Measurement of beauty production at HERA using events with muons and jets

Summary, in English

A measurement of the beauty production cross section in ep collisions at a centre-of-mass energy of 319 GeV is presented. The data were collected with the H1 detector at the HERA collider in the years 1999-2000. Events are selected by requiring the presence of jets and muons in the final state. Both the long lifetime and the large mass of b-flavoured hadrons are exploited to identify events containing beauty quarks. Differential cross sections are measured in photoproduction, with photon virtualities Q(2) < 1 GeV2, and in deep inelastic scattering, where 2 < Q(2) < 100 GeV2. The results are compared with perturbative QCD calculations to leading and next-to-leading order. The predictions are found to be somewhat lower than the data.

• Author: A Aktas; V Andreev; T Anthonis; S Aplin; A Asmone; A Babaev; S Backovic; J Bahr; A Baghdasaryan; P Baranov; E Barrelet; W Bartel; S Baudrand; S Baumgartner; J Becker; M Beckingham; O Behnke; O Behrendt; A Belousov; C Berger; N Berger; JC Bizot; MO Boenig; V Boudry; J Bracinik; G Brandt; V Brisson; DP Brown; D Bruncko; FW Busser; A Bunyatyan; G Buschhorn; L Bystritskaya; AJ Campbell; S Caron; F Cassol-Brunnner; K Cerny; V Cerny; V Chekelian; JG Contreras; JA Coughlan; BE Cox; G Cozzika; J Cvach; JB Dainton; WD Dau; K Daum; Y de Boer; B Delcourt; R Demirchyan; A De Roeck; K Desch; EA De Wolf; C Diaconu; V Dodonov; A Dubak; G Eckerlin; V Efremenko; S Egli; R Eichler; F Eisele; M Ellerbrock; E Elsen; W Erdmann; S Essenov; PJW Faulkner; L Favart; A Fedotov; R Felst; J Ferencei; L Finke; M Fleischer; P Fleischmann; YH Fleming; G Flucke; A Fomenko; I Foresti; J Formanek; G Franke; G Frising; T Frisson; E Gabathuler; E Garutti; J Gayler; R Gerhards; C Gerlich; S Ghazaryan; S Ginzburgskaya; A Glazov; I Glushkov; L Goerlich; M Goettlich; N Gogitidze; S Gorbounov; C Goyon; C Grab; T Greenshaw; M Gregori; G Grindhammer; C Gwilliam; D Haidt; L Hajduk; J Haller; Magnus Hansson; G Heinzelmann; RCW Henderson; H Henschel; O Henshaw; G Herrera; I Herynek; M Hildebrandt; KH Hiller; D Hoffmann; R Horisberger; A Hovhannisyan; M Ibbotson; M Ismail; M Jacquet; L Janauschek; X Janssen; V Jemanov; Leif Jönsson; DP Johnson; Hannes Jung; M Kapichine; M Karlsson; J Katzy; N Keller; IR Kenyon; C Kiesling; M Klein; C Kleinwort; T Klimkovich; T Kluge; G Knies; Albert Knutsson; V Korbel; P Kostka; R Koutouev; K Krastev; J Kretzschmar; A Kropivnitskaya; J Kroseberg; K Kruger; J Kuckens; MPJ Landon; W Lange; T Lastovicka; P Laycock; A Lebedev; B Leissner; V Lendermann; S Levonian; L Lindfeld; K Lipka; B List; E Lobodzinska; N Loktionova; R Lopez-Fernandez; V Lubimov; AI Lucaci-Timoce; H Lueders; D Luke; T Lux; L Lytkin; A Makankine; N Malden; E Malinovski; S Mangano; P Marage; R Marshall; M Martisikova; HU Martyn; SJ Maxfield; D Meer; A Mehta; K Meier; AB Meyer; H Meyer; J Meyer; S Mikocki; I Milcewicz-Mika; D Milstead; A Mohamed; F Moreau; A Morozov; JV Morris; MU Mozer; K Muller; P Murin; K Nankov; B Naroska; J Naumann; T Naumann; PR Newman; C Niebuhr; A Nikiforov; D Nikitin; G Nowak; M Nozicka; R Oganezov; B Olivier; JE Olsson; Sakar Osman; D Ozerov; V Palichik; T Papadopoulou; C Pascaud; GD Patel; M Peez; E Perez; D Perez-Astudillo; A Perieanu; A Petrukhin; D Pitzl; R Placakyte; B Portheault; B Povh; P Prideaux; N Raicevic; P Reimer; A Rimmer; C Risler; E Rizvi; P Robmann; B Roland; R Roosen; A Rostovtsev; Z Rurikova; S Rusakov; F Salvaire; DPC Sankey; E Sauvan; S Schatzel; FP Schilling; S Schmidt; S Schmitt; C Schmitz; L Schoeffel; A Schoning; V Schroder; HC Schultz-Coulon; C Schwanenberger; K Sedlak; F Sefkow; I Sheviakov; LN Shtarkov; Y Sirois; T Sloan; P Smirnov; Y Soloviev; D South; V Spaskov; A Specka; B Stella; J Stiewe; I Strauch; U Straumann; V Tchoulakov; G Thompson; PD Thompson; F Tomasz; D Traynor; P Truol; I Tsakov; G Tsipolitis; I Tsurin; J Turnau; E Tzamariudaki; M Urban; A Usik; D Utkin; S Valkar; A Valkarova; C Vallee; P Van Mechelen; N Van Remortel; AV Trevino; Y Vazdik; R Weber; D Wegener; C Werner; N Werner; M Wessels; B Wessling; C Wigmore; GG Winter; C Wissing; R Wolf; E Wunsch; S Xella; W Yan; V Yeganov; J Zacek; J Zalesak; Z Zhang; A Zhelezov; A Zhokin; J Zimmermann; H Zohrabyan; F Zomer
• Department/s: Particle and nuclear physics
• Publishing year: 2005
• Language: English
• Pages: 453-467
• Publication/Series: European Physical Journal C. Particles and Fields
• Volume: 41
• Issue: 4
• Links: http://dx.doi.org/10.1140/epjc/s2005-02267-0
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044