Measurement of open beauty production at HERA

Authors
Adloff, C Andreev, V Andrieu, B Arkadov, A Astvatsatourov, A Ayyaz, I Babaev, A Bahr, J Baranov, P Barrelet, E Bartel, W Bassler, U Bate, P Beglarian, A Behnke, O Beier, C Belousov, A Benisch, T Berger, C Bernardi, G Berndt, T Bertrand-Coremans, G Biddulph, P Bizot, JC Boudry, V Braunschweig, W Brisson, V Broker, HB Brown, DP Bruckner, W Bruel, P Bruncko, D Burger, J Busser, FW Bunyatyan, A Burke, S Burrage, A Buschhorn, G Calvet, D Campbell, AJ Cao, J Carli, T Chabert, E Charlet, M Clarke, D Clerbaux, B Collard, C Contreras, JG Coughlan, JA Cousinou, MC Cox, BE Cozzika, G Cvach, J Dainton, JB Dau, WD Daum, K David, M Davidsson, M Delcourt, B Demirchyan, R De Roeck, A De Wolf, EA Diaconu, C Dixon, P Dodonov, V Donovan, KT Dowell, JD Droutskoi, A Duprel, C Ebert, J Eckerlin, G Eckstein, D Efremenko, V Egli, S Eichler, R Eisele, F Eisenhandler, E Elsen, E Erdmann, M Fahr, AB Faulkner, PJW Favart, L Fedotov, A Felst, R Feltesse, J Ferencei, J Ferrarotto, F Ferron, S Fleischer, M Flugge, G Fomenko, A Foresti, I Formanek, J Foster, JM Franke, G Gabathuler, E Gabathuler, K Garvey, J Gassner, J Gayler, J Gerhards, R Ghazaryan, S Glazov, A Goerlich, L Gogitidze, N Goldberg, M Gorelov, I Grab, C Grassler, H Greenshaw, T Griffiths, RK Grindhammer, G Hadig, T Haidt, D Hajduk, L Haustein, V Haynes, WJ Heinemann, B Heinzelmann, G Henderson, RCW Hengstmann, S Henschel, H Heremans, R Herrera, G Herynek, I Hilgers, M Hiller, KH Hilton, CD Hladky, J Hoting, P Hoffmann, D Horisberger, R Hurling, S Ibbotson, M Jacquet, M Jaffre, M Janauschek, L Jansen, DM Janssen, X Jonsson, L Johnson, DP Zhokin, A Jones, M Jung, H Kastli, HK Kant, D Kapichine, M Karlsson, M Karschnick, O Kaufmann, O Kausch, M Keil, F Keller, N Kenyon, IR Kermiche, S Kiesling, C Klein, M Kleinwort, C Knies, G Kolanoski, H Kolya, SD Korbel, V Kostka, P Kotelnikov, SK Krasny, MV Krehbiel, H Kroseberg, J Krucker, D Kruger, K Kupper, A Kuhr, T Kurca, T Lachnit, W Lahmann, R Lamb, D Landon, MPJ Lange, W Langenegger, U Lebedev, A Lehner, F Lemaitre, V Lemrani, R Lendermann, V Levonian, S Lindstroem, M Lubimov, V Lobo, G Lobodzinska, E Luders, S Luke, D Lytkin, L Magnussen, N Mahlke-Kruger, H Malden, N Malinovski, E Malinovski, I Maracek, R Marage, P Marks, J Marshall, R Martyn, HU Martyniak, J Maxfield, SJ McMahon, TR Mehta, A Meier, K Merkel, P Metlica, F Meyer, A Meyer, H Meyer, J Meyer, PO Mikocki, S Milstead, D Mohr, R Mohrdieck, S Mondragon, MN Moreau, F Morozov, A Morris, JV Muller, D Muller, K Murin, P Nagovizin, V Naroska, B Naumann, J Naumann, T Negri, I Newman, PR Nguyen, HK Nicholls, TC Niebergall, F Niebuhr, C Nix, O Nowak, G Nunnemann, T Olsson, JE Usik, A Ozerov, D Palmen, P Panassik, V Pascaud, C Passaggio, S Patel, GD Pawletta, H Perez, E Phillips, JP Pitzl, D Poschl, R Potashnikova, I Povh, B Rabbertz, K Radel, G Rauschenberger, J Reimer, P Reisert, B Reyna, D Riess, S Rizvi, E Robmann, P Roosen, R Rostovtsev, A Royon, C Rusakov, S Rybicki, K Sankey, DPC Scheins, J Schilling, FP Schleif, S Schleper, P Schmidt, D Schmidt, D Schoeffel, L Schorner, T Schroder, V Schultz-Coulon, HC Sefkow, F Shekelyan, V Sheviakov, I Shtarkov, LN Siegmon, G Sirois, Y Sloan, T Smirnov, P Smith, M Solochenko, V Soloviev, Y Spaskov, V Specka, A Spitzer, H Stamen, R Steinhart, J Stella, B Stellberger, A Stiewe, J Straumann, U Struczinski, W Sutton, JP Swart, M Tasevsky, M Tchernyshov, V Tchetchelnitski, S Thompson, G Thompson, PD Tobien, N Todenhagen, R Traynor, D Truol, P Tsipolitis, G Turnau, J Turney, J Tzamariudaki, E Udluft, S Valkar, S Valkarova, A Vallee, C Van Haecke, A Van Mechelen, P Vazdik, Y Villet, G von Dombrowski, S Wacker, K Wallny, R Walter, T Waugh, B Weber, G Weber, M Wegener, D Wegner, A Wengler, T Werner, M West, LR White, G Wiesand, S Wilksen, T Winde, M Winter, GG Wissing, C Wobisch, M Wollatz, H Wunsch, E Zacek, J Zalesak, J Zhang, Z Zini, P Zomer, F Zsembery, J zur Nedden, M
Citation
C. Adloff et al., Measurement of open beauty production at HERA, PHYS LETT B, 467(1-2), 1999, pp. 156-164
Citations number
34
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
467
Issue
1-2
Year of publication
1999
Pages
156 - 164
Database
ISI
SICI code
0370-2693(19991111)467:1-2<156:MOOBPA>2.0.ZU;2-P
Abstract
The first observation of open b production in ep collisions is reported. An event sample containing muons and jets has been selected which is enriched in semileptonic b quark decays. The visible cross section sigma(ep --> b ( b) over bar X --> mu X') for Q(2) < 1 GeV2, 0.1 < y < 0.8 is measured to be 0.176 +/- 0.016(stat.)(+0.026)(-0.017)(syst.) nb for the muons to be detec ted in the range 35 degrees < theta(mu) < 130 degrees and p(perpendicular t o)(mu) > 2.0GeV in the laboratory frame. The expected visible cross section based on a NLO QCD calculation is 0.104 +/- 0.017nb. The cross sections fo r electroproduction with Q(2) < 1GeV(2) and photoproduction are derived fro m the data and found to be sigma(ep --> eb (b) over bar X) = 7.1 +/- 0.6(st at.)(-1.3)(+1.5)(syst.)nb and sigma(gamma p --> b (b) over bar X) = 111+/- 10(stat.)(-20)(+23) (syst.) nb at an average [W-gamma p] similar to 180GeV, respectively. (C) 1999 Published by Elsevier Science B.V. All rights reser ved.