , J. C. Clemens (7) , Y. Coadou (7) , P. Delpierre (7) , F. Djama (7) , F. Etienne (7) , L. Feligioni (7) , F. Henry- Couannier (7) , D. Hoffmann (7) , F. Hubaut (7) , E. B. F. G. Knoops (7) , E. Le Guirriec (7) , B. Li (7) , E. Monnier (7) , J. Odier (7) , E. Petit (7) , P. Pralavorio (7) , Z. Qian (7) , A. Rozanov (7) , M. Talby (7) , N. Tannoury (7) , S. Tisserant (7) , J. Toth (7) , F. Touchard (7) , L. Vacavant (7) , T. Beau (8) , S. Bordoni (8) , G. Calderini (8) , P. Cavalleri (8) , E. Chareyre (8) , S. de Cecco (8) , F. Derue (8) , D. Imbault (8) , M.W. Krasny (8) , D. Lacour (8) , B. Laforge (8) , O. Le Dortz (8) , J. Lellouch (8) , G. Marchiori (8) , I. Nikolic-Audit (8) , J. Ocariz (8) , M. Ridel (8) , L. Roos (8) , Ph. Schwemling (8) , Timothée Theveneaux-Pelzer (8) , S. Trincaz-Duvoid (8) , T.N. Trinh (8) , F. Vannucci (9) , L. Aperio Bella (10) , B. Aubert (10) , N. Berger (10) , J. Colas (10) , L. Di Ciaccio (10) , T.K.O. Doan (10) , S. Elles (10) , P. Ghez (10) , M. Gouanère (10) , C. Goy (10) , T. Guillemin (10) , L. Helary (10) , T. Hryn'Ova (10) , G. Ionescu (10) , A. Jérémie (10) , S. Jézéquel (10) , M. Kataoka (10) , J. Labbe (10) , R. Lafaye (10) , J. Leveque (10) , N. Massol (10) , P. Perrodo (10) , H. Przysiezniak (10) , G. Sauvage (10) , E. Sauvan (10) , T. Todorov (10) , D. Tsionou (10) , I. Wingerter-Seez (10) , R. Zitoun (10) , Y. Zolnierowski (10) , M. Kuna (8) , Sandrine Laplace (8, 10) , H. Torres (8)
G. Aad
E. Cogneras
S. Calvet
Diane Cinca
E. Augé
C. Collard
Sara Diglio
D. Rousseau
Zhiqing Zhang
  • Fonction : Auteur
  • PersonId : 829631
Y. Coadou
F. Vannucci
  • Fonction : Auteur
N. Berger
C. Goy
T. Hryn'Ova

Résumé

A measurement of the cross-section for Upsilon(1S) -> mu+mu- production in proton-proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the Upsilon(1S) transverse momentum in two bins of rapidity, |y(Upsilon1S)| < 1.2 and 1.2 < |y(Upsilon1S)| < 2.4. The measurement requires that both muons have transverse momentum pT(mu) > 4 GeV and pseudorapidity |eta(mu)| < 2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarization. The results are based on an integrated luminosity of 1.13 pb-1, collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet-model.

Dates et versions

in2p3-00604062 , version 1 (28-06-2011)

Identifiants

Citer

G. Aad, S. Albrand, M.L. Andrieux, B. Clement, J. Collot, et al.. Measurement of the Upsilon(1S) Production Cross-Section in pp Collisions at sqrt(s) = 7 TeV in ATLAS. Physics Letters B, 2011, 705, pp.9-27. ⟨10.1016/j.physletb.2011.09.092⟩. ⟨in2p3-00604062⟩
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