b-tagging in DELPHI at LEP

Abreu, P; Adam, W; Adye, T; Adzic, P; Albrecht, T; Alderweireld, T; Alemany Fernandez, R; Allmendinger, T; Allport, P; Almehed, S; Amaldi, U; Amapane, N; Amato, S; Anashkin, E; Andreazza, A; Andringa, S; Anjos, N; Antilogus, P; Apel, W; Arnoud, Y; Ask, S; Asman, B; Augustin, J; Augustinus, A; Baillon, P; Ballestrero, A; Bambade, P; Barbier, R; Bardin, D; Barker, G; Baroncelli, A; Bates, M; Battaglia, M; Baubillier, M; Becks, K; Begalli, M; Behrmann, A; Benekos, N; Benvenuti, A; Berat, C; Berggren, M; Berntzon, L; Bertrand, D; Besancon, M; Besson, N; Bibby, J; Biffi, P; Bloch, D; Blom, M; Bonesini, M; Boonekamp, M; Booth, P; Borisov, G; Botner, O; Bouquet, B; Bowcock, T; Boyko, I; Bracko, M; Branchini, P; Brenner, R; Brodet, E; Bruckman, P; Brunet, J; Bugge, L; Buschmann, P; Caccia, M; CALVI, MARTA; Camporesi, T; Canale, V; Carena, F; Castro, N; Cavallo, F; Chabaud, V; Chapkin, M; Charpentier, P; Checchia, P; Chierici, R; Chliapnikov, P; Chudoba, J; Chung, S; Cieslik, K; Collins, P; Contri, R; Cosme, G; Cossutti, F; Costa, M; Couchot, F; Crawley, B; Crennell, D; Cuevas, J; D'Almagne, B; D'Hondt, J; Dalmau, J; da Silva, T; da Silva, W; della Ricca, G; de Angelis, A; de Boer, W; de Clercq, C; de Lotto, B; De Maria, N; De Min, A; de Paula, L; di Ciaccio, L; Dijkstra, H; di Simone, A; Doroba, K; Drees, J; Dris, M; Eigen, G; Ekelof, T; Ellert, M; Elsing, M; Espirito Santo, M; Fanourakis, G; Fassouliotis, D; Feindt, M; Fernandez, J; Ferrer, A; Ferro, F; Flagmeyer, U; Foeth, H; Fokitis, E; Fulda Quenzer, F; Fuster, J; Gandelman, M; Garcia, C; Gavillet, P; Gazis, E; Geralis, T; Gokieli, R; Golob, B; Gomez Cadenas, J; Gomez Ceballos, G; Goncalves, P; Graziani, E; Grosdidier, G; Grzelak, K; Guy, J; Haag, C; Hallgren, A; Hamacher, K; Hamilton, K; Hansen, J; Haug, S; Hauler, F; Hedberg, V; Hennecke, M; Hernando, J; Herr, H; Heuser, J; Holmgren, S; Holt, P; Houlden, M; Hultqvist, K; Jackson, J; Jalocha, P; Jarlskog, C; Jarlskog, G; Jarry, P; Jeans, D; Johansson, E; Johansson, P; Jonsson, P; Joram, C; Jungermann, L; Kapusta, F; Karlsson, M; Katsanevas, S; Katsoufis, E; Keranen, R; Kernel, G; Kersevan, B; Kiiskinen, A; King, B; Kjaer, N; Kluit, P; Kokkinias, P; Kourkoumelis, C; Kouznetsov, O; Krumstein, Z; Kucharczyk, M; Kucewicz, W; Kurowska, J; Lamsa, J; Leder, G; Ledroit, F; Leinonen, L; Leitner, R; Lemonne, J; Lepeltier, V; Lesiak, T; Liebig, W; Liko, D; Lipniacka, A; Lopes, J; Lopez, J; Loukas, D; Lutz, P; Lyons, L; Macnaughton, J; Malek, A; Maltezos, S; Mandl, F; Marco, J; Marco, R; Marechal, B; Margoni, M; Marin, J; Mariotti, C; Markou, A; Martinez Rivero, C; Martinez Vidal, F; Masik, J; Mastroyiannopoulos, N; Matorras, F; Matteuzzi, C; Mazzucato, F; Mazzucato, M; Mc Nulty, R; Meroni, C; Meyer, W; Migliore, E; Mitaroff, W; Mjoernmark, U; Moa, T; Moch, M; Moenig, K; Monge, R; Montenegro, J; Moraes, D; Moreno, S; Morettini, P; Mueller, U; Muenich, K; Mulders, M; Mundim, L; Murray, W; Muryn, B; Myatt, G; Myklebust, T; Nassiakou, M; Navarria, F; Nawrocki, K; Nicolaidou, R; Niezurawski, P; Nikolenko, M; Nomerotski, A; Norman, A; Nygren, A; Oblakowska Mucha, A; Obraztsov, V; Olshevski, A; Onofre, A; Orava, R; Osterberg, K; Ouraou, A; Oyanguren, A; PAGANONI, MARCO; Paiano, S; Palacios, J; Palka, H; Papadopoulou, T; Pape, L; Parkes, C; Parodi, F; Parzefall, U; Passeri, A; Passon, O; Peralta, L; Perepelitsa, V; Perrotta, A; Petrolini, A; Piedra, J; Pieri, L; Pierre, F; Pimenta, M; Piotto, E; Podobnik, T; Poireau, V; Pol, M; Polok, G; Poropat, P; Pozdniakov, V; Pukhaeva, N; Pullia, A; Rames, J; Ramler, L; Read, A; Rebecchi, P; Rehn, J; Reid, D; Reinhardt, R; Renton, P; Richard, F; Ridky, J; Rivero, M; Rodriguez, D; Romero, A; Ronchese, P; Rosenberg, E; Roudeau, P; Rovelli, T; Ruhlmann Kleider, V; Ryabtchikov, D; Sadovsky, A; Salmi, L; Salt, J; Savoy Navarro, A; Schwickerath, U; Segar, A; Sekulin, R; Siebel, M; Sisakian, A; Smadja, G; Smirnova, O; Sokolov, A; Sopczak, A; Sosnowski, R; Spassov, T; Stanitzki, M; Stavitski, I; Stocchi, A; Strauss, J; Stugu, B; Szczekowski, M; Szeptycka, M; Szumlak, T; TABARELLI DE FATIS, TOMMASO; Taffard, A; Tegenfeldt, F; Timmermans, J; Tinti, N; Tkatchev, L; Tobin, M; Todorovova, S; Tomaradze, A; Tome, B; Tonazzo, A; Tortosa, P; Travnicek, P; Treille, D; Trischuk, W; Tristram, G; Trochimczuk, M; Troncon, C; Turluer, M; Tyapkin, I; Tyapkin, P; Tyndel, M; Tzamarias, S; Uvarov, V; Valenti, G; van Dam, P; van Eldik, J; van Lysebetten, A; van Remortel, N; van Vulpen, I; Vegni, G; Veloso, F; Venus, W; Verbeure, F; Verdier, P; Verzi, V; Vilanova, D; Vitale, L; Vrba, V; Wahlen, H; Washbrook, A; Weilhammer, P; Weiser, C; Wicke, D; Wickens, J; Wilkinson, G; Winter, M; Witek, M; Yushchenko, O; Zalewska, A; Zalewski, P; Zavrtanik, D; Zimin, N; Zintchenko, A; Zupan, M.

doi:10.1140/epjc/s2003-01441-8

The standard method used for tagging b-hadrons in the DELPHI experiment at the CERN LEP Collider is discussed in detail. The main ingredient of b-tagging is the impact parameters of tracks, which relies mostly on the vertex detector. Additional information, such as the mass of particles associated to a secondary vertex, significantly improves the selection efficiency and the background suppression. The paper describes various discriminating variables used for the tagging and the procedure of their combination. In addition, applications of b-tagging to some physics analyses, which depend crucially on the performance and reliability of b-tagging, are described briefly.

Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, T., Alderweireld, T., et al. (2004). b-tagging in DELPHI at LEP. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 32(2), 185-208 [10.1140/epjc/s2003-01441-8].