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286 results on '"S. Segler"'

4. Generative Active Learning for the Search of Small-molecule Protein Binders.

Author

Maksym Korablyov, Cheng-Hao Liu, Moksh Jain, Almer M. van der Sloot, Eric Jolicoeur, Edward Ruediger, Andrei Cristian Nica, Emmanuel Bengio, Kostiantyn Lapchevskyi, Daniel St-Cyr, Doris Alexandra Schuetz, Victor Ion Butoi, Jarrid Rector-Brooks, Simon Blackburn, Leo Feng, Hadi Nekoei, Sai Krishna Gottipati, Priyesh Vijayan, Prateek Gupta, Ladislav Rampásek, Sasikanth Avancha, Pierre-Luc Bacon, William L. Hamilton, Brooks Paige, Sanchit Misra, Stanislaw Kamil Jastrzebski, Bharat Kaul, Doina Precup, José Miguel Hernández-Lobato, Marwin H. S. Segler, Michael M. Bronstein, Anne Marinier, Mike Tyers, and Yoshua Bengio

Published
2024
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25. Generating Focused Molecule Libraries for Drug Discovery with Recurrent Neural Networks

Author

Marwin H. S. Segler, Thierry Kogej, Christian Tyrchan, and Mark P. Waller

Subjects
Chemistry, QD1-999
Abstract

In de novo drug design, computational strategies are used to generate novel molecules with good affinity to the desired biological target. In this work, we show that recurrent neural networks can be trained as generative models for molecular structures, similar to statistical language models in natural language processing. We demonstrate that the properties of the generated molecules correlate very well with the properties of the molecules used to train the model. In order to enrich libraries with molecules active toward a given biological target, we propose to fine-tune the model with small sets of molecules, which are known to be active against that target. Against Staphylococcus aureus, the model reproduced 14% of 6051 hold-out test molecules that medicinal chemists designed, whereas against Plasmodium falciparum (Malaria), it reproduced 28% of 1240 test molecules. When coupled with a scoring function, our model can perform the complete de novo drug design cycle to generate large sets of novel molecules for drug discovery.

Published
2017
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27. Predicting Electron Paths.

Author

John Bradshaw, Matt J. Kusner, Brooks Paige, Marwin H. S. Segler, and José Miguel Hernández-Lobato

Published
2018

32. Machine learning the ropes: principles, applications and directions in synthetic chemistry

Author

Felix Strieth-Kalthoff, Frank Glorius, Frederik Sandfort, and Marwin H. S. Segler

Subjects
Workflow, Property (programming), Computer science, business.industry, Perspective (graphical), Context (language use), General Chemistry, Artificial intelligence, Machine learning, computer.software_genre, business, computer, Organic molecules
Abstract

Machine learning (ML) has emerged as a general, problem-solving paradigm with many applications in computer vision, natural language processing, digital safety, or medicine. By recognizing complex patterns in data, ML bears the potential to modernise the way how many chemical challenges are approached. In this review, an introduction to ML is given from the perspective of synthetic chemistry: starting from the fundamentals regarding algorithms and best-practice workflows, the review covers different applications of machine learning in synthesis planning, property prediction, molecular design, and reactivity prediction. In particular, different approaches of representing and utilizing organic molecules will be discussed - providing synthetic chemists both with the understanding and the tools required to apply machine learning in the context of their research, and pointers for further studying.

Published
2020
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33. GuacaMol: Benchmarking Models for de Novo Molecular Design

Author

Marco Fiscato, Alain C. Vaucher, Nathan Brown, and Marwin H. S. Segler

Subjects
Models, Molecular, FOS: Computer and information sciences, Computer Science - Machine Learning, Computer science, General Chemical Engineering, media_common.quotation_subject, Quantitative Structure-Activity Relationship, FOS: Physical sciences, Fidelity, Library and Information Sciences, Machine learning, computer.software_genre, Quantitative Biology - Quantitative Methods, 01 natural sciences, Machine Learning (cs.LG), Deep Learning, Isomerism, Physics - Chemical Physics, 0103 physical sciences, Quantitative Methods (q-bio.QM), media_common, computer.programming_language, Chemical Physics (physics.chem-ph), Molecular Structure, 010304 chemical physics, Artificial neural network, business.industry, Suite, Deep learning, Biomolecules (q-bio.BM), General Chemistry, Benchmarking, Python (programming language), Chemical space, 0104 chemical sciences, Computer Science Applications, 010404 medicinal & biomolecular chemistry, Pharmaceutical Preparations, Quantitative Biology - Biomolecules, Drug Design, FOS: Biological sciences, Benchmark (computing), Artificial intelligence, business, Monte Carlo Method, computer
Abstract

De novo design seeks to generate molecules with required property profiles by virtual design-make-test cycles. With the emergence of deep learning and neural generative models in many application areas, models for molecular design based on neural networks appeared recently and show promising results. However, the new models have not been profiled on consistent tasks, and comparative studies to well-established algorithms have only seldom been performed. To standardize the assessment of both classical and neural models for de novo molecular design, we propose an evaluation framework, GuacaMol, based on a suite of standardized benchmarks. The benchmark tasks encompass measuring the fidelity of the models to reproduce the property distribution of the training sets, the ability to generate novel molecules, the exploration and exploitation of chemical space, and a variety of single and multiobjective optimization tasks. The benchmarking open-source Python code and a leaderboard can be found on https://benevolent.ai/guacamol .

Published
2019
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34. Generating Focused Molecule Libraries for Drug Discovery with Recurrent Neural Networks

Author

Thierry Kogej, Mark P. Waller, Christian Tyrchan, and Marwin H. S. Segler

Subjects
0301 basic medicine, Drug discovery, Computer science, General Chemical Engineering, General Chemistry, Computational biology, Bioinformatics, lcsh:Chemistry, 03 medical and health sciences, 030104 developmental biology, Recurrent neural network, lcsh:QD1-999, Biological target, Molecule, Language model, Design cycle, Function (biology), Research Article
Abstract

In de novo drug design, computational strategies are used to generate novel molecules with good affinity to the desired biological target. In this work, we show that recurrent neural networks can be trained as generative models for molecular structures, similar to statistical language models in natural language processing. We demonstrate that the properties of the generated molecules correlate very well with the properties of the molecules used to train the model. In order to enrich libraries with molecules active toward a given biological target, we propose to fine-tune the model with small sets of molecules, which are known to be active against that target. Against Staphylococcus aureus, the model reproduced 14% of 6051 hold-out test molecules that medicinal chemists designed, whereas against Plasmodium falciparum (Malaria), it reproduced 28% of 1240 test molecules. When coupled with a scoring function, our model can perform the complete de novo drug design cycle to generate large sets of novel molecules for drug discovery., Using artificial neural networks, computers can learn to generate molecules with desired target properties. This can aid in the creative process of drug design.

Published
2017

35. Modelling Chemical Reasoning to Predict and Invent Reactions

Author

Marwin H. S. Segler and Mark P. Waller

Subjects
Theoretical computer science, 010405 organic chemistry, Chemistry, Organic Chemistry, Binary number, General Chemistry, 010402 general chemistry, computer.software_genre, 01 natural sciences, Chemical reaction, Local structure, Catalysis, Expert system, 0104 chemical sciences, Time frame, Knowledge graph, Graph (abstract data type), computer
Abstract

The ability to reason beyond established knowledge allows organic chemists to solve synthetic problems and invent novel transformations. Herein, we propose a model that mimics chemical reasoning, and formalises reaction prediction as finding missing links in a knowledge graph. We have constructed a knowledge graph containing 14.4 million molecules and 8.2 million binary reactions, which represents the bulk of all chemical reactions ever published in the scientific literature. Our model outperforms a rule-based expert system in the reaction prediction task for 180 000 randomly selected binary reactions. The data-driven model generalises even beyond known reaction types, and is thus capable of effectively (re-)discovering novel transformations (even including transition metal-catalysed reactions). Our model enables computers to infer hypotheses about reactivity and reactions by only considering the intrinsic local structure of the graph and because each single reaction prediction is typically achieved in a sub-second time frame, the model can be used as a high-throughput generator of reaction hypotheses for reaction discovery.

Published
2017
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36. Neural-Symbolic Machine Learning for Retrosynthesis and Reaction Prediction

Author

Mark P. Waller and Marwin H. S. Segler

Subjects
010405 organic chemistry, business.industry, Chemistry, Organic Chemistry, Context (language use), General Chemistry, 010402 general chemistry, Machine learning, computer.software_genre, 01 natural sciences, Catalysis, Expert system, 0104 chemical sciences, Transformation (function), Deep neural networks, Artificial intelligence, Chemistry (relationship), business, Set (psychology), Retrosynthetic analysis, computer
Abstract

Reaction prediction and retrosynthesis are the cornerstones of organic chemistry. Rule-based expert systems have been the most widespread approach to computationally solve these two related challenges to date. However, reaction rules often fail because they ignore the molecular context, which leads to reactivity conflicts. Herein, we report that deep neural networks can learn to resolve reactivity conflicts and to prioritize the most suitable transformation rules. We show that by training our model on 3.5 million reactions taken from the collective published knowledge of the entire discipline of chemistry, our model exhibits a top10-accuracy of 95 % in retrosynthesis and 97 % for reaction prediction on a validation set of almost 1 million reactions.

Published
2016

37. PROGRESS IN THE CONSTRUCTION OF THE CDF SILICON VERTEX DETECTOR

Author

S. Dell'Agnello, M. Wong, L. Pescara, G. Busetto, Hans J. Wenzel, Andrea Castro, Mosè Mariotti, J. A. J. Matthews, R. Ely, M. Gold, P. Tipton, F. D. Snider, Slawek Tkaczyk, S. Segler, S. Kleinfelder, S. Vejcik, V. Bolognesi, M. Hrycyk, N. M. Shaw, J. Skarha, B. A. Barnett, Giovanni Punzi, M. Loreti, Dario Bisello, H. Carter, Kathleen R. Turner, Nicola Turini, O. Schneider, Charles A. Nelson, M. W. Bailey, L. Ristori, Timothy M. Shaw, D. Amidei, Nicola Bacchetta, F. Bedeschi, A. Menzione, B. Gonzales, W. C. Wester, C. Boswell, Alan Garfinkel, A. Spies, S. Galeotti, P. F. Derwent, J. Tseng, W. Carithers, S.E. Holland, F. Raffaelli, C. Haber, B. Flaugher, F. Tartarelli, F. Zetti, and T. Merrick

Subjects
Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, Detector, Readout electronics, chemistry.chemical_element, STRIPS, Silicon vertex detector, law.invention, Nuclear physics, Optics, chemistry, law, Mechanical design, High Energy Physics::Experiment, Gas cooling, business, Instrumentation
Abstract

The mechanical design and construction progress of the CDF silicon vertex detector is described. Results on the location accuracy of the silicon strip detectors are presented and indicate an initial placement uncertainty of less than 10 μm. The water and gas cooling system, which is constructed of low mass materials and is used to remove heat from the readout electronics, is briefly described. Measurements of the performance of the silicon strip detectors are also given and show > 98.5% functioning strips for the assembled SVX detector.

Published
2016
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38. Observation of diffractive J/psi production at the Fermilab Tevatron

Author

K. Kondo, Robert M Harris, G. Veramendi, M. Gold, A. Munar, G. Pauletta, Andrea Castro, D. Khazins, Maxwell Chertok, T. Ohsugi, I. Yu, M. J. Shochet, K. Karr, R. J. Miller, A. Connolly, E. Kovacs, T. Ohmoto, W. Orejudos, Frank Chlebana, T. Asakawa, Z. Yu, Marjorie Shapiro, A. J. Slaughter, A. Mukherjee, A. Akopian, C. Pagliarone, G. Punzi, E. Engels, Maurice Garcia-Sciveres, M. P. Schmidt, Andrea Bocci, E. Buckley-Geer, Riccardo Paoletti, P. Schlabach, S. Galeotti, A. Rakitine, P. Sinervo, R. Takashima, Tommaso Dorigo, James Bensinger, M. Barone, M. Kelly, E. McKigney, J. Wolinski, A. Reichold, Leonard Spiegel, R. Vilar, P. K. Teng, C. Green, A. Nomerotski, T. Yoshida, P. Azzi-Bacchetta, C. Smith, M. Guenther, C. Bromberg, P. Murat, G. Velev, N. Lai, Kazuhiko Hara, F. Zetti, Stephan Lammel, A. Robinson, S. Wolinski, J. D. Lewis, Kenichi Hatakeyama, J. G. Loken, C. Holck, E. James, S. Vejcik, M. Mangano, G. W. Foster, D. Glenzinski, M. Lindgren, T. Kikuchi, A. Artikov, S. Segler, H. Sato, M. Kirk, P. Koehn, P. Yeh, Fedor Prokoshin, Pierre Savard, M. Popovic, Yasuo Fukui, T. Takano, M. Franklin, Lawrence Nodulman, M. Shimojima, Stefano Belforte, T. Okusawa, T. Kuwabara, P. Mazzanti, Q. Fan, A. Tollestrup, W. Caskey, C. Ferretti, R. E. Hughes, Maria Spiropulu, T. Devlin, B. Tannenbaum, Thomas LeCompte, A. Sidoti, J. Done, J. Huston, Matthew Herndon, Chunhui Chen, Petar Maksimovic, Hajin Kim, M. Mishina, J. C. Freeman, J. A.J. Matthews, G. Bauer, A. D. Hardman, F. D. Snider, J. Cranshaw, L. Ristori, R. Culbertson, R. J. Tesarek, S. Rolli, Benjamin Kilminster, Y. Gotra, Fumihiko Ukegawa, A. Dominguez, D. Winn, Christoph Paus, J. Carlson, A. B. Wicklund, William Trischuk, D. Lucchesi, Barry Blumenfeld, S. C. van den Brink, M. J. Wang, T. Miao, R. M. Haas, Umesh Joshi, Roger Moore, M. H. Kirby, D. O. Litvintsev, Nicola Bacchetta, E. E. Schmidt, C. I. Ciobanu, A. Roy, J. Steele, F. Bedeschi, Xin Wu, S. Wolbers, D. W. Gerdes, K. D. Hoffman, Gino Bolla, T. L. Watts, L. Holloway, H. Toyoda, S. H. Kim, Christina Mesropian, Yanwen Liu, R. Kephart, R. L. Wagner, Hiroto Kambara, T. Handa, Andrey Korytov, N. S. Lockyer, Roberto Rossin, S. Cabrera, W. Carithers, S. Murgia, H. Wenzel, H. Akimoto, A. Scribano, R. Oishi, R. Madrak, Joe Kroll, C. Nelson, Monica D'Onofrio, J. Patrick, P. Sphicas, Virgil E Barnes, N. Moggi, Frank Hartmann, Alan Sill, K. Goulianos, S. R. Hahn, V. Glagolev, K. S. McFarland, S. Tether, J. Antos, Konstanty Sumorok, M. Bishai, S. Lami, T. Shah, J. Berryhill, A. Semenov, M. Cordelli, G. Busetto, Brian L Winer, M. Brozovic, Minu Kim, S. Waschke, K. Tollefson, R. G. Wagner, Kenneth Bloom, Matthew Jones, K. Anikeev, D. Errede, G. Latino, Th. Müller, K. Sliwa, S. Klimenko, Aw Chan, T. Shibayama, M. Loreti, Duncan Carlsmith, J. Valls, D. Wolinski, K. Kelley, S. Leone, H. S. Budd, T. Kaneko, Joel Goldstein, Y. C. Chen, S. Tkaczyk, David Stuart, Y. Kato, D. Neuberger, G. Guillian, M. Binkley, P. Gris, Alexei Safonov, M. G. Albrow, Douglas Benjamin, J. Guimaraes Da Costa, D. Tonelli, R. G. Feild, K. Terashi, P. S. Chang, J. B. Liu, James D. Olsen, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, C. Haber, Tong Gao, S. E. Kuhlmann, A. Menzione, Y. Seiya, Nicola Turini, A. T. Laasanen, Catherine Newman-Holmes, Jay Hauser, G. P. Yeh, I. V. Gorelov, T. Speer, J. Spalding, G. Chlachidze, G. P. Grim, Masaaki Tanaka, Tony Liss, P. Amaral, G. Piacentino, S. Worm, K. Borras, R. D. Field, D. Amidei, M. L. Chu, A. T. Goshaw, H. Minato, Mosè Mariotti, Paolo Calafiura, Teresa Rodrigo, K. Lee, W. C. Wester, F. Strumia, T. J. Phillips, S. Miscetti, S. Zucchelli, R. E. Blair, Andrea Sansoni, Ivan-Kresimir Furic, Christopher Neu, F. Rimondi, E. Brubaker, J. Strologas, P. de Barbaro, A. Gallas, J. F. de Troconiz, Y. Morita, P. Tamburello, J. Lys, S. Donati, J. Yoh, P. Gatti, M. E. Convery, P. F. Derwent, V. Nagaslaev, M. von der Mey, Hiroshi Ikeda, R. Roser, Ivan Vila, J. N. Bellinger, G. Bellettini, H. Bachacou, S. Baroiant, F. DeJongh, W. Ashmanskas, Robin Erbacher, W-M. Yao, O. Pukhov, Louis Lyons, G. Martignon, R. C. Webb, J.I. Friedman, M. Lancaster, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, S. Errede, W. K. Sakumoto, N. B. Wallace, L. Demortier, Igor Volobouev, C. H. Wang, N. Eddy, R. J. Hollebeek, J. Wyss, Soo-Bong Kim, Andrew Beretvas, Timothy Knight Nelson, C. Grosso-Pilcher, Z. Wan, A. M. Lee, J. S. Miller, Kevin Burkett, Jacobo Konigsberg, Young Do Oh, J. Mayer, Beom Jun Kim, Richard Dante St Denis, A. Bodek, J. Iwai, W. H. Bell, G. Chiarelli, W. Hao, A. Ruiz, D. Toback, M. T. Cheng, R. D. Kennedy, M. M. Deninno, C. Yosef, Alessandro Cerri, B. Ward, Amitabh Lath, A. Brandl, T. Moulik, I.E. Chirikov-Zorin, A. Solodsky, A. G. Clark, B. A. Barnett, Giorgio Apollinari, A. Meyer, J. Siegrist, Kevin Einsweiler, T. Wilkes, John Huth, M. Dell'Orso, Teruki Kamon, A. J. Martin, L. Pondrom, E. Wicklund, Craig Blocker, C. R. Hall, J. W. Chapman, Kaori Maeshima, Mark Kruse, Luca Scodellaro, Guenakh Mitselmakher, J. E. Elias, T. Vaiciulis, Paul Tipton, K. L. Byrum, P. Wilson, P. N. Singh, M. Menguzzato, M. Tecchio, R. Vidal, Anna Zanetti, H. Kasha, H. Niu, N. Bruner, L. Rosenson, P. F. Shepard, S. H. Oh, Jane Nachtman, J. P. Fernandez, L. E. Kirsch, F. Ratnikov, P. Lukens, Jay Dittmann, D. Cauz, V. Papadimitriou, Daijin Kim, Michele Gallinaro, A. S. Thompson, A. Heiss, Itsuo Nakano, D. Dagenhart, J. Tseng, L. Groer, L. Pescara, Alan Garfinkel, J. Boudreau, M. Riveline, H. H. Williams, K. T. Pitts, G. Introzzi, A. Korn, A. Stefanini, Y. Bonushkin, David Saltzberg, D. Reher, P. McIntyre, J. Budagov, R. L. Lander, J. P. Berge, F. Azfar, D. E. Pellett, L. Christofek, T. Suzuki, C. Sanchez, Manfred Paulini, S. Blusk, Jochen Jens Heinrich, H. Nakada, A. Pompos, Sally Seidel, Saverio D'Auria, O. Lobban, Yongsun Kim, L. Santi, Shin-Shan Yu, A. Ribon, M. Mulhearn, W. Riegler, F. Ptohos, W. J. Robertson, T. Watanabe, W. Bokhari, M. Campbell, D. Waters, P. Giannetti, J. Lancaster, R. Handler, Y. S. Chung, S. Dell'Agnello, R. Cropp, S. Bailey, B. Flaugher, Michael Schmitt, J. Incandela, J. Conway, G. Pope, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, F. Spinella, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, S. Nahn, E. Moore, Y. Iwata, Daniela Bortoletto, K. Takikawa, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin

Subjects
Physics, Particle physics, Muon, Proton, Tevatron, General Physics and Astronomy, Particle accelerator, ddc:500.2, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Gluon, law.invention, High Energy Physics - Experiment, Nuclear physics, law, Pseudorapidity, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Rapidity, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, QC
Abstract

We report the first observation of diffractive $J/\psi(\to \mu^+\mu^-)$ production in $\bar pp$ collisions at $\sqrt{s}$=1.8 TeV. Diffractive events are identified by their rapidity gap signature. In a sample of events with two muons of transverse momentum $p_T^{\mu}>2$ GeV/$c$ within the pseudorapidity region $|\eta, Comment: 9 pages, 4 figures, using RevTeX. Submitted to Physical Review Letters

Published
2016
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39. Measurement of the strong coupling constant from inclusive jet production at the Tevatron pp collider

Author

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, A. Artikov, T. Asakawa, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, H. Bachacou, S. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandl, S. van den Brink, C. Bromberg, M. Brozovic, E. Brubaker, N. Bruner, E. Buckley-Geer, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, S. Cabrera, P. Calafiura, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, W. Caskey, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M.-T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, Y. S. Chung, C. I. Ciobanu, A. G. Clark, A. P. Colijn, A. Connolly, M. Convery, J. Conway, M. Cordelli, J. Cranshaw, R. Cropp, R. Culbertson, D. Dagenhart, S. D'Auria, F. DeJongh, S. Dell'Agnello, M. Dell'Orso, S. Demers, L. Demortier, M. Deninno, P. F. Derwent, T. Devlin, J. R. Dittmann, A. Dominguez, S. Donati, J. Done, M. D'Onofrio, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, E. Engels, R. Erbacher, D. Errede, S. Errede, Q. Fan, H.-C. Fang, R. G. Feild, J. P. Fernandez, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, Y. Fukui, I. Furic, S. Galeotti, A. Gallas, M. Gallinaro, T. Gao, M. Garcia-Sciveres, A. F. Garfinkel, P. Gatti, C. Gay, D. W. Gerdes, P. Giannetti, P. Giromini, V. Glagolev, D. Glenzinski, M. Gold, J. Goldstein, I. Gorelov, A. T. Goshaw, Y. Gotra, K. Goulianos, C. Green, G. Grim, P. Gris, L. Groer, C. Grosso-Pilcher, M. Guenther, G. Guillian, J. Guimaraes da Costa, R. M. Haas, C. Haber, S. R. Hahn, C. Hall, T. Handa, R. Handler, W. Hao, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, A. Heiss, M. Herndon, C. Hill, K. D. Hoffman, C. Holck, R. Hollebeek, L. Holloway, B. T. Huffman, R. Hughes, J. Huston, J. Huth, H. Ikeda, J. Incandela, G. Introzzi, A. Ivanov, J. Iwai, Y. Iwata, E. James, M. Jones, U. Joshi, H. Kambara, T. Kamon, T. Kaneko, K. Karr, S. Kartal, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, M. Kelly, D. Khazins, T. Kikuchi, B. Kilminster, B. J. Kim, D. H. Kim, H. S. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kim, M. Kirby, M. Kirk, L. Kirsch, S. Klimenko, P. Koehn, K. Kondo, J. Konigsberg, A. Korn, A. Korytov, E. Kovacs, J. Kroll, M. Kruse, S. E. Kuhlmann, K. Kurino, T. Kuwabara, A. T. Laasanen, N. Lai, S. Lami, S. Lammel, J. Lancaster, M. Lancaster, R. Lander, A. Lath, G. Latino, T. LeCompte, A. M. Lee, K. Lee, S. Leone, J. D. Lewis, M. Lindgren, T. M. Liss, J. B. Liu, Y. C. Liu, D. O. Litvintsev, O. Lobban, N. Lockyer, J. Loken, M. Loreti, D. Lucchesi, P. Lukens, S. Lusin, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, M. Mariotti, G. Martignon, A. Martin, J. A. J. Matthews, J. Mayer, P. Mazzanti, K. S. McFarland, P. McIntyre, E. McKigney, M. Menguzzato, A. Menzione, P. Merkel, C. Mesropian, A. Meyer, T. Miao, R. Miller, J. S. Miller, H. Minato, S. Miscetti, M. Mishina, G. Mitselmakher, Y. Miyazaki, N. Moggi, E. Moore, R. Moore, Y. Morita, T. Moulik, M. Mulhearn, A. Mukherjee, T. Muller, A. Munar, P. Murat, S. Murgia, J. Nachtman, V. Nagaslaev, S. Nahn, H. Nakada, I. Nakano, C. Nelson, T. Nelson, C. Neu, D. Neuberger, C. Newman-Holmes, C.-Y. P. Ngan, H. Niu, L. Nodulman, A. Nomerotski, S. H. Oh, Y. D. Oh, T. Ohmoto, T. Ohsugi, R. Oishi, T. Okusawa, J. Olsen, W. Orejudos, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, D. Partos, J. Patrick, G. Pauletta, M. Paulini, C. Paus, D. Pellett, L. Pescara, T. J. Phillips, G. Piacentino, K. T. Pitts, A. Pompos, L. Pondrom, G. Pope, M. Popovic, F. Prokoshin, J. Proudfoot, F. Ptohos, O. Pukhov, G. Punzi, A. Rakitine, F. Ratnikov, D. Reher, A. Reichold, P. Renton, A. Ribon, W. Riegler, F. Rimondi, L. Ristori, M. Riveline, W. J. Robertson, A. Robinson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, C. Rott, A. Roy, A. Ruiz, A. Safonov, R. St. Denis, W. K. Sakumoto, D. Saltzberg, C. Sanchez, A. Sansoni, L. Santi, H. Sato, P. Savard, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scott, A. Scribano, S. Segler, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, T. Shah, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, A. Sidoti, J. Siegrist, A. Sill, P. Sinervo, P. Singh, A. J. Slaughter, K. Sliwa, C. Smith, F. D. Snider, A. Solodsky, J. Spalding, T. Speer, P. Sphicas, F. Spinella, M. Spiropulu, L. Spiegel, J. Steele, A. Stefanini, J. Strologas, F. Strumia, D. Stuart, K. Sumorok, T. Suzuki, T. Takano, R. Takashima, K. Takikawa, P. Tamburello, M. Tanaka, B. Tannenbaum, M. Tecchio, R. Tesarek, P. K. Teng, K. Terashi, S. Tether, A. S. Thompson, R. Thurman-Keup, P. Tipton, S. Tkaczyk, D. Toback, K. Tollefson, A. Tollestrup, D. Tonelli, H. Toyoda, W. Trischuk, J. F. de Troconiz, J. Tseng, N. Turini, F. Ukegawa, T. Vaiciulis, J. Valls, S. Vejcik, G. Velev, G. Veramendi, R. Vidal, I. Vila, R. Vilar, I. Volobouev, M. von der Mey, D. Vucinic, R. G. Wagner, R. L. Wagner, N. B. Wallace, Z. Wan, C. Wang, M. J. Wang, B. Ward, S. Waschke, T. Watanabe, D. Waters, T. Watts, R. Webb, H. Wenzel, W. C. Wester, A. B. Wicklund, E. Wicklund, T. Wilkes, H. H. Williams, P. Wilson, B. L. Winer, D. Winn, S. Wolbers, D. Wolinski, J. Wolinski, S. Wolinski, S. Worm, X. Wu, J. Wyss, W. Yao, G. P. Yeh, P. Yeh, J. Yoh, C. Yosef, T. Yoshida, I. Yu, S. Yu, Z. Yu, A. Zanetti, F. Zetti, S. Zucchelli, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin

Subjects
Physics, Quantum chromodynamics, Coupling constant, Particle physics, General Physics and Astronomy, ddc:500.2, Gluon, Renormalization, Distribution function, Production (computer science), High Energy Physics::Experiment, Nuclear Experiment, Energy (signal processing), Boson
Abstract

We report a measurement of the strong coupling constant, ${\ensuremath{\alpha}}_{s}({M}_{Z})$, extracted from inclusive jet production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1800\mathrm{GeV}$. The QCD prediction for the evolution of ${\ensuremath{\alpha}}_{s}$ with jet transverse energy ${E}_{T}$ is tested over the range $40l{E}_{T}l450\mathrm{GeV}$ using ${E}_{T}$ for the renormalization scale. The data show good agreement with QCD in the region below 250 GeV. The value of ${\ensuremath{\alpha}}_{s}$ at the mass of the ${Z}^{0}$ boson averaged over the range $40l{E}_{T}l250\mathrm{GeV}$ is found to be ${\ensuremath{\alpha}}_{s}({M}_{Z})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.1178\ifmmode\pm\else\textpm\fi{}0.0001(\mathrm{stat}{)}_{\ensuremath{-}0.0095}^{+0.0081}(\mathrm{expt}.\mathrm{syst})$. The associated theoretical uncertainties are mainly due to the choice of renormalization scale $({+6%}{\ensuremath{-}4%})$ and input parton distribution functions $(5%)$.

Published
2016
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40. 11th German Conference on Chemoinformatics (GCC 2015) : Fulda, Germany. 8-10 November 2015

Author

Uli Fechner, Chris de Graaf, Andrew E. Torda, Stefan Güssregen, Andreas Evers, Hans Matter, Gerhard Hessler, Nicola J. Richmond, Peter Schmidtke, Marwin H. S. Segler, Mark P. Waller, Stefanie Pleik, Joan-Emma Shea, Zachary Levine, Ryan Mullen, Karina van den Broek, Matthias Epple, Hubert Kuhn, Andreas Truszkowski, Achim Zielesny, Johannes Fraaije, Ruben Serral Gracia, Stefan M. Kast, Krishna C. Bulusu, Andreas Bender, Abraham Yosipof, Oren Nahum, Hanoch Senderowitz, Timo Krotzky, Robert Schulz, Gerhard Wolber, Stefan Bietz, Matthias Rarey, Markus O. Zimmermann, Andreas Lange, Manuel Ruff, Johannes Heidrich, Ionut Onlia, Thomas E. Exner, Frank M. Boeckler, Marcel Bermudez, Dzmitry S. Firaha, Oldamur Hollóczki, Barbara Kirchner, Christofer S. Tautermann, Andrea Volkamer, Sameh Eid, Samo Turk, Friedrich Rippmann, Simone Fulle, Noureldin Saleh, Giorgio Saladino, Francesco L. Gervasio, Elke Haensele, Lee Banting, David C. Whitley, Jana Sopkova-de Oliveira Santos, Ronan Bureau, Timothy Clark, Achim Sandmann, Harald Lanig, Patrick Kibies, Jochen Heil, Franziska Hoffgaard, Roland Frach, Julian Engel, Steven Smith, Debjit Basu, Daniel Rauh, Oliver Kohlbacher, Jonathan W. Essex, Michael S. Bodnarchuk, Gregory A. Ross, Arndt R. Finkelmann, Andreas H. Göller, Gisbert Schneider, Tamara Husch, Christoph Schütter, Andrea Balducci, Martin Korth, Fidele Ntie-Kang, Stefan Günther, Wolfgang Sippl, Luc Meva’a Mbaze, Conrad V. Simoben, Lydia L. Lifongo, Philip Judson, Jiří Barilla, Miloš V. Lokajíček, Hana Pisaková, Pavel Simr, Natalia Kireeva, Alexandre Petrov, Denis Ostroumov, Vitaly P. Solovev, Vladislav S. Pervov, Nils-Ole Friedrich, Kai Sommer, Johannes Kirchmair, Eugen Proschak, Julia Weber, Daniel Moser, Lena Kalinowski, Janosch Achenbach, Mark Mackey, Tim Cheeseright, Gerrit Renner, Torsten C. Schmidt, Jürgen Schram, Marion Egelkraut-Holtus, Albert van Oeyen, Tuomo Kalliokoski, Denis Fourches, Akachukwu Ibezim, Chika J. Mbah, Umale M. Adikwu, Ngozi J. Nwodo, Alexander Steudle, Brian B. Masek, Stephan Nagy, David Baker, Fred Soltanshahi, Roman Dorfman, Karen Dubrucq, Hitesh Patel, Oliver Koch, Florian Mrugalla, Qurrat U. Ain, Julian E. Fuchs, Robert M. Owen, Kiyoyuki Omoto, Rubben Torella, David C. Pryde, Robert Glen, Petr Hošek, Vojtěch Spiwok, Lewis H. Mervin, Ian Barrett, Mike Firth, David C. Murray, Lisa McWilliams, Qing Cao, Ola Engkvist, Dawid Warszycki, Marek Śmieja, Andrzej J. Bojarski, Natalia Aniceto, Alex Freitas, Taravat Ghafourian, Guido Herrmann, Valentina Eigner-Pitto, Alexandra Naß, Rafał Kurczab, Marcel B. Günther, Susanne Hennig, Felix M. Büttner, Christoph Schall, Adrian Sievers-Engler, Francesco Ansideri, Pierre Koch, Thilo Stehle, Stefan Laufer, Frank M. Böckler, Barbara Zdrazil, Floriane Montanari, Gerhard F. Ecker, Christoph Grebner, Anders Hogner, Johan Ulander, Karl Edman, Victor Guallar, Christian Tyrchan, Wolfgang Klute, Fredrik Bergström, Christian Kramer, Quoc Dat Nguyen, Steven Strohfeldt, Saraphina Böttcher, Tim Pongratz, Dominik Horinek, Bernd Rupp, Raed Al-Yamori, Michael Lisurek, Ronald Kühne, Filipe Furtado, Ludger Wessjohann, Miriam Mathea, Knut Baumann, Siti Zuraidah Mohamad-Zobir, Xianjun Fu, Tai-Ping Fan, Maximilian A. Kuhn, Christoph A. Sotriffer, Azedine Zoufir, Xitong Li, Lewis Mervin, Ellen Berg, Mark Polokoff, Wolf D. Ihlenfeldt, Jette Pretzel, Zayan Alhalabi, Robert Fraczkiewicz, Marvin Waldman, Robert D. Clark, Neem Shaikh, Prabha Garg, Alexander Kos, Hans-Jürgen Himmler, Christophe Jardin, Heinrich Sticht, Thomas B. Steinbrecher, Markus Dahlgren, Daniel Cappel, Teng Lin, Lingle Wang, Goran Krilov, Robert Abel, Richard Friesner, Woody Sherman, Ina A. Pöhner, Joanna Panecka, Rebecca C. Wade, Karen T. Schomburg, Matthias Hilbig, Christian Jäger, Vivien Wieczorek, Lance M. Westerhoff, Oleg Y. Borbulevych, Hans-Ulrich Demuth, Mirko Buchholz, Denis Schmidt, Thomas Rickmeyer, Peter Kolb, Sumit Mittal, Elsa Sánchez-García, Mauro S. Nogueira, Tiago B. Oliveira, Fernando B. da Costa, and Thomas J. Schmidt

Subjects
0303 health sciences, Philosophy, Library and Information Sciences, 16. Peace & justice, Bioinformatics, 01 natural sciences, Computer Graphics and Computer-Aided Design, Meeting Abstracts, language.human_language, 0104 chemical sciences, Computer Science Applications, German, 010404 medicinal & biomolecular chemistry, 03 medical and health sciences, language, Physical and Theoretical Chemistry, Humanities, 030304 developmental biology
Abstract

Author(s): Fechner, Uli; de Graaf, Chris; Torda, Andrew E; Gussregen, Stefan; Evers, Andreas; Matter, Hans; Hessler, Gerhard; Richmond, Nicola J; Schmidtke, Peter; Segler, Marwin HS; Waller, Mark P; Pleik, Stefanie; Shea, Joan-Emma; Levine, Zachary; Mullen, Ryan; van den Broek, Karina; Epple, Matthias; Kuhn, Hubert; Truszkowski, Andreas; Zielesny, Achim; Fraaije, Johannes Hans; Gracia, Ruben Serral; Kast, Stefan M; Bulusu, Krishna C; Bender, Andreas; Yosipof, Abraham; Nahum, Oren; Senderowitz, Hanoch; Krotzky, Timo; Schulz, Robert; Wolber, Gerhard; Bietz, Stefan; Rarey, Matthias; Zimmermann, Markus O; Lange, Andreas; Ruff, Manuel; Heidrich, Johannes; Onlia, Ionut; Exner, Thomas E; Boeckler, Frank M; Bermudez, Marcel; Firaha, Dzmitry S; Holloczki, Oldamur; Kirchner, Barbara; Tautermann, Christofer S; Volkamer, Andrea; Eid, Sameh; Turk, Samo; Rippmann, Friedrich; Fulle, Simone; Saleh, Noureldin; Saladino, Giorgio; Gervasio, Francesco L; Haensele, Elke; Banting, Lee; Whitley, David C; Oliveira Santos, Jana Sopkova-de; Bureau, Ronan; Clark, Timothy; Sandmann, Achim; Lanig, Harald; Kibies, Patrick; Heil, Jochen; Hoffgaard, Franziska; Frach, Roland; Engel, Julian; Smith, Steven; Basu, Debjit; Rauh, Daniel; Kohlbacher, Oliver; Boeckler, Frank M; Essex, Jonathan W; Bodnarchuk, Michael S; Ross, Gregory A; Finkelmann, Arndt R; Goller, Andreas H; Schneider, Gisbert; Husch, Tamara; Schutter, Christoph; Balducci, Andrea; Korth, Martin; Ntie-Kang, Fidele; Gunther, Stefan; Sippl, Wolfgang; Mbaze, Luc Meva'a

Published
2016

41. ChemInform Abstract: Dehydrogenative TEMPO-Mediated Formation of Unstable Nitrones: Easy Access to N-Carbamoyl Isoxazolines

Author

Andrea Gini, Dominik Kellner, Marwin H. S. Segler, and Olga García Mancheño

Subjects
chemistry.chemical_classification, chemistry, Reagent, Dehydrogenation, General Medicine, Combinatorial chemistry, Nitrone
Abstract

N-carbamoyl nitrones represent an important class of reagents for the synthesis of a variety of natural and biologically active compounds. These compounds are generally converted into valuable 4-isoxazolines upon cyclization reaction with dipolarophiles. However, these types of N-protected nitrones are highly unstable, which limits their synthesis, storage and practical use, enforcing alternative lengthy or elaborated synthetic routes. In this work, a 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-mediated formal "dehydrogenation" of N-protected benzyl-, allyl- and alkyl-substituted hydroxylamines followed by in situ trapping of the generated unstable nitrones into N-carbamoyl 4-isoxazolines is presented. A plausible mechanism is also proposed, in which the dipolarophile shows an important assistant role in the generation of the active nitrone intermediate. This simple protocol avoids the problematic isolation of N-carbamoyl protected nitrones, providing new synthetic possibilities in isoxazoline chemistry.

Published
2016
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42. Opportunities and obstacles for deep learning in biology and medicine

Author

Travers Ching, S. Joshua Swamidass, Anne E. Carpenter, Michael M. Hoffman, Gregory P. Way, Dave DeCaprio, Benjamin J. Lengerich, Avanti Shrikumar, Johnny Israeli, Zhiyong Lu, Austin Huang, Amr Alexandari, Christopher A. Lavender, Anthony Gitter, Enrico Ferrero, Jack Lanchantin, Evan M. Cofer, Brett K. Beaulieu-Jones, Wei Xie, Michael Zietz, Laura K. Wiley, Anshul Kundaje, Paul-Michael Agapow, Yifan Peng, Stephen Woloszynek, Jinbo Xu, Srinivas C. Turaga, Yanjun Qi, Brian T. Do, Marwin H. S. Segler, Alexandr A. Kalinin, Gail L. Rosen, Simina M. Boca, David J. Harris, Daniel Himmelstein, and Casey S. Greene

Subjects
0301 basic medicine, Biomedical Research, Computer science, Big data, Health records, Biochemistry, Field (computer science), 0302 clinical medicine, Electronic Health Records, Disease, Review Articles, Interpretability, 0303 health sciences, Class (computer programming), Artificial neural network, Management science, 3. Good health, Variety (cybernetics), machine learning, Algorithms, Biotechnology, precision medicine, Decision Making, Biomedical Technology, Biomedical Engineering, Biophysics, Bioengineering, Biomaterials, 03 medical and health sciences, Terminology as Topic, genomics, Humans, Baseline (configuration management), Biomedicine, 030304 developmental biology, business.industry, Deep learning, deep learning, Precision medicine, Data science, 030104 developmental biology, Drug Design, Labeled data, Artificial intelligence, business, Delivery of Health Care, 030217 neurology & neurosurgery, Headline Review
Abstract

Deep learning describes a class of machine learning algorithms that are capable of combining raw inputs into layers of intermediate features. These algorithms have recently shown impressive results across a variety of domains. Biology and medicine are data-rich disciplines, but the data are complex and often ill-understood. Hence, deep learning techniques may be particularly well suited to solve problems of these fields. We examine applications of deep learning to a variety of biomedical problems—patient classification, fundamental biological processes and treatment of patients—and discuss whether deep learning will be able to transform these tasks or if the biomedical sphere poses unique challenges. Following from an extensive literature review, we find that deep learning has yet to revolutionize biomedicine or definitively resolve any of the most pressing challenges in the field, but promising advances have been made on the prior state of the art. Even though improvements over previous baselines have been modest in general, the recent progress indicates that deep learning methods will provide valuable means for speeding up or aiding human investigation. Though progress has been made linking a specific neural network's prediction to input features, understanding how users should interpret these models to make testable hypotheses about the system under study remains an open challenge. Furthermore, the limited amount of labelled data for training presents problems in some domains, as do legal and privacy constraints on work with sensitive health records. Nonetheless, we foresee deep learning enabling changes at both bench and bedside with the potential to transform several areas of biology and medicine.

Published
2018
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43. Search for Neutral Supersymmetric Higgs Bosons inpp¯Collisions ats=1.8TeV

Author

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, S. R. Amendolia, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, M. W. Bailey, S. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, B. Bevensee, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandl, S. van den Brink, C. Bromberg, M. Brozovic, N. Bruner, E. Buckley-Geer, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, P. Calafiura, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, W. Caskey, J. Cassada, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M.-T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, Y. S. Chung, C. I. Ciobanu, A. G. Clark, A. Connolly, J. Conway, M. Cordelli, J. Cranshaw, D. Cronin-Hennessy, R. Cropp, R. Culbertson, D. Dagenhart, S. D'Auria, F. DeJongh, S. Dell'Agnello, M. Dell'Orso, L. Demortier, M. Deninno, P. F. Derwent, T. Devlin, J. R. Dittmann, S. Donati, J. Done, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, E. Engels, D. Errede, S. Errede, Q. Fan, R. G. Feild, J. P. Fernandez, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, Y. Fukui, I. Furic, S. Galeotti, M. Gallinaro, T. Gao, M. Garcia-Sciveres, A. F. Garfinkel, P. Gatti, C. Gay, D. W. Gerdes, P. Giannetti, P. Giromini, V. Glagolev, M. Gold, J. Goldstein, A. Gordon, I. Gorelov, A. T. Goshaw, Y. Gotra, K. Goulianos, C. Green, G. Grim, P. Gris, L. Groer, C. Grosso-Pilcher, M. Guenther, G. Guillian, J. Guimaraes da Costa, R. M. Haas, C. Haber, E. Hafen, S. R. Hahn, C. Hall, T. Handa, R. Handler, W. Hao, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, A. Heiss, M. Herndon, C. Hill, K. D. Hoffman, C. Holck, R. Hollebeek, L. Holloway, R. Hughes, J. Huston, J. Huth, H. Ikeda, J. Incandela, G. Introzzi, J. Iwai, Y. Iwata, E. James, H. Jensen, M. Jones, U. Joshi, H. Kambara, T. Kamon, T. Kaneko, K. Karr, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, M. Kelly, R. D. Kennedy, R. Kephart, D. Khazins, T. Kikuchi, B. Kilminster, B. J. Kim, D. H. Kim, H. S. Kim, M. J. Kim, S. H. Kim, Y. K. Kim, M. Kirby, M. Kirk, L. Kirsch, S. Klimenko, P. Koehn, A. Köngeter, K. Kondo, J. Konigsberg, K. Kordas, A. Korn, A. Korytov, E. Kovacs, J. Kroll, M. Kruse, S. E. Kuhlmann, K. Kurino, T. Kuwabara, A. T. Laasanen, N. Lai, S. Lami, S. Lammel, J. I. Lamoureux, J. Lancaster, M. Lancaster, R. Lander, G. Latino, T. LeCompte, A. M. Lee, K. Lee, S. Leone, J. D. Lewis, M. Lindgren, T. M. Liss, J. B. Liu, Y. C. Liu, N. Lockyer, J. Loken, M. Loreti, D. Lucchesi, P. Lukens, S. Lusin, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, M. Mariotti, G. Martignon, A. Martin, J. A. J. Matthews, J. Mayer, P. Mazzanti, K. S. McFarland, P. McIntyre, E. McKigney, M. Menguzzato, A. Menzione, C. Mesropian, A. Meyer, T. Miao, R. Miller, J. S. Miller, H. Minato, S. Miscetti, M. Mishina, G. Mitselmakher, N. Moggi, E. Moore, R. Moore, Y. Morita, M. Mulhearn, A. Mukherjee, T. Muller, A. Munar, P. Murat, S. Murgia, J. Nachtman, S. Nahn, H. Nakada, T. Nakaya, I. Nakano, C. Nelson, T. Nelson, C. Neu, D. Neuberger, C. Newman-Holmes, C.-Y. P. Ngan, H. Niu, L. Nodulman, A. Nomerotski, S. H. Oh, T. Ohmoto, T. Ohsugi, R. Oishi, T. Okusawa, J. Olsen, W. Orejudos, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, S. P. Pappas, D. Partos, J. Patrick, G. Pauletta, M. Paulini, C. Paus, L. Pescara, T. J. Phillips, G. Piacentino, K. T. Pitts, A. Pompos, L. Pondrom, G. Pope, M. Popovic, F. Prokoshin, J. Proudfoot, F. Ptohos, O. Pukhov, G. Punzi, K. Ragan, A. Rakitine, D. Reher, A. Reichold, A. Ribon, W. Riegler, F. Rimondi, L. Ristori, M. Riveline, W. J. Robertson, A. Robinson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, A. Safonov, R. St. Denis, W. K. Sakumoto, D. Saltzberg, C. Sanchez, A. Sansoni, L. Santi, H. Sato, P. Savard, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scott, A. Scribano, S. Segler, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, T. Shah, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, J. Siegrist, G. Signorelli, A. Sill, P. Sinervo, P. Singh, A. J. Slaughter, K. Sliwa, C. Smith, F. D. Snider, A. Solodsky, J. Spalding, T. Speer, P. Sphicas, F. Spinella, M. Spiropulu, L. Spiegel, J. Steele, A. Stefanini, J. Strologas, F. Strumia, D. Stuart, K. Sumorok, T. Suzuki, T. Takano, R. Takashima, K. Takikawa, P. Tamburello, M. Tanaka, B. Tannenbaum, W. Taylor, M. Tecchio, P. K. Teng, K. Terashi, S. Tether, A. S. Thompson, R. Thurman-Keup, P. Tipton, S. Tkaczyk, K. Tollefson, A. Tollestrup, H. Toyoda, W. Trischuk, J. F. de Troconiz, J. Tseng, N. Turini, F. Ukegawa, T. Vaiciulis, J. Valls, S. Vejcik, G. Velev, R. Vidal, R. Vilar, I. Volobouev, D. Vucinic, R. G. Wagner, R. L. Wagner, J. Wahl, N. B. Wallace, A. M. Walsh, C. Wang, M. J. Wang, T. Watanabe, D. Waters, T. Watts, R. Webb, H. Wenzel, W. C. Wester, A. B. Wicklund, E. Wicklund, T. Wilkes, H. H. Williams, P. Wilson, B. L. Winer, D. Winn, S. Wolbers, D. Wolinski, J. Wolinski, S. Wolinski, S. Worm, X. Wu, J. Wyss, A. Yagil, W. Yao, G. P. Yeh, P. Yeh, J. Yoh, C. Yosef, T. Yoshida, I. Yu, S. Yu, Z. Yu, A. Zanetti, F. Zetti, and S. Zucchelli

Subjects
Physics, Particle physics, Large Hadron Collider, High Energy Physics::Phenomenology, Higgs boson, General Physics and Astronomy, High Energy Physics::Experiment, Technicolor, Elementary particle, Supersymmetry, Collider Detector at Fermilab, Standard Model, Higgs sector
Abstract

We present the results of a search for neutral Higgs bosons produced in association with b quarks in pp-->bb(phi)-->bbb final states with 91+/-7 pb(-1) of pp collisions at sqrt[s] = 1.8 TeV recorded by the Collider Detector at Fermilab. We find no evidence of such a signal and the data are interpreted in the context of the neutral Higgs sector of the minimal supersymmetric extension of the standard model. With basic parameter choices for the supersymmetric scale and the stop-quark mixing, we derive 95% C.L. lower mass limits for neutral Higgs bosons for tan(beta) values in excess of 35.

Published
2001
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44. Production ofχc1andχc2inpp¯Collisions ats=1.8TeV

Author

F. Palmonari, A. Safonov, R. Madrak, C. Nelson, L. Malferrari, R. Thurman-Keup, S. Wolinski, Cyp Ngan, S. Nahn, J. Mayer, J. Strologas, J. D. Lewis, M. Kirk, G. Velev, M. P. Schmidt, E. Moore, A. Rakitine, M. Shimojima, T. Le Compte, H. Wenzel, Douglas Benjamin, H. Sato, P. F. Derwent, P. Koehn, Kostantinos Kordas, R. E. Hughes, M. Mangano, Chunhui Chen, M. Brozovic, Petar Maksimovic, S. Baroiant, M. Lancaster, S. Bailey, A. Gordon, D. Winn, T. Kuwabara, Minu Kim, P. Azzi-Bacchetta, G. Latino, C. Pagliarone, S. Galeotti, Robin Erbacher, Jane Nachtman, Jacobo Konigsberg, Joel Goldstein, W. Carithers, S. Murgia, Aw Chan, M. Gold, J. Berryhill, W-M. Yao, J. Wolinski, Duncan Carlsmith, B. Flaugher, Tong Gao, C. Bromberg, W. Caskey, L. Demortier, Y. C. Chen, M. T. Cheng, A. Nomerotski, P. Gris, S. Lusin, A. M. Lee, W. Hao, Michael Schmitt, J. Incandela, K. T. Pitts, F. Happacher, P. T. Chang, Robert M Harris, R. J. Miller, A. Mukherjee, A. Brandl, A. Solodsky, J. G. Loken, Dario Bisello, A. Bhatti, E. Hafen, A. G. Clark, M. L. Chu, D. Dagenhart, Q. Fan, A. Tollestrup, Mosè Mariotti, T. Devlin, J. Conway, G. Pope, A. M. Walsh, John Huth, N. B. Wallace, Andrea Castro, J. W. Chapman, D. Khazins, J. Lys, P. Murat, Stefano Belforte, Henrik Jeldtoft Jensen, R. Roser, F. Azfar, Y. Iwata, G. Signorelli, Daniela Bortoletto, E. Kovacs, T. Ohmoto, P. Schlabach, F. Strumia, Andrea Bocci, Tommaso Dorigo, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, Hajin Kim, M. Mishina, H. H. Williams, M. Cordelli, G. Busetto, Brian L Winer, Y. Gotra, J. Cassada, J. Tseng, C. Ferretti, G. Introzzi, A. Stefanini, D. Lucchesi, S. Tkaczyk, David Stuart, K. Karr, R. G. Feild, A. Bodek, L. Ristori, J. Iwai, C. Yosef, A. Meyer, Maxwell Chertok, R. Culbertson, R. G. Wagner, C. R. Hall, Anindya Roy, N. Eddy, Wendy Taylor, R. Vilar, G. Bauer, Alessandro Cerri, J. A.J. Matthews, F. de Jongh, R. J. Hollebeek, Fumihiko Ukegawa, J. I. Lamoureux, Mark Kruse, A. B. Wicklund, W. K. Sakumoto, J. F. de Troconiz, P. Tamburello, A. D. Hardman, F. D. Snider, T. Moulik, J. Cranshaw, F. Ptohos, A. Robinson, W. Trischuk, W. J. Robertson, S. P. Pappas, F. Zetti, T. Watanabe, J. B. Liu, Z. Yu, Luca Scodellaro, J. Boudreau, R. D. Kennedy, G. W. Foster, D. Glenzinski, K. Kondo, Hiroshi Ikeda, A. Korn, Y. Bonushkin, David Saltzberg, K. L. Byrum, P. Giromini, Anna Zanetti, H. Kasha, A. Scribano, Nicola Bacchetta, A. Munar, G. P. Yeh, S. Wolbers, D. W. Gerdes, C. Grosso-Pilcher, Marjorie Shapiro, Paul Tipton, B. Bevensee, J.I. Friedman, A. J. Slaughter, F. Bedeschi, Andrea Sansoni, Ivan-Kresimir Furic, S. Donati, W. Bokhari, E. E. Schmidt, K. D. Hoffman, H. Toyoda, C. H. Wang, T. Handa, G. Pauletta, S. Vejcik, G. Piacentino, K. Takikawa, T. Ohsugi, R. C. Webb, M. Campbell, D. Waters, P. Giannetti, Igor Volobouev, M. J. Shochet, Tony Liss, E. Buckley-Geer, Manfred Paulini, P. Sphicas, P. Amaral, D. Reher, J. Budagov, R. L. Lander, T. L. Watts, J. Siegrist, Umesh Joshi, J. Lancaster, S. H. Kim, R. Handler, Y. S. Chung, P. Gatti, H. Nakada, M. Dell'Orso, T. Takano, S. Miscetti, Riccardo Paoletti, M. Binkley, R. Vidal, H. Niu, N. Bruner, M. G. Albrow, S. Zucchelli, S. Dell'Agnello, P. Sinervo, R. E. Blair, F. Rimondi, Timothy Knight Nelson, T. Affolder, Virgil E Barnes, P. F. Shepard, S. H. Oh, T. Kaneko, R. Kephart, W. Ashmanskas, Paolo Calafiura, S. Lami, T. Shah, Teresa Rodrigo, K. Lee, Jay Dittmann, D. Cauz, Kevin Einsweiler, Christoph Paus, I. Yu, T. J. Phillips, P. K. Teng, T. Wilkes, Gino Bolla, J. P. Berge, C. Green, Saverio D'Auria, J. Carlson, Roger Moore, M. H. Kirby, Christina Mesropian, Yongsun Kim, N. Moggi, Frank Hartmann, Guenakh Mitselmakher, A. Barbaro-Galtieri, P. Lukens, D. Vucinic, F. Semeria, P. S. Chang, Alan Sill, Th. Müller, Louis Lyons, S. R. Amendolia, K. Sliwa, T. Shibayama, V. Papadimitriou, L. Christofek, K. Anikeev, T. A. Keaffaber, Y. Morita, S. C. van den Brink, M. Loreti, G. Bellettini, J. Wahl, T. Suzuki, C. Sanchez, P. N. Singh, Yanwen Liu, Avraham Yagil, A. Menzione, J. Valls, D. Wolinski, D. Errede, Daijin Kim, K. Kelley, S. Leone, Beom Jun Kim, Itsuo Nakano, Michele Gallinaro, A. Pompos, A. Semenov, G. Martignon, S. Klimenko, L. Santi, C. Haber, L. Rosenson, L. Groer, H. S. Budd, Alan Garfinkel, K. Kurino, Y. Kato, D. Neuberger, G. Guillian, P. McIntyre, A. S. Thompson, A. Heiss, I. Fiori, A. W. Scott, D. Partos, J. Guimaraes Da Costa, E. McKigney, S. Worm, J. P. Fernandez, R. Takashima, D. Amidei, A. T. Goshaw, Catherine Newman-Holmes, Andrew Beretvas, Richard Dante St Denis, James Proudfoot, M. Riveline, R. Oishi, I. V. Gorelov, T. Speer, L. E. Kirsch, Y. Seiya, M. Popovic, M. Lindgren, James Bensinger, B. Tannenbaum, Hiroto Kambara, L. Pescara, N. Lai, J. Wyss, G. Chiarelli, Kazuhiko Hara, Kenneth Bloom, L. Holloway, Leonard Spiegel, I.E. Chirikov-Zorin, K. Terashi, Nicola Turini, M. W. Bailey, S. Errede, J. Patrick, A. T. Laasanen, M. M. Deninno, Jay Hauser, Matthew Jones, W. H. Bell, R. D. Field, James D. Olsen, J. Spalding, G. P. Grim, Masaaki Tanaka, W. C. Wester, M. Tecchio, A. J. Martin, L. Pondrom, E. Wicklund, H. Minato, Fedor Prokoshin, Yasuo Fukui, J. E. Elias, J. N. Bellinger, T. Okusawa, P. Mazzanti, Daniel P Cronin-Hennessy, J. S. Miller, Kevin Burkett, Kenichi Hatakeyama, S. Blusk, Jochen Jens Heinrich, J. Done, Shin-Shan Yu, J. Huston, M. Franklin, A. Ribon, Pierre Savard, J. C. Freeman, A. Köngeter, C. I. Ciobanu, J. Steele, Andrey Korytov, V. Glagolev, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, Craig Blocker, Kaori Maeshima, T. Vaiciulis, P. Wilson, M. Menguzzato, S. E. Kuhlmann, G. Chlachidze, Christopher Neu, J. Yoh, W. Orejudos, Frank Chlebana, A. Akopian, Maurice Garcia-Sciveres, A. Reichold, T. Yoshida, M. Guenther, Sally Seidel, M. Mulhearn, W. Riegler, R. Cropp, F. Spinella, R. L. Wagner, K. Goulianos, P. de Barbaro, O. Pukhov, K. Ragan, S. Segler, Maria Spiropulu, Matthew Herndon, R. J. Tesarek, S. Rolli, Benjamin Kilminster, C. Smith, Barry Blumenfeld, C. Holck, E. James, T. Nakaya, H. Akimoto, M. J. Wang, T. Miao, R. M. Haas, S. R. Hahn, Xin Wu, J. Antos, Konstanty Sumorok, N. S. Lockyer, Roberto Rossin, Joe Kroll, K. S. McFarland, S. Tether, M. Bishai, K. Tollefson, Stephan Lammel, T. Kikuchi, P. Yeh, Lawrence Nodulman, A. Connolly, T. Asakawa, G. Punzi, E. Engels, M. Barone, and M. Kelly

Subjects
Physics, Particle physics, Meson, General Physics and Astronomy, High Energy Physics::Experiment, Nuclear Experiment
Abstract

We have measured the ratio of prompt production rates of the charmonium states {chi}{sub c1} and {chi}{sub c2} in 110 pb{sup -1} of p{ovr p} collisions at sqrt[s] = 1.8 TeV. The photon from their decay into J/{psi}{gamma} is reconstructed through conversion into e{sup +}e{sup -} pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections {sigma}{sub {chi}{sub c2}}/{sigma}{sub {chi}{sub c1}} = 0.96{+-}0.27(stat){+-}0.11(syst) for events with p{sub {tau}}(J/{psi})>4.0 GeV/c, |{eta}(J/{psi})| 1.0 GeV/c.

Published
2001
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45. First Measurement of the RatioB(t→Wb)/B(t→Wq)and Associated Limit on the Cabibbo-Kobayashi-Maskawa Element|Vtb

Author

M. J. Shochet, S. Bailey, A. Connolly, T. Asakawa, G. Velev, P. Sphicas, P. K. Teng, B. Flaugher, H. Sato, Michael Schmitt, J. Incandela, M. L. Chu, Virgil E Barnes, Arshad Saleem Bhatti, G. Punzi, E. Engels, J. Conway, C. Pagliarone, S. Galeotti, P. Schlabach, Mosè Mariotti, G. F. Tartarelli, C. Green, G. Pope, J. Cassada, V. Nagaslaev, T. Kaneko, J. Wolinski, M. Barone, M. Kelly, T. Kuwabara, P. S. Chang, S. Tkaczyk, David Stuart, W. K. Sakumoto, R. J. Miller, A. Nomerotski, R. G. Feild, Robert M Harris, C. Grosso-Pilcher, A. Menzione, A. Mukherjee, J. G. Loken, W. Carithers, S. Murgia, G. P. Yeh, Andrea Castro, G. W. Foster, Andrea Bocci, D. Glenzinski, Tommaso Dorigo, F. Palmonari, Hiroto Kambara, Q. Fan, A. Tollestrup, C. Ferretti, S. Lami, T. Shah, Tony Liss, T. Devlin, L. Malferrari, D. Khazins, Kenneth Bloom, R. Thurman-Keup, Cyp Ngan, J. P. Berge, M. J. Wang, T. Miao, R. M. Haas, R. Vilar, Stephan Lammel, Paolo Calafiura, Teresa Rodrigo, D. Lucchesi, K. Lee, T. J. Phillips, K. Karr, K. Anikeev, F. Zetti, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, S. Nahn, J. Berryhill, L. Christofek, D. Errede, N. Eddy, P. Lukens, Y. Morita, R. J. Hollebeek, R. D. Field, R. Vidal, H. Niu, N. Bruner, J. I. Lamoureux, M. Brozovic, T. Kikuchi, P. Yeh, P. F. Shepard, S. H. Oh, Xin Wu, E. Moore, P. F. Derwent, Minu Kim, T. Suzuki, C. Sanchez, V. Papadimitriou, James Bensinger, Daijin Kim, M. Lancaster, Y. Kato, D. Neuberger, G. Guillian, R. Takashima, J. Guimaraes Da Costa, C. I. Ciobanu, N. Lai, Kazuhiko Hara, Lawrence Nodulman, G. Piacentino, R. D. Kennedy, Itsuo Nakano, T. L. Watts, N. S. Lockyer, Joel Goldstein, A. Pompos, A. S. Thompson, A. Heiss, Roberto Rossin, L. Groer, Alan Garfinkel, R. L. Wagner, Catherine Newman-Holmes, P. McIntyre, A. Scribano, Y. C. Chen, A. Gordon, J. Siegrist, F. Ptohos, Tong Gao, W. J. Robertson, I. V. Gorelov, Christoph Paus, J. Carlson, S. Miscetti, D. Dagenhart, M. Lindgren, T. Speer, R. Kephart, Matthew Jones, Joe Kroll, J. Steele, K. Goulianos, M. Riveline, P. Gris, N. Moggi, Frank Hartmann, Fedor Prokoshin, Andrey Korytov, B. Tannenbaum, T. Watanabe, J. D. Lewis, J. Tseng, Y. Iwata, S. Lusin, J. Wyss, F. Happacher, P. T. Chang, Thomas LeCompte, Dario Bisello, S. C. van den Brink, Alan Sill, M. Kirk, L. Pescara, D. O. Litvintsev, V. Glagolev, J. Strologas, Yasuo Fukui, Daniela Bortoletto, W. Bokhari, J. Boudreau, R. Madrak, G. Bellettini, James D. Olsen, E. Hafen, J. Spalding, T. Okusawa, J. Valls, P. Mazzanti, J. F. de Troconiz, G. Chiarelli, C. Nelson, P. Koehn, G. Martignon, K. S. McFarland, A. Korn, D. Wolinski, M. Campbell, D. Waters, P. Giannetti, M. M. Deninno, S. Tether, Kostantinos Kordas, Y. Bonushkin, P. Tamburello, L. Holloway, David Saltzberg, K. Kelley, S. Leone, J. Lancaster, R. Handler, Y. S. Chung, M. Bishai, M. Binkley, G. P. Grim, Masaaki Tanaka, R. E. Hughes, H. S. Budd, J. Done, J. Huston, M. G. Albrow, K. Tollefson, A. Robinson, S. Baroiant, Chunhui Chen, Petar Maksimovic, S. Vejcik, Hiroshi Ikeda, T. Takano, S. Dell'Agnello, S. E. Kuhlmann, Douglas Benjamin, W. C. Wester, J. Patrick, G. Chlachidze, D. Winn, P. de Barbaro, K. Takikawa, R. C. Webb, J. Wahl, Yanwen Liu, O. Pukhov, F. DeJongh, R. Oishi, Robin Erbacher, W-M. Yao, F. Strumia, Christopher Neu, Igor Volobouev, L. Demortier, M. Dell'Orso, A. G. Clark, S. Wolinski, C. Smith, J. Yoh, Andrea Sansoni, Ivan-Kresimir Furic, C. Holck, S. Donati, A. Meyer, Jacobo Konigsberg, C. Haber, J. Mayer, K. Ragan, Guenakh Mitselmakher, P. Gatti, M. Tecchio, B. A. Barnett, Giorgio Apollinari, A. M. Lee, E. James, W. Ashmanskas, M. T. Cheng, Teruki Kamon, Craig Blocker, Louis Lyons, M. Shimojima, W. Hao, A. Solodsky, M. Cordelli, Kaori Maeshima, G. Busetto, Brian L Winer, T. Vaiciulis, Sally Seidel, R. G. Wagner, P. N. Singh, P. Wilson, Andrew Beretvas, A. Brandl, M. Menguzzato, S. P. Pappas, Luca Scodellaro, J. B. Liu, John Huth, M. W. Bailey, L. Rosenson, P. Amaral, M. Mulhearn, W. Riegler, C. R. Hall, S. Zucchelli, R. E. Blair, R. Cropp, K. L. Byrum, J. W. Chapman, F. Rimondi, Mark Kruse, F. Spinella, M. Gold, H. H. Williams, Kenichi Hatakeyama, E. Kovacs, T. Ohmoto, J. P. Fernandez, Anindya Roy, L. E. Kirsch, G. Introzzi, A. Stefanini, Maxwell Chertok, M. Franklin, P. Giromini, Anna Zanetti, Paul Tipton, Z. Yu, Marjorie Shapiro, A. J. Slaughter, D. Reher, E. Buckley-Geer, J. Budagov, Riccardo Paoletti, P. Sinervo, J. C. Freeman, R. L. Lander, B. Bevensee, H. Kasha, Jane Nachtman, Jay Dittmann, D. Cauz, A. Köngeter, Michele Gallinaro, Richard Dante St Denis, K. T. Pitts, S. Worm, D. Amidei, A. T. Goshaw, I.E. Chirikov-Zorin, A. J. Martin, L. Pondrom, E. Wicklund, S. Errede, J. E. Elias, F. Azfar, W. H. Bell, J. Lys, Manfred Paulini, H. Nakada, R. Roser, Saverio D'Auria, O. Lobban, Yongsun Kim, J.I. Friedman, C. H. Wang, L. Santi, Timothy Knight Nelson, Beom Jun Kim, N. B. Wallace, A. Bodek, J. Iwai, C. Yosef, Alessandro Cerri, Umesh Joshi, S. H. Kim, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, E. E. Schmidt, K. D. Hoffman, H. Toyoda, T. Handa, H. Wenzel, G. Latino, Aw Chan, Duncan Carlsmith, Stefano Belforte, Henrik Jeldtoft Jensen, L. Ristori, R. Culbertson, W. Trischuk, Nicola Bacchetta, F. Bedeschi, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, A. Safonov, Avraham Yagil, Gino Bolla, M. P. Schmidt, A. Rakitine, A. Semenov, P. Azzi-Bacchetta, C. Bromberg, E. McKigney, S. Blusk, Jochen Jens Heinrich, Y. Seiya, M. Popovic, P. Murat, Leonard Spiegel, Shin-Shan Yu, A. Ribon, G. Bauer, A. D. Hardman, F. D. Snider, T. Moulik, J. Cranshaw, S. Wolbers, D. W. Gerdes, Pierre Savard, Kevin Einsweiler, T. Wilkes, M. Mangano, Wendy Taylor, J. A.J. Matthews, Roger Moore, M. H. Kirby, W. Caskey, Christina Mesropian, A. M. Walsh, K. Kondo, A. Munar, G. Pauletta, I. Yu, T. Shibayama, M. Loreti, K. Terashi, Nicola Turini, A. T. Laasanen, Jay Hauser, H. Minato, J. N. Bellinger, Daniel P Cronin-Hennessy, J. S. Miller, Kevin Burkett, S. Segler, Maria Spiropulu, Matthew Herndon, R. J. Tesarek, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, T. Nakaya, H. Akimoto, S. R. Hahn, J. Antos, Konstanty Sumorok, W. Orejudos, Frank Chlebana, A. Akopian, Maurice Garcia-Sciveres, A. Reichold, T. Yoshida, M. Guenther, and T. Ohsugi

Subjects
Physics, Particle physics, Unitarity, Cabibbo–Kobayashi–Maskawa matrix, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, High Energy Physics::Experiment, Fermilab, Three generations, Collider Detector at Fermilab, Silicon vertex detector
Abstract

We present the first measurement of the ratio of branching fractions R equivalent to B(t --> Wb)/B(t --> Wq) from pa collisions at roots = 1.8 TeV. The data set corresponds to 109 pb(-1) of data recorded by the Collider Detector at Fermilab during the 1992-95 Tevatron run. We measure R = 0.94(-0.24)(+0.31)(stat + syst) or R > 0.61 (0.56) at 90% (95)% C.L., in agreement with the standard model predictions. This measurement yields a limit on the Cabibbo-Kobayashi-Maskawa quark mixing matrix element \V-tb\ under the assumption of three generations and unitarity.

Published
2001
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46. Measurement of the Decay Amplitudes ofB0→J/ψK*0andBs0→J/ψφDecays

Author

Stefano Belforte, W. Carithers, S. Murgia, Henrik Jeldtoft Jensen, P. Sphicas, L. Ristori, P. Schlabach, J. Berryhill, L. Malferrari, Avraham Yagil, J. Cassada, Tong Gao, D. Dagenhart, Virgil E Barnes, R. Vidal, H. Niu, A. Cerri, G. W. Foster, F. Ptohos, Nicola Bacchetta, J. Wyss, G. Chiarelli, E. McKigney, J. Wahl, N. Bruner, Yanwen Liu, T. Kaneko, F. Bedeschi, P. S. Chang, Sally Seidel, M. M. Deninno, J. D. Lewis, J. Tseng, M. Brozovic, Minu Kim, W. J. Robertson, M. Kirk, Joel Goldstein, P. F. Shepard, S. H. Oh, Leonard Spiegel, M. Tecchio, Kevin Einsweiler, T. Le Compte, A. Menzione, P. Koehn, S. Lusin, C. Smith, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, Wendy Taylor, J. A.J. Matthews, Y. Iwata, R. E. Hughes, T. Watanabe, Chunhui Chen, Petar Maksimovic, S. Tkaczyk, David Stuart, R. G. Feild, Tomoko Yoshida, J. Boudreau, G. P. Yeh, W. Orejudos, Frank Chlebana, D. Winn, M. Riveline, Tony Liss, A. Safonov, J. Proudfoot, M. Mulhearn, W. Riegler, Paolo Calafiura, Teresa Rodrigo, Itsuo Nakano, K. Lee, T. J. Phillips, A. Korn, S. Wolinski, G. Piacentino, G. Signorelli, G. Velev, Daniela Bortoletto, C. I. Ciobanu, J. R. Bensinger, L. Groer, Alan Garfinkel, Roger Moore, M. H. Kirby, W. Bokhari, C. Holck, F. Strumia, P. McIntyre, S. Lami, Y. Bonushkin, R. Takashima, A. Akopian, David Saltzberg, M. Garcia-Sciveres, R. J. Miller, Y. Morita, E. S. Hafen, K. Kondo, P. Lukens, A. Mukherjee, E. James, M. Campbell, V. Papadimitriou, P. Murat, M. P. Schmidt, T. Shah, S. Miscetti, D. Waters, P. Giannetti, H. Sato, A. Munar, G. Pauletta, A. Rakitine, C. H. Wang, R. S. Guo, J. Strologas, L. Nodulman, Andrea Sansoni, S. Donati, P. F. Derwent, R. Handler, Y. S. Chung, Andrea Bocci, A. Reichold, P. Azzi-Bacchetta, F. Spinella, Daijin Kim, M. Lancaster, M. Lindgren, S. Dell'Agnello, B. Tannenbaum, J. Steele, G. Bauer, A. D. Hardman, F. D. Snider, T. Shibayama, K. Anikeev, C. Bromberg, R. L. Wagner, K. Goulianos, G. Bellettini, M. Shimojima, G. Martignon, T. Affolder, J. Cranshaw, Hiroto Kambara, J. P. Berge, I. Yu, Tommaso Dorigo, Andrey Korytov, Kenneth Bloom, M. Guenther, D. P. Benjamin, K. Takikawa, D. Errede, T. Ohsugi, T. Kuwabara, L. Christofek, A. Heiss, R. Vilar, P. de Barbaro, P. Gatti, W. Ashmanskas, V. V. Glagolev, C. Pagliarone, S. Galeotti, S. Vejcik, T. Takano, S. Wolbers, O. Pukhov, W-M. Yao, Y. Kato, D. Neuberger, G. Guillian, J. Guimaraes Da Costa, Louis Lyons, Robert M Harris, T. Suzuki, M. J. Shochet, M. Mangano, Stephan Lammel, A. Robinson, M. Loreti, D. W. Gerdes, Gino Bolla, C. Mesropian, A. Pompos, R. D. Field, J. Wolinski, L. Holloway, J. Patrick, K. Terashi, Nicola Turini, M. Gold, F. Zetti, A. Byon-Wagner, Tetsuo Arisawa, A. Semenov, M. L. Chu, A. Nomerotski, Mosè Mariotti, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, A. T. Laasanen, K. Kurino, R. Cropp, T. Kikuchi, J. W. Chapman, L. Pescara, I. Fiori, M. Cordelli, A. W. Scott, D. Partos, G. Busetto, Brian L Winer, Catherine Newman-Holmes, Andrew Beretvas, Andrea Castro, S. Bailey, P. Yeh, William Trischuk, T. Speer, A. M. Walsh, S. Blusk, Jochen Jens Heinrich, T. Nakaya, H. Akimoto, N. Eddy, R. G. Wagner, F. de Jongh, Joe Kroll, J. G. Loken, E. Kovacs, T. Ohmoto, P. K. Teng, B. Flaugher, S. P. Pappas, S. E. Kuhlmann, P. Nicolaidi, C. Green, T. L. Watts, Michael Schmitt, J. Incandela, C. Haber, J. B. Liu, S. R. Hahn, D. Khazins, C. Ferretti, W. K. Sakumoto, J. Conway, R. K. Plunkett, R. J. Hollebeek, K. Karr, G. Chlachidze, G. Pope, Y. Seiya, A. Connolly, P. Amaral, D. Lucchesi, S. Geer, Jacobo Konigsberg, F. Palmonari, R. Thurman-Keup, T. Asakawa, S. Zucchelli, Shin-Shan Yu, R. Kephart, M. T. Cheng, C. Grosso-Pilcher, Cyp Ngan, A. Ribon, R. E. Blair, F. Rimondi, J. Antos, L. Demortier, A. Scribano, N. Moggi, Frank Hartmann, S. Nahn, A. Solodsky, G. Punzi, E. Engels, J. Yoh, Matthew Jones, J. I. Lamoureux, K. S. McFarland, Alan Sill, M. Musy, S. Tether, Konstanty Sumorok, B. A. Barnett, Giorgio Apollinari, J. Valls, D. Wolinski, E. Moore, K. Kelley, S. Leone, M. Barone, M. Kelly, Jay Hauser, James D. Olsen, Teruki Kamon, J. F. de Troconiz, P. Tamburello, Craig Blocker, A. M. Lee, H. S. Budd, J. Spalding, A. Gordon, Masaaki Tanaka, H. Minato, S. Segler, Kaori Maeshima, Hiroshi Ikeda, K. Tollefson, W. C. Wester, R. C. Webb, D. Amidei, Igor Volobouev, J. N. Bellinger, M. Binkley, T. Vaiciulis, Daniel P Cronin-Hennessy, W. Hao, J. S. Miller, Kevin Burkett, P. Wilson, A. Brandl, M. G. Albrow, M. Menguzzato, Maria Spiropulu, Matthew Herndon, John Huth, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, H. H. Williams, M. J. Wang, T. Miao, R. M. Haas, G. Introzzi, A. Stefanini, M. Atac, Xin Wu, D. Reher, J. Budagov, N. S. Lockyer, Roberto Rossin, R. D. Kennedy, J. Siegrist, R. Madrak, C. Nelson, Jane Nachtman, K. T. Pitts, F. Azfar, Manfred Paulini, H. Nakada, J. Carlson, S. C. van den Brink, R. Demina, Yongsun Kim, Y. C. Chen, M. Dell'Orso, R. Oishi, L. Santi, S. Worm, A. T. Goshaw, K. Ragan, Guenakh Mitselmakher, Luca Scodellaro, S. Errede, K. L. Byrum, P. Giromini, M. W. Bailey, Anna Zanetti, H. Kasha, A. Meyer, P. N. Singh, Maxwell Chertok, L. Rosenson, W. Erdmann, Z. Yu, Marjorie Shapiro, A. J. Slaughter, E. Buckley-Geer, Riccardo Paoletti, P. Sinervo, L. E. Kirsch, A. G. Clark, J. Lys, R. Roser, J.I. Friedman, C. R. Hall, J. Mayer, Kenichi Hatakeyama, C. Paus, M. Franklin, Mark Kruse, Paul Tipton, J. C. Freeman, B. Bevensee, K. Kordas, Jay Dittmann, D. Cauz, A. Köngeter, Michele Gallinaro, I.E. Chirikov-Zorin, A. J. Martin, L. Pondrom, E. Wicklund, J. E. Elias, B. J. Kim, R. Culbertson, N. B. Wallace, A. Bodek, J. Iwai, C. Yosef, Umesh Joshi, J. Cooper, S. H. Kim, H. Wenzel, G. Latino, D. Theriot, Th. Müller, Aw Chan, Duncan Carlsmith, S. R. Amendolia, K. Sliwa, S. Klimenko, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, E. E. Schmidt, K. D. Hoffman, H. Toyoda, N. Lai, Kazuhiko Hara, T. Handa, Q. Fan, Fedor Prokoshin, A. Tollestrup, T. Devlin, Pierre Savard, M. Popovic, Yasuo Fukui, T. Okusawa, P. Mazzanti, J. Done, and J. Huston

Subjects
Physics, Amplitude, Tevatron, General Physics and Astronomy, Parity (physics), Atomic physics, Polarization (waves)
Abstract

An angular analysis of B{sup 0}{yields}J/{psi}K*{sup 0} and B{sup 0}{sub s}{yields}J/{psi}{phi} has been used to determine the decay amplitudes with parity-even longitudinal (A{sub 0}) and transverse (A{sub {parallel}}) polarization and parity-odd transverse (A{sub {perpendicular}}) polarization. The measurements are based on 190 B{sup 0} and 40 B{sup 0}{sub s} candidates obtained from 89 pb{sup -1} of p{ovr p} collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with |A{sub 0}|{sup 2} = 0.59{+-}0.06{+-}0.01 for B{sup 0} and |A{sub 0}|{sup 2} = 0.61{+-}0.14{+-}0.02 for B{sup 0}{sub s} decays. The parity-odd amplitude is found to be small with |A{sub {perpendicular}}|{sup 2} = 0.13{sub -0.09}{sup +0.12}{+-}0.06 for B{sup 0} and |A{sub {perpendicular}}|{sup 2} = 0.23{+-}0.19{+-}0.04 for B{sup 0}{sub s} decays.

Published
2000
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47. Direct Measurement of theWBoson Width inpp¯Collisions at√s=1.8TeV

Author

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, S. R. Amendolia, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, M. Atac, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, M. W. Bailey, S. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, B. Bevensee, A. Bhatti, M. Binkley, D. Bisello, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandl, S. van den Brink, C. Bromberg, M. Brozovic, N. Bruner, E. Buckley-Geer, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, P. Calafiura, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, J. Cassada, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M.-T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, C. I. Ciobanu, A. G. Clark, A. Connolly, J. Conway, J. Cooper, M. Cordelli, J. Cranshaw, D. Cronin-Hennessy, R. Cropp, R. Culbertson, D. Dagenhart, F. DeJongh, S. Dell'Agnello, M. Dell'Orso, R. Demina, L. Demortier, M. Deninno, P. F. Derwent, T. Devlin, J. R. Dittmann, S. Donati, J. Done, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, E. Engels, W. Erdmann, D. Errede, S. Errede, Q. Fan, R. G. Feild, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, H. Frisch, Y. Fukui, S. Galeotti, M. Gallinaro, T. Gao, M. Garcia-Sciveres, A. F. Garfinkel, P. Gatti, C. Gay, S. Geer, D. W. Gerdes, P. Giannetti, P. Giromini, V. Glagolev, M. Gold, J. Goldstein, A. Gordon, A. T. Goshaw, Y. Gotra, K. Goulianos, C. Green, L. Groer, C. Grosso-Pilcher, M. Guenther, G. Guillian, J. Guimaraes da Costa, R. S. Guo, R. M. Haas, C. Haber, E. Hafen, S. R. Hahn, C. Hall, T. Handa, R. Handler, W. Hao, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, A. Heiss, M. Herndon, B. Hinrichsen, K. D. Hoffman, C. Holck, R. Hollebeek, L. Holloway, R. Hughes, J. Huston, J. Huth, H. Ikeda, J. Incandela, G. Introzzi, J. Iwai, Y. Iwata, E. James, H. Jensen, M. Jones, U. Joshi, H. Kambara, T. Kamon, T. Kaneko, K. Karr, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, M. Kelly, R. D. Kennedy, R. Kephart, D. Khazins, T. Kikuchi, B. Kilminster, M. Kirby, M. Kirk, B. J. Kim, D. H. Kim, H. S. Kim, M. J. Kim, S. H. Kim, Y. K. Kim, L. Kirsch, S. Klimenko, P. Koehn, A. Köngeter, K. Kondo, J. Konigsberg, K. Kordas, A. Korn, A. Korytov, E. Kovacs, J. Kroll, M. Kruse, S. E. Kuhlmann, K. Kurino, T. Kuwabara, A. T. Laasanen, N. Lai, S. Lami, S. Lammel, J. I. Lamoureux, M. Lancaster, G. Latino, T. LeCompte, A. M. Lee, K. Lee, S. Leone, J. D. Lewis, M. Lindgren, T. M. Liss, J. B. Liu, Y. C. Liu, N. Lockyer, J. Loken, M. Loreti, D. Lucchesi, P. Lukens, S. Lusin, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, M. Mariotti, G. Martignon, A. Martin, J. A. J. Matthews, J. Mayer, P. Mazzanti, K. S. McFarland, P. McIntyre, E. McKigney, M. Menguzzato, A. Menzione, C. Mesropian, T. Miao, R. Miller, J. S. Miller, H. Minato, S. Miscetti, M. Mishina, G. Mitselmakher, N. Moggi, E. Moore, R. Moore, Y. Morita, A. Mukherjee, T. Muller, A. Munar, P. Murat, S. Murgia, M. Musy, J. Nachtman, S. Nahn, H. Nakada, T. Nakaya, I. Nakano, C. Nelson, D. Neuberger, C. Newman-Holmes, C.-Y. P. Ngan, P. Nicolaidi, H. Niu, L. Nodulman, A. Nomerotski, S. H. Oh, T. Ohmoto, T. Ohsugi, R. Oishi, T. Okusawa, J. Olsen, W. Orejudos, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, S. P. Pappas, D. Partos, J. Patrick, G. Pauletta, M. Paulini, C. Paus, L. Pescara, T. J. Phillips, G. Piacentino, K. T. Pitts, R. Plunkett, A. Pompos, L. Pondrom, G. Pope, M. Popovic, F. Prokoshin, J. Proudfoot, F. Ptohos, O. Pukhov, G. Punzi, K. Ragan, A. Rakitine, D. Reher, A. Reichold, W. Riegler, A. Ribon, F. Rimondi, L. Ristori, W. J. Robertson, A. Robinson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, A. Safonov, W. K. Sakumoto, D. Saltzberg, A. Sansoni, L. Santi, H. Sato, P. Savard, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scott, A. Scribano, S. Segler, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, T. Shah, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, J. Siegrist, G. Signorelli, A. Sill, P. Sinervo, P. Singh, A. J. Slaughter, K. Sliwa, C. Smith, F. D. Snider, A. Solodsky, J. Spalding, T. Speer, P. Sphicas, F. Spinella, M. Spiropulu, L. Spiegel, J. Steele, A. Stefanini, J. Strologas, F. Strumia, D. Stuart, K. Sumorok, T. Suzuki, T. Takano, R. Takashima, K. Takikawa, P. Tamburello, M. Tanaka, B. Tannenbaum, W. Taylor, M. Tecchio, P. K. Teng, K. Terashi, S. Tether, D. Theriot, R. Thurman-Keup, P. Tipton, S. Tkaczyk, K. Tollefson, A. Tollestrup, H. Toyoda, W. Trischuk, J. F. de Troconiz, J. Tseng, N. Turini, F. Ukegawa, T. Vaiciulis, J. Valls, S. Vejcik, G. Velev, R. Vidal, R. Vilar, I. Volobouev, D. Vucinic, R. G. Wagner, R. L. Wagner, J. Wahl, N. B. Wallace, A. M. Walsh, C. Wang, C. H. Wang, M. J. Wang, T. Watanabe, D. Waters, T. Watts, R. Webb, H. Wenzel, W. C. Wester, A. B. Wicklund, E. Wicklund, H. H. Williams, P. Wilson, B. L. Winer, D. Winn, S. Wolbers, D. Wolinski, J. Wolinski, S. Wolinski, S. Worm, X. Wu, J. Wyss, A. Yagil, W. Yao, G. P. Yeh, P. Yeh, J. Yoh, C. Yosef, T. Yoshida, I. Yu, S. Yu, Z. Yu, A. Zanetti, F. Zetti, and S. Zucchelli

Subjects
Physics, Particle physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, Tevatron, General Physics and Astronomy, Particle accelerator, Electron, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, 010306 general physics, Collider, Collider Detector at Fermilab
Abstract

This Letter describes a direct measurement of the W boson total decay width, {Gamma}{sub W}, using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90 pb{sup -1}, collected during the 1994-1995 run of the Fermilab Tevatron p{anti p} collider. The width is determined by normalizing predicted signal and background distributions to 49 844 W {yields}e{nu} candidates and 21 806 W{yields}{mu}{nu} candidates in the transverse-mass region M{sub T}

Published
2000
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48. Measurement ofJ/ψandψ(2S)Polarization inpp¯Collisions at√s=1.8TeV

Author

W. Carithers, S. Murgia, A. Byon-Wagner, Tetsuo Arisawa, J. Berryhill, J. D. Lewis, A. Safonov, E. Scodellaro, P. Koehn, Kostantinos Kordas, R. E. Hughes, Chunhui Chen, Petar Maksimovic, Andrea Castro, D. Winn, X. Wu, S. Blusk, Jochen Jens Heinrich, Tong Gao, D. Khazins, N. Eddy, R. J. Hollebeek, J. Strologas, C. Smith, J. I. Lamoureux, James Bensinger, C. Holck, C. Pagliarone, K. Karr, Shin-Shan Yu, G. Velev, Sally Seidel, S. Galeotti, R. D. Kennedy, H. Sato, M. L. Chu, E. James, Jacobo Konigsberg, M. T. Cheng, J. Lys, J. Siegrist, Gino Bolla, Hajin Kim, M. Mishina, Mosè Mariotti, Y. Gotra, Fumihiko Ukegawa, Matthew Jones, James D. Olsen, A. Ribon, M. P. Schmidt, J. P. Berge, N. Lai, Kazuhiko Hara, Fedor Prokoshin, Yasuo Fukui, K. L. Byrum, A. Solodsky, P. Giromini, Anna Zanetti, H. Kasha, B. Hinrichsen, J. Wolinski, A. Nomerotski, A. Rakitine, P. Azzi-Bacchetta, Pierre Savard, Maxwell Chertok, D. Dagenhart, T. Kuwabara, P. De Barbara, Jane Nachtman, L. Christofek, J. Spalding, R. Roser, J.I. Friedman, C. Bromberg, J. G. Loken, T. Okusawa, P. Mazzanti, A. B. Wicklund, T. L. Watts, J. Wahl, A. Scribano, M. Mulhearn, W. Riegler, A. Tollestrup, Masaaki Tanaka, W. C. Wester, F. Strumia, J. Wyss, J. Done, F. DeJongh, A. Semenov, Stefano Belforte, S. E. Kuhlmann, P. Nicolaidi, T. Suzuki, J. Huston, E. E. Schmidt, G. Chiarelli, C. Ferretti, S. Lami, C. H. Wang, K. T. Pitts, T. Shah, Andrea Sansoni, J. Tseng, S. Donati, Joe Kroll, K. D. Hoffman, H. Toyoda, M. M. Deninno, D. Lucchesi, Henrik Jeldtoft Jensen, Jay Hauser, G. Chlachidze, Z. Yu, Marjorie Shapiro, P. Gatti, R. Cropp, Umesh Joshi, J. Cooper, J. Boudreau, K. Anikeev, A. Pompos, A. J. Slaughter, D. Errede, S. H. Kim, L. Ristori, F. Azfar, W-M. Yao, H. Minato, K. Kurino, Louis Lyons, A. Connolly, G. Piacentino, K. S. McFarland, S. Tether, F. Spinella, M. Gold, P. Schlabach, R. Kephart, T. Handa, E. Buckley-Geer, M. Binkley, Riccardo Paoletti, T. Asakawa, J. Cassada, W. Trischuk, M. Tecchio, A. Korn, Y. Kato, D. Neuberger, Beom Jun Kim, S.G. Klimenko, M. G. Albrow, J. Yoh, G. Guillian, Manfred Paulini, K. Tollefson, J. Guimaraes Da Costa, Y. Seiya, H. Nakada, M. Popovic, S. Miscetti, P. Sinervo, C. I. Ciobanu, H. Wenzel, N. Moggi, Frank Hartmann, David Saltzberg, S. Tkaczyk, Andrew Beretvas, Nicola Bacchetta, Catherine Newman-Holmes, J. N. Bellinger, G. Punzi, E. Engels, E. Kovacs, T. Ohmoto, Christoph Paus, J. Carlson, F. Bedeschi, David Stuart, S. C. van den Brink, Daniel P Cronin-Hennessy, Th. Müller, Alan Sill, Kenichi Hatakeyama, Yc Liu, R. G. Feild, M. Franklin, T. Speer, G. W. Foster, M. Musy, Yongsun Kim, S. R. Amendolia, K. Sliwa, S. Bailey, J. Steele, M. J. Wang, G. Bellettini, T. Miao, R. M. Haas, T. Affolder, M. Barone, J. S. Miller, Kevin Burkett, G. Martignon, M. Kelly, G. P. Yeh, P. Murat, Tony Liss, J. Valls, Andrey Korytov, W. K. Sakumoto, Wendy Taylor, J. A.J. Matthews, S. Wolinski, M. Cordelli, M. Brozovic, G. Busetto, Brian L Winer, L. Santi, R. L. Wagner, A. Barbaro-Galtieri, J. F. de Troconiz, P. Tamburello, Roger Moore, M. H. Kirby, D. Wolinski, Minu Kim, K. Kelley, S. Leone, G. Latino, D. Theriot, K. Goulianos, R. G. Wagner, R. Culbertson, N. B. Wallace, Stephan Lammel, Christina Mesropian, R. Oishi, R. S. Guo, B. Flaugher, P. F. Derwent, Paolo Calafiura, Teresa Rodrigo, K. Lee, T. J. Phillips, V. Glagolev, J. Mayer, N. S. Lockyer, Joel Goldstein, S. P. Pappas, Michael Schmitt, D. Vucinic, F. Semeria, J. C. Freeman, Hiroshi Ikeda, T. A. Keaffaber, Y. C. Chen, Roberto Rossin, H. S. Budd, J. Incandela, Y. Morita, M. Lancaster, M. Shimojima, Aw Chan, G. Bauer, A. D. Hardman, F. D. Snider, R. C. Webb, T. Shibayama, M. Loreti, I. Furie, A. Bodek, J. B. Liu, M. W. Bailey, R. J. Miller, J. Conway, S. Geer, J. Iwai, T. Kikuchi, S. Lusin, F. Happacher, P. T. Chang, J. Cranshaw, Igor Volobouev, P. Yeh, O. Pukhov, Dario Bisello, A. Bhatti, C. Yosef, A. Mukherjee, Alessandro Cerri, K. Ragan, G. Pope, K. Terashi, Nicola Turini, A. T. Laasanen, Lawrence Nodulman, E. Hafen, S. Wolbers, Duncan Carlsmith, P. Amaral, I. Fiori, A. W. Scott, D. W. Gerdes, B. A. Barnett, Giorgio Apollinari, F. Ptohos, S. Zucchelli, R. E. Blair, Andrea Bocci, A. Köngeter, F. Rimondi, Tommaso Dorigo, W. J. Robertson, Teruki Kamon, H. H. Williams, C. Grosso-Pilcher, G. Introzzi, A. Stefanini, T. Watanabe, D. Partos, Craig Blocker, R. Vilar, Kaori Maeshima, W. Bokhari, S. Vejcik, T. Takano, I.E. Chirikov-Zorin, M. Campbell, D. Waters, P. Giannetti, T. Vaiciulis, F. Zetti, M. Atac, Kevin Einsweiler, A. J. Martin, D. Reher, R. Handler, Q. Fan, L. Pondrom, E. Wicklund, James Proudfoot, Y. Bonusnkin, P. Wilson, M. Menguzzato, R. Vidal, J. E. Elias, S. Dell'Agnello, J. Budagov, H. Niu, N. Bruner, T. Devlin, T. Ohsugi, W. Orejudos, M. J. Shochet, Frank Chlebana, P. F. Shepard, A. Akopian, S. H. Oh, Maurice Garcia-Sciveres, A. Reichold, P. Lukens, T. Yoshida, M. Guenther, V. Papadimitriou, Daijin Kim, P. K. Teng, Itsuo Nakano, S. Segler, L. Groer, Alan Garfinkel, C. Green, P. McIntyre, C. Haber, Y. Iwata, Hiroto Kambara, G. Signorelli, Daniela Bortoletto, R. K. Plunkett, Maria Spiropulu, Kenneth Bloom, Matthew Herndon, A. Heiss, R. D. Field, A. Robinson, S. Rolli, Benjamin Kilminster, K. Takikawa, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, Barry Blumenfeld, S. Nahn, L. Pescara, E. Moore, A. Gordon, T. Nakaya, H. Akimoto, S. R. Hahn, L. Demortier, A. M. Lee, J. Antos, Konstanty Sumorok, Guenakh Mitselmakher, W. Hao, P. N. Singh, A. Brandl, L. Rosenson, John Huth, L. E. Kirsch, J. W. Chapman, R. Madrak, C. Nelson, Douglas Benjamin, R. Demina, Jay Dittmann, D. Cauz, Michele Gallinaro, A. G. Clark, C. R. Hall, Mark Kruse, Paul Tipton, B. Bevensee, S. Worm, D. Amidei, A. T. Goshaw, S. Errede, W. Ashmanskas, W. Erdmann, P. Sphicas, Virgil E Barnes, T. Kaneko, P. S. Chang, A. Menzione, M. Dell'Orso, R. Takashima, M. Lindgren, B. Tannenbaum, Thomas LeCompte, L. Holloway, J. Patrick, M. Mangano, A. M. Walsh, K. Kondo, A. Munar, G. Pauletta, I. Yu, Avraham Yagil, M. Kirk, E. McKigney, Leonard Spiegel, and Robert M Harris

Subjects
Physics, Meson, Astrophysics::High Energy Astrophysical Phenomena, Hadron, General Physics and Astronomy, Particle accelerator, Polarization (waves), law.invention, Nuclear physics, Angular distribution, law, High Energy Physics::Experiment, Nuclear Experiment, Collider Detector at Fermilab
Abstract

We have measured the polarization of J/psi and psi(2S) mesons produced in pp collisions at sqrt[s] = 1.8 TeV, using data collected at the Collider Detector at Fermilab during 1992-1995. The polarization of promptly produced J/psi [psi(2S)] mesons is isolated from those produced in B-hadron decay, and measured over the kinematic range 4 [5.5]

Published
2000
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49. Search for Second and Third Generation Leptoquarks Including Production via Technicolor Interactions inpp¯Collisions at√s=1.8TeV

Author

S. Wolinski, J. Mayer, J. D. Lewis, T. L. Watts, M. Kirk, M. Shimojima, T. Le Compte, P. Koehn, Y. Iwata, R. Kephart, G. Signorelli, Daniela Bortoletto, N. Moggi, Frank Hartmann, Kenichi Hatakeyama, Kostantinos Kordas, Alan Sill, R. E. Hughes, M. Franklin, Chunhui Chen, Petar Maksimovic, Jacobo Konigsberg, S. Bailey, M. Brozovic, A. Robinson, D. Winn, J. Valls, Minu Kim, D. Wolinski, M. T. Cheng, K. Takikawa, J. C. Freeman, K. Kelley, S. Leone, F. Strumia, Manfred Paulini, A. Scribano, Joel Goldstein, Y. C. Chen, M. Gold, Andrea Sansoni, B. Flaugher, Michael Schmitt, J. Incandela, H. S. Budd, R. J. Miller, S. Donati, P. Gatti, W. Ashmanskas, H. Nakada, Louis Lyons, S. Lusin, T. Ohsugi, F. Happacher, Andrew Beretvas, P. T. Chang, A. Mukherjee, Dario Bisello, D. Dagenhart, A. Bhatti, W. Carithers, S. Murgia, M. J. Shochet, E. Hafen, J. Conway, A. Köngeter, A. Connolly, T. Asakawa, A. Solodsky, R. Takashima, Andrea Bocci, Yongsun Kim, G. Pope, Matthew Jones, M. J. Wang, T. Miao, R. M. Haas, James D. Olsen, G. Velev, J. Spalding, Masaaki Tanaka, W. C. Wester, Tommaso Dorigo, J. Tseng, M. Binkley, P. K. Teng, Xin Wu, J. Berryhill, M. G. Albrow, E. Kovacs, H. Sato, T. Ohmoto, C. Green, R. Vilar, C. H. Wang, G. Punzi, M. Lindgren, B. Tannenbaum, L. Santi, E. Engels, M. Musy, J. Wahl, F. Palmonari, J. Wyss, N. S. Lockyer, Roberto Rossin, L. Malferrari, R. Thurman-Keup, F. Zetti, J. Strologas, K. Kondo, Umesh Joshi, P. De Barbaro, Cyp Ngan, G. Chiarelli, F. Ptohos, I.E. Chirikov-Zorin, Joe Kroll, M. Barone, J. Boudreau, T. Kuwabara, M. L. Chu, S. Nahn, J. Cooper, Robert M Harris, Mosè Mariotti, A. Munar, Maxwell Chertok, W. J. Robertson, S. H. Kim, G. Pauletta, A. J. Martin, L. Holloway, R. L. Wagner, S. Blusk, M. M. Deninno, P. Schlabach, E. Moore, M. Kelly, A. Korn, J. Cassada, L. Pondrom, E. Wicklund, Tong Gao, K. S. McFarland, S. Tether, K. Goulianos, S. Worm, Hajin Kim, M. Mishina, D. Amidei, Luca Scodellaro, K. L. Byrum, Y. Bonushkin, David Saltzberg, P. Giromini, Jochen Jens Heinrich, Anna Zanetti, H. Kasha, A. Gordon, Y. Gotra, Fumihiko Ukegawa, J. Patrick, Andrea Castro, P. Sphicas, K. Tollefson, D. Khazins, J. E. Elias, B. Hinrichsen, Virgil E Barnes, G. W. Foster, T. Watanabe, M. Tecchio, A. T. Goshaw, K. Karr, L. Demortier, S. Vejcik, C. Smith, A. B. Wicklund, T. Takano, C. Holck, T. Kaneko, Z. Yu, Jane Nachtman, E. James, W. Bokhari, I. Yu, Marjorie Shapiro, P. S. Chang, J. Lys, O. Pukhov, R. Roser, K. Ragan, A. Menzione, A. J. Slaughter, E. E. Schmidt, A. M. Lee, Th. Müller, S. R. Amendolia, Avraham Yagil, K. T. Pitts, S. Tkaczyk, E. Buckley-Geer, David Stuart, J.I. Friedman, Riccardo Paoletti, P. Sinervo, J. F. de Troconiz, R. G. Feild, P. Tamburello, W. K. Sakumoto, W-M. Yao, K. Sliwa, M. Campbell, D. Waters, W. Hao, P. Giannetti, Christoph Paus, J. Carlson, F. Azfar, Sally Seidel, G. P. Yeh, James Bensinger, K. D. Hoffman, Tony Liss, H. Toyoda, S. C. van den Brink, E. McKigney, R. Handler, N. Lai, Kazuhiko Hara, Beom Jun Kim, Paolo Calafiura, Teresa Rodrigo, Hiroshi Ikeda, S. Geer, Shin-Shan Yu, C. Haber, K. Lee, T. J. Phillips, A. Brandl, R. C. Webb, Y. Morita, W. Riegler, R. Oishi, John Huth, Fedor Prokoshin, R. Cropp, Yasuo Fukui, A. Ribon, C. Grosso-Pilcher, S. Dell'Agnello, M. W. Bailey, F. Spinella, T. Okusawa, Leonard Spiegel, Igor Volobouev, J. W. Chapman, M. Cordelli, P. Mazzanti, S. Lami, T. Shah, R. Vidal, T. Handa, H. H. Williams, M. Mangano, G. Busetto, Brian L Winer, J. Done, J. Huston, R. G. Wagner, R. S. Guo, G. Introzzi, P. F. Derwent, K. Anikeev, Pierre Savard, H. Niu, N. Bruner, A. M. Walsh, S. Errede, F. de Jongh, A. Stefanini, D. Errede, S. P. Pappas, M. Lancaster, J. P. Berge, Y. Kato, D. Neuberger, G. Guillian, J. Guimaraes Da Costa, M. Atac, J. B. Liu, Catherine Newman-Holmes, R. Culbertson, N. B. Wallace, T. Speer, Wendy Taylor, J. A.J. Matthews, P. Amaral, P. F. Shepard, S. H. Oh, L. Christofek, D. Reher, T. Suzuki, J. Budagov, H. Wenzel, Stephan Lammel, Allan G Clark, Roger Moore, S. Zucchelli, R. E. Blair, M. H. Kirby, F. Rimondi, Christina Mesropian, A. Pompos, T. Kikuchi, A. Bodek, J. Iwai, C. Yosef, P. Yeh, Lawrence Nodulman, Alessandro Cerri, P. Lukens, T. Shibayama, Itsuo Nakano, M. Loreti, V. Papadimitriou, Daijin Kim, W. Erdmann, L. Groer, Alan Garfinkel, P. McIntyre, A. Heiss, K. Terashi, Nicola Turini, A. T. Laasanen, Jay Hauser, L. Pescara, Hiroto Kambara, G. Latino, H. Minato, Kenneth Bloom, D. Theriot, Jay Dittmann, D. Cauz, S.G. Klimenko, J. N. Bellinger, Daniel P Cronin-Hennessy, R. D. Field, J. S. Miller, Kevin Burkett, Michele Gallinaro, Aw Chan, Duncan Carlsmith, C. R. Hall, Mark Kruse, Paul Tipton, B. Bevensee, Q. Fan, A. Tollestrup, T. Devlin, C. Pagliarone, S. Galeotti, J. Wolinski, A. Nomerotski, Kevin Einsweiler, J. G. Loken, C. Ferretti, Gino Bolla, D. Lucchesi, M. Dell'Orso, G. Piacentino, Guenakh Mitselmakher, P. N. Singh, S. Miscetti, L. Rosenson, G. Bellettini, G. Martignon, L. E. Kirsch, A. Semenov, R. Madrak, C. Nelson, Douglas Benjamin, R. Demina, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, J. I. Lamoureux, R. D. Kennedy, J. Siegrist, Y. Seiya, Stefano Belforte, M. Popovic, Henrik Jeldtoft Jensen, L. Ristori, W. Trischuk, P. Murat, Nicola Bacchetta, F. Bedeschi, M. P. Schmidt, G. Bauer, W. Orejudos, Frank Chlebana, A. D. Hardman, F. D. Snider, A. Rakitine, A. Akopian, Maurice Garcia-Sciveres, J. Cranshaw, A. Reichold, P. Azzi-Bacchetta, S. Wolbers, C. Bromberg, T. Yoshida, T. Affolder, D. W. Gerdes, A. Barbaro-Galtieri, M. Guenther, D. Vucinic, F. Semeria, T. A. Keaffaber, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, T. Nakaya, H. Akimoto, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, S. R. Hahn, Craig Blocker, Kaori Maeshima, J. Antos, Konstanty Sumorok, T. Vaiciulis, S. Segler, P. Wilson, R. K. Plunkett, Maria Spiropulu, M. Menguzzato, Matthew Herndon, S. Rolli, Benjamin Kilminster, S. E. Kuhlmann, P. Nicolaidi, G. Chlachidze, Barry Blumenfeld, J. Yoh, C. I. Ciobanu, Yc Liu, J. Steele, Andrey Korytov, and V. Glagolev

Subjects
Physics, Quark, Particle physics, Missing energy, High Energy Physics::Phenomenology, General Physics and Astronomy, Technicolor, Standard Model, Nuclear physics, Color model, High Energy Physics::Experiment, Leptoquark, Neutrino, Collider Detector at Fermilab
Abstract

We report the results of a search for second and third generation leptoquarks using 88 pb{sup -1} of data recorded by the Collider Detector at Fermilab. Color triplet technipions, which play the role of scalar leptoquarks, are investigated due to their potential production in decays of strongly coupled color octet technirhos. Events with a signature of two heavy flavor jets and missing energy may indicate the decay of a second (third) generation leptoquark to a charm (bottom) quark and a neutrino. As the data are found to be consistent with standard model expectations, mass limits are determined.

Published
2000
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50. Search for New Particles Decaying tott¯inpp¯Collisions at√s=1.8TeV

Author

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, S. R. Amendolia, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, M. Atac, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, M. W. Bailey, S. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, B. Bevensee, A. Bhatti, M. Binkley, D. Bisello, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandl, S. van den Brink, C. Bromberg, M. Brozovic, N. Bruner, E. Buckley-Geer, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, J. Cassada, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M.-T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, S. Cihangir, C. I. Ciobanu, A. G. Clark, A. Connolly, J. Conway, J. Cooper, M. Cordelli, J. Cranshaw, D. Cronin-Hennessy, R. Cropp, R. Culbertson, D. Dagenhart, F. DeJongh, S. Dell'Agnello, M. Dell'Orso, R. Demina, L. Demortier, M. Dennino, P. F. Derwent, T. Devlin, J. R. Ditmann, S. Donati, J. Done, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, E. Engels, W. Erdmann, D. Errede, S. Errede, Q. Fan, R. G. Feild, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, Y. Fukui, S. Galeotti, M. Gallinaro, T. Gao, M. Garcia-Sciveres, A. F. Garfinkel, P. Gatti, C. Gay, S. Geer, D. W. Gerdes, P. Giannetti, P. Giromini, V. Glagolev, M. Gold, J. Goldstein, A. Gordon, A. T. Goshaw, Y. Gotra, K. Goulianos, C. Green, L. Groer, C. Grosso-Pilcher, M. Guenther, G. Guillian, J. Guimaraes da Costa, R. S. Guo, C. Haber, E. Hafen, S. R. Hahn, C. Hall, T. Handa, R. Handler, W. Hao, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, A. Heiss, M. Herndon, B. Hinrichsen, K. D. Hoffman, C. Holck, R. Hollebeek, L. Holloway, R. Hughes, J. Huston, J. Huth, H. Ikeda, J. Incandela, G. Introzzi, J. Iwai, Y. Iwata, E. James, H. Jensen, M. Jones, U. Joshi, H. Kambara, T. Kamon, T. Kaneko, K. Karr, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, M. Kelly, R. D. Kennedy, R. Kephart, D. Khazins, T. Kikuchi, M. Kirk, B. J. Kim, D. H. Kim, H. S. Kim, M. J. Kim, S. H. Kim, Y. K. Kim, L. Kirsch, S. Klimenko, P. Koehn, A. Köngeter, K. Kondo, J. Konigsberg, K. Kordas, A. Korn, A. Korytov, E. Kovacs, J. Kroll, M. Kruse, S. E. Kuhlmann, K. Kurino, T. Kuwabara, A. T. Laasanen, N. Lai, S. Lami, S. Lammel, J. I. Lamoureux, M. Lancaster, G. Latino, T. LeCompte, A. M. Lee, K. Lee, S. Leone, J. D. Lewis, M. Lindgren, T. M. Liss, J. B. Liu, Y. C. Liu, N. Lockyer, J. Loken, M. Loreti, D. Lucchesi, P. Lukens, S. Lusin, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, M. Mariotti, G. Martignon, A. Martin, J. A. J. Matthews, J. Mayer, P. Mazzanti, K. S. McFarland, P. McIntyre, E. McKigney, M. Menguzzato, A. Menzione, C. Mesropian, T. Miao, R. Miller, J. S. Miller, H. Minato, S. Miscetti, M. Mishina, G. Mitselmakher, N. Moggi, E. Moore, R. Moore, Y. Morita, A. Mukherjee, T. Muller, A. Munar, P. Murat, S. Murgia, M. Musy, J. Nachtman, S. Nahn, H. Nakada, T. Nakaya, I. Nakano, C. Nelson, D. Neuberger, C. Newman-Holmes, C.-Y. P. Ngan, P. Nicolaidi, H. Niu, L. Nodulman, A. Nomerotski, S. H. Oh, T. Ohmoto, T. Ohsugi, R. Oishi, T. Okusawa, J. Olsen, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, S. P. Pappas, D. Partos, J. Patrick, G. Pauletta, M. Paulini, C. Paus, L. Pescara, T. J. Phillips, G. Piacentino, K. T. Pitts, R. Plunkett, A. Pompos, L. Pondrom, G. Pope, M. Popovic, F. Prokoshin, J. Proudfoot, F. Ptohos, G. Punzi, K. Ragan, A. Rakitine, D. Reher, A. Reichold, W. Riegler, A. Ribon, F. Rimondi, L. Ristori, W. J. Robertson, A. Robinson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, W. K. Sakumoto, D. Saltzberg, A. Sansoni, L. Santi, H. Sato, P. Savard, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scott, A. Scribano, S. Segler, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, T. Shah, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, J. Siegrist, G. Signorelli, A. Sill, P. Sinervo, P. Singh, A. J. Slaughter, K. Sliwa, C. Smith, F. D. Snider, A. Solodsky, J. Spalding, T. Speer, P. Sphicas, F. Spinella, M. Spiropulu, L. Spiegel, J. Steele, A. Stefanini, J. Strologas, F. Strumia, D. Stuart, K. Sumorok, T. Suzuki, T. Takano, R. Takashima, K. Takikawa, P. Tamburello, M. Tanaka, B. Tannenbaum, W. Taylor, M. Tecchio, P. K. Teng, K. Terashi, S. Tether, D. Theriot, R. Thurman-Keup, P. Tipton, S. Tkaczyk, K. Tollefson, A. Tollestrup, H. Toyoda, W. Trischuk, J. F. de Troconiz, J. Tseng, N. Turini, F. Ukegawa, T. Vaiciulis, J. Valls, S. Vejcik, G. Velev, R. Vidal, R. Vilar, I. Volobouev, D. Vucinic, R. G. Wagner, R. L. Wagner, J. Wahl, N. B. Wallace, A. M. Walsh, C. Wang, C. H. Wang, M. J. Wang, T. Watanabe, D. Waters, T. Watts, R. Webb, H. Wenzel, W. C. Wester, A. B. Wicklund, E. Wicklund, H. H. Williams, P. Wilson, B. L. Winer, D. Winn, S. Wolbers, D. Wolinski, J. Wolinski, S. Wolinski, S. Worm, X. Wu, J. Wyss, A. Yagil, W. Yao, G. P. Yeh, P. Yeh, J. Yoh, C. Yosef, T. Yoshida, I. Yu, S. Yu, A. Zanetti, F. Zetti, and S. Zucchelli

Subjects
Physics, Quark, Particle physics, 010308 nuclear & particles physics, Topcolor, General Physics and Astronomy, Technicolor, Particle accelerator, 01 natural sciences, law.invention, law, 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, 010306 general physics, Collider Detector at Fermilab, Boson
Abstract

We use 106 pb{sup -1} of data collected with the Collider Detector at Fermilab to search for narrow-width, vector particles decaying to a top and an antitop quark. Model independent upper limits on the cross section for narrow, vector resonances decaying to t{ovr t} are presented. At the 95% confidence level, we exclude the existence of a leptophobic Z' boson in a model of top-color-assisted technicolor with mass M{sub Z'}

Published
2000
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