Heavy flavour production and decay with prompt leptons in the ALEPH detector

Buskulic, D.; Casper, D.; Debonis, I; Décamp, D.; Ghez, Philippe; Goy, C.; Lees, J. P.; Minard, M.-N.; Odier, P.; Pietrzyk, B.; Ariztizabal, F.; Comas, P.; Crespo, J.M.; Efthymiopoulos, I.; Fernández, E.; Fernández-Bosman, M.; Gaitan,; Garrido, Ll.; Martı́nez, M.; Mattison, T. S.; Ortreu, S; Pacheco, A.; Aranda, C. Padilla; Pascual, Á.; Creanza, D.; Depalma, M; Farilla, A.; Iaselli, G.; Mäggi, G.; Marinelli, N.; Natali, S.; Nuzzo, S.; Ranieri, A.; Raso, G.; Romanò, F.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Zito, G.; Chai, Y.; Huang, D.; Huang, X. T.; Lin, J.; Wang, T; Xie, Y.; Xu, D.; Xu, R.; Zhang, J; Zhang, L; Zhao, W.; Bonvicini, G.; Boudreau, J.; Drevermann, H.; Forty, R.; Ganis, G.; Girone, M.; Hagelberg, R.; Harvey, J.; Hilgart, J.; Jacobsen, R.G.; Jost, B.; Knobloch, J.; Lehraus, I.; Maggi, M.; Markou, C.; Mató, P.; Meinhard, H.; Minten, A.; Miquel, R.; Palazzi, P.; Pater,; Perlas, J. A.; Perrodo, P.; Pusztaszeri, J. F.; Ranjard, F.; Rolandi, G.; Rothberg, J.; Ruan, T.; Saich, M.; Schlatter, D.; Schmelling, M.; Sefkow, F.; Tejessy, W.; Tomalin, I. R.; Veenhof, R.; Wachsmuth, H.; Wasserbaech, S.; Wiedenmann, W.; Wildish, T.; Witzeling, W.; Wotschack, J.; Ajaltouni, Z.; Bardadin-Otwinowska, M.; Barrès, A.; Boyer, C.; Falvard, A.; Guicheney, C.; Henrard, P.; Jousset, J.; Michel, B.; Montret, J. C.; Pallin, D.; Perret, P.; Podlyski, F.; Proriol, J.; Saadi, F.; Fearnley, T.; Hansen, J. D.; Hansen, J. R.; Hansen, Richard A.; Hansen, P. H.; Johnson, S. D.; Möllerud, R.; Nilsson, B.S.; Kyriakis, A.; Simopoulou, E.; Siotis, I.; Vayaki, A.; Zachariadou, K.; Badier, J.; Blondel, A.; Bonneaud, G. R.; Brient, J. C.; Bourdon, B.; Fouque, G.; Passalacqua, L.; Rougé, A.; Rumpf, M.; Tanaka, R.; Verderi, M.; Videau, H.; Candlin, D. J.; Parsons, M. I.; Veitch, E.; Focardi, E.; Moneta, L.; Parrini, G.; Corden, M.; Delfino, M.; Georgiopoulos, C.; Jaffe, D. E.; Levinthal, D.; Antonelli, A.; Bencivenni, G.; Bologna, G.; Bossi, F.; Campana, P.; Capon, G.; Cerutti, F.; Chiarella, V.; Felici, G.; Laurelli, P.; Mannocchi, G.; Murtas, F.; Murtas, F.; Pepe-Altarelli, M.; Salomone, S.; Colrain, P.; Tenhave, I; Knowles, I. G.; Lynch, J.G.; Maitland, W.; Morton, W. T.; Raine, C.; Reeves, P.; Scarr, J. M.; Smith, K. M.; Smith, M. G.; Thompson, A. S.; Thorn, S.; Turnbull, R.M.; Becker, U.; Braun, O.; Geweniger, C.; Hanke, P.; Hepp,; Kluge, E. E.; Putzer, A.; Rensch, B.; Schmidt, Michael G.; Stenzel, H.; Tittel, K.; Wunsch, M.; Beuselinck, R.; Binnie, D. M.; Cameron, W.; Cattaneo, M.; Colling, D.; Dornan, P. J.; Hassard, J. F.; Konstantinidis, N.; Moutoussi, A.; Nash, J.; Payne, D. G.; Sanmartin, G; Sedgbeer, J. K.; Wright, A. G.; Girtler, P.; Kühn, D.; Rudolph, G.; Vogl, R.; Bowdery, C. K.; Brodbeck, T. J.; Finch, A. J.; Foster, F.; Hughes, G.; Jackson, D.; Keemer, N. R.; Nuttall, M.; Patel, Apoorva; Sloan, T.; Snow, S. W.; Whelan, E. P.; Galla, A.; Greene, A. M.; Kleinknecht, K.; Raab, J.; Renk, B.; Sander, H. G.; Schmidt, H.; Walther, S. M.; Wanke, R.; Wolf, B.; Bencheikh, A. M.; Benchouk, C.; Bonissent, A.; Calvet, D.; Carr, J.; Coyle, P.; Diaconu, C.; Etienne, F.; Nicod, D.; Payre, P.; Roos, L.; Rousseau, D.; Schwemling, Ph.; Talby, M.; Adlung, S.; Assmann, R.; Bauer, C.; Blum, W.; Brown, D. N.; Cattaneo, P. W.; Dehning, B.; Dietl, H.; Dydak, F.; Frank, M.; Halley, A.W.; Jakobs, K.; Lauber, J.; Lütjens, G.; Lütz, G.; Männer, W.; Moser, H. G.; Richter, R.; Schröder, J.; Schwarz, A. S.; Settles, R.; Seywerd, H.; Stierlin, U.; Stiegler, U.; Stdenis, R; Wolf, G.; Alemany, R.; Boucrot, J.; Callot, O.; Cordier, A.; Davier, M.; Duflot, L.; Grivaz, J.-F.; Heusse, P.; Janot, P.; Dw, Kim; Lediberder, F; Lefrançois, J.; Lutz, A. M.; Musolino, G.; Schune, M. H.; Veillet, J. J.; Videau, I.; Abbaneo, D.; Bagliesi, G.; Batignani, G.; Bottigli, U.; Bozzi, C.; Calderini, G.; Carpinelli, M.; Ciocci, M. A.; Ciulli, V.; Dell’Orso, R.; Ferrante, I.; Fidecaro, F.; Foà, L.; Forti, F.; Giassi, A.; Giorgi, M. A.; Gregorio, A.; Ligabue, F.; Lusiani, A.; Marrocchesi, P. S.; Martin, E. B.; Messineo, A.; Palla, F.; Rizzo, G.; Sanguinetti, G.; Spagnolo, P.; Steinberger, J.; Тенчини, Р.; Tonelli, G.; Triggiani, G.; Valassi, A.; Vannini, C.; Venturi, A.; Verdini, P. G.; Walsh, J.; Betteridge, A. P.; Green, Mg; Johnson, D.; March, P.V.; Medcalf, T.; Mir, L. M.; Quazi, I. S.; Strong, J. A.; Bertin,; Botterill,; Clifft, R. W.; Edgecock, R.; Haywood, S. J.; Edwards, M.; Norton, P. R.; Thompson, J.C.; Bloch-Devaux, B.; Colas, P.; Duarte, H.; Emery, S.; Kozanecki, W.; Lançon, E.; Lemaire, M. C.; Locci, E.; Marx, B.; Pérez, P.; Rander, J.; Renardy, J. F.; Rosowsky, A.; Roussarie, A.; Schuller, J. P.; Schwindling, J.; Mohand, D. Si; Vallage, B.; Johnson, R.P.; Litke, A. M.; Taylor, G. N.; Wear, J.; Babbage, W.; Booth, C. N.; Buttar, C. M.; Cartwright, S. L.; Combley, F.; Dawson, I.; Thompson, L.F.; Böhrer, A.; Brandt, Siegmund; Cowan, G.; Feigl, Eric O.; Grupen, C.; Lutters, G.; Minguet-Rodriguez, J.; Rivera, F.; Saraiva, Pedro; Schäfer, U.; Smolík, L.; Bosisio, L.; Dellamarina, R; Giannini, G.; Gobbo, B.; Pitis, L.; Ragusa, F.; Bellantoni, L.; Chen, W; Conway, J.; Feng, Z.; Ferguson, D.P.S.; Gao, Y. S.; Grahl, J.; Harton, J. L.; Hayes, O.J.; Hu, H.; Nachtman, J. M.; Pan, Y.; Saadi, Y.; Schmitt, M.; Scott, I.; Sharma, Vivek; Turk, J. D.; Walsh, A. M.; Weber, F. V.; Wu, S. L.; Wu, X.; Yamartino, J. M.; Zheng, M.; Zobernig, G.

doi:10.1007/bf01560237

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Selection Of Zz → ℓℓXx Final States1

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Cited by 53 publications

(1 citation statement)

References 25 publications

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“…To remove radiative returns to the Z, the most energetic isolated photon in an event must have an energy less than 0.75 γ peak , where γ peak is the most likely energy of the radiative return photon and is given by γ peak = 0.5 ( √ s − m 2 Z / √ s). Standard lepton cuts are used to identify electrons and muons in the event [15]. Electron energies are corrected for possible bremsstrahlung losses.…”

Section: Selection Of Zz → ℓℓXx Final Statesmentioning

confidence: 99%

Measurement of the e+e−→ZZ production cross section at centre-of-mass energies of 183 and 189 GeV

Barate¹,

Décamp²,

Ghez³

et al. 1999

Physics Letters B

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Section: Selection Of Zz → ℓℓXx Final Statesmentioning

confidence: 99%

Measurement of the e+e−→ZZ production cross section at centre-of-mass energies of 183 and 189 GeV

Barate¹,

Décamp²,

Ghez³

et al. 1999

Physics Letters B

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Measurement of $$\frac{{\Gamma _{b\bar b} }}{{\Gamma _{had} }}$$ using impact parameter measurements and lepton identification

Abreu¹,

Adam²,

Adye³

et al. 1995

Z. Phys. C - Particles and Fields

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The partial decay width of the Z to bb quark pairs has been measured by the DELPHI detector at LEP. b-hadrons, containing b-quarks, were tagged by leptons with high transverse momentum relative to the hadron or by tracks with large impact parameters to the primary vertex. The ratio of the numbers of events with a single such tag to those with two tags was used to estimate the eciency of the method and to reduce the systematic uncertainty. Combining all methods, the value:

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Measurement of the forward-backward asymmetry of charm and bottom quarks at theZ pole usingD *� mesons

Abreu¹,

Adam²,

Agasi³

et al. 1995

Z. Phys. C - Particles and Fields

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The forward-backward asymmetries for the processes e + e ! c c and e + e ! b b at the Z resonance are measured using identied D mesons. Constraining the b asymmetry to the value measured by DELPHI using independent analyses, the charm asymmetry is determined to be: A c;const This result corresponds to an eective electroweak mixing angle measured using charm quark events of: sin 2 lept eff = 0 : 2307 0:0062 (stat) 0:0026 (sys) :

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Heavy flavour production and decay with prompt leptons in the ALEPH detector

Abstract: In 431,000 hadronic Z decays recorded with the Aleph detector at LEP, the yields of electrons and muons in events with one or more prompt leptons have been analysed to give information on the production and decay of heavy quarks.

Cited by 53 publications

References 25 publications

Measurement of the e+e−→ZZ production cross section at centre-of-mass energies of 183 and 189 GeV

Measurement of the e+e−→ZZ production cross section at centre-of-mass energies of 183 and 189 GeV

Measurement of $$\frac{{\Gamma _{b\bar b} }}{{\Gamma _{had} }}$$ using impact parameter measurements and lepton identification

Measurement of the forward-backward asymmetry of charm and bottom quarks at theZ pole usingD *� mesons

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