Performance of the DELPHI detector

Abreu, P.; Adam, W.; Adye, T.; Agasi, E.; Ajinenko, I.; Aleksan, R.; Alekseev, G. D.; Alemany, R.; Allport, P. P.; Almehed, S.; Alvsvaag, S. J.; Amaldi, U.; Amato, S.; Andreazza, A.; Andrieux, M. L.; Antilogus, P.; Apel, W. D.; Arnoud, Y.; Åsman, B.; Augustin, J. E.; Augustinus, A.; Baillon, P.; Bambade, P.; Barão, F.; Barate, R.; Bardin, D. Y.; Baroncelli, A.; Bärring, O.; Barrio, J. A.; Bartl, W.; Bates, M. J.; Battaglia, M.; Baubillier, M.; Baudot, J.; Becks, K. H.; Begalli, M.; Beillière, P.; Belokopytov, Yu.; Benvenuti, A. C.; Berggren, M.; Bertrand, Daniel; Bianchi, F.; Bigi, M.; Bilenky, M. S.; Billoir, P.; Blöch, D.; Blume, M.; Blyth, S.; Bolognese, T.; Bonesini, M.; Bonivento, W.; Booth, P.S.L.; Bosio, C.; Bosworth, S.; Botner, O.; Bouquet, B.; Bourdarios, C.; Bowcock, T. J. V.; Bozzo, M.; Branchini, P.; Brand, K. D.; Brenke, T.; Brenner, R.; Bricman, C.; Brillault, L.; Brown, R.C.A.; Brückman, P.; Brunet, J. M.; Bugge, L.; Buran, T.; Burgsmuller, T.; Buschmann, P.; Buys, A.; Cabrera, S.; Calvi, M.; Rozas, Aurelio Juste; Camporesi, T.; Canale, V.; Canepa, M.; Cankoçak, K.; Cao, F.; Carena, F.; Carrilho, P.; Carroll, L.; Caso, C.; Castillo-Gimenez, M V.; Cattai, A.; Cavallo, F. R.; Cerrito, L.; Chabaud, V.; Charpentier, Ph.; Chaussard, L.; Chauveau, J.; Checchia, P.; Chelkov, G. A.; Chen, M.; Chierici, R.; Chliapnikovp, V.; Chochula, P.; Chorowicz, V.; Chudoba, J.; Cindro, V.; Collins, P.; Contreras, J. L.; Contri, R.; Cortina, E.; Cossutti, F.; Crawley, H. B.; Crennell, D.; Crosetti, G.; Cuevas, J.; Czellár, S.; Dahl‐Jensen, E.; Dahm, J.; Dalmagne, B.; Dam, M.; Damgaard, G.; Dauncey, P.; Davenport, M.; Silva, W. da; Defoix, C.; Deghorain, A.; Ricca, G. Della; Delpierre, P.; Demaria, N.; Angelis, A. De; Boer, W. De; Brabandere, S. De; Clercq, C. De; Vaissière, Ch De La; Lotto, B. De; Min, A. De; Paula, L. De; Jean, C. De Saint; Dijkstra, H.; Di, Ciacciol.; Djama, F.; Dolbeau, J.; Dönszelmann, M.; Doroba, K.; Dracos, M.; Drees, J.; Drees, K. A.; Dris, M.; Dufour, Y.; Dupont, Florent; Edsall, D.; Ehret, R.; Eigen, G.; Ekelöf, T.; Ekspong, G.; Elsing, M.; Engel, J. P.; Ershaidat, N.; Erzen, B.; Espirito-Santo, M.C.; Falaleev, V.; Falk, E.; Fassouliotis, D.; Feindt, M.; Fenyuk, A. B.; Ferrer, A.; Filippas, T. A.; Firestone, A.; Fischer, P.; Foeth, H.; Fokitis, E.; Fontanelli, F.; Formenti, F.; Franek, B.; Frenkiel, P.; Fries, D. C.; Frodesen, A. G.; Frühwirth, R.; Fulda-Quenzer, F.; Fuster, J.; Galloni, A.; Gamba, D.; Gandelman, M.; Garćıa, C.; Garcia, J. M. Vizan; Gaspar, C.; Gasparini, U.; Gavillet, Ph.; Gazis, E. N.; Gelé, D.; Gerber, J.; Gerdyukov, L.; Gibbs, M.; Gokieli, R.; Golob, B.; Gopal, G. P.; Gorn, L.; Górski, M.; Gouz, Yu.; Gracco, V.; Graziani, E.; Grosdidier, G.; Grzelak, K.; Gumenyuk, S.; Gunnarsson, P.; Günther, M.; Guy, J.; Hahn, F.; Hahn, S. R.; Hajduk, Z.; Hallgren, A.; Hamacher, K.; Hao, W.; Harris, F. J.; Hedberg, V.; Henriques, Rui; Hernández, J. J.; Herquet, P.; Herr, H.; Hessingt, L.; Higón, E.; Hilke, H. J.; Hill, T. S.; Holmgren, S. O.; Holt, P. J.; Holthuizen, D.; Hoorelbeke, S.; Houlden, M.; Huet, Kathy; Hultqvist, K.; Jackson, J. N.; Jacobsson, R.; Jałocha, P.; Janik, R.; Jarlskog, C.; Jarlskog, G.; Jarry, P.; Jean‐Marie, B.; Johansson, Erik; Jönsson, L.; Jönsson, P.; Joram, C.; Juillot, P.; Kaiser, M.; Kapusta, F.; Karafasoulis, K.; Karlsson, M.; Karvelas, E.; Karyukhin, A. N.; Katsanevas, S.; Katsoufis, E.; Keränen, R.; Khomenko, B. A.; Khovanski, N. N.; King, B. T.; Kjaer, N. J.; Klein, H.; Klovning, A.; Kluit, P.; Koene, B.; Kokkinias, P.; Koratzinos, M.; Kourkoumelis, C.; Kouznetsov, O.; Kramer, P.; Krammer, M.; Kreuter, C.; Kronkvist, I.; Krumstein, Z.; Krupinski, W.; Kubinec, P.; Kucewicz, W.; Kurvinen, K.; Lacasta, C.; Laktineh, I. B.; Lamblot, S.; Lämsä, J.; Lanceri, L.; Lane, D. W.; Langefeld, P.; Lapin, V.; Laugier, J. P.; Lauhakangas, R.; Leder, G.; Ledroit, F.; Lefébure, V.; Legan, C. K.; Leitner, R.; Lemoigne, Y.; Lemonne, J.; Lenzen, G.; Lepeltier, V.; Lesiak, T.; Liko, D.; Lindner, R.; Lipniacka, A.; Lippi, I.; Lörstad, B.; Loken, J.; Lopez, J. M.; Lopez-Aguera, M A.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Mæhlum, G.; Maio, A.; Malychev, V.; Mandl, F.; Marco, J.; Maréchal, B.; Margoni, M.; Marin, J. C.; Mariotti, C.; Μάρκου, Α.; Maron, T.; Martínez-Rivero, C.; Martínez-Vidal, F.; Martí, Ignacio; Mašík, J.; Matorras, F.; Matteuzzi, C.; Matthiae, G.; Mazzucato, M.; McCubbin, M.; McKay, R.; McNulty, R.; Medbo, J.; Meroni, C.; Meyer, S.; Meyer, W. T.; Michelotto, M.; Mirabito, L.; Mitaroff, W.; Mjörnmark, U.; Moa, T.; Möller, R.; Mönig, K.; Monge, M. R.; Morettini, P.; Müller, H.; Mundim, L.; Murray, Joelle; Muryn, B.; Myatt, G.; Naraghi, F.; Navarria, F. 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I.; Rosso, E.; Roudeau, P.; Rovelli, T.; Ruckstuhl, W.; Ruhlmann-Kleider, V.; Ruiz, A.; Rybicki, K.; Saarikko, H.; Sacquin, Y.; Sadovsky, A.; Sajot, G.; Salt, J.; Sánchez, J.; Sannino, M.; Schimmelpfennig, M.; Schneider, H.; Schwickerath, U.; Schyns, M. A E; Scuri, F.; Seager, P.; Sedykh, Y.; Segar, A. M.; Seitz, A.; Sekulin, R.; Shellard, R. C.; Siccama, I.; Siegrist, P.; Simonetti, S.; Simonetto, F.; Sissakian, A.; Sitár, B.; Skaali, T. B.; Smadja, G.; Smirnov, N.; Smirnova, O.; Smith, G. R.; Solovianov, O.; Sosnowski, R.; Souza-Santos, D.; Spiriti, E.; Sponholz, P.; Squarcia, S.; Stănescu, C.; Stapnes, S.; Stavitski, I.; Stichelbaut, F.; Stocchi, A.; Strauss, J.; Strub, R.; Stugu, B.; Szczekowski, M.; Tabarelli, T.; Tavernet, J. P.; Tchikilev, O.; Tilquin, A.; Timmermans, J.; Tkatchev, L. G.; Todorov, T.; Toet, D. Z.; Tomaradze, A.; Tomé, B.; Tonazzo, A.; Tortora, L.; Tranströmer, G.; Treille, D.; Trischuk, W.; Tristram, G.; Trombini, A.; Troncon, C.; Tsirou, A.; Turluer, M. L.; Tyapkin, I. A.; Tyndel, M.; Tzamarias, S.; Uberschar, B.; Ullaland, O.; Valenti, G.; Vallazza, E.; Velde, C. Vander; Apeldoorn, G. W. van; Dam, P. Van; Doninck, W. K. Van; Eldik, J. Van; Vassilopoulos, N.; Vegni, G.; Ventura, L.; Vénus, W.; Verbeure, F.; Verlato, M.; Vertogradov, L. S.; Vilanova, D.; Vincent, P.; Vitale, L.; Vlasov, E.; Vodopyanov, A.; Vrba, V.; Wahlen, H.; Walck, C.; Weierstall, M.; Weilhammer, P.; Weiser, C.; Wetherell, A. M.; Wicke, D.; Wickens, J.; Wielers, M.; Wilkinson, G.; Ws, C. Williams; Winter, M.; Witek, M.; Woschnagg, K.; Yip, K.; Zach, F.; Zaitsev, A.; Zalewska, A.; Zalewski, P.; Zevgolatakos, E.; Zimin, N. I.; Zito, M.; Žontar, D.; Zuberi, R.; Zucchelli, G. C.; Zumerle, G.

doi:10.1016/0168-9002(96)00463-9

Cited by 300 publications

(68 citation statements)

References 38 publications

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“…The electron identification algorithm is described in ref. [13]. Within the HPC acceptance, electrons of momentum above 3 GeV/c are identified with an efficiency of ∼ 77%.…”

Section: The Delphi Detectormentioning

confidence: 99%

“…The DELPHI detector has been described in detail elsewhere [12,13]; only the detectors relevant to the present analysis are briefly described in the following. The tracking of charged particles is accomplished in the barrel region with a set of cylindrical tracking detectors whose axis is oriented along the 1.23 T magnetic field and the direction of the beam.…”

Section: The Delphi Detectormentioning

confidence: 99%

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Determination of $\mathrm{|V_{cb}|}$ from the semileptonic decay B $^0 \rightarrow$ D $^{*-} \ell^+ \nu$

Abreu

Gil²

1996

Zeitschrift f�r Physik C Particles and Fields

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Link to publication Citation for published version (APA):Abreu, P., Agasi, E. E., Boudinov, E., Hao, W., Holthuizen, D. J., Kluit, P. M., ... van Eldik, J. E. (1996). Determination of |V_{cb}| from the semileptonic decay $B^0 \rightarrow D^{*-}l^+ \nu. Zeitschrift für Physik. C, Particles and Fields, 71, 539. DOI: 10.1007/s002880050202 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.Download date: 12 May 2018 Z. Phys. C 71, 539-553 (1996) ZEITSCHRIFT FÜR PHYSIK C Abstract. Semileptonic decays B→ D * − + νX were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant and non-resonant D * − π + states was performed and the ratio of the branching fractions:Br ( The value of |V cb | was computed using theoretical calculations of F (q 2 max ), giving:|V cb | = (38.9 ± 2.0(stat) ± 2.6(syst) ± 1.7(theory)) · 10 −3 .The total branching fraction Br(B 0 → D * − + ν) was determined to be:Br(B 0 → D * − + ν) = (5.52 ± 0.17(stat) ± 0.68(syst))%.

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“…The electron identification algorithm is described in ref. [13]. Within the HPC acceptance, electrons of momentum above 3 GeV/c are identified with an efficiency of ∼ 77%.…”

Section: The Delphi Detectormentioning

confidence: 99%

Section: The Delphi Detectormentioning

confidence: 99%

Determination of $\mathrm{|V_{cb}|}$ from the semileptonic decay B $^0 \rightarrow$ D $^{*-} \ell^+ \nu$

Abreu

Gil²

1996

Zeitschrift f�r Physik C Particles and Fields

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“…A description of the DELPHI tracking detectors may be found in [3]. In the forward the TPC measures only short track elements of particles leaving through its endcap, and there are fewer R points provided by the jet chamber of the Inner Detector.…”

Section: Improvement Of Tracking In the Vft Regionmentioning

confidence: 99%

“…The detector must improve the overall hermeticity of DELPHI and provide a better extrapolation of tracks towards the forward RICH [3] detectors, leading to a better particle identi cation in this region. The momentum measurement is limited by Coulomb scattering and a resolution of about 100 m is su cient.…”

Section: Design Considerationsmentioning

confidence: 99%

“…The Inner layer is built up of both double and single-sided detectors, allowing the re-use of double-sided detectors from the previous vertex detector. 2 Hamamatsu Photonics K.K., Hamamatsu City, Japan 3 The pixel plaquettes are divided into ten regions of 24 24 pixels at large radius and six regions of 24 16 pixels at smaller radius. Each region is read out by an SP8 [10] chip bump-bonded to the detector (see section 4).…”

Section: Silicon Componentsmentioning

confidence: 99%

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The DELPHI Silicon Tracker at LEP2

Chochula

Rosinský

Andreazza

et al. 1998

Nuclear Instruments and Methods in Physics Research Section A:

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Yves was one of the driving forces during the design and construction of the Silicon Tracker. He was killed in an avalanche on the Pointe Percee in January 1996, a victim of his passion for the high mountains. We would like to dedicate this paper to his memory. AbstractThe DELPHI Silicon Tracker, an ensemble of microstrips, ministrips and pixels, was completed in 1997 and has accumulated over 70 pb 1 of high energy data. The Tracker is optimised for the LEP2 physics programme. It consists of a silicon microstrip barrel and endcaps with layers of silicon pixel and ministrip detectors. In the barrel part, three dimensional b tagging information is available down to a polar angle of 25 . Impact parameter resolutions have been measured of 28 m 71= (p sin 3 2 ) m i n R and 34 m 69=p m i n Rz, where p is the track momentum in GeV=c. The amount of material has been kept low with the use of double-sided detectors, double-metal readout, and light mechanics. The pixels have dimensions of 330 330 m 2 and the ministrips have a readout pitch of 200 m. The forward part of the detector shows average e ciencies of more than 96%, has signal-to-noise ratios of up to 40 in the ministrips, and noise levels at the level of less than one part per million in the pixels. Measurements of space points with low backgrounds are provided, leading to a vastly improved tracking e ciency for the region with polar angle less than 25 .3

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