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Titolo:
Measurement of open beauty production at HERA
Autore:
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;
Indirizzi:
Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany Berg Univ Gesamthsch Wuppertal Wuppertal Germany ys, Wuppertal, Germany DESY, Zeuthen, Germany DESY Zeuthen GermanyDESY, Zeuthen, Germany ETH Zurich, Inst Teilchenphys, Zurich, Switzerland ETH Zurich Zurich Switzerland h, Inst Teilchenphys, Zurich, Switzerland Univ Zurich, Inst Phys, Zurich, Switzerland Univ Zurich Zurich Switzerland v Zurich, Inst Phys, Zurich, Switzerland Humboldt Univ, Inst Phys, Berlin, Germany Humboldt Univ Berlin GermanyHumboldt Univ, Inst Phys, Berlin, Germany Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, Germany Rhein WestfalTH Aachen Aachen Germany D-5100 1, D-5100 Aachen, Germany Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany Rhein WestfalTH Aachen Aachen Germany D-5100 3, D-5100 Aachen, Germany Univ Birmingham, Sch Phys & Space Res, Birmingham, W Midlands, England Univ Birmingham Birmingham W Midlands England ngham, W Midlands, England Univ Instelling Antwerp, B-2610 Wilrijk, Belgium Univ Instelling Antwerp Wilrijk Belgium B-2610 , B-2610 Wilrijk, Belgium VUB, ULB, Inter Univ Inst High Energies, Brussels, Belgium VUB Brussels Belgium , Inter Univ Inst High Energies, Brussels, Belgium Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England Rutherford Appleton Lab Didcot Oxon England OX11 0QX 1 0QX, Oxon, England Inst Nucl Phys, Krakow, Poland Inst Nucl Phys Krakow PolandInst Nucl Phys, Krakow, Poland Univ Dortmund, Inst Phys, D-4600 Dortmund, Germany Univ Dortmund Dortmund Germany D-4600 nst Phys, D-4600 Dortmund, Germany Joint Nucl Res Inst, Dubna, Russia Joint Nucl Res Inst Dubna RussiaJoint Nucl Res Inst, Dubna, Russia CEA, DAPNIA, DSM, Gif Sur Yvette, France CEA Gif Sur Yvette FranceCEA, DAPNIA, DSM, Gif Sur Yvette, France DESY, D-2000 Hamburg, Germany DESY Hamburg Germany D-2000DESY, D-2000 Hamburg, Germany Univ Hamburg, Inst Expt Phys 2, Hamburg, Germany Univ Hamburg Hamburg Germany amburg, Inst Expt Phys 2, Hamburg, Germany Max Planck Inst Kernphys, D-69117 Heidelberg, Germany Max Planck Inst Kernphys Heidelberg Germany D-69117 Heidelberg, Germany Univ Heidelberg, Inst Phys, D-6900 Heidelberg, Germany Univ Heidelberg Heidelberg Germany D-6900 ys, D-6900 Heidelberg, Germany Univ Heidelberg, Inst Hochenergiephys, Heidelberg, Germany Univ Heidelberg Heidelberg Germany Hochenergiephys, Heidelberg, Germany Univ Kiel, Inst Expt & Angew Phys, Kiel, Germany Univ Kiel Kiel GermanyUniv Kiel, Inst Expt & Angew Phys, Kiel, Germany Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia Slovak Acad Sci Kosice Slovakia 04353 Expt Phys, Kosice 04353, Slovakia Univ Lancaster, Sch Phys & Chem, Lancaster, England Univ Lancaster Lancaster England r, Sch Phys & Chem, Lancaster, England Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England Univ Liverpool Liverpool Merseyside England L69 3BX , Merseyside, England Univ London Queen Mary & Westfield Coll, London E1 4NS, England Univ London Queen Mary & Westfield Coll London England E1 4NS S, England Univ Lund, Dept Phys, Lund, Sweden Univ Lund Lund SwedenUniv Lund, Dept Phys, Lund, Sweden Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England Univ Manchester Manchester Lancs England ron, Manchester, Lancs, England Univ Aix Marseille 2, CPPM, IN2P3, CNRS, F-13284 Marseille 07, France UnivAix Marseille 2 Marseille France 07 S, F-13284 Marseille 07, France Inst Theoret & Expt Phys, Moscow 117259, Russia Inst Theoret & Expt Phys Moscow Russia 117259 hys, Moscow 117259, Russia Lebedev Phys Inst, Moscow, Russia Lebedev Phys Inst Moscow RussiaLebedev Phys Inst, Moscow, Russia Max Planck Inst Phys, D-80805 Munich, Germany Max Planck Inst Phys Munich Germany D-80805 hys, D-80805 Munich, Germany Univ Paris 11, LAL, IN2P3, CNRS, Orsay, France Univ Paris 11 Orsay France iv Paris 11, LAL, IN2P3, CNRS, Orsay, France IN2P3, Ecole Polytech, LPNHE, CNRS, Palaiseau, France IN2P3 Palaiseau France , Ecole Polytech, LPNHE, CNRS, Palaiseau, France Univ Paris 06, LPNHE, IN2P3, CNRS, Paris, France Univ Paris 06 Paris France Paris 06, LPNHE, IN2P3, CNRS, Paris, France Univ Paris 07, LPNHE, IN2P3, CNRS, Paris, France Univ Paris 07 Paris France Paris 07, LPNHE, IN2P3, CNRS, Paris, France Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic Acad Sci Czech Republ Prague Czech Republic hys, Prague, Czech Republic Charles Univ, Nucl Ctr, Prague, Czech Republic Charles Univ Prague CzechRepublic iv, Nucl Ctr, Prague, Czech Republic Univ Roma 3, Ist Nazl Fis Nucl, Rome, Italy Univ Roma 3 Rome ItalyUniv Roma 3, Ist Nazl Fis Nucl, Rome, Italy Univ Roma 3, Dipartimento Fis, Rome, Italy Univ Roma 3 Rome ItalyUniv Roma 3, Dipartimento Fis, Rome, Italy Paul Scherrer Inst, Villigen, Switzerland Paul Scherrer Inst Villigen Switzerland rer Inst, Villigen, Switzerland CINVESTAV, Dept Fis Aplicada, Merida, Venezuela CINVESTAV Merida Venezuela VESTAV, Dept Fis Aplicada, Merida, Venezuela Berg Univ Gesamthsch Wuppertal, Rechenzentrum, Wuppertal, Germany Berg Univ Gesamthsch Wuppertal Wuppertal Germany um, Wuppertal, Germany Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany Univ Karlsruhe Karlsruhe Germany D-7500 nphys, D-7500 Karlsruhe, Germany Univ PJ Safarik, SK-04154 Kosice, Slovakia Univ PJ Safarik Kosice Slovakia SK-04154 arik, SK-04154 Kosice, Slovakia
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 1-2, volume: 467, anno: 1999,
pagine: 156 - 164
SICI:
0370-2693(19991111)467:1-2<156:MOOBPA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONTE-CARLO GENERATOR; PARTON DISTRIBUTIONS; EP COLLISIONS; SCATTERING; ELECTROPRODUCTION; PHOTOPRODUCTION; CALORIMETER; CHAMBER; PHYSICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Adloff, C Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany Berg Univ Gesamthsch Wuppertal Wuppertal Germany tal, Germany
Citazione:
C. Adloff et al., "Measurement of open beauty production at HERA", PHYS LETT B, 467(1-2), 1999, pp. 156-164

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 detected in the range 35 degrees < theta(mu) < 130 degrees and p(perpendicular to)(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 for electroproduction with Q(2) < 1GeV(2) and photoproduction are derived from the data and found to be sigma(ep --> eb (b) over bar X) = 7.1 +/- 0.6(stat. )(-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 reserved.

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Documento generato il 05/04/20 alle ore 09:34:26