Measurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA

Summary, in English

The cross section for ep -> eb (b) over barX in photoproduction is measured with the H1 detector at the ep-collider HERA. The decay channel b (b) over bar -> eeX' is selected by identifying the semi-electronic decays of the b-quarks. The total production cross section is measured in the kinematic range given by the photon virtuality Q(2) <= 1 GeV2, the inelasticity 0.05 <= y <= 0.65 and the pseudorapidity of the b-quarks vertical bar eta(b)vertical bar, vertical bar eta((b) over bar)vertical bar <= 2. The differential production cross section is measured as a function of the average transverse momentum of the beauty quarks < P-T(b)> down to the threshold. The results are compared to next-to-leading-order QCD predictions.

• Author: F. D. Aaron; C. Alexa; V. Andreev; S. Backovic; A. Baghdasaryan; S. Baghdasaryan; E. Barrelet; W. Bartel; K. Begzsuren; A. Belousov; P. Belov; J. C. Bizot; V. Boudry; I. Bozovic-Jelisavcic; J. Bracinik; G. Brandt; M. Brinkmann; V. Brisson; D. Britzger; D. Bruncko; A. Bunyatyan; A. Bylinkin; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; F. Ceccopieri; K. Cerny; V. Cerny; V. Chekelian; J. G. Contreras; J. A. Coughlan; J. Cvach; J. B. Dainton; K. Daum; B. Delcourt; J. Delvax; E. A. DeWolf; C. Diaconu; M. Dobre; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; S. Egli; A. Eliseev; E. Elsen; L. Favart; A. Fedotov; R. Felst; J. Feltesse; J. Ferencei; D. -J. Fischer; M. Fleischer; A. Fomenko; E. Gabathuler; J. Gayler; S. Ghazaryan; A. Glazov; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; G. Grindhammer; S. Habib; D. Haidt; R. C. W. Henderson; E. Hennekemper; H. Henschel; M. Herbst; G. Herrera; M. Hildebrandt; K. H. Hiller; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; M. Jacquet; X. Janssen; Leif Jönsson; A. W. Jung; H. Jung; M. Kapichine; I. R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; R. Kogler; P. Kostka; M. Kraemer; J. Kretzschmar; K. Krueger; M. P. J. Landon; W. Lange; G. Lastovicka-Medin; P. Laycock; A. Lebedev; V. Lendermann; S. Levonian; K. Lipka; B. List; J. List; B. Lobodzinski; R. Lopez-Fernandez; V. Lubimov; E. Malinovski; H. -U. Martyn; S. J. Maxfield; A. Mehta; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; I. Milcewicz-Mika; F. Moreau; A. Morozov; J. V. Morris; K. Mueller; Th. Naumann; P. R. Newman; C. Niebuhr; D. Nikitin; G. Nowak; K. Nowak; B. Olivier; J. E. Olsson; D. Ozerov; P. Pahl; V. Palichik; M. Pandurovic; C. Pascaud; G. D. Patel; E. Perez; A. Petrukhin; I. Picuric; H. Pirumov; D. Pitzl; R. Placakyte; B. Pokorny; R. Polifka; B. Povh; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; J. E. Ruiz Tabasco; S. Rusakov; D. Salek; D. P. C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; L. Schoeffel; A. Schoening; H. -C. Schultz-Coulon; F. Sefkow; L. N. Shtarkov; S. Shushkevich; T. Sloan; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; Z. Staykova; M. Steder; B. Stella; G. Stoicea; U. Straumann; T. Sykora; P. D. Thompson; T. H. Tran; D. Traynor; P. Truoel; I. Tsakov; B. Tseepeldorj; J. Turnau; A. Valkarova; C. Vallee; P. Van Mechelen; Y. Vazdik; D. Wegener; E. Wuensch; J. Zacek; J. Zalesak; Z. Zhang; A. Zhokin; R. Zlebcik; H. Zohrabyan; F. Zomer
• Department/s: Particle and nuclear physics
• Publishing year: 2012
• Language: English
• Publication/Series: European Physical Journal C. Particles and Fields
• Volume: 72
• Issue: 10
• Links: http://dx.doi.org/10.1140/epjc/s10052-012-2148-1
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044