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Measurement of the Cross Section for open b-Quark Production in Two-Photon Interactions at LEP

S. Schael R. Barate 1 R. Brunelière 1 I. de Bonis 1 D. Decamp 1 C. Goy 1 S. Jézéquel 1 J.P. Lees 1 F. Martin 1 E. Merle 1 M.N. Minard 1 B. Pietrzyk 1 B. Trocmé 1 S. Bravo M.P. Casado M. Chmeissani J.M. Crespo E. Fernandez M. Fernandez-Bosman Ll. Garrido M. Martinez A. Pacheco H. Ruiz A. Colaleo D. Creanza N. de Filippis M. de Palma G. Iaselli G. Maggi M. Maggi S. Nuzzo A. Ranieri G. Raso F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta A. Tricomi G. Zito X. Huang Jiali Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao D. Abbaneo T. Barklow O. Buchmüller M. Cattaneo B. Clerbaux H. Drevermann R.W. Forty M. Frank F. Gianotti J.B. Hansen J. Harvey D.E. Hutchcroft P. Janot B. Jost M. Kado P. Mato A. Moutoussi F. Ranjard L. Rolandi D. Schlatter F. Teubert A. Valassi I. Videau F. Badaud 2 S. Dessagne 2 Alain Falvard 3 D. Fayolle 2 Pascal Gay 2 J. Jousset 2 B. Michel 2 S. Monteil 2 D. Pallin 2 J M. Pascolo 2 Pascal Perret 2 J.D. Hansen J.R. Hansen P.H. Hansen A.C. Kraan B.S. Nilsson A. Kyriakis C. Markou E. Simopoulou A. Vayaki K. Zachariadou A. Blondel 4 J.-C. Brient 4 F. Machefert 4 A. Rougé 4 H. Videau 4 V. Ciulli E. Focardi G. Parrini A. Antonelli M. Antonelli G. Bencivenni F. Bossi G. Capon F. Cerutti V. Chiarella P. Laurelli G. Mannocchi G.P. Murtas L. Passalacqua J. Kennedy J.G. Lynch P. Negus V. O'Shea A.S. Thompson S. Wasserbaech R. Cavanaugh S. Dhamotharan C. Geweniger P. Hanke V. Hepp E.E. Kluge A. Putzer H. Stenzel K. Tittel M. Wunsch R. Beuselinck W. Cameron G. Davies P.J. Dornan M. Girone N. Marinelli J. Nowell S.A. Rutherford J.K. Sedgbeer J.C. Thompson R. White V.M. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph E. Bouhova-Thacker C.K. Bowdery D.P. Clarke G. Ellis A.J. Finch F. Foster G. Hughes R.W.L. Jones M.R. Pearson N.A. Robertson T. Sloan M. Smizanska O. van der Aa C. Delaere G. Leibenguth V. Lemaitre U. Blumenschein F. Hölldorfer K. Jakobs F. Kayser A.-S. Müller B. Renk H.-G. Sander S. Schmeling H. Wachsmuth C. Zeitnitz T. Ziegler A. Bonissent 5 P. Coyle 5 C. Curtil 5 A. Ealet 5 D. Fouchez 5 P. Payre 5 A. Tilquin 5 F. Ragusa A. David H. Dietl G. Ganis K. Hüttmann G. Lütjens W. Männer H.-G. Moser R. Settles M. Villegas G. Wolf J. Boucrot 6 O. Callot 6 M. Davier 6 L. Duflot 6 J.-F. Grivaz 6 Ph. Heusse 6 A. Jacholkowska 3, 6 L. Serin 6 J.-J. Veillet 6 P. Azzurri G. Bagliesi T. Boccali L. Foa A. Giammanco A. Giassi F. Ligabue A. Messineo F. Palla G. Sanguinetti A. Sciaba G. Sguazzoni P. Spagnolo R. Tenchini A. Venturi P.G. Verdini O. Awunor G.A. Blair G. Cowan A. Garcia-Bellido M.G. Green T. Medcalf A. Misiejuk J.A. Strong P. Teixeira-Dias R.W. Clit T.R. Edgecock P.R. Norton I.R. Tomalin J.J. Ward B. Bloch-Devaux 7 D. Boumediene 7 P. Colas 7 B. Fabbro 7 E. Lançon 7 M.-C. Lemaire 7 E. Locci 7 P. Perez 7 J. Rander 7 B. Tuchming 7 B. Vallage 7 A.M. Litke G. Taylor C.N. Booth S. Cartwright F. Combley P.N. Hodgson M. Lehto L.F. Thompson A. Böhrer S. Brandt C. Grupen J. Hess A. Ngac G. Prange C. Borean G. Giannini H. He J. Putz J. Rothberg S.R. Armstrong K. Berkelman K. Cranmer D.P.S. Ferguson Y. Gao S. Gonzalez O.J. Hayes H. Hu S. Jin J. Kile P.A. Mcnamara J. Nielsen Y.B. Pan J.H. von Wimmersperg-Toeller W. Wiedenmann J. Wu Sau Lan Wu X. Wu G. Zobernig G. Dissertori
Abstract : Inclusive beauty-quark production in two-photon collisions has been measured at LEP using an integrated luminosity of 698 pb-1 collected by the ALEPH detector with sqrt(s) between 130 and 209 GeV. The b quarks were identified using lifetime information. The cross section is found to be sigma(e+ e- --> e+ e- b \bar{b} X) = (5.4 +/- 0.8 (stat) +/- 0.8 (syst)) pb which is consistent with Next-to-Leading Order QCD.
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Submitted on : Tuesday, September 4, 2007 - 10:46:24 AM
Last modification on : Thursday, March 5, 2020 - 6:25:36 PM

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S. Schael, R. Barate, R. Brunelière, I. de Bonis, D. Decamp, et al.. Measurement of the Cross Section for open b-Quark Production in Two-Photon Interactions at LEP. Journal of High Energy Physics, Springer, 2007, 09, pp.102. ⟨10.1088/1126-6708/2007/09/102⟩. ⟨in2p3-00169489⟩

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