Measurement of open beauty production at HERA

Adloff, C.; Andreev, V.; Andrieu, Bernard; Arkadov, V.; Astvatsatourov, A.; Ayyaz, I.; Babaev, A.; Bähr, J.; Baranov, P.; Barrelet, E.; Bartel, W.; Bassler, U.; Bate, Pete S.; Beglarian, A.; Behnke, O.; Beier, C.; Belousov, A.; Benisch, T.; Berger, Ch.; Bernardi, G.; Berndt, T.; Bertrand-Coremans, G.; Biddulph, P.; Bizot, J.C.; Boudry, V.; Braunschweig, W.; Brisson, V.; Bröker, H.-B.; Brown, D.; Brückner, W.; Bruel, P.; Bruncko, D.; Bürger, J.; Büsser, F.W.; Bunyatian, A.; Bürke, S.; Burrage, A.; Buschhorn, G.; Calvet, D.; Campbell, A.; Cao, Junpeng; Carli, T.; Chabert, E. C.; Charlet, M.; Clarke, D.; Clerbaux, B.; Collard, C.; Contreras, J. G.; Coughlan, J. A.; Cousinou, M. C.; Cox, B.; Cozzika, G.; Cvach, J.; Dainton, J. B.; Dau, W.D.; Daum, K.; David, M.; Davidsson, Marcus; Delcourt, B.; Demirchyan, R.; Roeck, A. De; Wolf, E. A. De; Diaconu, C.; Dixon, P.; Dodonov, V.; Donovan, K.T.; Dowell, J. D.; 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, A.B.; Faulkner, Peter; Favart, L.; Fedotov, A.; Felst, R.; Feltesse, J.; Ferencei, J.; Ferrarotto, F.; Ferron, S.; Fleischer, M.; Flügge, G.; Fomenko, A.; Foresti, I.; Formánek, J.; Foster, J. M.; 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.; Grässler, H.; Greenshaw, T.; Griffiths, R.K.; Grindhammer, G.; Hadig, T.; Haidt, D.; Hajduk, L.; Haustein, V.; Haynes, W.J.; Heinemann, B.; Heinzelmann, G.; Henderson, R. C. W.; Hengstmann, S.; Henschel, H.; Heremans, R.; Herrera, G.; Herynek, I.; Hilgers, M.; Hiller, K. H.; Hilton, C.D.; Hladký, J.; Höting, P.; Hoffmann, D.; Horisberger, R.; Hurling, S.; Ibbotson, M.; İşsever, Ç.; Jacquet, M.; Jaffré, M.; Janauschek, L.; Jansen, D. M.; Janssen, X.; Jönsson, L.; Johnson, D.P.; Zhokin, A.; Jones, M.; Jung, H.; Kästli, H.K.; Kant, D.; Kapichine, M.; Karlsson, Martin; Karschnick, O.; Kaufmann, O.; Kausch, M.; Keil, Frerich J.; Keller, N.; Kenyon, I. R.; Kermiche, S.; Kiesling, C.; Klein, M.; Kleinwort, C.; Knies, G.; Kolanoski, H.; Kolya, S. D.; Korbel, V.; Kostka, P.; Kotelnikov, S.K.; Krasny, M. W.; Krehbiel, H.; Kroseberg, J.; Krücker, D.; Krüger, K.; Küpper, A.; Kuhr, T.; Kurča, T.; Lachnit, W.; Lahmann, R.; Lamb, David C.; Landon, M. P. J.; Lange, W.; Langenegger, U.; Lebedev, A.; Lehner, F.; Lemaı̂tre, V.; Lemrani, R.; Lendermann, V.; Levonian, S.; Lindstroem, M.; Lubimov, V.; Lobo, G.; Lobodzinska, E.; Lüders, S.; Lüke, D.; Lytkin, L.; Magnussen, N.; Mahlke-Krüger, H.; Malden, N.; Malinovsky, E. I.; Malinovski, I.; Maraček, R.; Marage, P.; Marks, J.; Marshall, R.; Martyn, H. U.; Martyniak, J.; Maxfield, S. J.; McMahon, T. R.; Mehta, A.; Meier, K.; Merkel, P.; Metlica, F.; Meyer, Andreas Bernhard; Meyer, H.; Meyer, J.; Meyer, P.-O.; Mikocki, S.; Milstead, D.; Mohr, R. Casanova; Mohrdieck, S.; Mondragón, M. N.; Moreau, F.; Morozov, A.; Morris, J. V.; Müller, D.; Müller, K.; Мурін, П.; Nagovizin, V.; Naroska, B.; Naumann, J.; Naumann, T.; Négri, I.; Newman, P. R.; Nguyen, H. K.; Nicholls, T. C.; Niebergall, F.; Niebuhr, C.; Nix, O.; Nowak, G.; Nunnemann, T.; Olsson, J. E.; Usik, A.; Ozerov, D.; Palmen, P.; Panassik, V.; Pascaud, C.; Passaggio, S.; Patel, G. D.; Pawletta, H.; Pérez, E.; Phillips, J. P.; Pitzl, D.; Pöschl, R.; Potashnikova, I. K.; Povh, Bogdan; Rabbertz, K.; Rädel, G.; Rauschenberger, J.; Reimer, P.; Reisert, B.; Reyna, D.; Rieß, S.; Rizvi, E.; Robmann, P.; Roosen, R.; Rostovtsev, A.; Royon, C.; Rusakov, S. V.; Rybicki, K.; Sankey, D. P. C.; Scheins, J.; Schilling, F. P.; Schleif, S.; Schleper, P.; Schmidt, D.; Schoeffel, L.; Schörner, T.; Schröder, V.; Schultz‐Coulon, H.‐C.; Sefkow, F.; Shekelian, V.; Shevyakov, I.; Shtarkov, L. N.; Siegmon, G.; Sirois, Y.; Sloan, T.; Smirnov, P.; Smith, M. N. K.; Solochenko, V.; Solov’ev, Yu. V.; Spaskov, V.; Specka, A.; Spitzer, H.; Stamen, R.; Steinhart, J.; Stella, B.; Stellberger, A.; Stiewe, J.; Straumann, U.; Struczinski, W.; Sutton, J. P.; Swart, M.; Taševský, M.; Chernyshov, V. N.; Chechelnitsky, S.; Thompson, G.; Thompson, Peter; Tobien, N.; Todenhagen, R.; Traynor, D.; Truöl, P.; Tsipolitis, G.; Turnau, J.; Turney, J.E.; Tzamariudaki, E.; Udluft, Steffen; Valkár, Š.; Valkárová, A.; Vallée, C.; Haecke, A. Van; Mechelen, P. Van; Vazdik, Y.; Villet, G.; Dombrowski, S. von; Wacker, K.; Wallny, R.; Walter, T.; Waugh, Benedict Martin; Weber, G.; Weber, M.; Wegener, D.; Wegner, A.; Wengler, T.; Werner, M.; West, L.R.; White, G.; Wiesand, S.; Wilksen, T.; Winde, M.; Winter, G. G.; Wissing, C.; Wobisch, M.; Wollatz, H.; Wünsch, E.; Žáček, J.; Zálešâk, J.; Zhang, Zhen; Zini, P.; Zomer, F.; Zsembery, J.; Nedden, M. zur

doi:10.1016/s0370-2693(99)01099-0

Cited by 94 publications

(59 citation statements)

References 35 publications

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“…First measurements [1] of the b-quark cross sections at HERA were significantly higher than the QCD predictions calculated at nextto-leading order (NLO) approximation. Similar observations were made in hadron-hadron collisions at Tevatron [2] and also in photon-photon interactions at LEP2 [3].…”

Section: Introductionmentioning

confidence: 87%

“…At HERA, the inclusive beauty photoproduction has been investigated [16,17,19,21,25]. In [17,19,25] comparisons with the first H1 measurements [1] have been done. In [17,25] the Monte-Carlo generator Cascade [36] has been used to predict the cross section of the b-quark and dijet associated photoproduction.…”

Section: Jhep08(2006)043mentioning

confidence: 99%

“…However, calculations [17,19,25] deal with the total cross sections only. In our previous paper [21] the total and differential cross sections of beauty photoproduction (both inclusive and associated with hadronic jets) have been considered and comparisons with the recent H1 and ZEUS measurements [1,4,5,9] have been made. It was demonstrated [21] that the k T -factorization approach supplemented with the CCFM or BFKL-DGLAP evolved unintegrated gluon distributions [28,37] reproduces well the numerous HERA data [1,4,5,9].…”

Section: Jhep08(2006)043mentioning

confidence: 99%

“…The beauty production at high energies is a subject of intensive study from both theoretical and experimental points of view [1][2][3][4][5][6][7][8][9]. First measurements [1] of the b-quark cross sections at HERA were significantly higher than the QCD predictions calculated at nextto-leading order (NLO) approximation.…”

Section: Introductionmentioning

confidence: 99%

“…Some disagreement is observed mainly at small decay muon and/or associated jet transverse momenta [4,5,9]. But the large excess of the first measurements over NLO QCD, reported by the H1 collaboration [1], is not confirmed.…”

Section: Introductionmentioning

confidence: 99%

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Deep inelastic beauty production at HERA in thek_T-factorization approach

Lipatov

Zotov

2006

J. High Energy Phys.

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We calculate the cross section of beauty production in ep deep inelastic scattering at HERA collider in the framework of the k T -factorization approach. The unintegrated gluon distributions in a proton are obtained from the full CCFM, from unified BFKL-DGLAP evolution equations as well as from the Kimber-Martin-Ryskin prescription. We investigate different production rates and study the b-quark contribution to the inclusive proton structure function F 2 (x, Q 2 ) at small x and at moderate and high values of Q 2 . Our theoretical results are compared with the recent experimental data taken by the H1 and ZEUS collaborations. We demonstrate the importance of leading ln 1/x contributions in description of the HERA data.

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Section: Introductionmentioning

confidence: 87%