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151. On-Chip Fast Data Sparsification for a Monolithic 4096-Pixel Device

Author: Lucio Pancheri, Gianluca Traversi, Sara Valentinetti, V. Speziali, Carla Sbarra, L. Vitale, Marco Bomben, F. Forti, Mauro Dell'Orso, Massimo Manghisoni, R. Di Sipio, Mauro Villa, Paola Giannetti, C. Andreoli, R. Spighi, G. Batignani, Valerio Re, D. Gamba, Giovanni Soncini, I. Rachevskaia, G. Fontana, Marco Bruschi, L. Bosisio, S. Bettarini, L. Lanceri, Fabio Morsani, G. Rizzo, E. Paoloni, Alessandro Gabrielli, J. J. Walsh, N. Semprini, Giuseppe Giraudo, G. Marchiori, Filippo Bosi, Mario Giorgi, B. Giacobbe, F. Giorgi, A. Lusiani, R. Cenci, Lodovico Ratti, Gabriele Giacomini, P. Mereu, G. Calderini, Antonio Zoccoli, Giovanni Verzellesi, Nicola Neri, Luigi Gaioni, E. Pozzati, G.-F. Dalla Betta, Bomben, Marco, Bosisio, Luciano, Giacomini, Gabriele, Lanceri, Livio, I., Rachevskaia, Vitale, Lorenzo, SLIM5 Collaboration, et a. l., A. Gabrielli, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell'Orso, F. Forti, P. Giannetti, M.A. Giorgi, A.Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, L. Gaioni, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, M. Bomben, L. Bosisio, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vital, G.F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, R. Di Sipio, M. Bruschi, B. Giacobbe, F. Giorgi, N. Semprini, C. Sbarra, R. Spighi, S. Valentinetti, M. Villa, A. Zoccoli, Gabrielli, A, Batignani, G, Bettarini, S, Bosi, F, Calderini, G, Cenci, R, Dell'Orso, M, Forti, F, Giannetti, P, Giorgi, Ma, Lusiani, Alberto, Marchiori, G, Morsani, F, Neri, N, Paoloni, E, Rizzo, G, Walsh, J, Andreoli, C, Gaioni, L, Pozzati, E, Ratti, L, Speziali, V, Manghisoni, M, Re, V, Traversi, G, Bomben, M, Bosisio, L, Giacomini, G, Lanceri, L, Rachevskaia, I, Vitale, L, Betta, Gfd, Soncini, G, Fontana, G, Pancheri, L, Verzellesi, G, Gamba, D, Giraudo, G, Mereu, P, Di Sipio, R, Bruschi, M, Giacobbe, B, Giorgi, F, Semprini, N, Sbarra, C, Spighi, R, Valentinetti, S, Villa, M, and Zoccoli, A.
Subjects: Nuclear and High Energy Physics, EFFICIENCY, sparsification, Physics::Instrumentation and Detectors, Digital readout, PIXEL, Active pixel detectors, Settore ING-INF/01 - Elettronica, Computer Science::Hardware Architecture, Application-specific integrated circuit, MAPS, pixel detector, Nuclear electronics, Electronic engineering, System on a chip, Electrical and Electronic Engineering, Physics, sparsiﬁcation, Pixel, Detector, Chip, READOUT, Nuclear Energy and Engineering, CMOS, Sparsification, Master clock
Abstract: The paper describes a mixed-mode ASIC composed of a fast readout architecture that interfaces with a matrix of 4096 Monolithic Active Pixel Sensors (MAPS). The matrix has 128 columns and 32 rows of pixels and is divided into 256 regions of 4 x 4 pixels, named macro-pixels (MPs). The chip is an upgrade of a smaller version having 256 pixels that was designed and tested. The two chips were designed via STM 130 nm CMOS technology. The pixel dimension is 50 by 50 mu m(2). The work is aimed at improving the design of MAPS detectors with an on-chip fast sparsification system, for particle tracking, to match the requirements of future high-energy physics experiments. The readout architecture implemented is data driven to extend the flexibility of the system, to be also used in first level triggers on tracks in vertex detectors. Simulations indicate that the readout system can cope with an average hit rate up to 100 MHz/cm(2) if a master clock of 80 MHz is used, while maintaining an overall efficiency over 99%. RI Gabrielli, Alessandro/H-4931-2012; Villa, Mauro/C-9883-2009; Dalla Betta, Gian-Franco/I-1783-2012; Forti, Francesco/H-3035-2011; Ratti, Lodovico/I-8836-2012; Giorgi, Filippo Maria/I-7602-2012
Published: 2009

152. A 4096-pixel MAPS device with on-chip data sparsification

Author: R. Spighi, Giovanni Verzellesi, Marco Bruschi, L. Lanceri, R. Cenci, G. Giraudo, Nicola Neri, E. Paoloni, G. Batignani, Filippo Bosi, G.-F. Dalla Betta, F. Forti, Valerio Re, Carla Sbarra, Giovanni Soncini, I. Rachevskaia, Luigi Gaioni, Paola Giannetti, Massimo Manghisoni, Federico M. Giorgi, Gianluca Traversi, Sara Valentinetti, D. Gamba, G. Marchiori, Mario Giorgi, N. Semprini, B. Giacobbe, V. Speziali, G. Giacomini, Lucio Pancheri, Mauro Villa, G. Rizzo, Alberto Lusiani, M. Bomben, L. Vitale, E. Pozzati, Mauro Dell'Orso, Fabio Morsani, Alessandro Gabrielli, R. Di Sipio, C. Andreoli, G. Calderini, G. Fontana, L. Bosisio, Lodovico Ratti, P. Mereu, J. J. Walsh, S. Bettarini, Antonio Zoccoli, A. Gabrielli, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell’Orso, F. Forti, P. Giannetti, M.A. Giorgi, A. Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, L. Gaioni, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, M. Bomben, L. Bosisio, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vitale, G.F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, R. Di Sipio, M. Bruschi, B. Giacobbe, F. Giorgi, C. Sbarra, N. Semprini, R. Spighi, S. Valentinetti, M. Villa, A. Zoccoli, Bomben, Marco, Bosisio, Luciano, Giacomini, Gabriele, Lanceri, Livio, I., Rachevskaia, Vitale, Lorenzo, SLIM5 Collaboration, et a. l., Gabrielli, A, Batignani, G, Bettarini, S, Bosi, F, Calderini, G, Cenci, R, Dell'Orso, M, Forti, F, Giannetti, P, Giorgi, Ma, Lusiani, Alberto, Marchiori, G, Morsan, F, Neri, N, Paoloni, E, Rizzo, G, Walsh, J, Andreoli, C, Gaioni, L, Pozzati, E, Ratti, L, Speziali, V, Manghisoni, M, Re, V, Traversi, G, Bomben, M, Bosisio, L, Giacomini, G, Lanceri, L, Rachevskaia, I, Vitale, L, Dalla Betta, Gf, Soncini, G, Fontana, G, Pancheri, L, Verzellesi, G, Gamba, D, Giraudo, G, Mereu, P, Di Sipio, R, Bruschi, M, Giacobbe, B, Giorgi, F, Sbarra, C, Semprini, N, Spighi, R, Valentinetti, S, Villa, M, and Zoccoli, A.
Subjects: Physics, Nuclear and High Energy Physics, CMOS sensor, Pixel, Physics::Instrumentation and Detectors, business.industry, Sparsification, Detector, HEPE, Chip, Settore ING-INF/01 - Elettronica, Matrix (mathematics), CMOS, Application-specific integrated circuit, MAPS, Master clock, business, Instrumentation, Computer hardware
Abstract: A prototype of a mixed-mode ASIC composed of a fast readout architecture that interfaces with a matrix of 4096 Monolithic Active Pixel Sensor (MAPS) was fabricated via STM 130 nm CMOS technology. Groups of 4 x 4 pixels form a macro-pixel (MP). The readout architecture is parallel and could overcome the readout speed limit of big matrices. As the output port can only accept one-hit information at a time, an internal queuing system has been provided to face high hit-rate conditions. The ASIC can work in two different manners as it can be connected to an actual full-custom matrix of MAPS or to a digital matrix emulator composed of standard cells, for testing facilities. For both operating modes a slow-control phase is required to load the chip configuration. Previous versions of similar ASICs were designed and tested. The work is aimed at improving the design of MAPS detectors with an on-chip fast sparsification system, for particle tracking, to match the requirements of future high-energy physics experiments. The readout architecture implemented is data driven extending the flexibility of the system to be also used in first level triggers on tracks in vertex detectors. Preliminary simulations and tests indicate that the readout system can cope with an average hit-rate up to 100 MHz/cm(2) if a master clock of 80 MHz is used, while maintaining an overall efficiency over 99%. (c) 2009 Elsevier B.V. All rights reserved.
Published: 2009

153. Search for a Dark Photon ine+e−Collisions atBaBar

Author: X. C. Lou, J. J. Walsh, D. N. Brown, Corrado Angelini, P. C. Bloom, Stephen Sekula, D. Lopes Pegna, Colin Jessop, A. Khan, C. Bozzi, G. De Nardo, K. Honscheid, R. Prepost, P. Lewis, A. G. Denig, B. N. Ratcliff, Stefan Spanier, P. Patteri, Timothy Gershon, M. Posocco, Sw. Banerjee, W. Dunwoodie, M. Morandin, Alessandro Pilloni, J. L. Ritchie, C. Touramanis, E. O. Olaiya, R. Stroili, M. Hess, G. J. King, B. Bhuyan, S. I. Serednyakov, O. Grünberg, G. Vasseur, K. T. Flood, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, R. Godang, D. R. Peimer, J. Dorfan, C. Hast, L. T. Kerth, T. S. Mattison, B. G. Fulsom, E. P. Solodov, T. S. Miyashita, V. E. Blinov, S. Pacetti, R. Cowan, D. Aston, R. Y. So, D. J. Lange, G. Piredda, H. W. Wulsin, Yu. G. Kolomensky, W. Panduro Vazquez, Abner Soffer, H. L. Lynch, M. T. Graham, R. Faccini, G. Rizzo, F. Ferrarotto, A. J. Lankford, M. Rama, F. Le Diberder, R. Andreassen, J. R. Fry, F. Anulli, T. Leddig, J. A. McKenna, A. Oyanguren, H. R. Band, Bruce Schumm, E. Grauges, Mario Giorgi, J. Bougher, J. D. Richman, G. Lynch, A. Snyder, R. Gorodeisky, W. S. Lockman, M. Bellis, M. R. Convery, Christopher West, C. Hearty, Pablo Villanueva-Perez, M. Simard, D. A. Roberts, B. C. Wray, R. H. Schindler, Sridhara Dasu, C. H. Cheng, Dmytro Kovalskyi, J. P. Lees, Hossain Ahmed, R. de Sangro, G. Grosdidier, A. M. Lutz, D. Su, N. Tasneem, Aidan Randle-Conde, M. Franco Sevilla, V. Luth, G. A. Cowan, Sau Lan Wu, A. Hafner, E. M. T. Puccio, A. Roodman, E. Fioravanti, Roland Waldi, F. Ferroni, Andrei Gritsan, M. Piccolo, G. Batignani, F. Simonetto, T. Pulliam, Maria Roberta Monge, Paul Fraser Harrison, S. Passaggio, C. Bünger, F. De Mori, M. Mandelkern, V. Santoro, A. Stocchi, Andrei Salnikov, D. B. Macfarlane, E. Paoloni, Heiko Lacker, P. M. Patel, W. H. Toki, Stephen Robert Wagner, Andrea Rodriguez Perez, James R. Wilson, William T. Ford, H. Briand, A. Jawahery, Claudio Campagnari, Andreas Filippi, S. Martellotti, Simon Akar, G. Cibinetto, S. H. Robertson, M. Carpinelli, R. Calabrese, G. Onorato, Chunhui Chen, S. Luitz, E. Feltresi, J. R. Smith, K. R. Schubert, H. H. F. Choi, Enrico Robutti, P. Ongmongkolkul, E. Ben-Haim, Herbert Koch, D. Lindemann, A. Calcaterra, G. Eigen, S. Emery, A. M. Eisner, Elisa Manoni, J. Chauveau, I. M. Nugent, M. Verderi, R. Cenci, Maurizio Martinelli, A. Zallo, M. K. Sullivan, S. Playfer, Yu. I. Skovpen, M. Feng, Marco Bomben, B. Oberhof, F. Forti, K. Griessinger, J. M. Roney, D. S. Chao, U. Mallik, V. B. Golubev, M. J. Lewczuk, M. Fritsch, Brian Meadows, M. Davier, Eleonora Luppi, A. Palano, E. A. Kravchenko, W. R. Innes, Gabriele Simi, Crisostomo Sciacca, David Hutchcroft, F. Di Lodovico, M. Lo Vetere, C. L. Davis, M. V. Purohit, P. D. Dauncey, H. Neal, T. Hartmann, A. Adametz, D. J. Payne, Douglas Wright, J. Albert, D. W G S Leith, A. R. Buzykaev, A. Beaulieu, P. Taras, P. C. Kim, Tim Adye, Maurizio Biasini, R. D. Kass, D. J. Summers, Michael Sokoloff, Z. C. Huard, B. Malaescu, M. Gaspero, J. P. Coleman, R. J. Sobie, M. J. Lee, G. Sciolla, G. R. Bonneaud, Owen Rosser Long, A. Seiden, L. Vitale, F. Martinez-Vidal, Dominik Müller, S. Prell, B. Hamilton, M. Ebert, J. A. Ernst, U. Uwer, James H Cochran, V. Poireau, A. M. Rossi, G. Calderini, Joseph Izen, A. P. Onuchin, L. Sun, Alberto Cervelli, Roger Barlow, Martino Margoni, D. J. Bard, A. Lusiani, R. C. Field, V. P. Druzhinin, Adrian John Bevan, Alessandro Gaz, T. M. Hong, V. Prasad, J. Ocariz, Marcello Rotondo, J. W. Gary, R. Cheaib, L. M. Cremaldi, W. J. Wisniewski, J. M. LoSecco, Y. B. Pan, R. F. Schwitters, R. Kowalewski, A. M. Ruland, Denis Derkach, D. G. Hitlin, Nicola Neri, Giulia Casarosa, G. Wormser, T. Schroeder, B. G. Pushpawela, R. Contri, B. Echenard, D. Bernard, S. Bettarini, George Lafferty, R. Ayad, L. Piemontese, G. Finocchiaro, E. Gabathuler, F. C. Porter, M. Chrzaszcz, C. Voß, D. Bettoni, M. S. Alam, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, G. P. Dubois-Felsmann, J. Va'Vra, Ph Leruste, N. Arnaud, K. Yu. Todyshev, G. Raven, P. R. Burchat, Biplab Dey, Fergus Wilson, P. Sonnek, I. M. Peruzzi, F. Bianchi, M. Perl, S. Dittrich, R. Sacco, L. Li Gioi, B. Spaan, W. Gradl, L. Lanceri, A. J.S. Smith, D. Gamba, N. Guttman, B. Stugu, G. Marchiori, R. M. White, C. Cartaro, and P. Roudeau
Subjects: Physics, Particle physics, Muon, Photon, Anomalous magnetic dipole moment, Electron–positron annihilation, Dark matter, General Physics and Astronomy, Context (language use), Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, Dark photon, Standard Model, Nuclear physics
Abstract: Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A^{'}), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e^{+}e^{-}→γA^{'}, A^{'}→e^{+}e^{-}, μ^{+}μ^{-} using 514 fb^{-1} of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10^{-4}-10^{-3} for dark photon masses in the range 0.02-10.2 GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon.
Published: 2014

154. Measurements of directCPasymmetries inB→Xsγdecays using sum of exclusive decays

Author: A. Oyanguren, R. Godang, L. M. Cremaldi, B. Lindquist, A. M. Ruland, Elisa Guido, J. L. Ritchie, C. Touramanis, P. C. Bloom, S. I. Serednyakov, L. Piemontese, G. P. Dubois-Felsmann, P. Biassoni, O. Grünberg, I. M. Peruzzi, W. F. Wang, D. G. Hitlin, E. O. Olaiya, Stefan Spanier, Florian Urs Bernlochner, E. Gabathuler, D. M. Strom, M. Morandin, F. C. Porter, R. Y. So, U. Uwer, R. C. Field, F. Palombo, T. Lueck, Andrea Rodriguez Perez, James R. Wilson, R. Stroili, James D. Olsen, G. Eigen, D. Derkach, T. S. Mattison, B. C. Wray, R. Andreassen, H. A. Neal, D. Monorchio, Abner Soffer, E. P. Solodov, Gabriele Simi, Christopher West, Nicola Neri, S. Passaggio, C. Hast, D. J. Lange, G. Piredda, T. E. Latham, C. L. Davis, F. Bianchi, J. Bougher, C. Voß, M. Bellis, A. Calcaterra, D. Su, C. Bünger, M. Morii, V. E. Blinov, P. D. Dauncey, M. Piccolo, Ch Yèche, T. Hartmann, E. Grauges, Mario Giorgi, S. H. Robertson, A. R. Buzykaev, Sridhara Dasu, A. Jawahery, R. F. Schwitters, T. J. Gershon, C. Cartaro, M. Perl, G. Cibinetto, G. Batignani, D. E. Hutchcroft, M. Mandelkern, W. R. Innes, Giulia Casarosa, M. R. Convery, D. W. G. S. Leith, D. Dujmic, D. Bettoni, E. Feltresi, R. Cenci, A. Zallo, A. N. Yushkov, V. B. Golubev, Maria Roberta Monge, Herbert Koch, F. Simonetto, K. Griessinger, E. Paoloni, X. C. Lou, J. J. Walsh, D. B. MacFarlane, G. Rizzo, M. Rama, J. A. McKenna, G. Wormser, Marco Bomben, T. Schroeder, Ph. Leruste, A. Palano, Elisa Manoni, D. Aston, S. Playfer, Yu G. Kolomensky, I. Garzia, D. N. Brown, C. Patrignani, M. Fritsch, G. Calderini, P. Patteri, B. N. Ratcliff, A. G. Denig, B. Bhuyan, M. T. Graham, Eleonora Luppi, W. Park, J. E. Brau, S. Prell, Biplab Dey, B. G. Fulsom, V. Tisserand, James H Cochran, V. Poireau, P. Sonnek, Jose F Benitez, N. Tasneem, D. H. Wright, Aidan Randle-Conde, T. Leddig, H. R. Band, W. S. Lockman, F. Anulli, G. D. Lafferty, F. Le Diberder, Colin Jessop, A. M. Lutz, E. Ben-Haim, Sw. Banerjee, G. R. Bonneaud, Enrico Robutti, P. Ongmongkolkul, S. Sitt, F. De Mori, M. Rotondo, S. Luitz, Heiko Lacker, M. Franco Sevilla, A. Lusiani, S. Pacetti, R. Cowan, R. Prepost, J. Va’vra, Dmytro Kovalskyi, M. Lo Vetere, G. De Nardo, V. P. Druzhinin, Bruce Schumm, A. Stocchi, Andrei Salnikov, J. P. Lees, B. Oberhof, M. Verderi, S. Akar, M. Ebert, Corrado Angelini, C. Hearty, A. P. Wagner, Z. C. Huard, M. J. Lewczuk, J. Chauveau, Douglas Wright, E. Prencipe, Chunhui Chen, K. R. Schubert, V. Luth, Claudio Campagnari, R. Baldini-Ferroli, D. Kirkby, G. Vasseur, Stephen Sekula, D. Lopes Pegna, E. A. Kravchenko, A. Khan, K. T. Flood, D. J. Summers, D. Lindemann, A. Snyder, P. Roudeau, F. Forti, C. Bozzi, K. Honscheid, Crisostomo Sciacca, Alessandro Gaz, R. J. Sobie, T. M. Hong, R. J. Barlow, U. Mallik, M. Posocco, L. Vitale, F. Martinez-Vidal, Andrei Gritsan, Dominik Müller, A. Adametz, R. Schwierz, H. Ahmed, T. S. Miyashita, P. C. Kim, P. Taras, W. T. Meyer, M. Gaspero, W. Dunwoodie, E. Behn, J. P. Coleman, G. Finocchiaro, M. S. Alam, F. F. Wilson, B. G. Pushpawela, F. Di Lodovico, K. Yu. Todyshev, D. J. Payne, R. Sacco, U. Nauenberg, Nicolas Arnaud, B. Spaan, R. Contri, L. T. Kerth, V. Ziegler, W. Gradl, A. J.S. Smith, L. Lanceri, H. H. F. Choi, R. Gorodeisky, S. Emery, Maurizio Martinelli, M. Simard, D. A. Roberts, G. Grosdidier, J. M. Roney, B. Echenard, A. Hafner, D. Bernard, J. G. Smith, E. M. T. Puccio, H. Briand, Maurizio Biasini, S. Bettarini, Owen Rosser Long, A. Seiden, J. A. Ernst, R. Ayad, S. Zambito, G. Onorato, A. Filippi, B. T. Meadows, A. P. Onuchin, L. Sun, Alberto Cervelli, G. Raven, M. D. Sokoloff, P. R. Burchat, Adrian John Bevan, Martin Kocian, D. R. Peimer, R. Frey, Y. B. Pan, R. Kowalewski, G. Sciolla, B. Hamilton, S. Nelson, A. M. Rossi, Joseph Izen, A. Roodman, E. Fioravanti, Roland Waldi, F. Ferroni, Paul Fraser Harrison, P. M. Patel, Stephen Robert Wagner, M. K. Sullivan, S. Martellotti, M. Carpinelli, I. M. Nugent, D. S. Chao, M. Davier, M. J. Lee, Yu. I. Skovpen, G. Lynch, E. Torrence, A. M. Gabareen, W. T. Ford, Tim Adye, R. D. Kass, Martino Margoni, V. Prasad, Roberto Calabrese, D. J. Bard, J. Ocariz, J. W. Gary, R. Cheaib, P. Lewis, J. M. LoSecco, N. B. Sinev, W. J. Wisniewski, G. J. King, B. Malaescu, A. M. Eisner, G. Hamel de Monchenault, M. V. Purohit, J. Albert, M. Wittgen, Rafe Schindler, J. Dorfan, T. Pulliam, V. Santoro, H. L. Lynch, J. R. Fry, C. H. Cheng, R. de Sangro, S. L. Wu, W. H. Toki, H. W. Wulsin, R. Faccini, F. Ferrarotto, A. J. Lankford, J. D. Richman, Pablo Villanueva-Perez, G. A. Cowan, R. M. White, L. Li Gioi, D. Gamba, N. Guttman, B. Stugu, and G. Marchiori
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, Resonance, 01 natural sciences, Asymmetry, Standard Model, Nuclear physics, Dipole, Isospin, 0103 physical sciences, CP violation, B meson, 010306 general physics, media_common
Abstract: We measure the direct CP violation asymmetry, A_(CP), in B→X_sγ and the isospin difference of the asymmetry, ΔA_(CP), using 429 fb^(−1) of data collected at Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e^+e^− storage rings operating at the SLAC National Accelerator Laboratory. B mesons are reconstructed from ten charged B final states and six neutral B final states. We find A_(CP)=+(1.7±1.9±1.0)%, which is in agreement with the Standard Model prediction and provides an improvement on the world average. Moreover, we report the first measurement of the difference between A_(CP) for charged and neutral decay modes, ΔA_(CP)=+(5.0±3.9±1.5)%. Using the value of ΔA_(CP), we also provide 68% and 90% confidence intervals on the imaginary part of the ratio of the Wilson coefficients corresponding to the chromomagnetic dipole and the electromagnetic dipole transitions.
Published: 2014

155. Measurement of Collins asymmetries in inclusive production of charged pion pairs ine+e−annihilation atBABAR

Author: C. Bünger, A. Adametz, F. De Mori, V. Prasad, Roberto Calabrese, A. Jawahery, L. Piemontese, G. Cibinetto, Heiko Lacker, Colin Jessop, R. Prepost, E. Feltresi, P. Taras, J. Ocariz, L. Li Gioi, Emmanuel Olaiya, Tim Adye, R. D. Kass, E. Gabathuler, F. C. Porter, Chunhui Chen, S. Luitz, K. R. Schubert, M. Gaspero, Elisa Guido, D. Gamba, A. M. Gabareen, R. H. Schindler, R. Sacco, A. M. Lutz, E. P. Solodov, V. B. Golubev, A. Palano, R. Cheaib, W. R. Innes, David Hutchcroft, H. Ahmed, P. Patteri, J. L. Ritchie, S. Bettarini, S. Passaggio, R. Baldini-Ferroli, Giulia Casarosa, George Lafferty, J. Chauveau, A. Stocchi, S. I. Serednyakov, M. J. Lee, N. Guttman, G. Wormser, D. Dujmic, W. J. Wisniewski, Douglas Wright, Andrei Salnikov, Abner Soffer, D. Kirkby, G. Vasseur, B. Stugu, D. B. Macfarlane, Elisa Manoni, K. T. Flood, C. Voß, G. Sciolla, R. Y. So, Yu. I. Skovpen, B. Hamilton, M. Ebert, Claudio Campagnari, E. Torrence, R. Ayad, S. Playfer, G. Marchiori, T. Schroeder, R. Andreassen, A. J.S. Smith, D. R. Peimer, Dmytro Kovalskyi, R. Gorodeisky, S. Prell, James H Cochran, V. Poireau, Ch Yèche, M. Simard, D. A. Roberts, Joseph Izen, J. P. Lees, B. Bhuyan, Sw. Banerjee, G. Grosdidier, W. Dunwoodie, R. M. White, Akram Khan, J. M. LoSecco, N. B. Sinev, M. Rotondo, Antonio Rossi, B. G. Fulsom, D. J. Bard, V. Ziegler, A. Lusiani, R. Frey, D. Aston, C. Cartaro, F. Forti, J. Bougher, M. Bellis, Sau Lan Wu, A. Hafner, B. Spaan, S. Martellotti, M. Carpinelli, R. Godang, Jose F Benitez, E. M. T. Puccio, David Lange, V. P. Druzhinin, T. Pulliam, S. Pacetti, R. Cowan, R. Contri, J. W. Gary, G. De Nardo, P. C. Bloom, G. Simi, W. Gradl, Maria Roberta Monge, F. Anulli, L. Lanceri, J. A. McKenna, M. T. Graham, P. Roudeau, V. Santoro, P. Lewis, G. J. King, Corrado Angelini, Stephen Sekula, B. Echenard, T. M. Hong, L. M. Cremaldi, Maurizio Biasini, E. Paoloni, Simon Akar, S. Zambito, D. S. Chao, Martino Margoni, Enrico Robutti, P. Ongmongkolkul, D. Bernard, M. Davier, D. Lopes Pegna, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Stefan Spanier, M. Morandin, G. Onorato, A. M. Ruland, D. Bettoni, C. Bozzi, Pablo Villanueva-Perez, A. Roodman, R. Schwierz, J. Dorfan, U. Uwer, A. Filippi, A. Oyanguren, B. C. Wray, V. E. Blinov, W. F. Wang, B. Malaescu, T. E. Latham, G. Lynch, D. G. Hitlin, K. Honscheid, R. Stroili, B. T. Meadows, G. Raven, E. Fioravanti, Ian Michael Nugent, V. Luth, R. F. Schwitters, Roland Waldi, F. Ferroni, A. P. Wagner, A. Calcaterra, M. D. Sokoloff, P. R. Burchat, G. A. Cowan, I. Garzia, R. J. Barlow, X. C. Lou, J. J. Walsh, M. Posocco, D. M. Strom, D. Su, C. Patrignani, G. Rizzo, V. Tisserand, Owen Rosser Long, A. Seiden, M. Rama, Martin Kocian, G. P. Dubois-Felsmann, J. A. Ernst, E. Grauges, Nicola Neri, M. Piccolo, Andrea Rodriguez Perez, D. Monorchio, James R. Wilson, William T. Ford, H. Briand, Paul Fraser Harrison, D. N. Brown, W. T. Meyer, Mario Giorgi, Bruce Schumm, H. Neal, T. Hartmann, P. M. Patel, M. R. Convery, Sridhara Dasu, A. P. Onuchin, L. Sun, G. Batignani, Stephen Robert Wagner, Alberto Cervelli, D. W G S Leith, E. Prencipe, S. Sitt, A. R. Buzykaev, B. Oberhof, Marco Bomben, M. Mandelkern, M. Lo Vetere, M. J. Lewczuk, S. H. Robertson, C. L. Davis, E. Ben-Haim, Adrian John Bevan, D. Lindemann, C. Touramanis, Christopher West, E. A. Kravchenko, B. G. Pushpawela, R. Cenci, Andrei Gritsan, G. Eigen, A. M. Eisner, A. Zallo, G. Finocchiaro, Paul Dauncey, A. G. Denig, B. N. Ratcliff, A. N. Yushkov, J. E. Brau, G. Hamel de Monchenault, Y. B. Pan, M. S. Alam, R. Kowalewski, M. Fritsch, Crisostomo Sciacca, M. V. Purohit, Herbert Koch, J. Albert, O. Grünberg, C. Hearty, M. Wittgen, Eleonora Luppi, W. Park, F. F. Wilson, J. Va'Vra, K. Yu. Todyshev, H. L. Lynch, Denis Derkach, P. C. Kim, J. R. Fry, D. J. Summers, Jeffrey Richman, C. H. Cheng, K. Griessinger, Yu. G. Kolomensky, R. de Sangro, W. H. Toki, T. S. Mattison, R. J. Sobie, L. Vitale, F. Martinez-Vidal, G. Piredda, H. W. Wulsin, Z. C. Huard, M. Morii, A. Snyder, Dominik Müller, S. Nelson, T. J. Gershon, J. P. Coleman, R. C. Field, Alessandro Gaz, F. Simonetto, G. R. Bonneaud, G. Calderini, N. Tasneem, D. H. Wright, Aidan Randle-Conde, M. Franco Sevilla, P. Biassoni, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, C. Hast, L. T. Kerth, I. M. Peruzzi, F. Bianchi, M. Perl, Ph Leruste, N. Arnaud, B. Lindquist, Biplab Dey, P. Sonnek, M. Verderi, U. Mallik, Maurizio Martinelli, M. K. Sullivan, J. M. Roney, T. S. Miyashita, J. G. Smith, F. Di Lodovico, D. J. Payne, U. Nauenberg, E. Behn, G. M. Vitug, T. Leddig, H. R. Band, W. S. Lockman, H. H. F. Choi, and S. Emery
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, Hadron, BaBar experiment, 01 natural sciences, Asymmetry, B-factory, Momentum, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, media_common
Abstract: We present measurements of Collins asymmetries in the inclusive process e^+e^−→ππX, where π stands for charged pions, at a center-of-mass energy of 10.6 GeV. We use a data sample of 468 fb^(−1) collected by the BABAR experiment at the PEP-II B factory at SLAC, and consider pairs of charged pions produced in opposite hemispheres of hadronic events. We observe clear asymmetries in the distributions of the azimuthal angles in two distinct reference frames. We study the dependence of the asymmetry on several kinematic variables, finding that it increases with increasing pion momentum and momentum transverse to the analysis axis, and with increasing angle between the thrust and beam axis.
Published: 2014

156. Study of the reactione+e−→ψ(2S)π+π−via initial-state radiation atBaBar

Author: R. Cenci, P. Lewis, A. Zallo, M. Fritsch, R. M. White, C. Cartaro, Elisa Guido, J. L. Ritchie, Eleonora Luppi, E. Prencipe, Dmytro Kovalskyi, J. P. Lees, R. Bartoldus, H. Schröder, S. Luitz, Gabriella Sciolla, D. B. MacFarlane, P. Lund, David Nathan Brown, Michael Sigamani, J. W. Gary, T. E. Latham, M. Carpinelli, G. De Nardo, J. Cochran, A. Calcaterra, R. Andreassen, J. F. Benitez, Marcello Rotondo, P. Sonnek, V. Santoro, G. Wormser, Peter S. Kim, W. Dunwoodie, L. M. Cremaldi, G. P. Dubois-Felsmann, C. Voss, B. N. Ratcliff, M. Ebert, A. M. Ruland, D. G. Hitlin, Marco Bomben, Matteo Negrini, A. J. Martinez, F. Forti, Nicola Neri, D. Lindemann, M. Lo Vetere, R. Faccini, Sokoloff, V. B. Golubev, W. J. Wisniewski, E. Grauges, Andrea Rodriguez Perez, R. Ayad, James R. Wilson, William T. Ford, S. H. Robertson, F. Ferrarotto, F. Le Diberder, J. D. Richman, Giorgi, C. Hearty, V. E. Blinov, R. Calabrese, Y. B. Pan, O. Hamon, H. W. Wulsin, A. Khan, R. Kowalewski, Sridhara Dasu, G. Lynch, B. C. Wray, R. Schwierz, S. Passaggio, M. J. Lewczuk, S. Sitt, Andrew Lankford, D. J. Summers, Bjarne Stugu, Douglas Wright, A. Y. Rakitin, I. M. Peruzzi, L. Lanceri, R. Contri, M. L. Kocian, Herbert Koch, C. H. Cheng, R. J. Sobie, C. Bünger, E. Feltresi, Simon Akar, D. Su, R. Prepost, G. Eigen, L. Vitale, A. Adametz, S. I. Serednyakov, F. Bianchi, A. E. Rubin, Crisostomo Sciacca, D. Aston, D. Dujmic, G. Rizzo, Tim Adye, R. D. Kass, K. Griessinger, A. Oyanguren, L. Li Gioi, D. J. Bard, F. Martinez-Vidal, Gabriele Simi, C. L. Davis, S. J. Sekula, A. Jawahery, Elisa Manoni, E. A. Kravchenko, Ch Yèche, J. Va’vra, J. A. McKenna, X. Nguyen, J. R. Fry, Denis Derkach, R. Baldini-Ferroli, S. Playfer, Hamad Ahmed, Maurizio Biasini, S. Stracka, R. de Sangro, F. Simonetto, R. H. Schindler, M. Piccolo, G. Batignani, W. T. Meyer, A. Stocchi, Maria Roberta Monge, D. Kirkby, G. Vasseur, D. R. Muller, P. Patteri, G. Jackson, B. Echenard, M. Mandelkern, G. R. Bonneaud, E. Paoloni, J. Dorfan, S. L. Wu, V. Ziegler, A. V. Telnov, P. Taras, E. P. Solodov, A. P. Onuchin, Tamara Vazquez Schroeder, J. E. Brau, B. Bhuyan, N. Guttman, D. H. Wright, S. Pacetti, R. Cowan, E. Ben-Haim, B. G. Fulsom, D. Gamba, M. Bellis, Yu. I. Skovpen, A. N. Yushkov, B. Hamilton, Owen Rosser Long, W. F. Wang, J. J. Walsh, A. Seiden, K. T. Flood, W. H. Toki, F. Liu, G. Cibinetto, J. A. Ernst, C. C. Young, D. W. G. S. Leith, G. Marchiori, H. Atmacan, R. Kroeger, Enrico Robutti, P. Ongmongkolkul, David Norvil Brown, P. C. Bloom, P. K. Behera, E. Torrence, Ph Leruste, M. L. Perl, A. M. Rossi, Z. J. Guo, N. Arnaud, A. V. Gritsan, Juergen Kroseberg, P. Roudeau, A. M. Gabareen, L. Sun, H. A. Neal, Yu. G. Kolomensky, G. Casarosa, D. Monorchio, M. Gaspero, X. C. Lou, Cheng Chen, A. P. Wagner, R. Sacco, C. Hast, D. J. Lange, G. Piredda, A. M. Eisner, A. Palano, Alberto Cervelli, W. Park, A. J. Edwards, C. P. Jessop, M. Morii, P. D. Dauncey, G. Calderini, T. Hartmann, R. Godang, Claudio Campagnari, J. P. Coleman, T. J. Gershon, H. M. Lacker, H. L. Lynch, M. K. Sullivan, A. R. Buzykaev, J. M. Izen, Matteo Rama, D. R. Peimer, S. Prell, G. Hamel de Monchenault, G. D. Lafferty, V. Poireau, R. Frey, Corrado Angelini, M. H. Kelsey, D. Lopes Pegna, Martino Margoni, C. Touramanis, A. Soffer, D. M. Strom, M. V. Purohit, M. Bondioli, M. Munerato, O. Grünberg, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Yu Todyshev, M. H. Schune, U. Uwer, N. Gagliardi, I. M. Nugent, K. Honscheid, Mazzoni, J. Garra Tico, C. A. Chavez, A. Lusiani, B. A. Schumm, G. Grosdidier, J. Albert, R. Gorodeisky, Z. C. Huard, Denis Bernard, M. Wittgen, R. J. Barlow, M. Simard, D. A. Roberts, Christopher West, M. Posocco, A. J. S. Smith, D. S. Chao, T. M. Hong, R. Stroili, A. M. Lutz, J. Olsen, M. T. Graham, A. Hafner, A. G. Denig, M. Davier, A. Roodman, A. A. Salnikov, J. Chauveau, F. Anulli, E. Fioravanti, T. Pulliam, Alessandro Gaz, F. Ferroni, R. F. Schwitters, P. Biassoni, E. M. T. Puccio, P. M. Patel, Stephen Robert Wagner, K. R. Schubert, E. O. Olaiya, G. Onorato, F. Palombo, T. Lueck, B. T. Meadows, G. Raven, P. R. Burchat, N. Tasneem, Aidan Randle-Conde, M. Franco Sevilla, G. M. Vitug, P. Grenier, D. E. Hutchcroft, C. Dallapiccola, T. Leddig, H. R. Band, W. S. Lockman, Brian Edward Lindquist, M. R. Convery, M. Verderi, U. Mallik, T. S. Miyashita, Mauro Morandin, S. Bettarini, A. J. Bevan, S. M. Spanier, E. Behn, F. Di Lodovico, D. J. Payne, U. Nauenberg, L. T. Kerth, T. S. Mattison, F. F. Wilson, H. H. F. Choi, S. Emery, Maurizio Martinelli, J. M. Roney, V. Prasad, J. Ocariz, J. G. Smith, R. C. Field, R. Cheaib, G. Finocchiaro, V. Luth, R. Waldi, A. Snyder, J. M. LoSecco, N. B. Sinev, Bogdan Malaescu, B. Oberhof, G. J. King, P. F. Harrison, B. Spaan, Silke Nelson, H. Briand, W. Gradl, Sw. Banerjee, Alam, P. J. Clark, D. Bettoni, Florian Urs Bernlochner, I. Garzia, C. Patrignani, V. Tisserand, C. L. Lee, L. Piemontese, E. Gabathuler, W. R. Innes, F. C. Porter, and D. J. Asgeirsson
Subjects: Physics, Nuclear and High Energy Physics, Luminosity (scattering theory), Mass distribution, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, State (functional analysis), Radiation, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, law, 0103 physical sciences, Pi, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider
Abstract: We study the process e+e−→ψ(2S)π+π− with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ(nS) (n=2,3,4) resonances and correspond to an integrated luminosity of 520 fb−1. We investigate the ψ(2S)π+π− mass distribution from 3.95 to 5.95 GeV/c2, and measure the center-of-mass energy dependence of the associated e+e−→ψ(2S)π+π− cross section. The mass distribution exhibits evidence of two resonant structures. A fit to the ψ(2S)π+π− mass distribution corresponding to the decay mode ψ(2S)→J/ψπ+π− yields a mass value of 4340±16 (stat) ±9 (syst) MeV/c2 and a width of 94±32 (stat) ±13 (syst) MeV for the first resonance, and for the second a mass value of 4669±21 (stat) ±3 (syst) MeV/c2 and a width of 104±48 (stat) ±10 (syst) MeV. In addition, we show the π+π− mass distributions for these resonant regions.
Published: 2014

157. Antideuteron production inϒ(nS)decays and ine+e−→qq¯ats≈10.58 GeV

Author: Elisa Manoni, S. Playfer, Akram Khan, M. T. Graham, T. S. Mattison, C. Hast, G. Piredda, W. Panduro Vazquez, M. Morii, T. J. Gershon, A. Oyanguren, D. Bettoni, C. Touramanis, O. Grünberg, S. Bettarini, Colin Jessop, X. C. Lou, J. J. Walsh, R. Prepost, Gabriele Simi, C. L. Davis, D. N. Brown, A. P. Wagner, A. G. Denig, J. L. Ritchie, H. W. Wulsin, V. E. Blinov, B. Spaan, H. A. Neal, G. J. King, M. J. Lee, G. Sciolla, Weitao Wang, E. P. Solodov, T. S. Miyashita, Mauro Morandin, G. P. Dubois-Felsmann, R. Ayad, M. Lo Vetere, W. Gradl, B. Hamilton, M. Ebert, S. I. Serednyakov, Ian Michael Nugent, L. Lanceri, G. D. Lafferty, D. R. Peimer, Florian Urs Bernlochner, F. Palombo, T. Lueck, Bruce Schumm, I. Garzia, F. De Mori, M. L. Perl, James D. Olsen, G. Rizzo, C. Patrignani, V. Tisserand, R. C. Field, T. Hartmann, Joseph Izen, Z. C. Huard, Heiko Lacker, L. T. Kerth, A. M. Lutz, N. Tasneem, R. Contri, E. Prencipe, J. R. Fry, G. Finocchiaro, V. Luth, R. Y. So, Jeffrey Richman, G. Vasseur, Yu. G. Kolomensky, A. Roodman, K. T. Flood, W. J. Wisniewski, Aidan Randle-Conde, A. R. Buzykaev, M. S. Alam, R. Andreassen, D. E. Hutchcroft, M. Franco Sevilla, Abner Soffer, T. Leddig, E. Fioravanti, T. Pulliam, Enrico Robutti, P. Ongmongkolkul, Chunhui Chen, K. R. Schubert, H. R. Band, A. Stocchi, A. Snyder, W. S. Lockman, L. Piemontese, C. H. Cheng, A. Beaulieu, Roland Waldi, R. F. Schwitters, S. Passaggio, F. Ferroni, Maurizio Biasini, J. Bougher, B. Malaescu, M. R. Convery, B. Echenard, F. F. Wilson, J. Chauveau, G. R. Bonneaud, Dmytro Kovalskyi, J. P. Lees, C. Bünger, A. Calcaterra, D. Bernard, E. Gabathuler, W. R. Innes, Claudio Campagnari, D. W. G. S. Leith, R. de Sangro, A. A. Salnikov, Andrei Gritsan, E. Grauges, F. C. Porter, S. L. Wu, G. Calderini, B. Oberhof, M. Bellis, M. J. Lewczuk, K. Yu. Todyshev, Mario Giorgi, Owen Rosser Long, Corrado Angelini, F. Forti, Stephen Sekula, David Lange, S. Luitz, A. Jawahery, G. Cibinetto, Paul Fraser Harrison, A. Seiden, Sridhara Dasu, Maria Roberta Monge, D. Lopes Pegna, Marco Bomben, E. A. Kravchenko, V. Prasad, Roberto Calabrese, W. H. Toki, M. Verderi, S. Sitt, M. Chrzaszcz, Peter S. Kim, C. Voß, Alessandro Gaz, P. Patteri, J. A. McKenna, D. Lindemann, C. Bozzi, V. Santoro, E. Feltresi, B. N. Ratcliff, Douglas Wright, B. G. Pushpawela, P. C. Bloom, P. M. Patel, J. Ocariz, Emmanuel Olaiya, E. Paoloni, U. Mallik, Crisostomo Sciacca, D. Aston, J. A. Ernst, K. Honscheid, R. Cenci, P. Lewis, A. M. Eisner, Sw. Banerjee, A. P. Onuchin, L. Sun, A. Zallo, B. Bhuyan, Paul Dauncey, Stephen Robert Wagner, Alberto Cervelli, R. J. Barlow, V. B. Golubev, G. Lynch, Adrian John Bevan, M. Posocco, B. G. Fulsom, M. Fritsch, S. Martellotti, R. Cheaib, M. Carpinelli, Matteo Rama, Y. B. Pan, R. Kowalewski, Eleonora Luppi, A. Palano, Stefan Spanier, T. E. Latham, Antonio Rossi, S. Prell, J. M. LoSecco, M. V. Purohit, J. Albert, Denis Derkach, S. Pacetti, R. Cowan, James H Cochran, U. Uwer, V. Poireau, D. S. Chao, M. K. Sullivan, R. Stroili, S. H. Robertson, M. Davier, A. Lusiani, Herbert Koch, V. P. Druzhinin, K. Griessinger, Andrea Rodriguez Perez, James R. Wilson, William T. Ford, H. Briand, T. M. Hong, A. Adametz, P. Taras, M. Gaspero, J. P. Coleman, G. Eigen, R. Godang, H. L. Lynch, Christopher West, C. Hearty, D. J. Summers, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, H. Ahmed, F. Simonetto, R. H. Schindler, Martino Margoni, Yu. I. Skovpen, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, H. H. F. Choi, J. Dorfan, S. Emery, Maurizio Martinelli, J. M. Roney, Tim Adye, R. D. Kass, J. G. Smith, Ph Leruste, N. Arnaud, Pablo Villanueva-Perez, D. J. Bard, F. Di Lodovico, D. J. Payne, F. Anulli, I. M. Peruzzi, F. Bianchi, G. A. Cowan, L. Li Gioi, J. Va’vra, S. Dittrich, D. Gamba, Biplab Dey, N. Guttman, P. Sonnek, B. Stugu, G. Marchiori, Giulia Casarosa, G. Wormser, R. M. White, C. Cartaro, M. Rotondo, T. Schroeder, W. Dunwoodie, P. Roudeau, G. De Nardo, L. M. Cremaldi, A. M. Ruland, B. C. Wray, D. Su, D. G. Hitlin, M. Piccolo, G. Batignani, M. Mandelkern, E. Ben-Haim, Nicola Neri, R. Sacco, A. J.S. Smith, R. Gorodeisky, M. Simard, D. A. Roberts, G. Grosdidier, A. Hafner, E. M. T. Puccio, J. W. Gary, D. B. MacFarlane, Simon Akar, G. Onorato, A. Filippi, B. T. Meadows, G. Raven, M. D. Sokoloff, and P. R. Burchat
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, 010306 general physics, Collider, Bar (unit)
Abstract: We present measurements of the inclusive production of antideuterons in e^+e^− annihilation into hadrons at ≈10.58 GeV center-of-mass energy and in Υ(1S,2S,3S) decays. The results are obtained using data collected by the BABAR detector at the PEP-II electron-positron collider. Assuming a fireball spectral shape for the emitted antideuteron momentum, we find B(Υ(1S)→d[bar]X)=(2.81±0.49(stat)^(+0.20)_(−0.24)(syst))×10^(−5), B(Υ(2S)→d[bar]X)=(2.64±0.11(stat)^(+0.26)(−0.21)(syst))×10^(−5), B(Υ(3S)→d[bar]X)=(2.33±0.15(stat)^(+0.31)_(−0.28)(syst))×10^(−5), and σ(e^+e^− →d[bar]X)=(9.63±0.41(stat)^(+1.17)_(−1.01)(syst) fb.
Published: 2014

158. Dalitz plot analysis ofηc→K+K−ηandηc→K+K−π0in two-photon interactions

Author: M. Rotondo, G. De Nardo, A. Roodman, E. Fioravanti, T. Pulliam, Roland Waldi, F. Ferroni, B. C. Wray, D. Su, M. Piccolo, F. De Mori, G. Batignani, M. Mandelkern, V. Prasad, E. Ben-Haim, Roberto Calabrese, Paul Fraser Harrison, Heiko Lacker, J. Ocariz, Emmanuel Olaiya, H. A. Neal, Giulia Casarosa, G. Wormser, P. M. Patel, J. L. Ritchie, S. I. Serednyakov, Stephen Robert Wagner, J. M. LoSecco, Chunhui Chen, K. R. Schubert, T. Schroeder, W. Dunwoodie, S. H. Robertson, T. Hartmann, A. P. Wagner, G. J. King, J. Chauveau, S. Emery, M. J. Lee, Herbert Koch, R. Y. So, G. Sciolla, A. R. Buzykaev, B. Hamilton, M. Ebert, R. Andreassen, Maurizio Biasini, A. A. Salnikov, Bruce Schumm, Martino Margoni, L. M. Cremaldi, H. H. F. Choi, K. Griessinger, M. L. Perl, B. Malaescu, Joseph Izen, A. M. Ruland, E. Prencipe, A. Beaulieu, S. Martellotti, M. Carpinelli, Owen Rosser Long, A. Seiden, Maurizio Martinelli, P. Patteri, Yu. I. Skovpen, D. G. Hitlin, J. M. Roney, A. G. Denig, B. Bhuyan, X. C. Lou, J. J. Walsh, Corrado Angelini, B. G. Fulsom, D. E. Hutchcroft, Stephen Sekula, J. A. Ernst, T. Leddig, Nicola Neri, D. Lopes Pegna, Andrei Gritsan, D. N. Brown, H. R. Band, Enrico Robutti, P. Ongmongkolkul, J. G. Smith, D. S. Chao, W. S. Lockman, M. Davier, C. Bozzi, K. Honscheid, A. P. Onuchin, L. Sun, Alberto Cervelli, M. K. Sullivan, J. R. Fry, R. J. Barlow, Colin Jessop, R. Prepost, F. Di Lodovico, M. R. Convery, M. Posocco, D. J. Payne, C. H. Cheng, Jeffrey Richman, Yu. G. Kolomensky, F. Anulli, Z. C. Huard, M. Hess, Adrian John Bevan, R. de Sangro, S. L. Wu, B. Oberhof, C. Bünger, M. J. Lewczuk, Antonio Rossi, Andrea Rodriguez Perez, James R. Wilson, William T. Ford, M. Verderi, H. Briand, A. Calcaterra, W. H. Toki, Tim Adye, S. Pacetti, R. D. Kass, R. Cowan, A. Jawahery, G. Cibinetto, Alessandro Gaz, E. A. Kravchenko, G. Vasseur, K. T. Flood, U. Mallik, Y. B. Pan, A. Oyanguren, A. M. Eisner, Marco Bomben, E. Feltresi, R. Cenci, P. Lewis, R. Kowalewski, G. Eigen, A. Zallo, Paul Dauncey, P. C. Bloom, Crisostomo Sciacca, D. Aston, Douglas Wright, M. V. Purohit, M. Fritsch, J. Albert, Stefan Spanier, M. Morandin, Eleonora Luppi, C. Touramanis, U. Uwer, R. Stroili, A. M. Lutz, Denis Derkach, W. J. Wisniewski, Weitao Wang, E. P. Solodov, T. S. Miyashita, E. Grauges, S. Passaggio, Mario Giorgi, T. E. Latham, O. Grünberg, D. R. Peimer, Sridhara Dasu, V. B. Golubev, A. Palano, J. Bougher, M. Bellis, T. S. Mattison, C. Hast, G. Piredda, W. Panduro Vazquez, M. Morii, T. J. Gershon, Elisa Manoni, S. Playfer, Akram Khan, M. T. Graham, M. Lo Vetere, G. R. Bonneaud, D. W. G. S. Leith, Abner Soffer, G. Calderini, R. Cheaib, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, L. T. Kerth, N. Tasneem, Aidan Randle-Conde, M. Franco Sevilla, Maria Roberta Monge, J. A. McKenna, E. Paoloni, R. C. Field, G. Finocchiaro, V. Luth, M. S. Alam, A. Snyder, F. F. Wilson, K. Yu. Todyshev, B. N. Ratcliff, R. F. Schwitters, B. Spaan, W. Gradl, L. Lanceri, H. W. Wulsin, V. E. Blinov, A. Adametz, F. Simonetto, R. H. Schindler, S. Bettarini, G. Rizzo, George Lafferty, M. Rama, P. Taras, G. P. Dubois-Felsmann, M. Gaspero, J. P. Coleman, R. Ayad, S. Prell, James H Cochran, V. Poireau, A. Lusiani, V. P. Druzhinin, Dmytro Kovalskyi, J. P. Lees, T. M. Hong, C. Hearty, Biplab Dey, David Lange, D. J. Summers, V. Santoro, P. Sonnek, S. Luitz, R. J. Sobie, L. Vitale, I. M. Peruzzi, F. Martinez-Vidal, Dominik Müller, B. G. Pushpawela, R. Contri, F. Bianchi, D. Lindemann, B. Echenard, D. Bernard, S. Dittrich, H. Ahmed, R. Godang, Sw. Banerjee, H. L. Lynch, J. Dorfan, L. Piemontese, Peter S. Kim, E. Gabathuler, W. R. Innes, F. C. Porter, Ph Leruste, N. Arnaud, Christopher West, M. Chrzaszcz, C. Voß, L. Li Gioi, J. Va’vra, G. Lynch, D. Bettoni, D. Gamba, Ian Michael Nugent, N. Guttman, B. Stugu, I. Garzia, C. Patrignani, V. Tisserand, G. Marchiori, R. M. White, C. Cartaro, A. Stocchi, P. Roudeau, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Claudio Campagnari, Pablo Villanueva-Perez, D. J. Bard, G. A. Cowan, R. Gorodeisky, M. Simard, D. A. Roberts, G. Grosdidier, A. Hafner, F. Forti, E. M. T. Puccio, J. W. Gary, D. B. MacFarlane, Gabriele Simi, C. L. Davis, R. Sacco, A. J.S. Smith, Simon Akar, G. Onorato, A. Filippi, B. T. Meadows, G. Raven, M. D. Sokoloff, and P. R. Burchat
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Dalitz plot, 01 natural sciences, Measure (mathematics), law.invention, Nuclear physics, Pion, law, 0103 physical sciences, Mass spectrum, 010306 general physics, Collider
Abstract: We study the processes γγ→K+K−η and γγ→K+K−π0 using a data sample of 519 fb−1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n=2,3,4) resonances. We observe ηc→K+K−π0 and ηc→K+K−η decays, measure their relative branching fraction, and perform a Dalitz plot analysis for each decay. We observe the K∗0(1430)→Kη decay and measure its branching fraction relative to the Kπ decay mode to be R(K∗0(1430))=B(K∗0(1430)→Kη)B(K∗0(1430)→Kπ)=0.092±0.025+0.010−0.025. The ηc→K+K−η and K∗0(1430)→Kη results correspond to the first observations of these channels. The data also show evidence for ηc(2S)→K+K−π0 and first evidence for ηc(2S)→K+K−η.
Published: 2014

159. Evidence for the baryonic decayB¯0→D0ΛΛ¯

Author: Elisa Guido, J. L. Ritchie, S. I. Serednyakov, Dmytro Kovalskyi, J. P. Lees, R. Y. So, V. Santoro, R. Andreassen, B. Spaan, D. R. Peimer, W. Gradl, L. Lanceri, R. Frey, V. Prasad, R. C. Field, G. Finocchiaro, V. Luth, M. S. Alam, A. Snyder, Abner Soffer, B. N. Ratcliff, K. Yu. Todyshev, S. Martellotti, M. Carpinelli, R. Schwierz, B. Lindquist, Ch Yèche, W. T. Meyer, Maurizio Martinelli, H. W. Wulsin, J. Ocariz, V. E. Blinov, J. M. Roney, A. Adametz, Maria Roberta Monge, J. W. Gary, G. Rizzo, R. Cheaib, J. A. McKenna, E. Paoloni, D. Payne, S. Luitz, J. R. Fry, I. M. Nugent, Weitao Wang, E. P. Solodov, Y. B. Pan, U. Uwer, A. Oyanguren, Bruce Schumm, Douglas Wright, J. M. LoSecco, R. Kowalewski, J. F. Benitez, G. De Nardo, R. Sacco, D. S. Chao, C. H. Cheng, Roger Barlow, Martino Margoni, R. de Sangro, E. Prencipe, X. C. Lou, N. B. Sinev, M. Lo Vetere, P. Taras, M. Davier, A. P. Wagner, Mauro Morandin, H. H. F. Choi, D. N. Brown, A. Roodman, F. Di Lodovico, U. Nauenberg, Yu. I. Skovpen, E. Torrence, G. J. King, E. Fioravanti, T. Pulliam, Roland Waldi, F. Ferroni, M. Gaspero, F. Anulli, F. Simonetto, R. H. Schindler, A. J.S. Smith, R. Gorodeisky, M. Simard, D. A. Roberts, B. G. Pushpawela, Andrei Gritsan, W. H. Toki, S. Nelson, Denis Derkach, R. M. White, Paul Fraser Harrison, H. A. Neal, D. Monorchio, Matteo Rama, G. Grosdidier, C. Cartaro, A. M. Eisner, Gabriele Simi, C. L. Davis, F. De Mori, P. M. Patel, Marcello Rotondo, Sau Lan Wu, A. Hafner, S. M. Spanier, S. Prell, A. N. Yushkov, L. M. Cremaldi, E. M. T. Puccio, Stephen Robert Wagner, G. Hamel de Monchenault, S. Bettarini, George Lafferty, James H Cochran, V. Poireau, Heiko Lacker, Timothy Gershon, P. D. Dauncey, R. Stroili, E. Behn, B. C. Wray, M. V. Purohit, Maurizio Biasini, B. Malaescu, G. P. Dubois-Felsmann, Michael Sokoloff, J. Bougher, A. A. Salnikov, J. R. Smith, T. Hartmann, A. M. Gabareen, J. Albert, Tim Adye, A. Lusiani, R. D. Kass, D. B. MacFarlane, R. Ayad, M. Wittgen, A. M. Ruland, D. Su, V. P. Druzhinin, Chunhui Chen, K. R. Schubert, E. Ben-Haim, Simon Akar, S. Zambito, M. Bellis, A. R. Buzykaev, Owen Rosser Long, A. Seiden, M. J. Lee, C. Touramanis, G. Onorato, M. Piccolo, J. Chauveau, R. Contri, G. Batignani, A. Filippi, G. Sciolla, B. Hamilton, M. Ebert, P. C. Bloom, T. M. Hong, M. Mandelkern, G. Raven, J. A. Ernst, O. Grünberg, M. L. Perl, A. M. Rossi, D. G. Hitlin, Joseph Izen, P. R. Burchat, B. Echenard, D. Bernard, M. Verderi, A. M. Lutz, A. P. Onuchin, L. Sun, C. Hearty, W. J. Wisniewski, P. Roudeau, L. Li Gioi, H. Ahmed, R. F. Schwitters, J. Va’vra, Alberto Cervelli, S. Pacetti, S. Passaggio, U. Mallik, R. Cowan, D. J. Summers, A. Stocchi, T. S. Mattison, V. B. Golubev, Adrian John Bevan, A. Palano, T. S. Miyashita, C. Hast, Corrado Angelini, Nicola Neri, D. J. Lange, Stephen Sekula, R. J. Sobie, D. Lopes Pegna, L. Vitale, D. Gamba, G. Piredda, A. Khan, Claudio Campagnari, C. Bozzi, M. Morii, David Hutchcroft, K. Honscheid, A. Calcaterra, F. Martinez-Vidal, Dominik Müller, M. Posocco, C. Bünger, Andrea Rodriguez Perez, William T. Ford, N. Guttman, G. M. Vitug, R. Calabrese, D. Dujmic, H. Briand, Elisa Manoni, B. Stugu, A. Jawahery, F. Forti, S. Playfer, T. Leddig, G. Cibinetto, R. Godang, M. T. Graham, Peter S. Kim, H. R. Band, E. Feltresi, Giulia Casarosa, G. Wormser, G. Lynch, D. Bettoni, M. L. Kocian, H. L. Lynch, W. S. Lockman, G. Marchiori, D. M. Strom, R. Faccini, Marco Bomben, F. Ferrarotto, A. J. Lankford, F. Le Diberder, I. Garzia, D. H. Wright, Thomas Latham, C. Patrignani, J. D. Richman, M. R. Convery, V. Tisserand, D. Lindemann, Pablo Villanueva-Perez, R. Cenci, P. Lewis, D. J. Bard, Christopher West, Sw. Banerjee, T. Schroeder, A. Zallo, J. R. Wilson, G. A. Cowan, A. G. Denig, M. Fritsch, J. E. Brau, Eleonora Luppi, W. Park, I. M. Peruzzi, W. Dunwoodie, L. Piemontese, F. Bianchi, E. Gabathuler, W. R. Innes, F. C. Porter, Yu. G. Kolomensky, P. Patteri, C. Voß, E. Grauges, Mario Giorgi, B. Bhuyan, J. J. Walsh, Sridhara Dasu, B. G. Fulsom, Biplab Dey, S. Sitt, Fergus Wilson, P. Sonnek, Colin Jessop, R. Prepost, J. Dorfan, Ph Leruste, N. Arnaud, R. Baldini-Ferroli, D. Kirkby, G. Vasseur, K. T. Flood, M. K. Sullivan, S. H. Robertson, S. Emery, Herbert Koch, K. Griessinger, Brian Meadows, V. Ziegler, Z. C. Huard, J. P. Coleman, Alessandro Gaz, P. Biassoni, E. O. Olaiya, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, L. T. Kerth, G. R. Bonneaud, D. W. G. S. Leith, G. Calderini, N. Tasneem, Aidan Randle-Conde, M. Franco Sevilla, Enrico Robutti, P. Ongmongkolkul, G. Eigen, B. Oberhof, M. J. Lewczuk, E. A. Kravchenko, Crisostomo Sciacca, and D. Aston
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Lambda, 01 natural sciences, Baryon, Charmed baryons, 0103 physical sciences, High Energy Physics::Experiment, B meson, Atomic physics, 010306 general physics, Bar (unit)
Abstract: Evidence is presented for the baryonic $B$ meson decay $\bar{B}\rightarrow D^0 \Lambda \bar{\Lambda}$ based on a data sample of $471 \times 10^6$ $B\bar{B}$ pairs collected with the {\it BABAR} detector at the PEP2 asymmetric $e^+e^-$ collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be $\mathcal{B}(\bar{B}\rightarrow D^0 \Lambda \bar{\Lambda}) = (9.8^{+2.9}_{-2.6} \pm 1.9)\times 10^{-6}$, corresponding to a significance of $3.4$ standard deviations including systematic uncertainties. A search for the related baryonic $B$ meson decay $\bar{B}\rightarrow D^0 \Sigma^0 \bar{\Lambda}$ with $\Sigma^0\rightarrow\Lambda\gamma$ is performed and an upper limit $\mathcal{B}(\bar{B}\rightarrow D^0 \Sigma^0 \bar{\Lambda} + \bar{B}\rightarrow D^0 \Lambda \bar{\Sigma}^0) < 3.1 \times 10^{-5}$ is determined at $90\%$ confidence level.
Published: 2014

160. Cross sections for the reactionse+e−→KS0KL0,KS0KL0π+π−,KS0KS0π+π−, andKS0KS0K+K−from events with initial-state radiation

Author: R. Contri, Simon Akar, Matteo Rama, G. J. King, R. Prepost, Alberto Cervelli, R. Godang, Gabriele Simi, S. Prell, A. V. Gritsan, V. Poireau, C. L. Davis, B. Spaan, H. M. Lacker, P. C. Bloom, A. Soffer, A. Roodman, H. Briand, H. L. Lynch, V. E. Blinov, A. Palano, E. A. Kravchenko, A. Lusiani, P. F. Harrison, W. Gradl, E. Fioravanti, T. Pulliam, R. Gorodeisky, M. Simard, D. A. Roberts, G. Vasseur, D. Lindemann, S. Pacetti, B. Echenard, I. M. Peruzzi, R. Cowan, Roland Waldi, Corrado Angelini, D. Lopes Pegna, V. P. Druzhinin, C. Bozzi, K. Honscheid, B. A. Schumm, M. Posocco, A. M. Lutz, Dmytro Kovalskyi, F. Ferroni, David Hutchcroft, T. M. Hong, H. A. Neal, G. Casarosa, J. Olsen, M. T. Graham, Sau Lan Wu, R. C. Field, K. Yu Todyshev, P. D. Dauncey, T. Hartmann, D. W. G. S. Leith, F. De Mori, Christopher West, J. L. Ritchie, L. Li Gioi, A. Oyanguren, J. P. Lees, C. Buenger, A. R. Buzykaev, A. Hafner, I Skovpen Yu., A. Beaulieu, J. Ocariz, Maurizio Martinelli, P. Patteri, E. M. T. Puccio, A. G. Denig, S. I. Serednyakov, F. Bianchi, S. Dittrich, J. Va’vra, B. C. Wray, G. Finocchiaro, V. Luth, R. Cheaib, R. Y. So, B. Bhuyan, C. Hearty, R. F. Schwitters, M. S. Alam, D. Su, Denis Bernard, G. Wormser, J. M. Roney, P. M. Patel, S. Luitz, Tim Adye, O. Gruenberg, M. Hess, A. M. Eisner, J. M. LoSecco, R. Andreassen, R. D. Kass, V. Prasad, Stephen Robert Wagner, B. G. Fulsom, M. Piccolo, A. Stocchi, C. Hast, D. J. Lange, D. J. Summers, G. Piredda, W. Panduro Vazquez, C. Voss, Bogdan Malaescu, G. Calderini, A. Snyder, K. R. Schubert, L. Piemontese, Mauro Morandin, S. Bettarini, W. J. Wisniewski, R. J. Sobie, M. Morii, A. J. S. Smith, B. Oberhof, L. Vitale, F. Martinez-Vidal, Michael Sokoloff, G. Batignani, M. Mandelkern, M. V. Purohit, G. R. Bonneaud, Maria Roberta Monge, A. Adametz, J. Dorfan, S. Passaggio, N. Guttman, Y. B. Pan, J. Albert, R. Kowalewski, B. Stugu, T. S. Mattison, J. Cochran, J. Chauveau, C. P. Jessop, F. Simonetto, G. Marchiori, R. H. Schindler, E. Grauges, Mario Giorgi, J. J. Walsh, G Kolomensky Yu., B. G. Pushpawela, D. N. Brown, S. J. Sekula, A. Jawahery, P. Taras, E. P. Solodov, M. Verderi, Ph Leruste, N. Arnaud, M. K. Sullivan, B. N. Ratcliff, C. H. Cheng, E. Feltresi, Peter S. Kim, B. Hamilton, Andrea Rodriguez Perez, R. Ayad, William T. Ford, R. Faccini, F. Ferrarotto, A. J. Lankford, M. Gaspero, E. Paoloni, D. Payne, E. Gabathuler, W. R. Innes, F. C. Porter, F. Le Diberder, J. R. Fry, V. Santoro, E. Ben-Haim, M. L. Perl, A. M. Rossi, H. H. F. Choi, J. D. Richman, A. P. Onuchin, Timothy Gershon, S. M. Spanier, J. R. Smith, S. Emery, G. Onorato, R. Stroili, R. Cenci, W. Dunwoodie, R. de Sangro, E. O. Olaiya, X. C. Lou, J. M. Izen, C. Touramanis, G. Cibinetto, F. Di Lodovico, A. Filippi, Z. C. Huard, Pablo Villanueva-Perez, D. B. MacFarlane, S. Martellotti, Cheng Chen, Denis Derkach, G. De Nardo, W. H. Toki, L. Lanceri, P. Lewis, G. Grosdidier, J. W. Gary, Gabriella Sciolla, Enrico Robutti, P. Ongmongkolkul, U. Uwer, G. Raven, A. Calcaterra, George Lafferty, F. Palombo, T. Lueck, A. Zallo, V. B. Golubev, G. Lynch, J. R. Wilson, G. Eigen, G. P. Dubois-Felsmann, Roger Barlow, Martino Margoni, P. R. Burchat, T. Leddig, Biplab Dey, Fergus Wilson, G. A. Cowan, D. R. Peimer, R. Calabrese, Elisa Manoni, J. P. Coleman, H. R. Band, P. Sonnek, A. A. Salnikov, W. S. Lockman, F. Anulli, M. J. Lewczuk, Marcello Rotondo, M. Lo Vetere, L. T. Kerth, L. M. Cremaldi, N. Tasneem, S. Playfer, H. W. Wulsin, M. Chrzaszcz, M. Fritsch, Marco Bomben, K. T. Flood, M. Ebert, M. R. Convery, Alessandro Gaz, S. H. Robertson, R. M. White, Sridhara Dasu, C. Cartaro, A. M. Ruland, Douglas Wright, Eleonora Luppi, R. Sacco, Crisostomo Sciacca, D. Aston, Aidan Randle-Conde, A. Khan, G. Rizzo, J. Bougher, Herbert Koch, M. Franco Sevilla, D. G. Hitlin, D. Gamba, M. Bellis, J. A. McKenna, K. Griessinger, M. Carpinelli, D. J. Bard, F. Forti, Sw. Banerjee, Nicola Neri, Brian Meadows, U. Mallik, Hamad Ahmed, T. S. Miyashita, D. Bettoni, Florian Urs Bernlochner, I. Garzia, M. J. Lee, Thomas Latham, C. Patrignani, V. Tisserand, Maurizio Biasini, D. R. Muller, Tamara Vazquez Schroeder, Owen Rosser Long, A. Seiden, J. A. Ernst, P. Roudeau, L. Sun, C. Campagnari, Adrian John Bevan, I. M. Nugent, D. S. Chao, and M. Davier
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, State (functional analysis), Atomic physics, Radiation, 010306 general physics, 01 natural sciences
Published: 2014

161. Search for the decayB¯0→Λc+p¯pp¯

Author: G. Finocchiaro, D. Lindemann, V. Luth, M. S. Alam, A. Snyder, B. C. Wray, Sw. Banerjee, D. Su, V. B. Golubev, C. Hearty, K. Yu. Todyshev, B. Lindquist, D. J. Summers, M. Piccolo, H. W. Wulsin, A. Palano, R. Sacco, V. E. Blinov, T. S. Mattison, Giulia Casarosa, G. Batignani, Corrado Angelini, R. J. Sobie, G. Wormser, Stephen Sekula, D. Lopes Pegna, G. Rizzo, M. Rama, L. Vitale, F. Martinez-Vidal, Dominik Müller, T. Schroeder, C. Hast, D. J. Lange, B. Oberhof, M. J. Lewczuk, E. A. Kravchenko, Crisostomo Sciacca, D. Aston, M. Mandelkern, David Hutchcroft, G. R. Bonneaud, A. Khan, C. Bozzi, G. J. King, J. A. McKenna, H. Ahmed, J. F. Benitez, Gabriele Simi, G. Piredda, M. Morii, P. Patteri, B. Bhuyan, K. Honscheid, B. Spaan, D. W. G. S. Leith, D. Bettoni, F. Simonetto, R. H. Schindler, C. L. Davis, W. Dunwoodie, Andrea Rodriguez Perez, James R. Wilson, Elisa Guido, J. L. Ritchie, S. I. Serednyakov, W. Gradl, L. Lanceri, Colin Jessop, Michael Sokoloff, M. Lo Vetere, William T. Ford, H. Briand, Enrico Robutti, P. Ongmongkolkul, B. G. Fulsom, A. P. Wagner, M. Posocco, G. Calderini, A. N. Yushkov, R. Prepost, D. Dujmic, A. A. Salnikov, Elisa Manoni, M. J. Lee, B. N. Ratcliff, I. Garzia, N. Tasneem, D. R. Peimer, S. Playfer, Dmytro Kovalskyi, D. H. Wright, R. Contri, R. Frey, Thomas Latham, C. Patrignani, J. P. Lees, V. Tisserand, V. Prasad, X. C. Lou, J. J. Walsh, Roberto Calabrese, E. Ben-Haim, G. De Nardo, S. M. Spanier, R. Schwierz, G. Sciolla, B. Hamilton, M. Ebert, Aidan Randle-Conde, E. Behn, J. R. Smith, J. Ocariz, M. T. Graham, Marcello Rotondo, G. Eigen, A. Stocchi, M. Franco Sevilla, L. M. Cremaldi, M. L. Perl, D. N. Brown, A. M. Rossi, Abner Soffer, Simon Akar, R. Godang, Weitao Wang, E. P. Solodov, R. Y. So, J. W. Gary, A. M. Lutz, S. Zambito, R. Baldini-Ferroli, Joseph Izen, W. J. Wisniewski, D. Kirkby, G. Vasseur, K. T. Flood, L. Piemontese, Ch Yèche, S. Pacetti, H. L. Lynch, Claudio Campagnari, R. Cowan, W. T. Meyer, R. Cheaib, A. M. Ruland, Timothy Gershon, V. Santoro, S. Martellotti, M. Carpinelli, T. Leddig, J. R. Fry, E. Gabathuler, W. R. Innes, R. Cenci, F. C. Porter, A. Calcaterra, C. Touramanis, H. R. Band, G. Onorato, C. H. Cheng, P. Lewis, A. Zallo, D. M. Strom, M. K. Sullivan, W. S. Lockman, R. Andreassen, F. De Mori, S. Passaggio, J. M. LoSecco, Maria Roberta Monge, O. Grünberg, F. Forti, A. Oyanguren, Bruce Schumm, J. Bougher, S. Prell, C. Bünger, Heiko Lacker, R. de Sangro, M. R. Convery, I. M. Nugent, C. Voß, Christopher West, E. Prencipe, M. Fritsch, P. Biassoni, N. B. Sinev, M. Bellis, E. Paoloni, A. Filippi, Eleonora Luppi, H. A. Neal, D. Monorchio, E. O. Olaiya, W. Park, Florian Urs Bernlochner, F. Palombo, T. Lueck, W. H. Toki, James H Cochran, V. Poireau, D. S. Chao, A. Jawahery, Chunhui Chen, K. R. Schubert, Y. B. Pan, P. D. Dauncey, James D. Olsen, P. C. Bloom, D. G. Hitlin, Andrei Gritsan, M. Verderi, M. Davier, A. Roodman, G. Cibinetto, L. T. Kerth, T. Hartmann, A. M. Eisner, B. Echenard, J. Chauveau, S. H. Robertson, E. Fioravanti, T. Pulliam, U. Mallik, Roland Waldi, F. Ferroni, E. Grauges, Mario Giorgi, A. R. Buzykaev, R. Kowalewski, G. Hamel de Monchenault, Sridhara Dasu, T. S. Miyashita, S. Sitt, M. Morandin, Paul Fraser Harrison, G. Raven, E. Feltresi, M. V. Purohit, D. Bernard, J. Albert, P. M. Patel, R. Stroili, S. Emery, M. Wittgen, Herbert Koch, Nicola Neri, Stephen Robert Wagner, A. Lusiani, S. Nelson, V. P. Druzhinin, P. R. Burchat, Denis Derkach, K. Griessinger, Maurizio Biasini, B. Malaescu, Brian Meadows, V. Ziegler, T. M. Hong, Owen Rosser Long, A. Adametz, A. Seiden, R. Gorodeisky, J. A. Ernst, Marco Bomben, H. Schröder, S. Luitz, A. P. Onuchin, L. Sun, Alberto Cervelli, P. Taras, Z. C. Huard, M. Simard, D. A. Roberts, Adrian John Bevan, J. P. Coleman, Douglas Wright, G. Grosdidier, M. Gaspero, Alessandro Gaz, R. F. Schwitters, Sau Lan Wu, A. Hafner, B. G. Pushpawela, E. M. T. Puccio, A. G. Denig, J. E. Brau, D. B. MacFarlane, S. Bettarini, George Lafferty, Yu. G. Kolomensky, A. J.S. Smith, G. P. Dubois-Felsmann, R. Ayad, R. M. White, C. Cartaro, P. Roudeau, L. Li Gioi, J. Va’vra, D. Gamba, N. Guttman, B. Stugu, G. Marchiori, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, J. D. Richman, Pablo Villanueva-Perez, D. J. Bard, G. A. Cowan, A. M. Gabareen, Tim Adye, R. D. Kass, U. Uwer, Roger Barlow, Martino Margoni, Yu. I. Skovpen, E. Torrence, Peter S. Kim, G. Lynch, M. L. Kocian, I. M. Peruzzi, F. Bianchi, J. Dorfan, Ph Leruste, N. Arnaud, Biplab Dey, Fergus Wilson, P. Sonnek, F. Di Lodovico, D. J. Payne, U. Nauenberg, F. Anulli, H. H. F. Choi, Maurizio Martinelli, J. M. Roney, and R. C. Field
Subjects: Charmed baryons, Physics, Nuclear physics, Nuclear and High Energy Physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, Lambda, Bar (unit)
Abstract: We report a search for the decay B^0 → Λ^+_cppp. Using a data sample of 471×10^6 BB pairs collected with the BABAR detector at the PEP-II2 storage ring at SLAC, we find no events and set an upper limit on the branching fraction B(B^0 → Λ^+_cppp)×^(B(Λ^+_c→pK^−π^+))_(0.050)
Published: 2014

162. Evidence for the decayB0→ωωand search forB0→ωϕ

Author: B. C. Wray, R. Cenci, F. De Mori, P. Lewis, A. Zallo, R. Faccini, D. Su, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Heiko Lacker, J. D. Richman, M. Piccolo, M. J. Lee, G. Sciolla, B. Hamilton, M. Ebert, Denis Bernard, M. Fritsch, G. Batignani, Pablo Villanueva-Perez, D. J. Bard, R. Godang, M. L. Perl, Eleonora Luppi, A. M. Rossi, Joseph Izen, M. Mandelkern, Chunhui Chen, K. R. Schubert, E. Ben-Haim, R. Gorodeisky, M. Simard, D. A. Roberts, G. A. Cowan, H. A. Neal, H. L. Lynch, G. J. King, D. Monorchio, A. A. Salnikov, L. Li Gioi, J. Va’vra, Peter S. Kim, D. Bettoni, G. Grosdidier, J. Chauveau, P. D. Dauncey, T. Hartmann, D. Gamba, Martino Margoni, A. Hafner, S. Martellotti, M. Carpinelli, V. E. Blinov, D. M. Strom, B. Oberhof, Giulia Casarosa, G. Wormser, A. R. Buzykaev, Z. C. Huard, Dmytro Kovalskyi, J. P. Lees, N. Guttman, E. M. T. Puccio, M. J. Lewczuk, B. Stugu, G. R. Bonneaud, T. Schroeder, Elisa Guido, J. L. Ritchie, S. I. Serednyakov, I. Garzia, Corrado Angelini, G. Marchiori, E. Grauges, Mario Giorgi, A. Adametz, Stephen Sekula, I. M. Nugent, D. H. Wright, C. Patrignani, G. Lynch, V. Tisserand, D. Lopes Pegna, D. W. G. S. Leith, C. Bünger, D. Lindemann, E. A. Kravchenko, P. C. Bloom, D. S. Chao, M. L. Kocian, W. Dunwoodie, Abner Soffer, A. Khan, Sridhara Dasu, S. Sitt, C. Bozzi, P. Taras, D. B. MacFarlane, Alessandro Gaz, D. Dujmic, Elisa Manoni, K. Honscheid, M. Davier, A. Roodman, Crisostomo Sciacca, D. Aston, S. H. Robertson, G. Calderini, S. Emery, E. Fioravanti, T. Pulliam, A. N. Yushkov, A. Jawahery, G. Cibinetto, R. Y. So, Christopher West, R. J. Barlow, R. Andreassen, R. M. White, M. Posocco, M. Gaspero, Colin Jessop, R. Prepost, Roland Waldi, Biplab Dey, Herbert Koch, A. M. Eisner, J. P. Coleman, F. Ferroni, C. Cartaro, X. C. Lou, J. J. Walsh, Douglas Wright, V. Santoro, S. Playfer, Gabriele Simi, N. Tasneem, L. M. Cremaldi, E. Feltresi, A. P. Onuchin, P. Sonnek, Maria Roberta Monge, C. L. Davis, D. N. Brown, Paul Fraser Harrison, K. Griessinger, C. Hearty, R. Sacco, A. M. Ruland, J. A. McKenna, A. P. Wagner, P. M. Patel, M. Morandin, B. Lindquist, Aidan Randle-Conde, E. Paoloni, Stephen Robert Wagner, I. M. Peruzzi, T. E. Latham, G. Vasseur, P. Roudeau, V. Ziegler, D. J. Summers, P. Patteri, M. Franco Sevilla, U. Uwer, S. Pacetti, R. Cowan, D. G. Hitlin, K. T. Flood, Achille Stocchi, G. D. Lafferty, B. Bhuyan, B. G. Fulsom, M. Rotondo, M. V. Purohit, G. De Nardo, S. M. Spanier, R. J. Sobie, J. Albert, L. Vitale, F. Martinez-Vidal, Dominik Müller, M. Wittgen, F. Bianchi, A. J.S. Smith, A. M. Lutz, W. J. Wisniewski, J. F. Benitez, S. Prell, James H Cochran, V. Poireau, Bruce Schumm, R. Stroili, Weitao Wang, E. P. Solodov, T. S. Miyashita, Nicola Neri, H. Ahmed, E. Prencipe, S. Passaggio, S. Dittrich, A. Lusiani, V. P. Druzhinin, M. Lo Vetere, F. Simonetto, M. K. Sullivan, D. E. Hutchcroft, T. Leddig, R. H. Schindler, V. B. Golubev, Simon Akar, S. Zambito, G. Onorato, J. R. Fry, A. Palano, H. R. Band, A. Filippi, H. W. Wulsin, D. Derkach, G. Rizzo, T. M. Hong, M. Rama, B. Malaescu, W. S. Lockman, C. H. Cheng, A. G. Denig, Andrei Gritsan, R. de Sangro, B. T. Meadows, J. Dorfan, J. E. Brau, S. L. Wu, G. Raven, R. F. Schwitters, M. D. Sokoloff, W. H. Toki, P. R. Burchat, M. Verderi, M. R. Convery, Ph Leruste, N. Arnaud, J. Bougher, M. Bellis, H. H. F. Choi, Yu. G. Kolomensky, Enrico Robutti, P. Ongmongkolkul, Andrea Rodriguez Perez, James R. Wilson, A. Calcaterra, H. Briand, Claudio Campagnari, F. Forti, P. Biassoni, F. Di Lodovico, Marco Bomben, E. O. Olaiya, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, D. J. Payne, L. T. Kerth, U. Nauenberg, F. Anulli, U. Mallik, G. Eigen, V. Prasad, Roberto Calabrese, J. Ocariz, J. W. Gary, R. Cheaib, J. M. LoSecco, N. B. Sinev, R. C. Field, G. Finocchiaro, V. Luth, Maurizio Martinelli, M. S. Alam, A. Snyder, J. M. Roney, F. F. Wilson, J. G. Smith, K. Yu. Todyshev, B. N. Ratcliff, R. Schwierz, W. T. Meyer, B. Spaan, S. Bettarini, W. Gradl, L. Lanceri, G. P. Dubois-Felsmann, R. Ayad, S. Luitz, B. G. Pushpawela, R. Contri, Y. B. Pan, R. Kowalewski, A. M. Gabareen, W. T. Ford, Tim Adye, R. D. Kass, B. Echenard, S. Nelson, Yu. I. Skovpen, E. Torrence, Maurizio Biasini, Owen Rosser Long, A. Seiden, J. A. Ernst, L. Sun, Alberto Cervelli, Adrian John Bevan, M. T. Graham, D. R. Peimer, R. Frey, T. S. Mattison, C. Hast, D. J. Lange, G. Piredda, W. Panduro Vazquez, M. Morii, T. J. Gershon, A. Oyanguren, C. Touramanis, O. Grünberg, Sw. Banerjee, L. Piemontese, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, and C. Voß
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, High Energy Physics::Experiment, B meson, Supersymmetry, 010306 general physics, 01 natural sciences
Abstract: We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471 × 10^6B¯B pairs produced in e^+e^− annihilation at √s = 10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction β(B^0 → ωω) = (1.2 ± 0.3^(+0.3)_(-0.2) × 10^(−6), where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit β(B^0 → ωω) < 0.7 × 10^(−6) at 90% confidence level. These measurements provide the first evidence for the decay B^0 → ωω, and an improvement of the upper limit for the decay B^0 → ωϕ.
Published: 2014

163. Search for lepton-number violatingB+→X−ℓ+ℓ′+decays

Author: A. Roodman, S. I. Serednyakov, E. Fioravanti, T. Pulliam, G. R. Bonneaud, Roland Waldi, F. Ferroni, R. M. White, B. Lindquist, R. Y. So, D. W. G. S. Leith, H. W. Wulsin, Paul Fraser Harrison, C. Cartaro, V. E. Blinov, R. Andreassen, Dmytro Kovalskyi, J. P. Lees, Claudio Campagnari, V. Santoro, G. Calderini, T. Leddig, P. M. Patel, Stephen Robert Wagner, V. Prasad, G. Rizzo, M. Rama, J. A. McKenna, F. Forti, R. Contri, H. R. Band, Giulia Casarosa, G. Wormser, J. F. Benitez, J. Dorfan, W. S. Lockman, Andrea Rodriguez Perez, J. R. Fry, C. H. Cheng, B. Spaan, James R. Wilson, William T. Ford, M. Lo Vetere, H. Briand, R. Cenci, P. Lewis, A. Zallo, R. Godang, M. R. Convery, J. Ocariz, N. Tasneem, Gabriele Simi, T. Schroeder, W. Gradl, C. L. Davis, Michael Sokoloff, R. de Sangro, L. Lanceri, H. L. Lynch, M. J. Lee, Aidan Randle-Conde, J. W. Gary, M. Fritsch, X. C. Lou, J. J. Walsh, W. Dunwoodie, B. N. Ratcliff, R. Schwierz, M. Franco Sevilla, A. Adametz, G. Sciolla, Abner Soffer, A. Calcaterra, W. H. Toki, B. Hamilton, M. Ebert, Ph Leruste, D. M. Strom, D. N. Brown, R. Cheaib, N. Arnaud, B. Echenard, G. Eigen, Eleonora Luppi, W. Park, M. L. Perl, Ch Yèche, A. M. Rossi, R. Faccini, F. Ferrarotto, A. J. Lankford, Maurizio Martinelli, Joseph Izen, S. H. Robertson, F. Le Diberder, D. Bernard, Christopher West, Y. B. Pan, P. C. Bloom, A. P. Wagner, S. Emery, Marcello Rotondo, W. T. Meyer, L. M. Cremaldi, S. Martellotti, M. Carpinelli, Colin Jessop, F. Simonetto, A. Stocchi, J. D. Richman, Maria Roberta Monge, U. Uwer, Herbert Koch, F. De Mori, R. H. Schindler, G. De Nardo, Marco Bomben, R. Prepost, R. Kowalewski, J. M. LoSecco, R. Sacco, Heiko Lacker, A. M. Ruland, R. C. Field, E. Paoloni, G. Finocchiaro, V. Luth, Pablo Villanueva-Perez, M. S. Alam, I. M. Nugent, P. Biassoni, K. Griessinger, Stefan Spanier, J. M. Roney, D. J. Bard, A. M. Eisner, P. Taras, E. O. Olaiya, S. Nelson, E. Ben-Haim, N. B. Sinev, Douglas Wright, M. Morandin, J. R. Smith, Chunhui Chen, K. R. Schubert, Denis Derkach, D. G. Hitlin, Brian Meadows, Bogdan Malaescu, A. Snyder, Florian Urs Bernlochner, F. Palombo, T. Lueck, B. C. Wray, G. A. Cowan, V. Ziegler, G. Hamel de Monchenault, S. Luitz, D. S. Chao, James D. Olsen, J. Chauveau, C. Hearty, L. Li Gioi, J. Va’vra, R. Stroili, G. Vasseur, K. T. Flood, D. R. Peimer, Nicola Neri, M. Gaspero, M. Verderi, K. Yu. Todyshev, M. Davier, Peter S. Kim, D. J. Summers, D. Su, Z. C. Huard, M. Piccolo, L. T. Kerth, R. Frey, G. J. King, M. V. Purohit, J. Albert, U. Mallik, Weitao Wang, E. P. Solodov, T. S. Miyashita, R. J. Sobie, Roger Barlow, Martino Margoni, L. Vitale, D. Gamba, F. Martinez-Vidal, Dominik Müller, G. Batignani, J. P. Coleman, B. G. Pushpawela, M. Wittgen, R. F. Schwitters, F. Di Lodovico, Alessandro Gaz, A. J.S. Smith, N. Guttman, G. Lynch, M. L. Kocian, H. Ahmed, P. Patteri, B. Stugu, M. Mandelkern, D. J. Payne, B. Bhuyan, E. Grauges, Simon Akar, Mario Giorgi, Maurizio Biasini, U. Nauenberg, Sridhara Dasu, Biplab Dey, S. Sitt, B. G. Fulsom, Fergus Wilson, F. Anulli, P. Sonnek, G. Marchiori, J. Bougher, S. Zambito, Owen Rosser Long, A. Seiden, G. Onorato, J. A. Ernst, S. Bettarini, M. Bellis, A. A. Salnikov, A. Filippi, S. Prell, A. G. Denig, J. E. Brau, James H Cochran, V. Poireau, George Lafferty, P. Roudeau, A. P. Onuchin, L. Sun, Alberto Cervelli, M. K. Sullivan, A. Lusiani, G. P. Dubois-Felsmann, Adrian John Bevan, V. P. Druzhinin, G. Raven, R. Ayad, T. M. Hong, A. M. Gabareen, Yu. G. Kolomensky, P. R. Burchat, S. Pacetti, R. Cowan, Tim Adye, R. D. Kass, H. H. F. Choi, A. Oyanguren, I. M. Peruzzi, Bruce Schumm, H. A. Neal, F. Bianchi, D. Monorchio, E. Prencipe, R. Gorodeisky, Yu. I. Skovpen, P. D. Dauncey, E. Torrence, T. Hartmann, M. Simard, D. A. Roberts, A. R. Buzykaev, A. M. Lutz, Andrei Gritsan, Corrado Angelini, Stephen Sekula, Sau Lan Wu, A. Hafner, E. M. T. Puccio, D. Lopes Pegna, C. Bozzi, K. Honscheid, A. N. Yushkov, M. Posocco, D. B. MacFarlane, D. Lindemann, Sw. Banerjee, Timothy Gershon, C. Touramanis, O. Grünberg, G. Grosdidier, R. Calabrese, D. Bettoni, D. Dujmic, Elisa Manoni, S. Playfer, Akram Khan, M. T. Graham, I. Garzia, D. H. Wright, Thomas Latham, C. Patrignani, V. Tisserand, T. S. Mattison, C. Hast, D. J. Lange, G. Piredda, L. Piemontese, M. Morii, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, C. Voß, Enrico Robutti, P. Ongmongkolkul, B. Oberhof, M. J. Lewczuk, E. A. Kravchenko, Crisostomo Sciacca, D. Aston, C. Bünger, A. Jawahery, G. Cibinetto, E. Feltresi, V. B. Golubev, A. Palano, David Hutchcroft, W. J. Wisniewski, S. Passaggio, Elisa Guido, and J. L. Ritchie
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 01 natural sciences, Lepton number, Nuclear physics, Particle decay, 0103 physical sciences, B meson, 010306 general physics, Lepton
Abstract: We report on a search for eleven lepton-number violating processes B^+→X^−l^+l'^+ with X^−=K^−, π^−, ρ^−, K^(*−), or D^− and l^+/l'^+=e^+ or μ^+, using a sample of 471±3 million BB events collected with the BABAR detector at the PEP-II e^+e^− collider at the SLAC National Accelerator Laboratory. We find no evidence for any of these modes and place 90% confidence level upper limits on their branching fractions in the range (1.5–26)×10_(−7).
Published: 2014

164. Measurement of the mass and width of the W boson in e+e− collisions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, N. Anjos, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, T.F. Bellunato, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, N. Besson, M.S. Bilenky, D. Bloch, H.M. Blom, L. Bol, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, P. Buschmann, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, J. Croix, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, S. Haug, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, O. Hertz, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, M. Kucharczyk, J. Kurowska, J.W. Lamsa, J.-P. Laugier, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, K. Moenig, M.R. Monge, J. Montenegro, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, L. Peralta, V. Perepelitsa, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, L. Salmi, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, C. Schwanda, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, Y. Sedykh, A.M. Segar, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 7. Clean energy, 01 natural sciences, Beam energy
Abstract: A measurement of the W mass and width has been performed by the DELPHI collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb^{-1} and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- -> lvqq and W+W- -> qqqq channels. The W mass result for the 1998 data set is M_W = 80.387 +/- 0.087 (stat) +/- 0.034 (syst) +/- 0.017 (LEP) +/- 0.035 (FSI) GeV/c2, where FSI represents the uncertainty due to final state interaction effects in the qqqq channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator. Combining this result with those previously published by the DELPHI collaboration gives the result M_W = 80.359 +/- 0.074 (stat) +/- 0.032 (syst) +/- 0.017 (LEP) +/- 0.033 (FSI) GeV/c2. The combined value for the W width is \Gamma_W = 2.266 +/- 0.176 (stat) +/- 0.056 (syst) +/- 0.052 (FSI) GeV/c2.
Published: 2001

165. Measurement of V from the decay process →Dℓ

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Analytical chemistry, Form factor (quantum field theory), 01 natural sciences, Pion, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit)
Abstract: A new precise measurement of |V_{cb}| and of the branching ratio BR(\bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell}) has been performed using a sample of about 5000 semileptonic decays \bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell}, selected by the DELPHI detector at LEP I by tagging the soft pion from D^{*+} -> D^0 \pi^+. The results are: V_{cb}=(39.0 +/- 1.5 (stat.) ^{+2.5}_{-2.6} (syst. exp.) +/- 1.3 (syst. th.)) x 10^{-3} BR(\bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell})=(4.70 +/- 0.13 (stat.) ^{+0.36}_{-0.31} (syst. exp.))% The analytic dependences of the differential cross-section and of the Isgur Wise form factor as functions of the variable w = v_{B^0}.v_{D^*} have also been obtained by unfolding the experimental resolution.
Published: 2001

166. Measurement ofCP-Violating Asymmetries inB0Decays toCPEigenstates

Author: J. Chauveau, J. E. Rasson, J. Nielsen, R. R. Kofler, D. E. Wagoner, A. Kurup, D. McShurley, B. Claxton, Gabriele Simi, R. Contri, P. L. Reinertsen, C. L. Davis, J. D. McFall, T. J. Harrison, R. Prepost, M. Haire, J. Va'vra, Richard Mount, J.L. Hewett, J.J. Reidy, P.F. Jacques, J. Oyang, I. Kitayama, Matteo Rama, P. F. Kunz, J. Lidbury, C. D. Buchanan, M. S. Dubrovin, Helen R. Quinn, J. Hanson, A. Hasan, A. Soha, P. G. Bright-Thomas, V. B. Golubev, R. Reif, R. Aleksan, J.F. Kral, S. Petrak, M. Krishnamurthy, J. M. LoSecco, J.E. Swain, L. Sapozhnikov, A. Olivas, Bernard Aubert, A. Gaidot, D. J. Payne, E. A. Kravchenko, U. Nauenberg, G. P. Gopal, A. Samuel, M. Doser, H. Lebbolo, Tiehui Liu, G. Vaitsas, B. Dahmes, G. Manzin, R. J. Sloane, D. Breton, James H Cochran, Marcel Kunze, S. F. Dow, M. Benayoun, A. Anjomshoaa, S. Dardin, S. Patton, N. B. Sinev, G. De Nardo, S. Luitz, A. R. Clark, G. Mancinelli, G. Calderini, C. Hast, R. Baldini-Ferroli, K. T. McDonald, Pierluigi Paolucci, D. Kirkby, G. Vasseur, F. Galeazzi, Roland Martin, K. Marks, Y. S. Zhu, T.M.B. Kordich, S. Devmal, D. Judd, J. M. Bauer, S. McMahon, Zongfu Yu, D. Bernard, Y. Karyotakis, F. Di Lodovico, M. Turri, C. De La Vaissiere, C. Dallapiccola, O. H. Saxton, E. Maly, Roland Bernet, C. T. Boeheim, G. Haller, L.S. Rochester, J. L. Harton, S. W. K. Emery, W. Orejudos, G. Lynch, P. David, J. M. Roney, Mossadek Talby, Wolfgang Walkowiak, H. L. Lynch, M. Turcotte, A. W. Weidemann, R. G. Jacobsen, Douglas Wright, S. F. Ganzhur, H. R. Band, R. E. Schmitz, P. Bailly, A. Höcker, E.N. Spencer, Luca Lista, J. R. Fry, G. W. London, N. R. Barlow, R. Coombes, P. McGrath, C. Renard, S. Fahey, F. Gaede, J. G. Smith, C. P. Jessop, S. Dû, J. Zhang, K. T. Flood, G. Rizzo, A. Zallo, G.L. Godfrey, O. Hamon, V. Eschenberg, D. Nelson, D. R. Quarrie, S. Prell, F. Colecchia, Sven Menke, S. D. Ecklund, F. Bulos, V. Speziali, A. K. McKemey, V. G. Shelkov, W. Burgess, W. S. Lockman, A. A. Salnikov, M. Dickopp, J. A. Nash, M. Lo Vetere, L. A. Klaisner, C. M. Hawkes, X. Shi, C. le Clerc, S. A. Lewis, A. Valassi, Yuehong Xie, V. Miftakov, P.A. Fischer, D. M. Strom, G. Michelon, H. W. Shorthouse, J. Ohnemus, S.M. Jayatilleke, V. Zacek, T. Schietinger, T. Weber, R.J. Plano, A. Mokhtarani, A. Santroni, P. Poropat, J. Pavlovich, Amir Farbin, Justin Albert, Y. I. Skovpen, R. Messner, C. H. Cheng, A. Kirk, J. Schwiening, S. S. Hertzbach, Y. Groysman, A. Hanushevsky, D.H. Coward, B. Byers, D. Su, Mathieu Langer, A. J.S. Smith, G. Rong, C.S. Lin, S. Jayatilleke, H. A. Tanaka, M. R. Convery, D. Warner, H. von der Lippe, A. N. Yushkov, M. Kalelkar, R. Krause, G. S. Abrams, M. Folegani, S. Sen, Philip James Clark, M. Iwasaki, L. Turnbull, Marcello Rotondo, R. J. Wilson, Owen Rosser Long, F. Bronzini, A. Seiden, X. C. Lou, J. J. Walsh, A. Tumanov, M. L. Kocian, L. Cottrell, C. Lionberger, S. Galagedera, Ralph Müller-Pfefferkorn, J. MacDonald, I.J. Scott, P. Besson, D. Newman-Coburn, M. Nyman, J. Lamsa, D. A. Roberts, F.C. Pastore, F. E. Taylor, P. Taras, P. Dixon, D. Gamba, S. Trincaz-Duvoid, Michael Sokoloff, T. Handler, N. K. Watson, Alexander Grillo, P. Eckstein, T. Colberg, John Back, D. R. Freytag, R. Seitz, Stephane T'Jampens, V. le Peltier, J. H. von Wimmersperg-Toeller, Jamie Boyd, B. Camanzi, V. E. Blinov, A. Frey, A. W. Borgland, G. Batignani, G. Grosdidier, James S. Harris, G. Finocchiaro, G. R. Bonneaud, J. Dorfan, Amir Ahsan, D. N. Brown, A.K. Michael, L. M. Cremaldi, J. Roy, R. de Sangro, S. L. Wu, T. R. McMahon, C. Angelini, S. Kyre, R. S. Dubitzky, A. Pompili, A. M. Boyarski, J. P. Lees, Vladimir Ivanchenko, U. Egede, Paola Grosso, Wouter Verkerke, F. Simonetto, G. Sciolla, M. George, R. H. Schindler, F. R. Goozen, D. S. Brown, U. Langenegger, J. Lory, M. Mandelkern, K. Ford, Craig R. Wuest, T. Fieguth, P. Bourgeois, M. Grothe, R. N. Cahn, S. Kluth, P. J. Oddone, Maria Roberta Monge, T. Dignan, John E. Bartelt, E.T. Simopoulos, H. Nicholson, B. Abbott, M. Beaulieu, W. H. Toki, A. Brooks, A. Jeremie, Mario Giorgi, I. De Bonis, Jane S. Tinslay, L. Del Buono, Claudio Campagnari, B. Lewandowski, J. E. Brau, Martino Margoni, H. Zobernig, K. Skarpass, J.L. Heck, E. Borsato, M. Piccolo, E. L. Hart, E. Chen, Q. H. Guo, B. Stugu, G. De Domenico, S. Versille, H. Staengle, W. W. Craddock, N. De Groot, D. B. MacFarlane, F. Brochard, Ph Leruste, S. Morganti, Sridhara Dasu, Bruce Schumm, J. A. McKenna, M. Serra, H. Kawahara, S. Jolly, D. G. Hitlin, Robert Henderson, P. Rankin, J.T. Seeman, J. N. Albert, D. E. Dorfan, S. Chun, W. Pope, Joseph Izen, S. W. O'Neale, M. Momayezi, N. A. Roe, D. Zanin, Mauro Morandin, M. Carpinelli, Lydia Roos, B. Mayer, A. de Silva, A. J.R. Weinstein, L. Keller, R. Kroeger, C. Gatto, Krisztian Peters, A. Mass, E. Paoloni, F. Forti, P.B. Vidal, J. Stelzer, A. Lu, Elliott D. Bloom, Scott D. Metzler, Marco Pallavicini, U. Wienands, P.L. Anthony, L. Behr, T.J. Pavel, Francesco Lanni, J. Button-Shafer, W. Kroeger, P. Strother, J.M. Gaillard, D. Boutigny, M. Morganti, C. Bula, Johann Cohen-Tanugi, F. Muheim, J.C. Andress, P.F. Manfredi, A. T. Watson, R. C. Jared, S. Yang, W. A. Wenzel, D. W. G. S. Leith, Francesco Fabozzi, S. Bettarini, W. N. Cottingham, S. Metcalfe, Dc Williams, T. Benninger, W. T. Ford, R. J. Thompson, D.L. Wagner, Tim Adye, K. Fratini, Valerio Re, M. M. Macri, Rana R. McKay, Andrei Gritsan, R. Frey, B. T. Meadows, M. H. Kelsey, A. B. Breon, W. M. Bugg, Alberto Lusiani, E. Roussot, H. F.W. Sadrozinski, Nicola Neri, J. Trischuk, T. Schalk, George Lafferty, C. Hearty, F. Ferrarotto, A. A. Korol, G. Vasileiadis, G. Triggiani, G. Raven, E. Charles, P. Kim, S. L. Levy, N. Kuznetsova, A. M. Eisner, Tom Elioff, C. M. Brown, D. J. Summers, P. F. Harrison, M. Bondioli, P. R. Burchat, N. Savvas, A. Buccheri, J. Brose, M. A. Mazzoni, G. Wormser, A. Calcaterra, R. K. Yamamoto, Wahid Bhimji, K. Baird, G. Zioulas, J. R. Johnson, Emilio Leonardi, A. V. Telnov, C. Bozzi, Fergus Wilson, I. Kipnis, J. F. Genat, R. Stone, B. Pedrotti, J.R.G. Alsmiller, J. Y. Nief, G. Putallaz, K. Truong, C. E. Marker, Jacek Becla, C. Roat, H. Singh, J. Stark, D. Oshatz, F. Anulli, A. Perazzo, M. Milek, C. Voena, A. Roodman, F. Martinez-Vidal, S. Willocq, D. P. Stoker, Dominik Müller, Willem G. J. Langeveld, B. Serfass, S. Dittongo, Filippo Bosi, T. I. Meyer, T. Pulliam, S. H. Robertson, I. M. Peruzzi, Roland Waldi, F. G. O'Neill, G. Della Ricca, Patrick Robbe, D. Thiessen, L. Wilden, F. Ferroni, G. Hamel de Monchenault, V.V. Serbo, R. S. Panvini, D. Falciai, P.A. Hart, J. J. Russell, E.D. Frank, W. Dunwoodie, A. Jawahery, R. Bard, Y. B. Pan, R. Kowalewski, Q. Fan, Ingrid U. Scott, M. Booke, S. I. Serednyakov, F. Bianchi, David Wallom, R. Fernholz, Bruce E. Sands, M. Verderi, Darren Price, D. A. Bowerman, R. Bartoldus, M.L. Aspinwall, A. Buzzo, R. J. Barlow, I. Gaponenko, P. Sanders, M. Pripstein, P. M. Patel, M. V. Purohit, A. B. Meyer, Stefan M Spanier, V. I. Telnov, F. X. Yumiceva, G. Crosetti, Stephen Robert Wagner, J.H. Panetta, Pu Wang, James L. White, Yg Kolomensky, C. Beigbeder, K. R. Schubert, F. Gastaldi, L. Gladney, R.J.L. Potter, R. Faccini, K. van Bibber, Lodovico Ratti, V. Brigljević, J. A. Kadyk, A. J. Lankford, Enrico Robutti, M. Marino, K. Paick, U. Mallik, M. Reep, F. Le Diberder, S. M. Xella, C. Cartaro, Marcella Bona, J. D. Richman, B. Franek, N. Chevalier, M. Posocco, C. Peters, M. Benkebil, L. T. Kerth, J.H. Weatherall, D.P. Coupal, B. Foster, G. A. Cowan, C. Thiebaux, F. Palombo, Vivek Sharma, J. Fullwood, G. M. Kolachev, G. Blaylock, Michael C. Carroll, G. Vuagnin, M. Nordby, M. Marzolla, A. Smol, Michael S. Witherell, P. E. Raines, W. Kozanecki, T.L. Geld, M. T. Ronan, R. Lafever, A. Romosan, L. Gosset, A. P. Onuchin, G. P. Dubois-Felsmann, G.P. Chen, S. K. Louie, P. D. Dauncey, Peter Elmer, C. Patrignani, A. R. Buzykaev, I. Eschrich, V. Tisserand, M. Long, N. Copty, H. Schmuecker, M. S. Gill, J. L. Wittlin, B. Yamamoto, Luciano Bosisio, J. P. Martin, D. J. Knowles, T. G. O'Connor, R. W. Kadel, L. Piemontese, R. Claus, A. Palano, T. B. Moore, E. Gabathuler, W. R. Innes, A. Soffer, F. C. Porter, J. Krug, I. Adam, H.J. Krebs, R. Cizeron, R. Cowan, M. Weaver, G. Cavoto, R. P. Johnson, J. R. Schieck, V. Lillard, T. Deppermann, Stephen Gowdy, Ren-Yuan Zhu, H. B. Crawley, David J. Smith, C. A. Heusch, J. Perl, H. Marsiske, S. Bagnasco, Yang Li, Ezio Torassa, A. M. Lutz, W. J. Wisniewski, D. Del Re, S. J. Yellin, M. I. Williams, S. Passaggio, C. Voci, E. Lamanna, Crisostomo Sciacca, D. Aston, F. Jackson, Michael Levi, B. Brau, C. Touramanis, H. O. Cohn, D.E. Azzopardi, F. Dal Corso, G. Dahlinger, T. S. Mattison, D. A. Sanders, D.A. Bukin, D. J. Lange, G. Piredda, A. Dvoretskii, J. C. Chen, M. E. Huffer, L. Martin, M. Morii, Sh. Rahatlou, Maria Grazia Pia, S. Playfer, C. P. O'Grady, Akram Khan, R. Gamet, B. Di Girolamo, N. Dyce, T. J. Wenaus, E. I. Rosenberg, C. T. Day, T. Glanzman, Mg Green, Daniel Johnson, J. Olsen, M. Zisman, P. Patteri, O. Fackler, M. McCulloch, R. Bell, G. Oxoby, M. K. Sullivan, E. Treadwell, B. Zhang, Simon George, N. J.W. Gunawardane, Herbert Koch, R. C. Field, F. Salvatore, K.C. Moffeit, P. Matricon, V. Luth, S.C. Berridge, F. Sandrelli, R. M. Bionta, H. de Staebler, A. Snyder, C. Lu, T. A. Gabriel, H. Futterschneider, G. Fouque, T. Himel, R. Boyce, S. Otto, E. W. Varnes, Achim Stahl, John Allison, S. Ferrag, S. Burke, B. Spaan, H. Briand, A. D. Bukin, N. Cavallo, L. Lanceri, Stéphane Plaszczynski, J. Beringer, C. Bulfon, S. F. Schaffner, B. N. Ratcliff, N. D. Qi, R. Schwierz, M. Mugge, M. Zito, D. Fujino, Dave Britton, C. C. Young, W. T. Meyer, J. Blouw, Davide Piccolo, H. Hu, A. Karcher, M. Kay, P. C. Bloom, R. Hamilton, M. Falbo, Harold S. Park, P. Mora de Freitas, C. Yeche, M. H. Schune, T. Brandt, R. Stroili, H. A. Neal, A. Ryd, W. C. van Hoek, M. Steinke, N. I. Geddes, C.S. Sutton, G. Eigen, F. Safai Tehrani, Daniel E. Hale, and Kazuo Abe
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, General Physics and Astronomy, 01 natural sciences, Asymmetry, Standard Model, B-factory, Nuclear physics, Particle decay, Amplitude, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, media_common
Abstract: We present measurements of time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates. The measurement uses a data sample of 23x10(6) Upsilon(4S)-->BbarB decays collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we find events in which one neutral B meson is fully reconstructed in a CP eigenstate containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2beta, is derived from the decay time distributions in such events. The result is sin2beta = 0.34+/-0.20 (stat)+/-0.05 (syst).
Published: 2001

167. Search for spontaneous R-parity violation at GeV and 189 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, N. Anjos, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, N. Besson, M.S. Bilenky, D. Bloch, H.M. Blom, L. Bol, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, E. Brodet, P. Bruckman, J.-M. Brunet, L. Bugge, P. Buschmann, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, J. Croix, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, K. Hamilton, J. Hansen, F.J. Harris, S. Haug, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, O. Hertz, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, M. Kucharczyk, J. Kurowska, J.W. Lamsa, J.-P. Laugier, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, K. Moenig, M.R. Monge, J. Montenegro, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, L. Peralta, V. Perepelitsa, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, L. Salmi, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, C. Schwanda, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, Y. Sedykh, A.M. Segar, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parameter space, 01 natural sciences, Chargino, R-parity, 0103 physical sciences, High Energy Physics::Experiment, Limit (mathematics), Nuclear Experiment, 010306 general physics, Lepton
Abstract: Searches for spontaneous R-parity violating signals at sqrt(s) = 183 GeV and sqrt(s) = 189 GeV have been performed using the 1997 and 1998 DELPHI data, under the assumption of R-parity breaking in the third lepton family. The expected topology for the decay of a pair of charginos into two acoplanar taus plus missing energy was investigated and no evidence for a signal was found. The results were used to derive a limit on the chargino mass and to constrain the allowed domains of the MSSM parameter space.
Published: 2001

168. Search for R-parity violation with a coupling at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Coupling (probability), 01 natural sciences, 7. Clean energy, Standard Model, Chargino, Pair production, R-parity, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Lepton
Abstract: Searches for pair production of gauginos and squarks in e+e- collisions at a centre-of-mass energy of 189 GeV have been performed on data corresponding to an integrated luminosity of 158 pb^{-1} collected by the DELPHI detector at LEP. The data were analyzed under the assumption of non-conservation of R-parity through a single dominant Ubar Dbar Dbar coupling between squarks and quarks. Typical final states contain between 4 and 10 jets with or without additional leptons. No excess of data above Standard Model expectations was observed. The results were used to constrain domains of the MSSM parameter space and derive limits on the masses of supersymmetric particles. The following mass limits at 95% CL were obtained from these searches: neutralino mass: m_{\tilde{\chi^0_{1}}} \geq 32 GeV chargino mass: m_{\tilde{\chi^+_{1}}} \geq 94 GeV stop and sbottom mass (indirect decay) with \Delta M > 5 GeV: m_{\tilde{t_1}} \geq 74 GeV, for \Phi_{mix}=0 rad m_{\tilde{t_1}} \geq 59 GeV, for \Phi_{mix}=0.98 rad m_{\tilde{b_1}} \geq 72 GeV, for \Phi_{mix}=0 rad. The angle \phi_{mix} is the mixing angle between left and right handed quarks.
Published: 2001

169. Proposal of a sparsification circuit for mixed-mode MAPS detectors

Author: GABRIELLI, ALESSANDRO, SEMPRINI CESARI, NICOLA, SPIGHI, ROBERTO, VILLA, MAURO, ZOCCOLI, ANTONIO, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell’Orso, F. Forti, P. Giannetti, M. A. Giorgi, A. Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, L. Bosisio, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vitale, G. F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, B. Giacobbe, A. Gabrielli, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell’Orso, F. Forti, P. Giannetti, M.A. Giorgi, A.Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, L. Bosisio, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vitale, G.F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, B. Giacobbe, N. Semprini, R. Spighi, M. Villa, and A. Zoccoli
Subjects: Physics, Nuclear and High Energy Physics, CMOS sensor, Pixel, business.industry, Physics::Instrumentation and Detectors, Sparsification, Detector, Chip, READOUT, HEP, MAPS, Settore ING-INF/01 - Elettronica, Matrix (mathematics), CMOS, VHDL, business, Instrumentation, computer, Computer hardware, Block (data storage), computer.programming_language
Abstract: This paper shows the design of a new mixed-mode chip built up of a bidimensional matrix of Monolithic Active Pixel Sensor (MAPS), and of an off-pixel digital readout sparsiﬁcation circuit. The mixed-mode approach extends the performance of the chip as both the matrix and the readout logic have been developed separately. In particular, the matrix of MAPS has been described with a VHDL model and used as a macro-cell block within a bigger digital design that includes the readout logic. The global placeand-route has been also digitally carried out. The design was submitted via the STM 0.13 mmCMOS technology and readout logic is based on standard cells by implementing an optimized token-like technique. The proposed fast readout architecture should extend the ﬂexibility of the MAPS devices to be also used in ﬁrst level triggers on tracks in vertex detectors. The design, which has been developed within the SLIM5 Collaboration, is aimed at overcoming the readout speed limit of future large-matrix pixel detectors for particle tracking, by matching the requirements of future high-energy physics experiments.
Published: 2008

170. The Associative Memory for the Self-Triggered SLIM5 Silicon Telescope

Author: G. Batignani, S. Bettarini, G. Calderini, R. Cenci, A. Cervelli, F. Crescioli, M. Dell’Orso, F. Forti, P. Giannetti, M. A. Giorgi, A. Lusiani, S. Gregucci, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, M. Piendibene, G. Rizzo, L. Sartori, J. Walsh, E. Yurstev, C. Andreoli, L. Caioni, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, M. Bomben, L. Bosisio, P. Cristaudo, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vitale, G. F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, B. Giacobbe, F. Giorgi, G. Pellegrini, DI SIPIO, RICCARDO, GABRIELLI, ALESSANDRO, SBARRA, CARLA, SEMPRINI CESARI, NICOLA, SPIGHI, ROBERTO, VALENTINETTI, SARA, VILLA, MAURO, ZOCCOLI, ANTONIO, PAUL SELLIN, G. Batignani, S. Bettarini, G. Calderini, R. Cenci, A. Cervelli, F. Crescioli, M. Dell’Orso, F. Forti, P. Giannetti, M. A. Giorgi, A. Lusiani, S. Gregucci, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, M. Piendibene, G. Rizzo, L. Sartori, J. Walsh, E. Yurstev, C. Andreoli, L. Caioni, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. Re, G. Traversi, M. Bomben, L. Bosisio, P. Cristaudo, G. Giacomini, L. Lanceri, I. Rachevskaia, L. Vitale, G. F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, R. Di Sipio, B. Giacobbe, A. Gabrielli, F. Giorgi, G. Pellegrini, C. Sbarra, N. Semprini, R. Spighi, S. Valentinetti, M. Villa, and A. Zoccoli
Subjects: BEAM TEST, ASSOCIATIVE MEMORY, PIXELS
Abstract: Modern experiments search for extremely rare processes hidden in much larger background levels. As the experiment complexity, the accelerator backgrounds and luminosity increase we need increasingly exclusive selections to efficiently select the rare events inside the huge background. We present a fast, high-quality, trackbased event selection for the self-triggered SLIM5 silicon telescope. This is an R&D experiment whose innovative trigger will show that high rejection factors and manageable trigger rates can be achieved using finegranularity, low-material tracking detectors. This strategy requires massive computing power to minimize the online execution time of complex tracking algorithms. Affordable latency and rates are provided by a dedicated device, the Associative Memory (AM). The time consuming pattern recognition problem, generally referred to as the “combinatorial challenge”, is beat by the AM exploiting parallelism to the maximum level: it compares the event to precalculated “expectations” (pattern matching) at once. This approach reduces to linear the typical exponential complexity of the CPUbased algorithms. The problem is solved by the time data are loaded into the AM devices. We describe the AM-based trigger and its successful use in the SLIM5 test beam where a silicon detector telescope has been recently tested on the CERN SPS beam.
Published: 2008

171. Upper limit for the decay and measurement of the branching ratio

Author: D. Bertrand, Jiri Chudoba, N. Benekos, Patrick Jarry, G. Rinaudo, Z. Krumstein, E. Cortina, J. Salt, Rupert Leitner, M. Battaglia, G. Matthiae, E. Kriznic, Ch. Royon, P. Kubinec, O. Klapp, Clara Troncon, S. Paiano, A. De Min, D. Moraes, L. Bugge, R. Janik, S. Crepe, Juergen Thomas, N. I. Zimin, I. Ripp-Baudot, E. K. Johansson, Borge Svane Nielsen, A. Maio, F. Carena, G. Sajot, U. Flagmeyer, N. Tinti, Krzysztof Doroba, Chiara Meroni, A. Tonazzo, H. Palka, W. Da Silva, W. A. Mitaroff, V. Malychev, S. Cabrera, V. Ruhlmann-Kleider, H. Foeth, Ph. Charpentier, A. G. Frodesen, M. S. Bilenky, J. W. Lamsa, C. Gaspar, Ugo Amaldi, M. Bonesini, Natale Demaria, U. Mueller, M. A. Bizouard, A. Passeri, L.J. Carroll, K. Muenich, Louis Lyons, Fabio Cossutti, F. J. Harris, F. Terranova, F. Richard, B. De Lotto, G. Crosetti, Evgueni Vlasov, P. Chochula, P. Negri, G. C. Zucchelli, Oxana Smirnova, Jelena Krstic, I. Gonzalez Caballero, W. De Boer, E. Zevgolatakos, A. W. Borgland, H. M. Blom, Y. Sacquin, Kathy Huet, P. Jonsson, Valeriy Pozdniakov, R. Alemany, P. Bruckman, F. Barao, Anna Lipniacka, E. I. Rosenberg, W. Van Doninck, A. De Angelis, K. Karafasoulis, Igor Boyko, T. Lesiak, S. Almehed, S. Fichet, M. Tobin, P. B. Renton, A. C. Taffard, P. Collins, S. Tzamarias, E. Higon, Giovanni Valenti, R. Chierici, F. Hahn, C. Matteuzzi, M. Nassiakou, O.M. Kouznetsov, V. Lepeltier, M. Pernicka, J. Fayot, Jesus Marco, G. Lenzen, R. Strub, F. Martinez-Vidal, G. Borisov, V. Kostioukhine, M. Siebel, Paolo Checchia, S. Gamblin, B. Schwering, B. Marechal, Richard Brenner, M. L. Turluer, F. Simonetto, D. Reid, E. C. Katsoufis, E. Boudinov, F. Scuri, Rosy Nicolaidou, G. Orazi, G. A. Chelkov, Ph. Gavillet, J-C. Marin, Daniel Bloch, J. E. Augustin, D. Wicke, A. Kinvig, G. Leder, E. Ferrer-Ribas, J. D. Durand, A. G. Olshevski, U. Schwickerath, Ahmimed Ouraou, Marta Calvi, R. Paiva, M. Gaspar, Vincenzo Canale, Geoffrey Smith, Klaus Hamacher, N. Neufeld, G. Mc Pherson, H. Herr, L. G. Tkatchev, P. V. Chliapnikov, B. Åsman, S. Haider, M. Feindt, S. Sánchez Navas, W. Liebig, Tord Ekelof, T. Alderweireld, P. Verdier, P. Niezurawski, J. MacNaughton, Gianni Zumerle, V. Lefebure, R. Gokieli, A. Nygren, M. Berggren, A. N. Sisakian, A. Sadovsky, Gunter Wolf, Demetrios Loukas, L. Di Ciaccio, L. Ventura, G. Grosdidier, A. Malek, A. Sokolov, S. Todorova, D. Crennell, F. Mandl, C. Caso, S. Heising, Claire Bourdarios, V. Chorowicz, P. Poropat, G. Smadja, A. Pullia, R. Muresan, P. Andersson, Andre Augustinus, Flavio Fontanelli, Wolfgang Adam, Alessandra Romero, A. Ruiz, Piotr Zalewski, Sofia Andringa, P. Tyapkin, S. Hoorelbeke, B. Loerstad, Paolo Morettini, Dimos Sampsonidis, J. Drees, Göran Jarlskog, Phillip Allport, K. Cieslik, C. Joram, Paolo Ronchese, Maria Roberta Monge, Christine Kourkoumelis, M. Baubillier, Achille Stocchi, J. M. Heuser, T. Podobnik, H. B. Crawley, G. Della Ricca, N. Pukhaeva, Ugo Gasparini, Yu. Belokopytov, N. J. Kjaer, Christian Weiser, A. Onofre, J. G. Loken, D. Fassouliotis, Andrea Perrotta, T. Tabarelli, B. Tome, P. Rebecchi, Th. D. Papadopoulou, Ch. Jarlskog, A. Zalewska, F. Glege, Jørgen Beck Hansen, Alexander Vodopyanov, G. Morton, E. G. Anassontzis, V.A. Uvarov, M. Mazzucato, P. Beilliere, Ph. Schwemling, O. Yushchenko, Evangelos Gazis, W. D. Apel, J. P. Engel, S. Stanic, M. V. Castillo Gimenez, H. Rahmani, I. Lippi, F. Pierre, Ariella Cattai, W. T. Meyer, Guillelmo Gomez-Ceballos, R. Sekulin, Manfred Krammer, R. Barbier, J. H. Wickens, V. Verzi, M. Bracko, B. Muryn, Marco Paganoni, V. Nomokonov, Oliver Passon, P. Goncalves, J. Van Eldik, F. Fulda-Quenzer, F. Ledroit, J. Fuster, G. Vegni, I. Bozovic, M. Stanitzki, Alessandro Petrolini, Dietrich Liko, P. Privitera, O. Ullaland, Gareth J. Barker, A. Miagkov, G. Tristram, B.P. Kersevan, Vincent Hedberg, Daniel Jeans, V. Gracco, E. Graziani, V. Obraztsov, M. Dracos, D. W. Lane, M. Davenport, C. Haag, N. Van Remortel, J. M. Brunet, T. Moa, L.N. Gerdyukov, Krzysztof Nawrocki, W. Van den Boeck, J. N. Jackson, Chariclia Petridou, Christopher Parkes, A. J. Washbrook, J. Cuevas Maestro, F. Tegenfeldt, R. Lauhakangas, R. Mc Nulty, L. Vitale, Guido Barbiellini, J. Rames, R. Sosnowski, F. Naraghi, P. Rosinsky, Klaus Moenig, Fabrizio Parodi, Cristian Stanescu, P. Branchini, Antonios Leisos, D. Radojicic, P. Kokkinias, I. van Vulpen, Matteo Pegoraro, G. Ekspong, B. Jean-Marie, M. A. Houlden, S. Marti i Garcia, P. Gris, Georgios Fanourakis, T. Buran, Markus Elsing, B. Franek, Amiran Tomaradze, R. Moeller, Daniel Treille, M. Bigi, P. Abreu, P. Van Dam, X. Moreau, Laurent Mirabito, D. Gele, J. Guy, Attilio Andreazza, K. Stevenson, I. A. Tyapkin, P. Lutz, J. Ridky, P. N. Ratoff, A. Markou, A. Galloni, Corinne Berat, L. K. Resvanis, J. H. Lopes, U. Parzefall, A. Firestone, S. O. Holmgren, Nikita Smirnov, Tiziano Rovelli, Olga Botner, G. Transtromer, A. Kiiskinen, I. V. Ajinenko, L. S. Vertogradov, Tim Adye, C. Bosio, Sandra Amato, M. Nikolenko, B. Buschbeck, B. Golob, Mattias Ellert, Carmen García, Reynald Pain, Massimo Caccia, S. Squarcia, A. Behrmann, H. Saarikko, Tiziano Camporesi, G. Cosme, S. Maltezos, Luca Tortora, T. Myklebust, P. Herquet, L. Simard, M. Begalli, P. J. Holt, Vaclav Vrba, R. Contri, N. G. Redaelli, Hans Dijkstra, Marco Bozzo, Pawel Jalocha, Barry King, Marc Winter, C. Mulet-Marquis, T. J. V. Bowcock, Petar Adzic, P. Juillot, L. Leinonen, E. Spiriti, Jiri Masik, R. Lopez-Fernandez, Ph. Zoller, M. Huber, C. Walck, Nikolaos P. Mastroyiannopoulos, G. D. Alekseev, R. Reinhardt, Nicola Amapane, T. L. Hessing, R. Frühwirth, N. Seibert, J. Timmermans, Luc Pape, Josef Strauss, J. Kurowska, R. C. Shellard, Josef Hrubec, V. Chabaud, G. J. Hughes, M. Espirito Santo, W. Venus, Chiara Mariotti, J. J. Hernandez, D. Zavrtanik, P. Delpierre, S. Hahn, R. Orava, G. Myatt, Manolis Dris, T. G M Malmgren, Mario Sannino, H. Wahlen, Francesca Romana Cavallo, I. Gil, Y. Arnoud, M. Moch, P. Roudeau, T. Geralis, V. V. Lapin, K. Grzelak, C. De Clercq, A. M. Segar, G. Eigen, W. J. Murray, M. Mc Cubbin, Z. Albrecht, Allan Hallgren, B. Bouquet, Antonio Baroncelli, Alberto Benvenuti, Fabrizio Ferro, Rafael Marco, J. Dolbeau, P. Bambade, P.S.L. Booth, L. Jungermann, K. H. Becks, E. Vallazza, J. Palacios, Arnaud Duperrin, D. Vilanova, P. Buschmann, R. Mc Kay, Stefano Ragazzi, E. Piotto, J. Grahl, Morgan Lethuillier, Maria Elena Pol, S. Katsanevas, A. Sopczak, D. Y. Bardin, R. Keranen, Francisco Matorras, C. Martinez-Rivero, A. Ferrer, Yu. Sedykh, Martijn Mulders, P. Antilogus, J. Rehn, Martino Margoni, E. Fokitis, Peter Kluit, F. Mazzucato, J. Libby, Ole Røhne, M. Pimenta, B. A. Khomenko, Francesco Navarria, Pablo Tortosa, A. Zintchenko, K. Hultqvist, L. Gorn, U. Mjoernmark, H. T. Phillips, P. Seager, N. Ghodbane, N. N. Khovanski, J. P. Laugier, M. Verlato, R. Jacobsson, J. Yi, A. Van Lysebetten, Sandor Czellar, G. Polok, Yu. Gouz, Ernesto Migliore, G. Kernel, T. Allmendinger, G. Wilkinson, J. M. Lopez, K. Kurvinen, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, Luis Peralta, F. Kapusta, Marek Szczekowski, H. Klein, K. Osterberg, T. Pavel, J.R. Mahon, G. Gopal, Maarten Boonekamp, L. De Paula, M. Trochimczuk, T. Spassov, D. Gamba, M. Witek, G. Voulgaris, F. Verbeure, B. Stugu, and M. Gandelman
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Computer Science::Digital Libraries, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, Computer Science::Mathematical Software, Higgs boson, High Energy Physics::Experiment, B meson, 010306 general physics, Lepton
Abstract: The branching ratio for the leptonic decay of charged B mesons View the MathML source has been measured using selected leptonic View the MathML source and hadronic τ−→ντX decays in View the MathML source decays recorded by DELPHI at LEP1 in 1992–1995. The result, View the MathML source at the 90% confidence level, is consistent with standard model expectations and puts a constraint on the ratio tanβ/MH±
Published: 2000

172. Determination of the e+e−→γγ(γ) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, W. Kucewicz, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, A. Oblakowska Mucha, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Graviton, Lambda, 01 natural sciences, Upper and lower bounds, Gamma gamma, Cross section (geometry), Excited state, 0103 physical sciences, High Energy Physics::Experiment, Mass scale, 010306 general physics
Abstract: A test of the QED process e+e- -> gamma gamma (gamma) is reported. The data analysed were collected with the DELPHI detector in 1998 and 1999 at the highest energies achieved at LEP, reaching 202 GeV in the centre-of-mass. The total integrated luminosity amounts to 375.7 pb^{-1}. The differential and total cross-sections for the process e+e- -> gamma gamma were measured, and found to be in agreement with the QED prediction. 95% Confidence Level (C.L.) lower limits on the QED cut-off parameters of Lambda+ > 330 GeV and Lambda- > 320 GeV were derived. A 95% C.L. lower bound on the mass of an excited electron of 311 GeV/c^2 (for lambda_gamma = 1) was obtained. s-channel virtual graviton exchange was searched for, resulting in 95% C.L. lower limits on the string mass scale, M_S: M_S > 713 GeV/c^2 (lambda = 1) and M_S > 691 GeV/c^2 (lambda = -1).
Published: 2000

173. Rapidity-rank structure of pairs in hadronic Z0 decays

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Structure (category theory), Rank (differential topology), 01 natural sciences, Baryon, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics
Abstract: The rapidity-rank structure of p pbar pairs is used to analyze the mechanism of baryon production in hadronic Z0 decay. The relative occurrence of the rapidity-ordered configuration p M pbar, where M is a meson, and that of p pbar adjacent pairs is compared. The data are found to be consistent with predictions from a mechanism producing adjacent-rank p pbar pairs, without requiring `string-ordered' p M pbar configurations. An upper limit of 15% at 90% confidence is determined for the p M pbar contribution.
Published: 2000

174. Limits on the masses of supersymmetric particles at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Selectron tube, Particle physics, Chargino, 010308 nuclear & particles physics, 0103 physical sciences, Neutralino, 010306 general physics, 01 natural sciences, Lightest Supersymmetric Particle
Abstract: Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R-parity conservation has been assumed. The lightest neutralino was found to be heavier than 32.3 GeV/c^2 independent of the m_0 value. The lightest chargino, the second-to-lightest neutralino, the next-to-heaviest neutralino, the heaviest neutralino, the sneutrino and the right-handed selectron were found to be heavier than 62.4 GeV/c^2, 62.4 GeV/c^2, 99.9 GeV/c^2, 116.0 GeV/c^2, 61.0 GeV/c^2, and 87.0 GeV/c^2, respectively. These limits do not depend on m_0 or M_2 and are valid for 1 \leq tan(beta) \leq 40, in the mu region where the lightest neutralino is the LSP. If the sneutrino is heavier than the chargino the lightest neutralino has to be heavier than 32.4 GeV/c^2. The effects of mixings in the third family of sfermions on these limits are discussed. The confidence level of all limits given is 95%.
Published: 2000

175. Search for SUSY with R-parity violating couplings at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Scalar (mathematics), Supersymmetry, Lambda, 01 natural sciences, Standard Model, Pair production, R-parity, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Lepton
Abstract: Searches for pair production of supersymmetric particles under the assumption that R-parity is not conserved are presented, based on data recorded by the DELPHI detector in 1998 from e+e- collisions at a centre-of-mass energy of 189 GeV. Only one R-parity violating LL\bar{E} term (i.e. one lambda coupling), which couples scalar leptons to leptons, is considered to be dominant at a time. Moreover, it is assumed that the strength of the R-parity violating couplings is such that the lifetimes can be neglected. The search for pair production of neutralinos, charginos and sleptons has been performed for both direct R-parity violating decays and indirect cascade decays. The results are in agreement with Standard Model expectations, and are used to update the constraints on the MSSM parameter values and the mass limits previously derived at sqrt(s) = 183 GeV. The present 95% C.L. limits on supersymmetric particle masses are: m_{\tilde{\chi}^0} > 30 GeV/c^2 and m_{\tilde{\chi}^\pm} > 94 GeV/c^2; m_{\tilde{\nu}} > 76.5 GeV/c^2 (direct and indirect decays); m_{\tilde{\ell}_R} > 83 GeV/c^2 (indirect decay only).
Published: 2000

176. Determination of |Vub|/|Vcb| with DELPHI at LEP

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, G. Zumerle, UCL - SST/IRMP - Institut de recherche en mathématique et physique, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Hadron, FOS: Physical sciences, 01 natural sciences, Partícules (Física nuclear), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Nuclear Experiment, 010306 general physics, DELPHI, Physics, Energy distribution, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Rest frame, LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract: The ratio of the CKM quark-mixing matrix elements |Vub|/|Vcb| has been measured using B hadron semileptonic decays. The analysis uses the reconstructed mass M_X of the secondary hadronic system produced in association with an identified lepton. Since B -> X_u lepton anti-nu transitions are characterised by hadronic masses below those of the D mesons produced in B -> X_c lepton anti-nu transitions, events with a reconstructed value of M_X significantly below the D mass are selected. Further signal enrichments are obtained using the topology of reconstructed decays and hadron identification. A fit to the numbers of decays in the b -> u enriched and depleted samples with M_X above and below 1.6 GeV/c^2 and to the shapes of the lepton energy distribution in the B rest frame gives |Vub|/|Vcb|= 0.103^{+0.011}_{-0.012} (stat.) +/- 0.016 (syst.) +/- 0.010 (model) and, correspondingly, a charmless semileptonic B decay branching fraction of BR(B -> X_u lepton anti-nu) = (1.57 +/- 0.35 (stat.) +/- 0.48 (syst.) +/- 0.27 (model)) x 10^{-3}., 24 pages, 8 figures
Published: 2000

177. Search for heavy stable and long-lived particles in e+e− collisions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Time projection chamber, 010308 nuclear & particles physics, Detector, 01 natural sciences, Ring-imaging Cherenkov detector, Charged particle, Ionization, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Cherenkov radiation
Abstract: A search for stable and long-lived heavy charged particles was performed using the data taken by the DELPHI experiment at an energy of 189 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detector and the ionisation loss measured in the Time Projection Chamber were used to identify heavy particles passing through the detector. No evidence for the production of such particles has been found, therefore exclusion limits at 95% confidence level were derived on the masses of left and right handed smuons and staus. The results were combined with previous DELPHI searches in this channel. Including previous DELPHI results, masses of left (right) handed stable smuons and staus can be excluded between 2 GeV/c^2 and 88 (87.5) GeV/c^2 at 95% CL.
Published: 2000

178. Search for charginos in e+e− interactions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Chargino, 010308 nuclear & particles physics, 0103 physical sciences, Neutralino, Gravitino, 010306 general physics, 01 natural sciences, Resonance (particle physics), Energy (signal processing)
Abstract: An update of the searches for charginos and gravitinos is presented, based on a data sample corresponding to the 158 pb^{-1} recorded by the DELPHI detector in 1998, at a centre-of-mass energy of 189 GeV. No evidence for a signal was found. The lower mass limits are 4-5 GeV/c^2 higher than those obtained at a centre-of-mass energy of 183 GeV. The (\mu,M_2) MSSM domain excluded by combining the chargino searches with neutralino searches at the Z resonance implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 31.0 GeV/c^2 for tan(beta) \geq 1.
Published: 2000

179. Measurement of the branching fraction

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, 01 natural sciences, Crystallography, Pion, 0103 physical sciences, Pi, High Energy Physics::Experiment, B meson, Impact parameter, Neutrino, 010306 general physics, Lepton
Abstract: A study of b semileptonic decays into D, D pi+- and D* pi+- final states is presented. The D0, D+ and D*+ mesons are exclusively reconstructed in Z decay data recorded from 1992 to 1995 in the DELPHI experiment at LEP. The overall branching fractions are measured to be: BR(b -> D^0 \ell^- \bar{\nu}_{\ell} X) = (7.04 +/- 0.34 (stat) +/- 0.36 (syst.exp) +/- 0.17 (BR_D))% BR(b -> D^+ \ell^- \bar{\nu}_{\ell} X) = (2.72 +/- 0.19 (stat) +/- 0.16 (syst.exp) +/- 0.18 (BR_D))% BR(b -> D^{*+} \ell^- \bar{\nu}_{\ell} X) = (2.75 +/- 0.17 (stat) +/- 0.13 (syst.exp) +/- 0.09 (BR_D))% where the D0 and D+ results include also contributions from D*0 and D*+ decays. A fit to the distribution of the pi+- impact parameter to the primary interaction vertex provides a measurement of the b semileptonic branching fractions into the D0 pi+- X, D+ pi+- X and D*+ pi+- X final states. Assuming that single pion decay modes of B mesons dominate, the partial rates for \bar{B} -> D \pi \ell^- \bar{\nu_{\ell}} and \bar{B} -> D^{*} \pi \ell^- \bar{\nu_{\ell}} have been obtained, corresponding to a total branching fraction: BR(\bar{B} -> D \pi \ell^- \bar{\nu_{\ell}}) + BR(\bar{B} -> D^{*} \pi \ell^- \bar{\nu_{\ell}}) = (3.40 +/- 0.52 (stat) +/- 0.32 (syst))% . This result agrees well with the observed difference between the total B semileptonic branching fraction and the sum of the \bar{B} -> D \ell^- \bar{\nu_{\ell}} and D^* \ell^- \bar{\nu_{\ell}} branching fractions.
Published: 2000

180. Λb polarization in Z0 decays at LEP

Author: P. Privitera, Chariclia Petridou, W. Liebig, Marc Winter, Nikolaos P. Mastroyiannopoulos, Tord Ekelof, T. G M Malmgren, G. Wilkinson, H. Wahlen, J. M. Lopez, J. H. Lopes, U. Parzefall, A. Firestone, D. Fassouliotis, Daniel Treille, M. Bigi, J. Ridky, F. Pierre, B. Loerstad, Vincent Hedberg, D. W. Lane, A. N. Sisakian, E. Boudinov, G. Ekspong, K. Stevenson, P. N. Ratoff, Mattias Ellert, M. Begalli, M. A. Bizouard, N. Tinti, K. Muenich, T. Tabarelli, Louis Lyons, Giovanni Valenti, G. A. Chelkov, Demetrios Loukas, A. Sadovsky, K. H. Becks, E. Vallazza, Paolo Morettini, J. G. Loken, Piotr Zalewski, Z. Krumstein, S. Paiano, A. De Min, K. Kurvinen, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, C. Mulet-Marquis, P. Beilliere, H. Rahmani, Manfred Krammer, G. Sajot, U. Flagmeyer, J-C. Marin, Nikita Smirnov, M. Verlato, Krzysztof Nawrocki, Luca Tortora, T. Myklebust, P. Herquet, Oliver Passon, R. Contri, A. Miagkov, Ariella Cattai, J. Van Eldik, F. Ledroit, J. Fuster, M. Moch, O. Tchikilev, Anna Lipniacka, V.A. Uvarov, Natale Demaria, M. Tobin, Christian Weiser, A. Petrolini, B. De Lotto, G. Crosetti, Evgueni Vlasov, U. Mjoernmark, P. Van Dam, Nicola Amapane, R. Jacobsson, S. Todorova, Matteo Pegoraro, A. G. Frodesen, T. J. V. Bowcock, M. S. Bilenky, O. Ullaland, M. Feindt, S. Sánchez Navas, T. L. Hessing, P. Buschmann, R. Mc Kay, A. Andreazza, K. Grzelak, Allan Hallgren, Manolis Dris, M. Davenport, N. Neufeld, G. Grosdidier, Alessandra Romero, C. Bosio, P. Negri, C. Joram, A. Ruiz, H. T. Phillips, A. J. Washbrook, P. B. Renton, M. Baubillier, Achille Stocchi, L.J. Carroll, Jørgen Beck Hansen, F. Fulda-Quenzer, Alexander Vodopyanov, J. N. Jackson, P. Roudeau, J. Yi, Tiziano Camporesi, Antonio Baroncelli, S. Tzamarias, N. I. Zimin, Patrick Jarry, Göran Jarlskog, J. Grahl, G. Rinaudo, A. Behrmann, J. Salt, Alberto Benvenuti, L. Di Ciaccio, Wolfgang Adam, R. Keranen, J. Rames, P. Kokkinias, B. Franek, E. Graziani, Borut Paul Kerševan, Maria Elena Pol, A. C. Taffard, Fabrizio Ferro, B. Marechal, E. C. Katsoufis, Rosy Nicolaidou, J. M. Brunet, H. Foeth, G. Mc Pherson, Fabio Cossutti, H. Herr, L. G. Tkatchev, I. Gonzalez Caballero, J. J. Hernandez, H. M. Blom, Ch. Jarlskog, Christophe Royon, S. Hoorelbeke, F. Glege, W. D. Apel, Z. Albrecht, Philippe Charpentier, Francisco Matorras, Paolo Ronchese, A. Onofre, S. Katsanevas, A. Sopczak, M. Huber, Marta Calvi, P. Seager, Josef Strauss, D. Y. Bardin, V. Chabaud, Luis Peralta, F. Kapusta, Vincenzo Canale, Geoffrey Smith, Pawel Jalocha, Barry King, A. Galloni, S. O. Holmgren, E. Spiriti, Jiri Masik, Ph. Zoller, R. Frühwirth, N. Seibert, J. Timmermans, W. Venus, L. S. Vertogradov, N. J. Kjaer, Yu. Belokopytov, M. Espirito Santo, Igor Boyko, Y. Sacquin, T. Lesiak, R. Barbier, J. E. Augustin, R. Paiva, A. Nygren, M. Berggren, R. Lopez-Fernandez, R. C. Shellard, Josef Hrubec, A. De Angelis, P. Collins, G. Borisov, Daniel Bloch, G. Cosme, P. Delpierre, U. Mueller, F. Carena, N. Ghodbane, J. D. Durand, P. Antilogus, J. Rehn, P. V. Chliapnikov, P. Abreu, D. Gele, G. Vegni, P. Bruckman, E. Kriznic, Ahmimed Ouraou, Kathy Huet, P. Jonsson, Valeriy Pozdniakov, A. Van Lysebetten, Sandor Czellar, G. Polok, Yu. Gouz, Ernesto Migliore, I. Bozovic, N. Van Remortel, A. G. Olshevski, R. Sosnowski, S. Haider, G. Myatt, A. M. Segar, F. Simonetto, G. Leder, P. Ferrari, J. Cuevas Maestro, M. Gaspar, P. J. Holt, N. G. Redaelli, Marco Bozzo, B. Åsman, L. Ventura, F. Naraghi, P. Andersson, Klaus Hamacher, N. N. Khovanski, M. Regler, C. Martinez-Rivero, W. Bonivento, G. Orazi, Ugo Gasparini, G. Tristram, E. I. Rosenberg, U. Schwickerath, S. Gamblin, Danilo Zavrtanik, Gareth J. Barker, Rupert Leitner, M. Battaglia, G. Matthiae, R. Gokieli, S. Heising, M. Pernicka, C. Caso, F. Fontanelli, V. Lefebure, R. Muresan, D. Crennell, F. Mandl, Vaclav Vrba, J. Palacios, Arnaud Duperrin, G. Smadja, Tiziano Rovelli, Hans Dijkstra, D. Wicke, D. Bertini, J. Fayot, Jesus Marco, G. Lenzen, P. Kubinec, Clara Troncon, Christine Kourkoumelis, A. Kiiskinen, R. Strub, Sofia Andringa, A. Pullia, Maria Roberta Monge, A. Maio, S. Cabrera, C. Gaspar, A. Zalewska, F. Martinez-Vidal, V. Kostioukhine, Dimos Sampsonidis, A. Malek, G. Della Ricca, Oxana Smirnova, Yu. Sedykh, K. Cieslik, K. Karafasoulis, J. M. Heuser, T. Buran, Sandra Amato, W. T. Meyer, P. Rosinsky, R. Moeller, V. Nomokonov, T. Podobnik, O. Kouznetsov, I. van Vulpen, B. Tome, P. Rebecchi, Th. D. Papadopoulou, V. Ruhlmann-Kleider, B. Golob, H. Palka, A. B. Fenyuk, G. C. Zucchelli, Markus Elsing, J. W. Lamsa, Petar Adzic, H. B. Crawley, Guillelmo Gomez-Ceballos, E. Ferrer-Ribas, J. P. Laugier, B. Schwering, I. Lippi, M. L. Turluer, F. Barao, D. Reid, J. H. Wickens, B. Muryn, Marco Paganoni, S. Crepe, L. K. Resvanis, Massimo Caccia, S. Squarcia, H. Saarikko, J. Drees, M. Bracko, Laurent Mirabito, V. Lepeltier, M. Siebel, C. Parkes, E. Higon, Paolo Checchia, L. Simard, P. Juillot, F. J. Harris, F. Terranova, P. Niezurawski, Corinne Berat, Olga Botner, F. Scuri, W. Van den Boeck, Ph. Gavillet, Cristian Stanescu, P. Branchini, L. Vitale, Antonios Leisos, D. Radojicic, Gianni Zumerle, Georgios Fanourakis, C. Walck, R. Reinhardt, L. Leinonen, Gunter Wolf, Evangelos Gazis, X. Moreau, G. Transtromer, W. Da Silva, W. A. Mitaroff, Carmen García, J. MacNaughton, P. Lutz, V. Chorowicz, Luc Pape, Reynald Pain, J. Libby, Ole Røhne, J. Kurowska, M. Pimenta, P. Poropat, Guido Barbiellini, Andre Augustinus, Claire Bourdarios, Marek Szczekowski, D. Bertrand, Jiri Chudoba, Ph. Schwemling, O. Yushchenko, G. Morton, G. Kernel, R. Sekulin, F. Richard, M. Mazzucato, E. Cortina, P. Chochula, R. Alemany, M. Stanitzki, B. A. Khomenko, T. Moa, I. Ripp-Baudot, G. J. Hughes, H. Klein, J. Guy, Amiran Tomaradze, M. Dracos, A. Passeri, L. Chaussard, A. Markou, C. Matteuzzi, K. Osterberg, S. Almehed, S. Fichet, Chiara Mariotti, Francesco Navarria, Pablo Tortosa, A. Zintchenko, L. Bugge, R. Chierici, P. P. Allport, F. Hahn, M. Nassiakou, S. Hahn, Francesca Romana Cavallo, R. Orava, I. Gil, T. Pavel, Y. Arnoud, S. Stanic, V. V. Lapin, J.R. Mahon, C. De Clercq, W. J. Murray, G. Gopal, K. Hultqvist, G. Eigen, Maarten Boonekamp, L. De Paula, B. Bouquet, I. A. Tyapkin, R. Janik, Andrea Perrotta, M. Trochimczuk, M. Bonesini, T. Spassov, D. Gamba, Tim Adye, M. Witek, G. Voulgaris, F. Verbeure, E. G. Anassontzis, R. Mc Nulty, J. P. Engel, M. V. Castillo Gimenez, B. Jean-Marie, B. Stugu, I. V. Ajinenko, M. Nikolenko, B. Buschbeck, M. Gandelman, L. Gorn, J. Dolbeau, P. Bambade, P.S.L. Booth, Juergen Thomas, E. K. Johansson, L. Jungermann, S. Maltezos, G. D. Alekseev, N. Benekos, E. Piotto, V. Gracco, V. Malychev, R. Lauhakangas, Mario Sannino, O. Klapp, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, S. Marti i Garcia, Borge Svane Nielsen, M. Mc Cubbin, Rafael Marco, Krzysztof Doroba, Chiara Meroni, A. Tonazzo, Peter Kluit, F. Mazzucato, D. Vilanova, Stefano Ragazzi, Morgan Lethuillier, A. Ferrer, Martijn Mulders, Martino Margoni, E. Fokitis, P. Goncalves, Daniel Jeans, V. Obraztsov, F. Tegenfeldt, P. Gris, Thomas Allmendinger, A. Kinvig, T. Alderweireld, N. Pukhaeva, V. Verzi, Ugo Amaldi, W. De Boer, E. Zevgolatakos, A. W. Borgland, Richard Brenner, and Dietrich Liko
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Astrophysics::Cosmology and Extragalactic Astrophysics, Lambda, Lambda baryon, 01 natural sciences, Nuclear physics, Baryon, 0103 physical sciences, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Nuclear Experiment, 010306 general physics, Lepton
Abstract: The longitudinal polarization of the Λb baryon is measured at the LEP e+e− collider by DELPHI. It is determined from the charged lepton and neutrino energy spectra in 249±19 Λb semileptonic decays reconstructed in ≈3.5 million hadronic Z0 decays using Λ0-lepton correlations. The measured polarization is: PΛb=−0.49−0.30+0.32(stat.)±0.17(syst.)
Published: 2000

181. CARATTERIZZAZIONE DI VIRUS INFLUENZALI H10 CON ANTICORPI MONOCLONALI

Author: A. Moreno, D. Lelli, E. Sozzi, E. Canelli, P. Massi, M. Guidoni, M. Fabbi, D. Gamba, P. Cordioli, DELOGU, MAURO, AA/VV, BABSA S., FALCONE E., RUGGERIF.M., PROSPERI S., LAVAZZA A., A. Moreno, D. Lelli, E. Sozzi, E. Canelli, P. Massi, M. Guidoni, M. Delogu, M. Fabbi, D. Gamba, and P. Cordioli
Subjects: H10, ANTICORPI MONOCLONALI, INFLUENZA AVIARE
Abstract: L’obiettivo di questo lavoro è stata la caratterizzazione di virus influenzali aviari sottotipo H10 con l’impiego di anticorpi monoclonali (MAbs) prodotti nei confronti di un ceppo di recente isolamento (A/Dk/It/268302/04 H10N4). Attraverso un procedimento di fusione, sono stati ottenuti 21 MAbs specifici per H10, dei quali 7 inibenti l’emoagglutinazione. Tutti gli anticorpi monoclonali sono stati impiegati in una metodica ELISA sandwich per la caratterizzazione di 32 virus influenzali: il ceppo di referenza A/Ck/Germany/N/49 H10N7; ventidue ceppi isolati dal Prof. Rinaldi tra il 1965 e il 1970 presso la sezione IZSLER di Pavia, dei quali diciassette H10N8 da quaglie domestiche, quattro H10N2 e un H10N8 da tacchino; cinque ceppi isolati durante i piani di monitoraggio per l’avifauna selvatica in Lombardia negli anni 2004-2007 e tipizzati come H10N7 (tre ceppi), H10N4 e H10N3; quattro H10N7 isolati da anatre selvatiche nel 2006 dall’IZS di Roma. Tutti i virus sono stati coltivati su uova embrionate di pollo SPF. La metodica prevede l’uso di un siero policlonale di pollo anti-H10 adsorbito alla piastra per la cattura dei virus oggetto dello studio, la successiva aggiunta dei MAbs e, da ultimo, dell’anti-IgG di topo coniugata con perossidasi. I risultati ottenuti in ELISA hanno messo in evidenza differenze antigeniche a livello di emoagglutinina fra i virus testati: i ceppi di recente isolamento hanno mostrato lo stesso profilo antigenico, mentre quelli isolati da quaglia e tacchino nel periodo 65-70 hanno manifestato un diverso pattern di reattività. In particolare quattro MAbs (2C11,inibente l’emoagglutinazione, e 1A4, 1B9, 1A7) si sono dimostrati reattivi nei confronti di tutti i ceppi analizzati. Tra gli altri MAbs impiegati, due (3C8 e 1G6) hanno mostrato reattività verso i soli virus isolati nel periodo 2004-2007, mentre i restanti quindici MAbs hanno fornito risultati variabili nei confronti dei virus isolati nel periodo 65-70. L’impiego degli anticorpi monoclonali presenta notevoli vantaggi nella pratica diagnostica sia per una rapida tipizzazione dei ceppi sia per lo studio della variabilità antigenica.
Published: 2007

182. SuperB: A High-Luminosity Asymmetric e+ e- Super Flavor Factory. Conceptual Design Report

Author: M. BONA, J. GARRA TIC´O, E. GRAUG´ES POUS, P. COLANGELO, F. DE FAZIO, A. PALANO, M. MANGHISONI, V. RE, G. TRAVERSI, M. BRUSCHI, B. GIACOBBE, R. SPIGHI, A. Y. BARNIAKOV, M. Y. BARNIAKOV, V. E. BLINOV, V. P. DRUZHININ, V. B. GOLUBEV, S. A. KONONOV, I. A. KOOP, E. A. KRAVCHENKO, E. B. LEVICHEV, S. A. NIKITIN, A. P. ONUCHIN, P. A. PIMINOV, S. I. SEREDNYAKOV, D. N. SHATILOV, Y. M. SHATUNOV, Y. I. SKOVPEN, E. P. SOLODOV, C. H. CHENG, B. ECHENARD, F. FANG, D. G. HITLIN, F. C. PORTER, R. FLEISCHER, G. F. GIUDICE, T. HURTH, M. MANGANO, G. MANCINELLI, B. T. MEADOWS, A. J. SCHWARTZ, M. D. SOKOLOFF, T. HAAS, R. MANKEL, P. BALL, M. PAPPAGALLO, M. R. PENNINGTON, W. GRADL, S. PLAYFER, A. ABADA, D. BECIREVIC, S. DESCOTES GENON, O. P`ENE, D. ANDREOTTI, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, A. CECCHI, G. CIBINETTO, P. FRANCHINI, E. LUPPI, M. NEGRINI, A. PETRELLA, L. PIEMONTESE, E. PRENCIPE, V. SANTORO, G. STANCARI, F. ANULLI, R. BALDINI FERROLI, M. E. BIAGINI, M. BOSCOLO, A. CALCATERRA, A. DRAGO, G. FINOCCHIARO, S. GUIDUCCI, G. ISIDORI, S. PACETTI, P. PATTERI, I. M. PERUZZI, M. PICCOLO, M. A. PREGER, P. RAIMONDI, M. RAMA, C. VACCAREZZA, A. ZALLO, M. ZOBOV, R. DE SANGRO, A. BUZZO, M. LO VETERE, M. MACR´, 305, M. R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, S. TOSI, A. LAZZARO, F. PALOMBO, G. BUCHALLA, G. D’AMBROSIO, G. RICCIARDI, I. BIGI, C. P. JESSOP, J. M. LOSECCO, N. ARNAUD, R. CHEHAB, Y. FEDALA, F. POLCI, P. ROUDEAU, V. SORDINI, V. SOSKOV, A. STOCCHI, A. VARIOLA, A. VIVOLI, G. WORMSER, F. ZOMER, A. BERTOLIN, R. BRUGNERA, N. GAGLIARDI, A. GAZ, M. MARGONI, M. MORANDIN, M. POSOCCO, M. ROTONDO, F. SIMONETTO, R. STROILI, G. CALDERINI, L. RATTI, V. SPEZIALI, M. BIASINI, R. COVARELLI, E. MANONI, L. SERVOLI, C. ANGELINI, G. BATIGNANI, S. BETTARINI, F. BOSI, M. CARPINELLI, R. CENCI, A. CERVELLI, M. DELL’ORSO, F. FORTI, P. GIANNETTI, M. GIORGI, A. LUSIANI, G. MARCHIORI, M. MASSA, M. A. MAZUR, F. MORSANI, N. NERI, E. PAOLONI, F. RAFFAELLI, G. RIZZO, J. WALSH, E. BARACCHINI, F. BELLINI, G. CAVOTO, A. D’ORAZIO, D. DEL RE, E. DI MARCO, R. FACCINI, F. FERRAROTTO, M. GASPERO, P. JACKSON, G. MARTINELLI, M. A. MAZZONI, S. MORGANTI, G. PIREDDA, F. RENGA, L. SILVESTRINI, C. VOENA, L. CATANI, A. DI CIACCIO, R. MESSI, E. SANTOVETTI, A. SATTA, M. CIUCHINI, V. LUBICZ, X. CHEN, H. LIU, W. PARK, M. PUROHIT, A. TRIVEDI, R. M. WHITE, J. R. WILSON, M. T. ALLEN, D. ASTON, R. BARTOLDUS, S. J. BRODSKY, Y. CAI, J. COLEMAN, M. R. CONVERY, S. DEBARGER, J. C. DINGFELDER, G. P. DUBOIS FELSMANN, S. ECKLUND, A. S. FISHER, G. HALLER, S. A. HEIFETS, J. KAMINSKI, M. H. KELSEY, M. L. KOCIAN, D. W. G. S. LEITH, N. LI, S. LUITZ, V. LUTH, D. MACFARLANE, R. MESSNER, D. R. MULLER, Y. NOSOCHKOV, A. NOVOKHATSKI, M. PIVI, B. N. RATCLIFF, A. ROODMAN, J. SCHWIENING, J. SEEMAN, A. SNYDER, M. SULLIVAN, J. VA’VRA, U. WIENANDS, W. WISNIEWSKI, F. BIANCHI, D. GAMBA, P. GAMBINO, F. MARCHETTO, E. MENICHETTI, R. MUSSA, M. PELLICCIONI, G. F. DALLA BETTA, M. BOMBEN, L. BOSISIO, C. CARTARO, L. LANCERI, L. VITALE, V. AZZOLINI, J. BERNABEU, N. LOPEZ MARCH, F. MARTINEZ VIDAL, D. A. MILANES, A. OYANGUREN, P. PARADISI, A. PICH, M. A. SANCHIS LOZANO, R. KOWALEWSKI, J. M. RONEY, J. BACK, T. J. GERSHON, P. F. HARRISON, T. E. LATHAM, G. B. MOHANTY, M. PIERINI, DE CASTRO, STEFANO, FACCIOLI, PIETRO, GABRIELLI, ALESSANDRO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, ZOCCOLI, ANTONIO, M. BONA, J. GARRA TIC´O, E. GRAUG´ES POUS, P. COLANGELO, F. DE FAZIO, A. PALANO, M. MANGHISONI, V. RE, G. TRAVERSI, M. BRUSCHI, S. DE CASTRO, P. FACCIOLI, A. GABRIELLI, B. GIACOBBE, N. SEMPRINI CESARI, R. SPIGHI, M. VILLA, A. ZOCCOLI, A.Y. BARNIAKOV, M.Y. BARNIAKOV, V.E. BLINOV, V.P. DRUZHININ, V.B. GOLUBEV, S.A. KONONOV, I.A. KOOP, E.A. KRAVCHENKO, E.B. LEVICHEV, S.A. NIKITIN, A.P. ONUCHIN, P.A. PIMINOV, S.I. SEREDNYAKOV, D.N. SHATILOV, Y.M. SHATUNOV, Y.I. SKOVPEN, E.P. SOLODOV, C.-H. CHENG, B. ECHENARD, F. FANG, D.G. HITLIN, F.C. PORTER, R. FLEISCHER, G.F. GIUDICE, T. HURTH, M. MANGANO, G. MANCINELLI, B.T. MEADOWS, A.J. SCHWARTZ, M.D. SOKOLOFF, T. HAAS, R. MANKEL, P. BALL, M. PAPPAGALLO, M.R. PENNINGTON, W. GRADL, S. PLAYFER, A. ABADA, D. BECIREVIC, S. DESCOTES-GENON, O. P`ENE, D. ANDREOTTI, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, A. CECCHI, G. CIBINETTO, P. FRANCHINI, E. LUPPI, M. NEGRINI, A. PETRELLA, L. PIEMONTESE, E. PRENCIPE, V. SANTORO, G. STANCARI, F. ANULLI, R. BALDINI-FERROLI, M.E. BIAGINI, M. BOSCOLO, A. CALCATERRA, A. DRAGO, G. FINOCCHIARO, S. GUIDUCCI, G. ISIDORI, S. PACETTI, P. PATTERI, I.M. PERUZZI, M. PICCOLO, M.A. PREGER, P. RAIMONDI, M. RAMA, C. VACCAREZZA, A. ZALLO, M. ZOBOV, R. DE SANGRO, A. BUZZO, M. LO VETERE, M. MACR´&#305, and M.R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, S. TOSI, A. LAZZARO, F. PALOMBO, G. BUCHALLA, G. D’AMBROSIO, G. RICCIARDI, I. BIGI, C.P. JESSOP, J.M. LOSECCO, N. ARNAUD, R. CHEHAB, Y. FEDALA, F. POLCI, P. ROUDEAU, V. SORDINI, V. SOSKOV, A. STOCCHI, A. VARIOLA, A. VIVOLI, G. WORMSER, F. ZOMER, A. BERTOLIN, R. BRUGNERA, N. GAGLIARDI, A. GAZ, M. MARGONI, M. MORANDIN, M. POSOCCO, M. ROTONDO, F. SIMONETTO, R. STROILI, G. CALDERINI, L. RATTI, V. SPEZIALI, M. BIASINI, R. COVARELLI, E. MANONI, L. SERVOLI, C. ANGELINI, G. BATIGNANI, S. BETTARINI, F. BOSI, M. CARPINELLI, R. CENCI, A. CERVELLI, M. DELL’ORSO, F. FORTI, P. GIANNETTI, M. GIORGI, A. LUSIANI, G. MARCHIORI, M. MASSA, M.A. MAZUR, F. MORSANI, N. NERI, E. PAOLONI, F. RAFFAELLI, G. RIZZO, J. WALSH, E. BARACCHINI, F. BELLINI, G. CAVOTO, A. D’ORAZIO, D. DEL RE, E. DI MARCO, R. FACCINI, F. FERRAROTTO, M. GASPERO, P. JACKSON, G. MARTINELLI, M.A. MAZZONI, S. MORGANTI, G. PIREDDA, F. RENGA, L. SILVESTRINI, C. VOENA, L. CATANI, A. DI CIACCIO, R. MESSI, E. SANTOVETTI, A. SATTA, M. CIUCHINI, V. LUBICZ, X. CHEN, H. LIU, W. PARK, M. PUROHIT, A. TRIVEDI, R.M. WHITE, J.R. WILSON, M.T. ALLEN, D. ASTON, R. BARTOLDUS, S.J. BRODSKY, Y. CAI, J. COLEMAN, M.R. CONVERY, S. DEBARGER, J.C. DINGFELDER, G.P. DUBOIS-FELSMANN, S. ECKLUND, A.S. FISHER, G. HALLER, S.A. HEIFETS, J. KAMINSKI, M.H. KELSEY, M.L. KOCIAN, D.W.G.S. LEITH, N. LI, S. LUITZ, V. LUTH, D. MACFARLANE, R. MESSNER, D.R. MULLER, Y. NOSOCHKOV, A. NOVOKHATSKI, M. PIVI, B.N. RATCLIFF, A. ROODMAN, J. SCHWIENING, J. SEEMAN, A. SNYDER, M. SULLIVAN, J. VA’VRA, U. WIENANDS, W. WISNIEWSKI, F. BIANCHI, D. GAMBA, P. GAMBINO, F. MARCHETTO, E. MENICHETTI, R. MUSSA, M. PELLICCIONI, G.F. DALLA BETTA, M. BOMBEN, L. BOSISIO, C. CARTARO, L. LANCERI, L. VITALE, V. AZZOLINI, J. BERNABEU, N. LOPEZ-MARCH, F. MARTINEZ-VIDAL, D.A. MILANES, A. OYANGUREN, P. PARADISI, A. PICH, M.A. SANCHIS-LOZANO, R. KOWALEWSKI, J.M. RONEY, J. BACK, T.J. GERSHON, P.F. HARRISON, T.E. LATHAM, G.B. MOHANTY, M. PIERINI
Subjects: Physics::Instrumentation and Detectors, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract: The physics objectives of SuperB, an asymmetric electron-positron collider with a luminosity above 10^36/cm^2/s are described, together with the conceptual design of a novel low emittance design that achieves this performance with wallplug power comparable to that of the current B Factories, and an upgraded detector capable of doing the physics in the SuperB environment.
Published: 2007

183. Design of on-chip data sparsification for a mixed-mode MAPS device

Author: GABRIELLI, ALESSANDRO, SEMPRINI CESARI, NICOLA, SPIGHI, ROBERTO, VILLA, MAURO, ZOCCOLI, ANTONIO, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell'Orso, F. Forti, P. Giannetti, M. A. Giorgi, A. Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. R, G. Traversi, L. Bosisio, G. Giacobini, L. Lanceri, I. Rachevskai, L. Vitale, G. F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, B. Giacobbe, A. Gabrielli, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell'Orso, F. Forti, P. Giannetti, M.A. Giorgi, A.Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, C. Andreoli, E. Pozzati, L. Ratti, V. Speziali, M. Manghisoni, V. R, G. Traversi, L. Bosisio, G. Giacobini, L. Lanceri, I. Rachevskai, L. Vitale, G.F. Dalla Betta, G. Soncini, G. Fontana, L. Pancheri, G. Verzellesi, D. Gamba, G. Giraudo, P. Mereu, M. Bruschi, B. Giacobbe, N. Semprini, R. Spighi, M. Villa, and A. Zoccoli
Subjects: Physics::Instrumentation and Detectors, PIXEL, MAPS, SPARSIFICATION
Abstract: The device described in the paper is built up of a bidimensional matrix of Monolithic Active Pixel Sensor (MAPS) and an off-pixel digital readout sparsification circuit. The readout logic is based on std-cells and implements an optimised technique aimed at overcoming the readout speed limit of future large-matrix pixel detectors for particle tracking, by matching the requirements of future HEP experiments. In particular, the readout architecture extends the flexibility of the MAPS devices to be also used in first level triggers in vertex detectors. The work extends a first version of a mixed mode device submitted on Nov. 2006 and implemented with the same technology.
Published: 2007

184. Development of Deep N-Well Monolithic Active Pixel Sensors in a 0.13 µm CMOS Technology

Author: S. BETTARINI, A. BARDI, G. BATIGNANI, F. BOSI, G. CALDERINI, R. CENCI, M. DELLORSO, F. FORTI, P. GIANNETTI, M. A. GIORGI, A. LUSIANI, G. MARCHIORI, F. MORSANI, N. NERI, E. PAOLONI, G. RIZZO, J. WALSH, C. ANDREOLI, E. POZZATI, L. RATTI, V. SPEZIALI, M. MANGHISONI, V. RE, G. TRAVERSI, G. GIACOMINI, I. RACHEVSKAIA, VITALE, LORENZO, M. BRUSCHI, B. GIACOBBE, N. SEMPRINI, R. SPIGHI, M. VILLA, A. ZOCCOLI, D. GAMBA, G. GIRAUDO, P. MEREU, G. F. DALLA BETTA, G. SONCINI, G. FONTANA, L. PANCHERI AND G. VERZELLESI, BOSISIO, LUCIANO, LANCERI, LIVIO, S., Bettarini, A., Bardi, G., Batignani, F., Bosi, G., Calderini, R., Cenci, M., Dellorso, F., Forti, P., Giannetti, M. A., Giorgi, A., Lusiani, G., Marchiori, F., Morsani, N., Neri, E., Paoloni, G., Rizzo, J., Walsh, C., Andreoli, E., Pozzati, L., Ratti, V., Speziali, M., Manghisoni, V., Re, G., Traversi, Bosisio, Luciano, G., Giacomini, Lanceri, Livio, I., Rachevskaia, Vitale, Lorenzo, M., Bruschi, B., Giacobbe, N., Semprini, R., Spighi, M., Villa, A., Zoccoli, D., Gamba, G., Giraudo, P., Mereu, G. F., DALLA BETTA, G., Soncini, G., Fontana, and L. PANCHERI AND G., Verzellesi
Published: 2007

185. Recent developments in 130-nm CMOS monolithic active pixel detectors

Author: G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell'Orso, F. Forti, P. Giannetti, M. A. Giorgi, A. Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, L. Gaioni, M. Manghisoni, V. Re, G. Traversi, M. Bruschi, B. Giacobbe, R. Spighi, G. Verzellesi, C. Andreoli, E. Pozzati, L. Ratti, V. Speziali, D. Gamba, G. Giraudo, P. Mereu, L. Bosisio, G. Giacomini, L. Lancieri, GABRIELLI, ALESSANDRO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, ZOCCOLI, ANTONIO, G. Batignani, S. Bettarini, F. Bosi, G. Calderini, R. Cenci, M. Dell'Orso, F. Forti, P. Giannetti, M.A. Giorgi, A. Lusiani, G. Marchiori, F. Morsani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, L. Gaioni, M. Manghisoni, V. Re, G. Traversi, M. Bruschi, A. Gabrielli, B. Giacobbe, N. Semprini-Cesari, R. Spighi, M. Villa, A. Zoccoli, G. Verzellesi, C. Andreoli, E.Pozzati, L. Ratti, V. Speziali, D. Gamba, G. Giraudo, P. Mereu, L. Bosisio, G. Giacomini, and L. Lancieri
Subjects: ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Abstract: We developed monolithic active pixel detectors, by exploiting the triple well option available in a deep-submicron CMOS process. The novel features are the full analog signal processing and digital functionality implemented at the pixel level. The charge collecting element is realized using the deep N-well (DNW), the full in-pixel signal processing chain includes charge preamplifier, shaper, discriminator and latch. We report on the characterization of the two prototype chips, the first (APSEL0) containing single-channel sensors, with different collecting electrode area, and the latter (APSEL1) with several single pixel structures with improved noise figure implementing also an 8 × 8 matrix of 50 × 50 μm2 pixel area. So far, the pixel matrix has a simple row by row readout, successfully tested with clock frequency up to 30 MHz. The response of the sensors to infra-red laser, β-rays and soft X-rays (from radioactive sources, 90Sr and 55Fe respectively) will be presented. The results achieved so far demonstrate the viability of the technology and suggest new design improvements implemented in the next prototype chips submission (APSEL2).
Published: 2007

186. Search for chargino pair production in scenarios with gravitino LSP and stau NLSP at GeV at LEP

Author: A. Deghorain, Natale Demaria, N. Tinti, R. Lauhakangas, L. Leinonen, M. Tobin, Piotr Zalewski, E. Higon, C. Martinez-Rivero, K. Muenich, P. Bruckman, E. Kriznic, G. Orazi, P. B. Renton, F. Scuri, Louis Lyons, Danilo Zavrtanik, Ugo Gasparini, A. C. Taffard, R. Gokieli, M. Feindt, I. Gonzalez Caballero, V.A. Uvarov, B. Marechal, T. Tabarelli, S. Sánchez Navas, R. Muresan, Sofia Andringa, O. Solovianov, Guido Barbiellini, J. Guy, P. Negri, P. Ferrari, Andrea Perrotta, Göran Jarlskog, O. Klapp, Rosy Nicolaidou, Marta Calvi, E. K. Johansson, Ch. Jarlskog, M. A. Bizouard, P. Niezurawski, Demetrios Loukas, F. Glege, W. D. Apel, Patrick Jarry, G. Rinaudo, S. Stanic, Borge Svane Nielsen, Geoffrey Smith, Tim Adye, Krzysztof Doroba, Chiara Meroni, G. Cosme, K. Stevenson, J. N. Jackson, G. Vegni, F. Carena, S. Cabrera, H. Rahmani, L. Jungermann, A. Tonazzo, M. Pernicka, Klaus Hamacher, X. Moreau, Jesus Marco, G. Lenzen, Oxana Smirnova, Luca Tortora, T. Myklebust, V. Kostioukhine, M. Koratzinos, J. Rames, R. Mc Nulty, J-C. Marin, I. Gil, S. Fichet, Ariella Cattai, Christophe Royon, S. Hoorelbeke, G. Grosdidier, B. Jean-Marie, Paolo Ronchese, V. Malychev, Gareth J. Barker, Peter Kluit, F. Mazzucato, Dietrich Liko, Chariclia Petridou, G. Valenti, P. Adzic, K. Karafasoulis, J. Libby, Ole Røhne, Rupert Leitner, M. Pimenta, G. Matthiae, F. Ledroit, D. Fassouliotis, A. N. Sisakian, P. Herquet, R. Contri, Nicola Amapane, U. Mueller, Stefano Ragazzi, F. Barao, O. Ullaland, B. Schwering, M. L. Turluer, D. Reid, N. J. Kjaer, M. A. Winter, Nektarios Benekos, A. Petrolini, Daniel Treille, M. Bigi, J. Fayot, J. Ridky, C. Vander Velde, Morgan Lethuillier, F. Pierre, B. A. Khomenko, E. I. Rosenberg, T. Buran, Markus Elsing, A. Sadovsky, A. Stocchi, Francesco Navarria, Pablo Tortosa, I. van Vulpen, J. M. Heuser, G. Smadja, Tiziano Camporesi, A. Zintchenko, P. J. Holt, Vincent Hedberg, D. W. Lane, Manolis Dris, B. De Lotto, P. Kubinec, Clara Troncon, S. Crepe, J. Van Eldik, P. Jalocha, Gianni Zumerle, G. Crosetti, Evgueni Vlasov, A. J. Washbrook, K. Kurvinen, S. Gamblin, N. G. Redaelli, G. Tristram, V. Chorowicz, Marco Bozzo, G. Ekspong, M. Davenport, D. Wicke, P. N. Ratoff, G. Mc Pherson, B. Franek, Attilio Andreazza, M. Nikolenko, V. Ruhlmann-Kleider, H. Herr, L. G. Tkatchev, L. Gorn, G. A. Chelkov, Ugo Amaldi, N. Ghodbane, J. Drees, C. Walck, R. Reinhardt, Alberto Benvenuti, Fabrizio Ferro, W. De Boer, E. Zevgolatakos, A. W. Borgland, E. Ferrer-Ribas, Manfred Krammer, Denis Gelé, P. Poropat, Andromachi Tsirou, Andre Augustinus, A. Nygren, M. Bracko, A. Tomaradze, Martijn Mulders, Mattias Ellert, M. Begalli, Martino Margoni, E. Fokitis, G. D. Alekseev, A. G. Frodesen, S. Tzamarias, N. I. Zimin, T. G M Malmgren, H. Wahlen, K. H. Becks, E. Vallazza, G. J. Hughes, D. Bertrand, Corinne Berat, Olga Botner, G. Transtromer, Carmen García, Ph. Schwemling, O. Yushchenko, Jiri Chudoba, Chiara Mariotti, Reynald Pain, Mario Sannino, I. Lippi, J. H. Lopes, U. Parzefall, A. Firestone, J. H. Wickens, Marco Paganoni, S. Hahn, W. Liebig, Tord Ekelof, R. Sekulin, Evangelos Gazis, L. Bugge, M. Stanitzki, J. J. Hernandez, T. Pavel, U. Mjoernmark, P. Buschmann, B. Muryn, M. Chapkin, Francesca Romana Cavallo, M. Mc Cubbin, Paulo J. S. Gonçalves, P. Van Dam, K. Hultqvist, Rafael Marco, L. Ventura, N. Neufeld, R. Mc Kay, Y. Arnoud, Vaclav Vrba, T. Moa, C. Mulet-Marquis, A. Duperrin, V. V. Lapin, A. Galloni, H. T. Phillips, Richard Brenner, Hans Dijkstra, J. Grahl, S. O. Holmgren, C. De Clercq, P. Delpierre, P. Andersson, B. Loerstad, P. V. Chliapnikov, A. Behrmann, P. Kokkinias, R. Janik, C. Gaspar, L. S. Vertogradov, C. Bosio, G. Kernel, W. J. Murray, A. Markou, A. Kinvig, Christian Weiser, A. Sopczak, D. Vilanova, L. Chaussard, L. Di Ciaccio, R. Strub, L. Vitale, R. Keranen, Guy Wilkinson, F. Martinez-Vidal, Antonios Leisos, D. Radojicic, Gunter Wolf, Georgios Fanourakis, Tiziano Rovelli, Philippe Charpentier, Francisco Matorras, Juergen Thomas, Barry King, P. Seager, G. Borisov, Borut Paul Kerševan, G. C. Zucchelli, V. Nomokonov, R. Lopez-Fernandez, R. C. Shellard, A. Passeri, Josef Hrubec, Christine Kourkoumelis, Wolfgang Adam, G. Myatt, M. Moch, E. Spiriti, T. Alderweireld, J. E. Augustin, R. Frühwirth, N. N. Khovanski, T. Spassov, A. M. Segar, K. Grzelak, M. Baubillier, Yu. Belokopytov, V. Canale, N. Seibert, V. Lepeltier, M. Siebel, J. Timmermans, Allan Hallgren, E. C. Katsoufis, G. Gopal, M. Huber, P. Lutz, Paolo Checchia, F. Fulda-Quenzer, F. Fontanelli, Antonio Baroncelli, Jørgen Beck Hansen, Oliver Passon, B. Tome, P. Antilogus, J. Rehn, Ph. Gavillet, A. M. Zaitsev, Alexander Vodopyanov, Luc Pape, Josef Strauss, J. Kurowska, J. Palacios, V. Chabaud, M. Espirito Santo, N. Pukhaeva, Maarten Boonekamp, E. Graziani, J. M. Brunet, H. Foeth, I. A. Tyapkin, R. Alemany, J. MacNaughton, L. De Paula, V. Verzi, G. Morton, Paolo Privitera, M. Mazzucato, J. R. Mahon, Pierre Juillot, Claire Bourdarios, E. Boudinov, W. Venus, Christopher Parkes, Matteo Pegoraro, B. Buschbeck, Z. Krumstein, A. De Angelis, S. Paiano, A. Onofre, P. Collins, J. Cuevas Maestro, Daniel Jeans, A. De Min, V. Obraztsov, Paolo Morettini, Daniel Bloch, P. Roudeau, J. G. Loken, P. Beilliere, Ahmimed Ouraou, M. S. Bilenky, F. Tegenfeldt, Luis Peralta, F. Kapusta, P. Gris, E. Cortina, S. Heising, G. Sajot, U. Flagmeyer, Krzysztof Nawrocki, Stavros Maltezos, H. M. Blom, Y. Sacquin, Kathy Huet, Valeriy Pozdniakov, L.J. Carroll, Per Jönsson, A. Pullia, Anna Lipniacka, Fabio Cossutti, Igor Boyko, T. Lesiak, C. Joram, F. Simonetto, G. Leder, M. Gaspar, J. P. Laugier, R. Barbier, Marek Szczekowski, B. Åsman, V. Lefebure, P. Rosinsky, D. Crennell, N. Mastroyiannopoulos, R. Moeller, F. Mandl, H. Klein, L. K. Resvanis, K. Osterberg, Massimo Caccia, L. Simard, M. Trochimczuk, K. Cieslik, M. Bonesini, D. Gamba, M. Witek, G. Voulgaris, F. Verbeure, B. Stugu, M. Gandelman, E. G. Anassontzis, J. P. Engel, P. Bambade, M. V. Castillo Gimenez, B. Golob, V. Gracco, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, S. Marti i Garcia, W. Da Silva, W. A. Mitaroff, W. K. Van Doninck, F. Richard, P. Chochula, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, M. Nassiakou, R. Paiva, S. Haider, F. J. Harris, F. Terranova, C. Caso, H. B. Crawley, Alessandra Romero, A. Ruiz, I. Bozovic, N. Van Remortel, R. Sosnowski, F. Naraghi, Dimos Sampsonidis, Phillip Allport, G. Della Ricca, P. Rebecchi, Th. D. Papadopoulou, Guillelmo Gomez-Ceballos, José Salt, Amelia Maio, W. Van den Boeck, Cristian Stanescu, P. Branchini, J. D. Durand, A. G. Olshevski, U. Schwickerath, Maria Roberta Monge, A. Zalewska, W. T. Meyer, M. Verlato, Laurent Mirabito, T. J. V. Bowcock, T. L. Hessing, M. Berggren, Z. Albrecht, Juan Fuster, Antonio Ferrer, D. Bertini, R. Jacobsson, S. Todorova, T. Allmendinger, J. M. Lopez, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, J. Yi, M. Battaglia, J. Masik, A. Van Lysebetten, Sandor Czellar, G. Polok, B. Bouquet, Yu. Gouz, Ernesto Migliore, P. Abreu, R. Orava, G. Eigen, Maria Elena Pol, S. Katsanevas, A. Kiiskinen, D. Y. Bardin, Sandra Amato, T. Podobnik, O. Kouznetsov, K. Belous, M. Regler, S. Squarcia, Yu. Sedykh, H. Saarikko, J. Dolbeau, P.S.L. Booth, E. Piotto, W. Bonivento, A. Malek, A. Sokolov, Marcos Dracos, H. Palka, and J. W. Lamsa
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Context (language use), 01 natural sciences, Lightest Supersymmetric Particle, Nuclear physics, Pair production, Chargino, 0103 physical sciences, High Energy Physics::Experiment, Gravitino, Production (computer science), 010306 general physics, Energy (signal processing)
Abstract: Promptly decaying lightest charginos were searched for in the context of scenarios with gravitino LSP. It was assumed that the stau is the next to lightest supersymmetric particle (NLSP). Data collected with the DELPHI detector at a centre-of-mass energy near 183~{~mbox{${mathrm{GeV}}$}}\nwere analysed combining the methods developed in previous searches. No evidence for the production of these particles was found. Hence, limits were derived at 95% confidence level. The mass of charginos was found to be greater than 85.5~GeV/$c^2$ for $m_{ ilde{chi}^+_1}-m_{ ilde{ au}_1}geq 0.3 {mathrm{GeV}}/c^2$, independently of the mass of the gravitino.
Published: 1999

187. Measurement of the rate of events in hadronic Z decays and the extraction of the gluon splitting into

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, H-J. Grimm, P. Gris, G. Grosdidier, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, B. Schwering, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stanic, K. Stevenson, A. Stocchi, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Van Remortel, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, C. Vollmer, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Jet (particle physics), 01 natural sciences, Bottom quark, Gluon, 0103 physical sciences, Invariant mass, Production (computer science), Atomic physics, 010306 general physics, Bar (unit)
Abstract: The rate $Z \rightarrow b\overline{b}b\overline{b}$ was measured using about $2 x 10^6$ hadronic decays collected by the DELPHI experiment in 1994 and 1995. Events were forced into 3-jets with $y_{min} 0.06$ and a b-tag was required for every jet. The rate was measured to be: $R_{4b} = BR(Z \to b\overline{b}b\overline{b}) / BR(Z \to hadrons) = (6.0 +- 1.9(stat) +- 1.4(syst.)) x 10^{-4}$ where the invariant mass of every $b\overline{b}$ system is above twice the b quark mass. Using the value of $R_{4b}$ the probability of secondary production of a $b\overline{b}$ pair from a gluon per hadronic $Z$ decay, $g_{bb}$, was extracted and found to be: $g_{bb} = (3.3+-1.0(stat.) +- 0.8(syst.)) x 10^{-3}$.
Published: 1999

188. The small angle tile calorimeter in the DELPHI experiment

Author: M. Bonesini, Toralf Bernhard Skaali, D. Gamba, S. Gumenyuk, Alexander Lincoln Read, A. Klovning, M. Guerzoni, A. Konoplyannikov, L. Simonetti, Luis Peralta, E. Falk, S. J. Alvsvaag, A. Maio, D.R. Dharmasiri, M. Pimenta, Yu. Gouz, Ernesto Migliore, Francesco Navarria, Bjarne Stugu, V. Obraztsov, Evgueni Vlasov, L. Lanceri, M. Bari, R. Mazza, V. Giordano, L. Castellani, H. Carling, Marco Paganoni, M.G. Verardi, R. Cereseto, E. Vallazza, F. Chignoli, E. Torassa, G. Della Ricca, Vincent Hedberg, B. Nossum, B. Tome, A. N. Karyukhin, M. Espirito Santo, V. Cassio, I. Kronkvist, M. Prest, Matteo Pegoraro, Alberto Benvenuti, O.A. Maeland, A. M. Zaitsev, Tiziano Camporesi, Marco Bozzo, P. Ferrari, P.P. Trapani, P. Poropat, L. Petrovykh, G.P. Barreira, A. B. Fenyuk, Alessandra Romero, N. Shalanda, A. Onofre, F. Terranova, Roberto Leoni, P. Negri, Göran Jarlskog, M. Bigi, DELLA RICCA, Giuseppe, Lanceri, Livio, and Poropat, Paolo
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Scintillator, Tracking (particle physics), Particle detector, shashlik calorimeter, law.invention, Nuclear physics, LEP, DELPHI, luminosity monitor, law, Detectors and Experimental Techniques, Collider, Instrumentation, Physics, Large Hadron Collider, Detector, LARGE ELECTRON POSITRON COLLIDER, Calorimeter, PARTICLE PHYSICS, High Energy Physics::Experiment, Shashlik
Abstract: The {\bf S}mall angle {\bf TI}le {\bf C}alorimeter ({\bf STIC}) provides calorimetric coverage in the very forward region of the DELPHI experiment at the CERN LEP collider. The structure of the calorimeters, built with a so-called ``shashlik'' technique, gives a perfectly hermetic calorimeter and still allows for the insertion of tracking detectors within the sampling structure to measure the direction of the showering particle. A charged-particle veto system, composed of two scintillator layers, makes it possible to trigger on single photon events and provides e-$\gamma$ separat ion. Results are presented from the extensive studies of these detectors in the CERN testbeams prior to installation and of the detector performance at LEP.
Published: 1999

189. Measurement of inclusive ρ0, f0(980), f2(1270), K and f′2(1525) production in Z0 decays

Author: Natale Demaria, J. H. Lopes, L. S. Vertogradov, Mario Sannino, T. Spassov, G. Borisov, U. Parzefall, A. Firestone, Attilio Andreazza, M. Mc Cubbin, M. Baubillier, V. Canale, K. Hultqvist, Rafael Marco, P. B. Renton, Jørgen Beck Hansen, R. Lopez-Fernandez, R. C. Shellard, Josef Hrubec, H. Palka, Alexander Vodopyanov, Stefano Ragazzi, Morgan Lethuillier, C. Mulet-Marquis, Paulo J. S. Gonçalves, P. Van Dam, P. Abreu, N. Neufeld, F. Bianchi, A. Tomaradze, Martijn Mulders, Martino Margoni, E. Fokitis, G. Vegni, B. Marechal, A. M. Segar, A. Sheridan, G. A. Chelkov, Marta Calvi, Geoffrey Smith, D. Vilanova, T. Brenke, Ugo Amaldi, G. J. Hughes, W. De Boer, E. Zevgolatakos, K. Stevenson, J. Yi, F. Fontanelli, J. Palacios, Tiziano Rovelli, M. Moch, Dietrich Liko, Hans Dijkstra, P. Bruckman, A. W. Borgland, G. Valenti, Chiara Mariotti, Piotr Zalewski, K. Grzelak, G. Orazi, Ugo Gasparini, Guido Barbiellini, J. Guy, S. Stanic, Tim Adye, J. Cuevas Maestro, Chariclia Petridou, A. G. Olshevski, Luis Peralta, F. Kapusta, M. Battaglia, Allan Hallgren, Antonio Baroncelli, A. N. Sisakian, Wolfgang Adam, D. Fassouliotis, I. van Vulpen, G. W. Van Apeldoorn, D. Bertrand, S. Hahn, A. Kiiskinen, L. Ventura, Jiri Chudoba, L. Bugge, Pawel Jalocha, Barry King, Luca Tortora, T. Myklebust, Francesca Romana Cavallo, E. Spiriti, A. Sadovsky, F. Pierre, Daniel Treille, V.A. Uvarov, M. Bigi, Y. Arnoud, U. Schwickerath, A. Stocchi, Vincent Hedberg, P. Herquet, P. Andersson, R. Contri, J. Fayot, Sandra Amato, T. Podobnik, J. Timmermans, A. Van Lysebetten, Sandor Czellar, E. G. Anassontzis, Yu. Belokopytov, J. Ridky, V. V. Lapin, D. W. Lane, M. A. Bizouard, Gunter Wolf, C. De Clercq, Maria Roberta Monge, Richard Brenner, A. Pullia, T. Burgsmueller, G. Ekspong, D. Stampfer, G. Polok, Christine Kourkoumelis, W. J. Murray, J. N. Jackson, A. Duperrin, J. P. Engel, Christophe Royon, S. Hoorelbeke, Mariusz Witek, Paolo Ronchese, S. Squarcia, H. Saarikko, F. Simonetto, M. V. Castillo Gimenez, W. T. Meyer, R. Janik, Yu. Gouz, M. Gunther, J-C. Marin, B. Erzen, P. Kokkinias, R. Strub, Manolis Dris, Luc Pape, Manfred Krammer, Denis Gelé, J. Kurowska, N. J. Kjaer, P. N. Ratoff, F. Carena, Rupert Leitner, T. Tabarelli, P. Roudeau, Ernesto Migliore, A. Passeri, Guy Wilkinson, G. Leder, Pierre Juillot, E. Boudinov, O. Tchikilev, P. Rosinsky, G. Matthiae, Oxana Smirnova, Mattias Ellert, Andrea Perrotta, M. A. Winter, M. Gaspar, M. Verlato, Alberto Benvenuti, G. Smadja, S. Crepe, J. Van Eldik, S. Cabrera, B. Åsman, H. Rahmani, Laurent Mirabito, K. Karafasoulis, G. Damgaard, A. Petrolini, C. Gaspar, M. Davenport, A. Onofre, B. Golob, V. Chorowicz, M. Begalli, B. De Lotto, G. Crosetti, Evgueni Vlasov, V. Obraztsov, C. Green, G. Tristram, R. Alemany, Juergen Thomas, M. L. Turluer, D. Reid, Ariella Cattai, R. Moeller, F. Barao, Paolo Morettini, J. G. Loken, G. Morton, Paolo Privitera, M. Mazzucato, J. R. Mahon, V. Ruhlmann-Kleider, G. C. Zucchelli, R. Mc Nulty, V. Lefebure, P. Seager, M. Berggren, F. Tegenfeldt, L. K. Resvanis, P. Beilliere, M. Pernicka, D. Crennell, Jelena Krstic, F. Mandl, N. Tinti, P. Gris, E. Cortina, V. Gracco, F. Ledroit, P. Kubinec, S. Fichet, G. Mc Pherson, C. Joram, A. G. Frodesen, Gianni Zumerle, Dimos Sampsonidis, Phillip Allport, G. Della Ricca, P. Rebecchi, O.M. Kouznetsov, Antonio Ferrer, D. Bertini, R. Jacobsson, S. Todorova, H. Herr, L. G. Tkatchev, A. Nygren, J. W. Lamsa, Jesus Marco, G. Lenzen, O. Ullaland, Nikolaos P. Mastroyiannopoulos, C. Bosio, V. Lepeltier, M. Siebel, L. Leinonen, K. Muenich, Massimo Caccia, P. Poropat, T. J. V. Bowcock, V. Kostioukhine, M. Koratzinos, Clara Troncon, Paolo Checchia, Ph. Gavillet, S. Gamblin, Guillelmo Gomez-Ceballos, A. Deghorain, O. Klapp, T. L. Hessing, Andromachi Tsirou, L. Simard, L. Gorn, Andre Augustinus, José Salt, E. Higon, S. Tzamarias, N. I. Zimin, T. G M Malmgren, H. Wahlen, Maciej Górski, Theodora Papadopoulou, Ph. Schwemling, Louis Lyons, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, S. Marti i Garcia, Krzysztof Nawrocki, F. Scuri, A. Kinvig, E. Ferrer-Ribas, Marek Szczekowski, H. Klein, Amelia Maio, Borut Paul Kerševan, Borge Svane Nielsen, K. Cieslik, O. Yushchenko, R. Sekulin, Tiziano Camporesi, J. MacNaughton, G. Barker, K. Osterberg, V. Nomokonov, T. Alderweireld, B. Franek, S. De Brabandere, G. Cosme, M. Trochimczuk, Josef Strauss, P. J. Holt, D. Rakoczy, Cristian Stanescu, P. Branchini, H. Schneider, T. Allmendinger, R. Paiva, M. Feindt, S. Sánchez Navas, N. G. Redaelli, P. V. Chliapnikov, J. J. Hernandez, Claire Bourdarios, P. Negri, M. Bonesini, V. Chabaud, M. Espirito Santo, Z. Krumstein, Marco Bozzo, Demetrios Loukas, R. Lauhakangas, J. M. Lopez, S. Haider, T. Moa, Krzysztof Doroba, Chiara Meroni, C. Vollmer, S. Paiano, A. De Min, P. Ferrari, D. Gamba, I. Lippi, Jean-Dominique Durand, K. H. Becks, E. Kriznic, G. Sajot, U. Flagmeyer, A. Tonazzo, Petar Adzic, G. Voulgaris, J. H. Wickens, E. Vallazza, Marco Paganoni, C. Caso, F. Verbeure, I. Gil, E. K. Johansson, N. Pukhaeva, J. E. Augustin, Anna Lipniacka, Peter Kluit, A. Zalewska, C. Walck, R. Reinhardt, V. Verzi, Z. Albrecht, Juan Fuster, P. Sponholz, Göran Jarlskog, B. Stugu, C. Weiser, F. Mazzucato, M. Gandelman, H. J. Grimm, A. Markou, Danilo Zavrtanik, Ch. Jarlskog, F. Glege, H. B. Crawley, R. Gokieli, U. Mjoernmark, N. Vassilopoulos, L. Vitale, W. D. Apel, Paul Baillon, Alexander Lincoln Read, R. Muresan, F. Martinez-Vidal, Antonios Leisos, D. Radojicic, Georgios Fanourakis, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, Sofia Andringa, H. T. Phillips, B. Tome, P. Antilogus, F. Fulda-Quenzer, A. Normand, R. Barbier, P. Lutz, V. Malychev, G. Grosdidier, A. Sopczak, E. C. Katsoufis, G. Gopal, E. Graziani, Maarten Boonekamp, P. Delpierre, J. M. Brunet, L. De Paula, E. Falk, M. S. Bilenky, L. Di Ciaccio, L.N. Gerdyukov, L.J. Carroll, Tord Ekelof, N. N. Khovanski, P. Buschmann, B. Muryn, R. Mc Kay, G. Myatt, Fabio Cossutti, J. P. Laugier, J. Grahl, Norbert Neumeister, J. Libby, Ole Røhne, M. Pimenta, Igor Boyko, B. A. Khomenko, R. Keranen, Philippe Charpentier, Francisco Matorras, B. Loerstad, Francesco Navarria, I. Gonzalez Caballero, T. Lesiak, P. Langefeld, T. Buran, Markus Elsing, Klaus Hamacher, X. Moreau, J. M. Heuser, Oliver Passon, A. Miagkov, M. Nikolenko, Corinne Berat, Olga Botner, Christopher Parkes, Matteo Pegoraro, Patrick Jarry, G. Rinaudo, G. Transtromer, Carmen García, U. Mueller, E. I. Rosenberg, K. Kurvinen, D. Wicke, C. Martinez-Rivero, Reynald Pain, H. Foeth, B. Ueberschaer, W. Venus, A. De Angelis, P. Collins, Alessandra Romero, A. Ruiz, Daniel Bloch, Ahmimed Ouraou, S. Heising, M. A E Schyns, V. Vrba, I. Bozovic, R. Sosnowski, F. Naraghi, R. Nicolaidou, F. J. Harris, F. Terranova, J. Dolbeau, P. Bambade, P.S.L. Booth, E. Piotto, J. Masik, B. Bouquet, B. Jean-Marie, R. Orava, G. Eigen, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, W. Da Silva, W. A. Mitaroff, W. K. Van Doninck, F. Richard, P. Chochula, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, M. Regler, Yu. Sedykh, J. H. Cowell, I. A. Tyapkin, I. V. Ajinenko, N. Ghodbane, J. Drees, Evangelos Gazis, L. Chaussard, H. M. Blom, Y. Sacquin, Kathy Huet, Valeriy Pozdniakov, Per Jönsson, W. Bonivento, A. Malek, A. Sokolov, Marcos Dracos, A. Galloni, S. O. Holmgren, and G. D. Alekseev
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Time projection chamber, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, 01 natural sciences, Particle identification, Ionization, 0103 physical sciences, Large Electron–Positron Collider, 010306 general physics, Cherenkov radiation
Abstract: DELPHI results are presented on the inclusive production of the neutral mesons ρ0, f0(980), f2(1270), KView the MathML source and f′2(1525) in hadronic Z0 decays. They are based on about 2 million multihadronic events collected in 1994 and 1995, using the particle identification capabilities of the DELPHI Ring Imaging Cherenkov detectors and measured ionization losses in the Time Projection Chamber. The total production rates per hadronic Z0 decay have been determined to be: 1.19±0.10 for ρ0; 0.164±0.021 for f0(980); 0.214±0.038 for f2(1270); 0.073±0.023 for KView the MathML source; and 0.012±0.006 for f′2(1525). The total production rates for all mesons and differential cross-sections for the ρ0, f0(980) and f2(1270) are compared with the results of other LEP experiments and with models.
Published: 1999

190. Search for Leptoquarks and FCNC in e+e− annihilations at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, T. Aldeweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, G. Damgaard, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Fenyuk, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, S. Fichet, A. Firestone, P.-A. Fischer, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, H-J. Grimm, P. Gris, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, W. Kucewicz, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, J. Mazik, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, N. Tinti, L.G. Tkatchev, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, C. Vollmer, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Flavour, Scalar (mathematics), Charge (physics), Jet (particle physics), 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, Leptoquark, 010306 general physics, Lepton
Abstract: A search for events with one jet and at most one isolated lepton used data taken at LEP-2 by the DELPHI detector.These data were accumulated at a center-of-mass energy of 183 GeV and correspond to an integrated luminosity of 47.7 1/pb. Production of single scalar and vector leptoquarks was searched for. Limits at 95% confidence level were derived on the masses (ranging from $134 GeV/c^2$ to $171 GeV/c^2$ for electromagnetic type couplings) and couplings of the leptoquark states.A search for top-charm flavour changing neutral currents($e^+ e^- \to \bar t c$ or charge conjugate) used the semileptonic decay channel. A limit on the flavour changing cross-section via neutral currents was set at 0.55pb (95% confidence level).
Published: 1999

191. Search for charginos, neutralinos and gravitinos in e+e− interactions at GeV

Author: V. Nomokonov, C. Vollmer, Stanislav Nemecek, N. Pukhaeva, V. Verzi, C. Vander Velde, G. A. Chelkov, Ugo Amaldi, W. De Boer, E. Zevgolatakos, A. W. Borgland, Richard Brenner, P. Abreu, J. Garcia, W. Da Silva, V. Obraztsov, F. Tegenfeldt, P. Gris, Tiziano Camporesi, J. J. Hernandez, J. E. Augustin, S. Cabrera, C. Gaspar, Pierre Juillot, E. Boudinov, M. Verlato, L.N. Gerdyukov, Oxana Smirnova, K. Karafasoulis, I. Gonzalez Caballero, N. Tinti, M. L. Turluer, D. Reid, D. J. Holthuizen, P. J. Holt, N. G. Redaelli, Tord Ekelof, F. Simonetto, P. Delpierre, E. G. Anassontzis, J. P. Engel, P. Bambade, A. Normand, G. C. Zucchelli, M. Berggren, Marco Bozzo, F. Kapusta, M. V. Castillo Gimenez, T. J. V. Bowcock, Christophe Royon, N. Neufeld, B. Loerstad, U. Mjoernmark, Jelena Krstic, Paolo Morettini, K. Stevenson, Y. Belokopytov, T. L. Hessing, G. W. Van Apeldoorn, G. Leder, T. Buran, Markus Elsing, B. Tome, P. Antilogus, O.M. Kouznetsov, G. Orazi, J. G. Loken, P. Beilliere, G. Damgaard, V. Lepeltier, S. Hoorelbeke, Gianni Zumerle, A. Galloni, Paolo Ronchese, A. Kiiskinen, A. G. Frodesen, M. Gaspar, G. Myatt, B. Åsman, M. Siebel, B. Golob, J. H. Cowell, S. O. Holmgren, D. Bertini, P. Poropat, H. T. Phillips, Andromachi Tsirou, Klaus Hamacher, Paolo Checchia, N. J. Kjaer, K. Muenich, Oliver Passon, L. Ventura, A. Miagkov, R. Paiva, Ph. Gavillet, Sandra Amato, Luca Tortora, T. Myklebust, L. S. Vertogradov, V. Gracco, Borut Paul Kerševan, Petar Adzic, R. Jacobsson, S. Todorova, T. Podobnik, S. Gamblin, Winfried Mitaroff, Krzysztof Nawrocki, P. Andersson, V. Lefebure, D. Crennell, Andre Augustinus, P. Herquet, T. Aldeweireld, I. A. Tyapkin, Matteo Pegoraro, Patrick Jarry, G. Barker, G. Rinaudo, J. Salt, Ugo Gasparini, E. C. Katsoufis, G. Gopal, S. Tzamarias, N. I. Zimin, F. Mandl, D. Bertrand, P. Seager, Klaus Moenig, Fabrizio Parodi, R. Contri, Jiri Chudoba, Maarten Boonekamp, M. A. Houlden, S. Marti i Garcia, C. Green, Claire Bourdarios, L. De Paula, I. V. Ajinenko, Maciej Górski, Christine Kourkoumelis, L. Di Ciaccio, Louis Lyons, Paulo J. S. Gonçalves, P. Van Dam, Piotr Zalewski, Corinne Berat, Olga Botner, G. Borisov, E. Falk, N. N. Khovanski, R. Pain, C. Walck, Wolfgang Adam, G. Tristram, S. Squarcia, H. Saarikko, E. Cortina, J. M. Heuser, T. Burgsmueller, U. Mueller, W. K. Van Doninck, F. Richard, R. Reinhardt, P. Roudeau, P. Kubinec, T. Tabarelli, P. Chochula, C. Matteuzzi, J. P. Laugier, G. Smadja, Y. Arnoud, S. Almehed, G. Transtromer, E. I. Rosenberg, R. Chierici, Carmen García, Clara Troncon, J. Van Eldik, F. Hahn, V. Chorowicz, V.A. Uvarov, R. Lopez-Fernandez, R. C. Shellard, Josef Hrubec, Manolis Dris, K. Kurvinen, D. Wicke, J. Libby, Ole Røhne, C. Weiser, M. Nikolenko, M. Trochimczuk, C. Kreuter, M. Pimenta, P. Buschmann, B. Muryn, B. A. Khomenko, O. Solovianov, Guido Barbiellini, J. W. Lamsa, Natale Demaria, R. Mc Kay, H. Rahmani, P. V. Chliapnikov, A. Stocchi, Francesco Navarria, D. Rakoczy, A. Tilquin, Josef Strauss, A. M. Segar, C. Martinez-Rivero, P. Langefeld, M. Bonesini, J. Guy, G. Cosme, Ariella Cattai, S. Fichet, A. Passeri, Alberto Benvenuti, J. N. Jackson, Pawel Jalocha, Barry King, F. Barao, Demetrios Loukas, E. Spiriti, V. Chabaud, M. Espirito Santo, A. Deghorain, E. Ferrer-Ribas, S. Haider, P. B. Renton, S. Stanic, Tim Adye, F. Ledroit, J. Fuster, Jacques Lemonne, Andrea Perrotta, P. Kokkinias, W. Venus, G. Vegni, R. Frühwirth, P. Bruckman, D. Stampfer, J. Timmermans, C. Caso, O. Ullaland, B. Marechal, Marta Calvi, G. Valenti, R. Lauhakangas, F. Fontanelli, J. Palacios, J. Grahl, G. D. Alekseev, J. D. Durand, Mariusz Witek, M. Gunther, H. J. Grimm, Attilio Andreazza, Geoffrey Smith, D. Fassouliotis, H. B. Crawley, Toralf Bernhard Skaali, E. Higon, A. Tonazzo, A. G. Olshevski, O. Klapp, Rupert Leitner, F. Scuri, Wojciech Kucewicz, E. Kriznic, F. Pierre, B. Jean-Marie, Mario Sannino, M. Baubillier, Borge Svane Nielsen, G. Matthiae, S. De Brabandere, U. Schwickerath, V. Canale, D. Gamba, Krzysztof Doroba, Chiara Meroni, Vincent Hedberg, M. A. Bizouard, F. Fulda-Quenzer, R. Keranen, M. Mc Cubbin, B. Franek, I. van Vulpen, H. M. Blom, D. W. Lane, A. Zalewska, Peter Kluit, K. Hultqvist, R. Mc Nulty, Philippe Charpentier, Francisco Matorras, E. Graziani, F. Mazzucato, Rafael Marco, T. Spassov, A. N. Sisakian, A. Maio, G. Ekspong, Danilo Zavrtanik, Alexander Vodopyanov, Y. Sacquin, J. M. Brunet, Vaclav Vrba, H. Foeth, Maria Roberta Monge, T. Allmendinger, G. Voulgaris, M. S. Bilenky, Hans Dijkstra, F. Bianchi, A. Sadovsky, V. Ruhlmann-Kleider, J-C. Marin, B. Erzen, R. Gokieli, R. Muresan, W. T. Meyer, L.J. Carroll, B. Ueberschaer, A. Sheridan, P. N. Ratoff, Gunter Wolf, Sofia Andringa, Mattias Ellert, M. Begalli, J. M. Lopez, P. A. Fischer, L. Bugge, Dimos Sampsonidis, B. Bouquet, J. H. Lopes, U. Parzefall, A. Firestone, Kathy Huet, Valeriy Pozdniakov, R. Alemany, Phillip Allport, A. De Angelis, D. Vilanova, P. Collins, A. J. Camacho Rozas, J. Cuevas Maestro, G. Della Ricca, L. Gorn, P. Rebecchi, X. Moreau, Laurent Mirabito, Stefano Ragazzi, Fabio Cossutti, D. Z. Toet, F. Verbeure, Denis Gelé, Daniel Bloch, H. Palka, Morgan Lethuillier, M. Davenport, Guillelmo Gomez-Ceballos, Ahmimed Ouraou, G. Morton, Paolo Privitera, Theodora Papadopoulou, M. Mazzucato, J. R. Mahon, Igor Boyko, A. Duperrin, R. Orava, C. Mulet-Marquis, T. Lesiak, G. J. Hughes, S. Heising, A. Ferrer, R. Janik, Chiara Mariotti, Cristian Stanescu, P. Branchini, Martijn Mulders, Per Jönsson, I. Lippi, Paul Baillon, Alexander Lincoln Read, H. Schneider, J. H. Wickens, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, Marco Paganoni, Guy Wilkinson, C. Bosio, T. Brenke, J. Yi, M. Battaglia, S. Hahn, Francesca Romana Cavallo, Juergen Thomas, L. Vitale, Martino Margoni, E. Fokitis, Antonios Leisos, D. Radojicic, E. K. Johansson, G. Eigen, I. Gil, Georgios Fanourakis, N. Neumeister, Steinar Stapnes, K. Grzelak, A. Van Lysebetten, Sandor Czellar, N. Vassilopoulos, Manfred Krammer, V. V. Lapin, Allan Hallgren, P. Lutz, W. Bonivento, G. Polok, Antonio Baroncelli, B. Stugu, C. De Clercq, W. J. Murray, Yu. Gouz, V. Malychev, R. Strub, Nikolaos P. Mastroyiannopoulos, M. Gandelman, A. Malek, A. Sokolov, Marcos Dracos, N. Ghodbane, T. G M Malmgren, J. Dolbeau, H. Wahlen, J. Drees, Evangelos Gazis, L. Chaussard, P.S.L. Booth, Luis Peralta, A. Pullia, K. H. Becks, E. Vallazza, Dietrich Liko, Chariclia Petridou, M. A. Winter, A. Petrolini, B. De Lotto, G. Crosetti, Evgueni Vlasov, G. Mc Pherson, H. Herr, L. G. Tkatchev, A. Nygren, Daniel Treille, M. Bigi, J. Ridky, C. Parkes, F. Carena, M. Pernicka, Marek Szczekowski, Jesus Marco, G. Lenzen, J. Mazik, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, M. Feindt, S. Sánchez Navas, P. Negri, P. Ferrari, P. Sponholz, Göran Jarlskog, H. Klein, Ch. Jarlskog, F. Glege, W. D. Apel, K. Osterberg, Ph. Schwemling, O. Yushchenko, E. Piotto, R. Sekulin, Maria Elena Pol, T. Moa, S. Katsanevas, A. Sopczak, D. Y. Bardin, M. Regler, P. Rosinsky, R. Moeller, L. K. Resvanis, Massimo Caccia, Antonio Onofre, A. Markou, L. Simard, L. Leinonen, Tiziano Rovelli, Z. Krumstein, S. Paiano, A. De Min, G. Sajot, U. Flagmeyer, Yu. Sedykh, Anna Lipniacka, Luc Pape, J. Kurowska, C. Joram, R. Barbier, I. Bozovic, R. Sosnowski, F. Naraghi, R. Nicolaidou, J. Fayot, Ernesto Migliore, Alessandra Romero, A. Ruiz, M. A E Schyns, F. J. Harris, F. Terranova, and A. Kinvig
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Supergravity, Supersymmetry, 01 natural sciences, Lower limit, Nuclear physics, Chargino, 0103 physical sciences, Neutralino, Large Electron–Positron Collider, Gravitino, 010306 general physics
Abstract: An update of the searches for charginos and neutralinos is presented, based on a data sample corresponding to the 53.9 pb−1 recorded by the DELPHI detector in 1997, at a centre-of-mass energy of 183 GeV. No evidence for a signal was found. The lower mass limits are 4–5 GeV/c2 higher than those obtained at a centre-of-mass energy of 172 GeV. The (μ,M2) domain excluded by combining the neutralino and chargino searches implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 29.1 GeV/c2 for tanβ≥ 1.
Published: 1999

192. Development of 130nm CMOS Monolithic Active Pixels with In-pixel Signal Processing

Author: R. Cenci, G.-F. Dalla Betta, G. Batignani, D. Gamba, Paola Giannetti, Mario Giorgi, B. Giacobbe, C. Andreoli, E. Paoloni, G. Rizzo, G. Fontana, G. Marchiori, L. Bosisio, G. Giacomini, Lucio Pancheri, Valerio Re, Marco Bruschi, R. Spighi, J. J. Walsh, N. Semprini, Massimo Manghisoni, F. Forti, L. Vitale, G. Calderini, V. Speziali, Gianluca Traversi, Giovanni Verzellesi, Mauro Villa, Mauro Dell'Orso, Fabio Morsani, S. Bettarini, Alessandro Gabrielli, G. Giraudo, Filippo Bosi, Nicola Neri, Lodovico Ratti, P. Mereu, L. Lanceri, Giovanni Soncini, I. Rachevskaia, E. Pozzati, A. Lusiani, Antonio Zoccoli, BERNARD PHLIPS, F. Forti, C. Andreoli, G. Batignani, S. Bettarini, F. Bosi, L. Bosisio, M. Bruschi, G. Calderini, R. Cenci, G.F. Dalla Betta, M. Dell’Orso, G. Fontana, A. Gabrielli, D. Gamba, B. Giacobbe, G. Giacomini, P. Giannetti, M.A. Giorgi, G. Giraudo, L. Lanceri, A. Lusiani, M. Manghisoni, G. Marchiori, P. Mereu, F. Morsani, N. Neri, L. Pancheri, E. Paoloni, E. Pozzati, I. Rachevskaia, L. Ratti, V. Re, G. Rizzo, N. Semprini, G. Soncini, R. Spighi, V. Speziali, G. Traversi, J. Walsh, G. Verzellesi, L. Vitale, M. Villa, and A. Zoccoli
Subjects: Physics, Signal processing, RIVELATORI A PIXEL ATTIVI, MAPS, CMOS, Charged particle tracking, Pixel, business.industry, Preamplifier, Physics::Instrumentation and Detectors, Detector, Electrical engineering, Analog signal processing, Chip, Optoelectronics, business, Digital signal processing
Abstract: We developed monolithic active pixel detectors that exploit the triple well option of CMOS 130nm technology to implement analog and digital signal processing at the pixel level. The charge collecting element is realized using the deep N-well (DNW) and partially overlaps the analog circuit. With this scheme we were able to implement a full in-pixel signal processing chain, composed of a charge preamplifier, shaper, discriminator, and latch. This approach has been validated by a first prototype (APSEL0), and we report here on the extensive measurements performed on the second prototype (APSEL1), containing various single pixel structures with analog readout and an 8×8 matrix of 50 × 50 μm2 pixels with sequential digital readout. For 900 μm2 pixels the equivalent noise charge has been measured to be 40 e−, with a S/N ratio of about 30 for the 55Fe 5.9 keV signal. The matrix readout has been tested up to 30 MHz and the crosstalk between pixels characterized. The threshold dispersion and the noise of the pixels in the matrix have been measured through noise scans. These measurements confirm the viability of the triple well process for MAPS fabrication, and indicate the design improvements for the next prototype chip (APSEL2).
Published: 2006

193. What can be learned from the BaBar Silicon Vertex Tracker running experience

Author: W. S. Lockman, Claudio Campagnari, Matteo Rama, A. Profeti, G. Nesom, Valerio Re, C. Bozzi, J. Kroseberg, A. Perazzo, M. Carpinelli, F. Forti, M. Morganti, S. Curry, L. Vitale, S. Kyre, M. G. Wilson, J. Stoner, D. A. Roberts, S. A. Majewski, Alberto Lusiani, J. W. Berryhill, F. Bucci, Filippo Bosi, Fabio Morsani, Peter Elmer, A. Mihalyi, C. K. Lae, G. Rizzo, M. Bruinsma, P.F. Manfredi, D. Callahan, C. Angelini, P. Spradlin, Nicola Neri, Andrei Gritsan, S. Dittongo, S. Bettarini, M. Ceccanti, D. Kirkby, S. Burke, G. Cibinetto, E. Mandelli, G. Lynch, D. Gamba, Gabriele Simi, A. M. Eisner, H. L. Snoek, B. A. Petersen, C. Cartaro, Wolfgang Walkowiak, Sergio Grancagnolo, S. Dardin, A. J. Edwards, Mario Giorgi, C. Roat, F. Goozen, L. T. Kerth, E. Charles, Fabio Cossutti, Eugenio Paoloni, J. J. Walsh, B. Dahmes, G. Marchiori, Owen Rosser Long, A. Lazzaro, Patricia R. Burchat, P.A. Hart, A. Seiden, G. Batignani, Marcella Bona, J. D. Richman, M. Datta, Wouter Verkerke, G. Della Ricca, T. W. Beck, F. Bianchi, M. Bondioli, V. Lillard, Chunhui Chen, P. Mammini, Natalie A. Roe, F. Palombo, D. N. Brown, Luciano Bosisio, L. Piemontese, S. L. Levy, P.P. Trapani, M. A. Mazur, L. Lanceri, Daniel E. Hale, W. Houlsbergen, G. Calderini, Lodovico Ratti, V., Re, D., Kirkby, M., Bruinsma, S., Curry, J., Berryhill, S., Burke, D., Callahan, C., Campagnari, B., Dahme, D., Hale, P., Hart, S., Kyre, S., Levy, O., Long, M., Mazur, J., Richman, J., Stoner, W., Verkerke, T., Beck, A. M., Eisner, J., Kroseberg, W. S., Lockman, G., Nesom, A., Seiden, P., Spradlin, W., Walkowiak, M., Wilson, C., Bozzi, G., Cibinetto, L., Piemontese, H. L., Snoek, D., Brown, E., Charle, S., Dardin, F., Goozen, L. T., Kerth, A., Gritsan, G., Lynch, N. A., Roe, C., Chen, W., Houlsbergen, C. K., Lae, V., Lillard, D., Robert, A., Lazzaro, F., Palombo, L., Ratti, P. F., Manfredi, E., Mandelli, C., Angelini, G., Batignani, S., Bettarini, M., Bondioli, F., Bosi, F., Bucci, G., Calderini, M., Carpinelli, M., Ceccanti, F., Forti, M. A., Giorgi, A., Lusiani, P., Mammini, G., Marchiori, M., Morganti, F., Morsani, N., Neri, E., Paoloni, A., Profeti, M., Rama, G., Rizzo, G., Simi, J., Walsh, P., Elmer, A., Perazzo, P., Burchat, A. J., Edward, S., Majewski, B. A., Petersen, C., Roat, M., Bona, F., Bianchi, D., Gamba, P., Trapani, Bosisio, Luciano, C., Cartaro, F., Cossutti, DELLA RICCA, Giuseppe, S., Dittongo, S., Grancagnolo, Lanceri, Livio, Vitale, Lorenzo, M., Datta, A., Mihalyi, Re, V, Kirkby, D, Bruinsma, M, Curry, S, Berryhill, J, Burke, S, Callahan, D, Campagnari, C, Dahmes, B, Hale, D, Hart, P, Kyre, S, Levy, S, Long, O, Mazur, M, Richman, J, Stoner, J, Verkerke, W, Beek, T, Eisner, A, Kroseberg, J, Lockman, W, Nesom, G, Seiden, A, Spradlin, P, Walkowiak, W, Wilson, M, Bozzi, C, Cibinetto, G, Piemontese, L, Snoek, H, Brown, D, Charles, E, Dardin, S, Goozen, F, Kerth, L, Gritsan, A, Lynch, G, Roe, N, Chen, C, Houlsbergen, W, Lae, C, Lillard, V, Roberts, D, Lazzaro, A, Palombo, F, Ratti, L, Manfredi, F, Mandelli, E, Angelini, C, Batignani, G, Bettarini, S, Bondioli, M, Bosi, F, Bucci, F, Calderini, G, Carpinelli, M, Ceccanti, M, Forti, F, Giorgi, M, Lusiani, A, Mammini, P, Marchiori, G, Morganti, M, Morsani, F, Neri, N, Paoloni, E, Profeti, A, Rama, M, Rizzo, G, Simi, G, Walsh, J, Elmer, P, Perazzo, A, Burchat, P, Edwards, A, Majewski, S, Petersen, B, Roat, C, Bona, M, Bianchi, F, Gamba, D, Trapani, P, Bosislo, L, Cartaro, C, Cossutti, F, Della Ricca, G, Dittongo, S, Grancagnolo, S, Lanceri, L, Vitale, L, Datta, M, and Mihalyi, A
Subjects: Nuclear and High Energy Physics, Silicon detector, Radiation monitoring, Silicon, Physics::Instrumentation and Detectors, Semiconductor materials, BABAR, BaBar experiment, chemistry.chemical_element, Settore ING-INF/01 - Elettronica, PARTICLE PHYSICS, PEP2, Radiation damage, TRACKER, Electronic engineering, B meson, Silicon detectors, strip detectors, tracking, radiation damage, Strip detector, Instrumentation, Silicon microstrip detectors, Physics, Tracking, Detector, MICROVERTEX DETECTOR, Silicon Detectors, Vertex (geometry), Design phase, chemistry, High Energy Physics::Experiment
Abstract: The Silicon Vertex Tracker (SVT) of the BABAR experiment at SLAC is a crucial tool to measure with precision the decay position of B mesons produced in the PEP-II electron–positron collisions. It is structured in five layers made of double-sided, AC coupled silicon microstrip sensors. In this paper, a review of some of the technical solutions chosen in the detector design phase is presented. In particular, we focus here on those elements which turned out to be sources of problems during the installation and the first few years of operation; the solutions adopted to solve the problems are presented together with recommendations and proposals for alternate future designs.
Published: 2005

194. Measurement of the e+e−→γγ(γ) cross section at the LEP energies

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, P. Andersson, A. Andreazza, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ch. Cerruti, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, M. Colomer, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, B. Dalmagne, G. Damgaard, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, A. Duperrin, J-D. Durand, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Fenyuk, P. Ferrari, A. Ferrer, S. Fichet, A. Firestone, P.-A. Fischer, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, S. Heising, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, D. Knoblauch, P. Kokkinias, A. Konopliannikov, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, J. Krstic, Z. Krumstein, P. Kubinec, W. Kucewicz, K. Kurvinen, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, K. Muenich, M. Mulders, C. Mulet-Marquis, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, M. Nikolenko, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, M. Pegoraro, L. Peralta, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, D. Rakoczy, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, R. Silvestre, L. Simard, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Smadja, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, A. Van Lysebetten, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, T. Wlodek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Upper and lower bounds, Lower limit, Gamma gamma, Nuclear physics, Excited state, 0103 physical sciences, Cutoff, 010306 general physics
Abstract: The total and the differential cross sections for the reaction e+e− → γγ(γ) have been measured with the DELPHI detector at LEP using an integrated luminosity of 36.9 pb−1. The results agree with the QED predictions and consequently there is no evidence for non-standard channels with the same experimental signature. The lower limits obtained on the QED cutoff parameters are Λ+ > 143 GeV and Λ− > 120 GeV, and the lower bound on the mass of an excited electron with an effective coupling constant λγ = 1 is 132 GeV/c2. Upper limits on the branching ratios for the decays Z0 → γγ, Z0 → π0γ, Z0 → ηγ and Z0 → γγγ have been determined to be 5.5 × 10−5, 5.5 × 10−5, 8.0 × 10−5, and 1.7 × 10−5 respectively. All the limits are at the 95% confidence level.
Published: 1998

195. Diagnostic potential of Mab‐based ELISAs for antibodies to non‐structural proteins of foot‐and‐mouth disease virus to differentiate infection from vaccination

Author: Emiliana Brocchi, A Berlinzani, D Gamba, M I De Diego, and F De Simone
Subjects: Antiserum, General Veterinary, biology, medicine.drug_class, medicine.disease_cause, Monoclonal antibody, biology.organism_classification, Virology, Vaccination, Direct binding, Immunology, biology.protein, medicine, Antibody, Foot-and-mouth disease virus, Escherichia coli, Mass screening
Abstract: This paper summarises the development of monoclonal antibody (Mab)-based immunoassays measuring antibodies to non-structural proteins of FMDV to differentiate infection from vaccination. Of the three non-structural proteins 2C, 3C and 3ABC evaluated in this study, the polypeptide 3ABC was the most immunogenic. Three ELISAs for the detection of antibodies to 3ABC were developed. Two assays rely on the competition of test sera against either a anti-3A Mab or against antisera to 3ABC raised in rabbits and guinea-pigs. The third, 3ABC Mat-ELISA, based on the direct binding of antibodies to the 3ABC trapped by a specific Mab, provided the best combination of specificity and sensitivity. The 3ABC Mat-ELISA was extensively validated for cattle, either in experimental and in field conditions, showing specificity of 99% in vaccinated and in naive cattle and the capacity to detect silent infections in FMD-vaccinated populations. The test showed similar specificity and sensitivity in experimentally vaccinated and infected sheep.
Published: 1998

196. The BaBar Silicon Vertex Tracker: performance and radiation damage studies

Author: F. Sandrelli, S. Burke, E. Mandelli, M. G. Wilson, D. A. Roberts, A. M. Eisner, T. Pulliam, G. Rizzo, G. Vuagnin, C. H. Cheng, Matteo Rama, Valerio Re, Mauro Citterio, D. Gagliardi, Marcello Giorgi, A. Profeti, Alberto Lusiani, M. Carpinelli, M. Morganti, J. Stoner, Peter Elmer, J. W. Berryhill, M. Bruinsma, J. J. Walsh, L. T. Kerth, G. Calderini, W. S. Lockman, D. Callahan, I. Rashevskaia, T. I. Meyer, A. R. Clark, Lodovico Ratti, Andrei Gritsan, M. Grothe, T. W. Beck, C. Borean, F. Bianchi, Claudio Campagnari, F. Palombo, Marcella Bona, G. Batignani, B. A. Petersen, J. D. Richman, F. Goozen, F. Bucci, D. Kirkby, Daniel E. Hale, S. Dittongo, A. Perazzo, L. Vitale, S. Kyre, M. Ceccanti, R. Liu, D. N. Brown, J. Beringer, F. Forti, A. Mihalyi, Wolfgang Walkowiak, E. Paoloni, P. Spradlin, Filippo Bosi, D. Gamba, C. Roat, P.A. Hart, Fabio Morsani, G. Marchiori, G. Zizka, Gabriele Simi, G. Della Ricca, B. Dahmes, G. Lynch, E. Charles, E. Brenna, Corrado Angelini, C. Bozzi, S. L. Levy, P.P. Trapani, P.F. Manfredi, S. Bettarini, S. Dardin, M. A. Mazur, A. J. Edwards, V. Lillard, L. Lanceri, P. Mammini, Natalie A. Roe, Patricia R. Burchat, Luciano Bosisio, L. Piemontese, Owen Rosser Long, A. Seiden, M. Datta, Wouter Verkerke, Francesco Lanni, A. B. Breon, Nicola Neri, M. Bondioli, Re, V, Kirkby, D, Bruinsma, M, Berryhill, J, Burke, S, Callahan, D, Campagnari, C, Dahmes, B, Hale, D, Hart, P, Kyre, S, Levy, S, Long, O, Mazur, M, Richman, J, Stoner, J, Verkerke, W, Beringer, J, Beek, T, Eisner, A, Grothe, M, Lockman, W, Pulliam, T, Seiden, A, Spradlin, P, Walkowiak, W, Wilson, M, Borean, C, Bozzi, C, Piemontese, L, Breen, A, Brown, D, Charles, E, Clark, A, Dardin, S, Goozen, F, Kertb, L, Gritsan, A, Lynch, G, Perazzo, A, Roe, N, Zizka, G, Lillard, V, Roberts, D, Brenna, E, Citterio, M, Lanni, F, Palombo, F, Ratti, L, Manfredi, P, Mandelli, E, Angelini, C, Batignani, G, Bettarini, S, Bondioli, M, Bosi, F, Bucci, F, Calderini, G, Carpinelli, M, Ceccanti, M, Forti, F, Gagliardi, D, Giorgi, M, Lusiani, A, Mammini, P, Marchiori, G, Morganti, M, Morsani, F, Neri, N, Paoloni, E, Profeti, A, Rama, M, Rizzo, G, Sandrelli, F, Simi, G, Walsh, J, Elmer, P, Burchat, P, Cheng, C, Edwards, A, Meyer, T, Petersen, B, Roat, C, Bona, M, Bianchi, F, Gamba, D, Trapani, P, Bosisio, L, Della Ricca, G, Dittongo, S, Lanceri, L, Rashevskaia, I, Vitale, L, Vuagnin, G, Datta, M, Liu, R, Mihalyi, A, V., Re, D., Kirkby, M., Bruinsma, J., Berryhill, S., Burke, D., Callahan, C., Campagnari, B., Dahme, D., Hale, P., Hart, S., Kyre, S., Levy, O., Long, M., Mazur, J., Richman, J., Stoner, W., Verkerke, J., Beringer, T., Beck, A. M., Eisner, M., Grothe, W. S., Lockman, T., Pulliam, A., Seiden, P., Spradlin, W., Walkowiak, M., Wilson, C., Borean, C., Bozzi, L., Piemontese, A. B., Breon, D., Brown, E., Charle, A. R., Clark, S., Dardin, F., Goozen, L. T., Kerth, A., Gritsan, G., Lynch, A., Perazzo, N. A., Roe, G., Zizka, V., Lillard, D., Robert, E., Brenna, M., Citterio, F., Lanni, F., Palombo, L., Ratti, P. F., Manfredi, E., Mandelli, C., Angelini, G., Batignani, S., Bettarini, M., Bondioli, F., Bosi, F., Bucci, G., Calderini, M., Carpinelli, M., Ceccanti, F., Forti, D., Gagliardi, M. A., Giorgi, A., Lusiani, P., Mammini, G., Marchiori, M., Morganti, F., Morsani, N., Neri, E., Paoloni, A., Profeti, M., Rama, G., Rizzo, F., Sandrelli, G., Simi, J., Walsh, P., Elmer, P., Burchat, C., Cheng, A. J., Edward, T. I., Meyer, B. A., Petersen, C., Roat, M., Bona, F., Bianchi, D., Gamba, P., Trapani, Bosisio, Luciano, DELLA RICCA, Giuseppe, S., Dittongo, Lanceri, Livio, I., Rashevskaia, Vitale, Lorenzo, G., Vuagnin, M., Datta, R., Liu, and A., Mihalyi
Subjects: Electron beam, Positron beam, Nuclear and High Energy Physics, Vertex (computer graphics), Silicon, Positron, BABAR, Silicon sensor, chemistry.chemical_element, Resonance, PARTICLE PHYSICS, PEP2, Settore ING-INF/01 - Elettronica, Linear particle accelerator, Linear accelerator, law.invention, Nuclear physics, Radiation damage, TRACKER, law, particle physics, Instrumentation, Absorbed Radiation Dose, Radiation hardening, Physics, silicon, Particle accelerator, Microstrip device, MICROVERTEX DETECTOR, Silicon vertex tracker (SVT), chemistry, Drift chamber, Microstrip sensor, Particle detector, BaBar tracking system, Trajectorie, Storage ring
Abstract: The BaBar Silicon Vertex Tracker is a five layers, double sided AC-coupled silicon microstrip detector operating on the PEP-II storage ring at the Stanford Linear Accelerator Center. The performance of the SVT after 4 years of running is described. Results from radiation hardness tests are presented and the implications of the absorbed radiation dose on the SVT lifetime are discussed.
Published: 2004

197. Sensor performance of the BaBar Silicon Vertex Tracker after 4 years of data taking

Author: G. Della Ricca, C. H. Cheng, J. J. Walsh, E. Charles, Wolfgang Walkowiak, R. Liu, E. Brenna, C. Roat, P.A. Hart, Claudio Campagnari, Corrado Angelini, A. M. Eisner, G. Lynch, C. Borean, F. Forti, S. Bettarini, C. Bozzi, T. Pulliam, F. Bucci, J. Stoner, Marcella Bona, M. Bondioli, L. Lanceri, J. D. Richman, J. W. Berryhill, Fabio Morsani, F. Sandrelli, Lodovico Ratti, Daniel E. Hale, D. Kirkby, Francesco Lanni, F. Palombo, Owen Rosser Long, A. Seiden, A. B. Breon, Nicola Neri, Peter Elmer, P.F. Manfredi, M. Datta, M. Carpinelli, M. Morganti, M. Bruinsma, G. Zizka, D. N. Brown, Wouter Verkerke, S. Dardin, A. Perazzo, A. J. Edwards, I. Rashevskaia, S. Dittongo, Gabriele Simi, L. Vitale, S. Kyre, G. Batignani, G. Calderini, D. Callahan, M. Ceccanti, Andrei Gritsan, J. Beringer, W. S. Lockman, B. Dahmes, Patricia R. Burchat, G. Rizzo, G. Vuagnin, Filippo Bosi, S. Burke, Matteo Rama, F. Bianchi, Marcello Giorgi, A. Profeti, M. G. Wilson, F. Goozen, B. A. Petersen, D. A. Roberts, Valerio Re, D. Gamba, E. Paoloni, G. Marchiori, E. Mandelli, T. I. Meyer, Mauro Citterio, D. Gagliardi, M. Grothe, L. T. Kerth, Alberto Lusiani, A. R. Clark, S. L. Levy, P.P. Trapani, M. A. Mazur, Luciano Bosisio, L. Piemontese, V. Lillard, P. Mammini, Natalie A. Roe, V., Re, D., Kirkby, M., Bruinsma, J., Berryhill, S., Burke, D., Callahan, C., Campagnari, B., Dahme, D., Hale, P., Hart, S., Kyre, S., Levy, O., Long, M., Mazur, J., Richman, J., Stoner, W., Verkerke, J., Beringer, A. M., Eisner, M., Grothe, W. S., Lockman, T., Pulliam, A., Seiden, W., Walkowiak, M., Wilson, C., Borean, C., Bozzi, L., Piemontese, A. B., Breon, D., Brown, E., Charle, A. R., Clark, S., Dardin, F., Goozen, L. T., Kerth, A., Gritsan, G., Lynch, A., Perazzo, N. A., Roe, G., Zizka, V., Lillard, D., Robert, E., Brenna, M., Citterio, F., Lanni, F., Palombo, L., Ratti, P. F., Manfredi, E., Mandelli, C., Angelini, G., Batignani, S., Bettarini, M., Bondioli, F., Bosi, F., Bucci, G., Calderini, M., Carpinelli, M., Ceccanti, F., Forti, D., Gagliardi, M. A., Giorgi, A., Lusiani, P., Mammini, G., Marchiori, M., Morganti, F., Morsani, N., Neri, E., Paoloni, A., Profeti, M., Rama, G., Rizzo, F., Sandrelli, G., Simi, J., Walsh, P., Elmer, P., Burchat, C., Cheng, T. I., Meyer, B. A., Petersen, A. J., Edward, C., Roat, M., Bona, F., Bianchi, D., Gamba, P., Trapani, Bosisio, Luciano, DELLA RICCA, Giuseppe, S., Dittongo, Lanceri, Livio, I., Rashevskaia, Vitale, Lorenzo, G., Vuagnin, M., Datta, R., Liu, Re, V, Kirkby, D, Bruinsma, M, Berryhill, J, Burke, S, Callahan, D, Campagnari, C, Dahmes, B, Hale, D, Hart, P, Kyre, S, Levy, S, Long, O, Mazur, M, Richman, J, Stoner, J, Verkerke, W, Beringer, J, Eisner, A, Grothe, M, Lockman, W, Pulliam, T, Seiden, A, Walkowiak, W, Wilson, M, Borean, C, Bozzi, C, Piemontese, L, Breon, A, Brown, D, Charles, E, Clark, A, Dardin, S, Goozen, F, Kerth, L, Gritsan, A, Lynch, G, Perazzo, A, Roe, N, Zizka, G, Lillard, V, Roberts, D, Brenna, E, Citterio, M, Lanni, F, Palombo, F, Ratti, L, Manfredi, P, Mandelli, E, Angelini, C, Batignani, G, Bettarini, S, Bondioli, M, Bosi, F, Bucci, F, Calderini, G, Carpinelli, M, Ceccanti, M, Forti, F, Gagliardi, D, Giorgi, M, Lusiani, A, Mammini, P, Marchiori, G, Morganti, M, Morsani, F, Neri, N, Paoloni, E, Profeti, A, Rama, M, Rizzo, G, Sandrelli, F, Simi, G, Walsh, J, Elmer, P, Burchat, P, Cheng, C, Meyer, T, Petersen, B, Edwards, A, Roat, C, Bona, M, Bianchi, F, Gamba, D, Trapani, P, Bosisio, L, Della Ricca, G, Dittongo, S, Lanceri, L, Rashevskaia, I, Vitale, L, Vuagnin, G, Datta, M, and Liu, R
Subjects: Physics, Nuclear and High Energy Physics, Vertex (computer graphics), Radiation, Silicon, business.industry, BABAR, Detector, Electrical engineering, chemistry.chemical_element, Chip, PARTICLE PHYSICS, PEP2, B-factory, Vertex, Radiation level, chemistry, Limit (music), Factory (object-oriented programming), business, Instrumentation
Abstract: The Silicon Vertex Tracker (SVT) of the B a B ar experiment at the PEP-II asymmetric B factory is a crucial element of the B a B ar physics program. The SVT is a five layer device with double-sided silicon strip detectors and a custom readout chip based on a time-over-threshold circuit. The SVT is fully operational since the installation in the experiment in 1999. We briefly review the detector performance after more than 3 years of data taking in factory mode. The high-luminosity running of PEP-II through the end of the decade will increase the radiation level in the SVT above its design limit. Radiation issues will be reviewed and results from radiation tests of the various detector components will be presented. We finally discuss the outlook for the long-term running of the SVT.
Published: 2004

198. Search for Bs0- oscillations

Author: W Adam, T Adye, I Ajinenko, G.D Alekseev, R Alemany, P.P Allport, S Almehed, U Amaldi, S Amato, P Andersson, A Andreazza, P Antilogus, W-D Apel, Y Arnoud, B Åsman, J-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, M Barbi, D.Y Bardin, G Barker, A Baroncelli, O Barring, M.J Bates, M Battaglia, M Baubillier, J Baudot, K-H Becks, M Begalli, P Beilliere, Yu Belokopytov, K Belous, A.C Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, M.S Bilenky, P Billoir, M-A Bizouard, D Bloch, M Blume, M Bonesini, W Bonivento, M Boonekamp, P.S.L Booth, A.W Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, T.J.V Bowcock, I Bozovic, M Bozzo, P Branchini, K.D Brand, T Brenke, R.A Brenner, R.C.A Brown, P Bruckman, J-M Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, A.J.Camacho Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, M.V.Castillo Gimenez, A Cattai, F.R Cavallo, V Chabaud, M Chapkin, Ph Charpentier, L Chaussard, P Checchia, G.A Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, V Cindro, P Collins, M Colomer, R Contri, E Cortina, G Cosme, F Cossutti, J-H Cowell, H.B Crawley, D Crennell, G Crosetti, J.Cuevas Maestro, S Czellar, J Dahm, B Dalmagne, G Damgaard, P.D Dauncey, M Davenport, W Da Silva, A Deghorain, G.Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, C De La Vaissiere, B De Lotto, A De Min, L De Paula, H Dijkstra, L Di Ciaccio, A Di Diodato, A Djannati, J Dolbeau, K Doroba, M Dracos, J Drees, K.-A Drees, M Dris, J-D Durand, D Edsall, R Ehret, G Eigen, T Ekelof, G Ekspong, M Elsing, J-P Engel, B Erzen, M.Espirito Santo, E Falk, G Fanourakis, D Fassouliotis, M Feindt, P Ferrari, A Ferrer, S Fichet, T.A Filippas, A Firestone, P.-A Fischer, H Foeth, E Fokitis, F Fontanelli, F Formenti, B Franek, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, D Gele, J-P Gerber, L Gerdyukov, R Gokieli, B Golob, P Goncalves, G Gopal, L Gorn, M Gorski, Yu Gouz, V Gracco, E Graziani, C Green, A Grefrath, P Gris, G Grosdidier, K Grzelak, M Gunther, J Guy, F Hahn, S Hahn, Z Hajduk, A Hallgren, K Hamacher, F.J Harris, V Hedberg, R Henriques, J.J Hernandez, P Herquet, H Herr, T.L Hessing, J.-M Heuser, E Higon, S-O Holmgren, P.J Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, J.N Jackson, R Jacobsson, P Jalocha, R Janik, Ch Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, L Jonsson, P Jonsson, C Joram, P Juillot, M Kaiser, F Kapusta, K Karafasoulis, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, Yu Khokhlov, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, O Klapp, H Klein, P Kluit, D Knoblauch, B Koene, P Kokkinias, M Koratzinos, K Korcyl, V Kostioukhine, C Kourkoumelis, O Kouznetsov, M Krammer, C Kreuter, I Kronkvist, Z Krumstein, W Krupinski, P Kubinec, W Kucewicz, K Kurvinen, C Lacasta, I Laktineh, J.W Lamsa, L Lanceri, D.W Lane, P Langefeld, J-P Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, C.K Legan, A Leisos, R Leitner, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, M Lethuillier, J Libby, D Liko, A Lipniacka, I Lippi, B Loerstad, J.G Loken, J.M Lopez, D Loukas, P Lutz, L Lyons, J MacNaughton, G Maehlum, J.R Mahon, A Maio, T.G.M Malmgren, V Malychev, F Mandl, J Marco, R Marco, B Marechal, M Margoni, J-C Marin, C Mariotti, A Markou, C Martinez-Rivero, F Martinez-Vidal, S Marti i Garcia, J Masik, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, G Mc Pherson, J Medbo, M Merk, C Meroni, S Meyer, W.T Meyer, M Michelotto, E Migliore, L Mirabito, W.A Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, K Muenich, M Mulders, L.M Mundim, W.J Murray, B Muryn, G Myatt, T Myklebust, F Naraghi, F.L Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, M Nieuwenhuizen, V Nikolaenko, M Nikolenko, P Niss, A Nomerotski, A Normand, A Nygren, W Oberschulte-Beckmann, V Obraztsov, A.G Olshevski, A Onofre, R Orava, G Orazi, S Ortuno, K Osterberg, A Ouraou, P Paganini, M Paganoni, S Paiano, R Pain, H Palka, Th.D Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, U Parzefall, A Passeri, M Pegoraro, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, H.T Phillips, G Piana, F Pierre, M Pimenta, E Piotto, T Podobnik, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, R Reinhardt, P.B Renton, L.K Resvanis, F Richard, J Ridky, G Rinaudo, O Rohne, A Romero, P Ronchese, L Roos, E.I Rosenberg, P Rosinsky, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, H Saarikko, Y Sacquin, A Sadovsky, G Sajot, J Salt, M Sannino, H Schneider, U Schwickerath, M.A.E Schyns, G Sciolla, F Scuri, P Seager, Y Sedykh, A.M Segar, A Seitz, R Sekulin, L Serbelloni, R.C Shellard, A Sheridan, I Siccama, P Siegrist, R Silvestre, F Simonetto, A.N Sisakian, T.B Skaali, G Smadja, N Smirnov, O Smirnova, G.R Smith, O Solovianov, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, P Sponholz, S Squarcia, D Stampfer, C Stanescu, S Stanic, S Stapnes, I Stavitski, K Stevenson, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, J.P Tavernet, O Tchikilev, F Tegenfeldt, F Terranova, J Thomas, A Tilquin, J Timmermans, L.G Tkatchev, T Todorov, S Todorova, D.Z Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, G Tristram, A Trombini, C Troncon, A Tsirou, M-L Turluer, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, G.W Van Apeldoorn, P Van Dam, J Van Eldik, A Van Lysebetten, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, V Vrba, H Wahlen, C Walck, F Waldner, C Weiser, A.M Wetherell, D Wicke, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, M Witek, T Wlodek, J Yi, K Yip, O Yushchenko, F Zach, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, N.I Zimin, G.C Zucchelli, and G Zumerle
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Bar (music), Large Electron–Positron Collider
Published: 1997

199. Gamma Nailing of Pertrochanteric and Subtrochanteric Fractures: Clinical Results of a Series of 63 Consecutive Cases

Author: D. Gamba and F. Chevalley
Subjects: Adult, Male, medicine.medical_specialty, Radiography, Bone Nails, Fracture fixation, Humans, Medicine, Orthopedics and Sports Medicine, Femur, Prospective Studies, Range of Motion, Articular, Prospective cohort study, Aged, Fracture Healing, Osteosynthesis, Hip Fractures, business.industry, General Medicine, Middle Aged, Prognosis, Fracture Fixation, Intramedullary, Surgery, medicine.anatomical_structure, Orthopedic surgery, Nail (anatomy), Female, business, Range of motion, Follow-Up Studies
Abstract: Objective To analyze the use of the gamma nail in the treatment of pertrochanteric fractures. Design Prospective. Setting University. Patients Sixty-three fractures in sixty-three patients treated with gamma nails. Results Forty-five of the sixty-three patients (71 percent) were followed until the end of treatment, for an average follow-up period of 7.2 months. Of the remaining eighteen, eleven died and seven were lost to follow-up. Reduction was classified as good in thirty-eight cases, acceptable in nineteen, and unsatisfactory in six. Conclusion The findings from this series indicate that, compared with other methods, the gamma nail enables the surgeon to treat more types of hip fractures with a less invasive technique and achieve equal or better results.
Published: 1997

200. Search for stable heavy charged particles in e+e− collisions at , 161 and 172 GeV

Author: P. Abreu, W. Adam, T. Adye, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, M. Barbi, G. Barbiellini, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, M-A. Bizouard, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, P. Kokkinias, A. Konopliannikov, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, T. Podobnik, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, I. Stavitski, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, T. Wlodek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Time projection chamber, 010308 nuclear & particles physics, Electron–positron annihilation, Supersymmetry, 7. Clean energy, 01 natural sciences, Particle identification, Charged particle, Ring-imaging Cherenkov detector, Standard Model, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: A search for stable or long-lived heavy charged particles in e+e− interactions at energies of 130–136, 161 and 172 GeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge ±e and View the MathML source particles in the range of 0.4–2.3 pb for masses from 45 to 84 GeV/c2. Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c2 for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c2 can be excluded at 95% confidence level.
Published: 1997

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