Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS

ZEUS collaboration: H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R.; Aggarwal; S. Antonelli; P. Antonioli; A. Antonov; M. Arneodo; V. Aushev; Y.; Aushev; O. Bachynska; A. Bamberger; A.N. Barakbaev; G. Barbagli; G. Bari; F.; Barreiro; D. Bartsch; M. Basile; O. Behnke; J. Behr; U. Behrens; L.; Bellagamba; A. Bertolin; S. Bhadra; M. Bindi; C. Blohm; T. Bold; E.G. Boos,; M. Borodin; K. Borras; D. Boscherini; D. Bot; S.K. Boutle; I. Brock; E.; Brownson; R. Brugnera; N. Bruemmer; A. Bruni; G. Bruni; B. Brzozowska; P.J.; Bussey; J.M. Butterworth; B. Bylsma; A. Caldwell; M. Capua; R. Carlin; C.D.; Catterall; S. Chekanov; J. Chwastowski; J. Ciborowski; R. Ciesielski; L.; Cifarelli; F. Cindolo; A. Contin; A.M. Cooper-Sarkar; N. Coppola; M. Corradi,; F. Corriveau; M. Costa; G. D'Agostini; F. Dal Corso; J. de Favereau; J. del; Peso; R.K. Dementiev; S. De Pasquale; M. Derrick; R.C.E. Devenish; D. Dobur,; B.A. Dolgoshein; A.T. Doyle; V. Drugakov; L.S. Durkin; S. Dusini; Y.; Eisenberg; P.F. Ermolov; A. Eskreys; S. Fang; S. Fazio; J. Ferrando; M.I.; Ferrero; J. Figiel; M. Forrest; B. Foster; S. Fourletov; G. Gach; A. Galas,; E. Gallo; A. Garfagnini; A. Geiser; I. Gialas; L.K. Gladilin; D. Gladkov; C.; Glasman; O. Gogota; Yu.A. Golubkov; P. Goettlicher; I. Grabowska-Bold; J.; Grebenyuk; I. Gregor; G. Grigorescu; G. Grzelak; C. Gwenlan; T. Haas; W.; Hain; R. Hamatsu; J.C. Hart; H. Hartmann; G. Hartner; E. Hilger; D. Hochman,; U. Holm; R. Hori; K. Horton; A. Huettmann; G. Iacobucci; Z.A. Ibrahim; Y.; Iga; R. Ingbir; M. Ishitsuka; H.-P. Jakob; F. Januschek; M. Jimenez; T.W.; Jones; M. Juengst; I. Kadenko; B. Kahle; B. Kamaluddin; S. Kananov; T. Kanno,; U. Karshon; F. Karstens; I.I. Katkov; M. Kaur; P. Kaur; A. Keramidas; L.A.; Khein; J.Y. Kim; D. Kisielewska; S. Kitamura; R. Klanner; U. Klein; E.; Koffeman; D. Kollar; P. Kooijman; Ie. Korol; I.A. Korzhavina; A. Kotanski; U.; Koetz; H. Kowalski; P. Kulinski; O. Kuprash; M. Kuze; V.A. Kuzmin; A. Lee,; B.B. Levchenko; A. Levy; V. Libov; S. Limentani; T.Y. Ling; M. Lisovyi; E.; Lobodzinska; W. Lohmann; B. Loehr; E. Lohrmann; J.H. Loizides; K.R. Long; A.; Longhin; D. Lontkovskyi; O.Yu. Lukina; P. Luzniak; J. Maeda; S. Magill; I.; Makarenko; J. Malka; R. Mankel; A. Margotti; G. Marini; J.F. Martin; A.; Mastroberardino; T. Matsumoto; M.C.K. Mattingly; I.-A. Melzer-Pellmann; S.; Miglioranzi; F. Mohamad Idris; V. Monaco; A. Montanari; J.D. Morris; B.; Musgrave; K. Nagano; T. Namsoo; R. Nania; D. Nicholass; A. Nigro; Y. Ning; U.; Noor; D. Notz; R.J. Nowak; A.E. Nuncio-Quiroz; B.Y. Oh; N. Okazaki; K.; Oliver; K. Olkiewicz; Yu. Onishchuk; O. Ota; K. Papageorgiu; A. Parenti; E.; Paul; J.M. Pawlak; B. Pawlik; P.G. Pelfer; A. Pellegrino; W. Perlanski; H.; Perrey; K. Piotrzkowski; P. Plucinski; N.S. Pokrovskiy; A. Polini; A.S.; Proskuryakov; M. Przybycien; A. Raval; D.D. Reeder; B. Reisert; Z. Ren; J.; Repond; Y.D. Ri; A. Robertson; P. Roloff; E. Ron; I. Rubinsky; M. Ruspa; R.; Sacchi; A. Salii; U. Samson; G. Sartorelli; A.A. Savin; D.H. Saxon; M.; Schioppa; S. Schlenstedt; P. Schleper; W.B. Schmidke; U. Schneekloth; V.; Schoenberg; T. Schoerner-Sadenius; J. Schwartz; F. Sciulli; L.M. Shcheglova,; R. Shehzadi; S. Shimizu; I. Singh; I.O. Skillicorn; W. Slominski; W.H. Smith,; V. Sola; A. Solano; D. Son; V. Sosnovtsev; A. Spiridonov; H. Stadie; L.; Stanco; A. Stern; T.P. Stewart; A. Stifutkin; P. Stopa; S. Suchkov; G.; Susinno; L. Suszycki; J. Sztuk; D. Szuba; J. Szuba; A.D. Tapper; E. Tassi; J.; Terron; T. Theedt; H. Tiecke; K. Tokushuku; O. Tomalak; J. Tomaszewska; T.; Tsurugai; M. Turcato; T. Tymieniecka; C. Uribe-Estrada; M. Vazquez; A.; Verbytskyi; V. Viazlo; N.N. Vlasov; O. Volynets; R. Walczak; W.A.T. Wan; Abdullah; J.J. Whitmore; J. Whyte; L. Wiggers; M. Wing; M. Wlasenko; G. Wolf,; H. Wolfe; K. Wrona; A.G. Yagues-Molina; S. Yamada; Y. Yamazaki; R. Yoshida,; C. Youngman; A.F. Zarnecki; L. Zawiejski; O. Zenaiev; W. Zeuner; B.O.; Zhautykov; N. Zhmak; C. Zhou; A. Zichichi; M. Zolko; D.S. Zotkin; Z. Zulkapli

arXiv:1005.3396·hep-ex·November 21, 2014

Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS

ZEUS collaboration: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R., Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, V. Aushev, Y., Aushev, O. Bachynska, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F., Barreiro, D. Bartsch, M. Basile, O. Behnke, J. Behr

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TL;DR

This paper reports on the measurement of beauty quark production in deep inelastic scattering at HERA, analyzing muon-jet events to determine cross sections and the beauty contribution to the structure function F_2, and comparing results with QCD predictions.

Contribution

First measurement of beauty production in DIS using muon-jet events at ZEUS, extracting cross sections and F_2^bbbar contribution with detailed comparison to QCD models.

Findings

01

Measured total and differential beauty production cross sections.

02

Extracted beauty contribution to F_2 and compared with theory.

03

Results generally agree with QCD predictions.

Abstract

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb^-1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q^2 > 2 Gev^2, and inelasticity, 0.05 < y < 0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F_2 was extracted and is compared to theoretical predictions.

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