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439 results on '"J. RODIN"'

1. Implementing multiphysics models in FEniCS: Viscoelastic flows, poroelasticity, and tumor growth

Author

Birkan Tunç, Gregory J. Rodin, and Thomas E. Yankeelov

Subjects
FEniCs, Multiphysics problems, Viscoelastic flows, Poroelasticity, Tumor growth, Medical technology, R855-855.5
Abstract

The open-source finite element code FEniCS is considered as an alternative to commercial finite element codes for evaluating complex constitutive models of multiphysics phenomena. FEniCS deserves this consideration because it is well-suited for encoding weak forms corresponding to partial differential equations arising from the fundamental balance laws and constitutive equations. It is shown how FEniCS can be adopted for solving boundary-value problems describing viscoelastic flows, poroelasticity, and tumor growth. Those problems span a wide range of models of continuum mechanics, and involve Eulerian, Lagrangian, and combined Eulerian-Lagrangian descriptions. Thus it is demonstrated that FEniCS is a viable computational tool capable of transcending traditional barriers between computational fluid and solid mechanics. Furthermore, it is shown that FEniCS implementations are straightforward, and do not require advanced knowledge of finite element methods and/or coding skills.

Published
2023
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2. Mechanics of Crater-Enabled Soft Dry Adhesives: A Review

Author

Liu Wang, Kyoung-Ho Ha, Gregory J. Rodin, Kenneth M. Liechti, and Nanshu Lu

Subjects
dry adhesive, suction, crater, micro-pillar, adhesive strength, underwater adhesion, Mechanical engineering and machinery, TJ1-1570
Abstract

Dry adhesion is governed by physical rather than chemical interactions. Those may include van der Waals and electrostatic forces, friction, and suction. Soft dry adhesives, which can be repeatedly attached to and detached from surfaces, can be useful for many exciting applications including reversible tapes, robotic footpads and grippers, and bio-integrated electronics. So far, the most studied Soft dry adhesives are gecko-inspired micro-pillar arrays, but they suffer from limited reusability and weak adhesion underwater. Recently cratered surfaces emerged as an alternative to micro-pillar arrays, as they exhibit many advantageous properties, such as tunable pressure-sensitive adhesion, high underwater adhesive strength, and good reusability. This review summarizes recent work of the authors on mechanical characterization of cratered surfaces, which combines experimental, modeling, and computational components. Using fundamental relationships describing air or liquid inside the crater, we examine the effects of material properties, crater shapes, air vs. liquid ambient environments, and surface patterns. We also identify some unresolved issues and limitations of the current approach, and provide an outlook for future research directions.

Published
2020
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5. Axisymmetric deformation of compressible, nearly incompressible, and incompressible thin layers between two rigid surfaces

Author

Kirill R. Rebrov, Gregory J. Rodin, and Alexander Movchan

Subjects
Physics, Thin layers, Applied Mathematics, Mechanical Engineering, Rotational symmetry, 02 engineering and technology, Mechanics, Deformation (meteorology), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Physics::Fluid Dynamics, Mathematics - Analysis of PDEs, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Modeling and Simulation, FOS: Mathematics, Compressibility, General Materials Science, SPHERES, 0210 nano-technology, Analysis of PDEs (math.AP)
Abstract

Accurate asymptotic solutions are presented for axisymmetric deformation of thin layers constrained by either two rigid plates or two rigid spheres. Those solutions are developed using Saint-Venant's principle and the layer thinness as the only assumptions. The solutions are valid in the entire range of Poisson's ratios, and allow one to distinguish among compressible, nearly incompressible, and incompressible layers. That classification involves both material and geometric parameters., 38 pages, 4 figures

Published
2021
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6. Local and non-local modeling aspects of three-dimensional cracks growth initiation

Author

Gregory J. Rodin

Subjects
Mesoscopic physics, Normal plane, Computational Mechanics, Front (oceanography), 02 engineering and technology, Mechanics, Non local, 01 natural sciences, Physics::Geophysics, 010101 applied mathematics, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, Simple (abstract algebra), Modeling and Simulation, Fracture (geology), Point (geometry), 0101 mathematics, Geology
Abstract

Three-dimensional crack growth initiation is examined under the assumption that the crack front remains smooth. Two important modeling issues, specific to three-dimensional rather than two-dimensional cracks, are addressed. First, it is established that, at each point along the crack front, the velocity and configurational force are two-dimensional vectors, lying in the local normal plane. This allows one to generalize any two-dimensional crack growth criterion to three dimensions. Second, a simple mesoscopic model to account for along-the-front non-locality is proposed. This model eliminates pathological growth patterns ubiquitous to basic models applied to three-dimensional cracks. Further, the model is straightforward to use as it relies on standard fracture properties only.

Published
2020
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10. Layered Elastomeric Fibrous Scaffolds: An In-Silico Study of the Achievable Range of Mechanical Behaviors

Author

James B. Carleton, Gregory J. Rodin, and Michael S. Sacks

Subjects
0301 basic medicine, Scaffold, Materials science, 0206 medical engineering, Biomedical Engineering, Micromechanics, Biomaterial, Nanotechnology, 02 engineering and technology, Elastomer, 020601 biomedical engineering, Tortuosity, Biomaterials, 03 medical and health sciences, Range (mathematics), 030104 developmental biology, Fiber, Composite material, Material properties
Abstract

Our goal herein is to understand the mechanisms underlying soft tissue and scaffold behaviors by developing a physically based micromechanical model as a means to connect the macroscopic behaviors to the underlying microstructural phenomena. Because of its well-documented capacity for generating elastomeric fibrous materials with a wide range of realizable architectures, the electrospun scaffold was used as the exemplar biomaterial. Fibrous network geometries based on a random walk algorithm were first generated to form the basis for subsequent micromechanical simulations. A basic understanding of randomly oriented fibrous network phenomena was then developed, and subsequently expanded on using networks with aligned fibers. Simulation results were then compared with experimental observations of electrospun scaffolds to evaluate the validity of the simulations. The effects of fiber alignment, tortuosity, and material properties on macroscopic mechanical behavior of the material have been presented both individually and in combination. We have seen that all three aspects of the scaffold network can have significant effects on the macroscopic behavior for different load cases. Overall, accurate representation of detailed fibrous network geometry permitted a greater understanding of the complex mechanisms underlying the macroscopic behavior unique to these biomaterials. Insights gained from such simulations can significantly aid the process of designing scaffold network geometries that result in engineered tissues that function as well as or better than the native tissues they are intended to replace.

Published
2021

15. The determination of the axial Young's modulus of honeycomb specimens under bending

Author

Andrew Drach, Desiderio Kovar, Gregory J. Rodin, and James K. Mikulak

Subjects
Timoshenko beam theory, Materials science, Tension (physics), Modulus, Young's modulus, Bending, symbols.namesake, Buckling, Materials Chemistry, Ceramics and Composites, symbols, Honeycomb, Composite material, Elastic modulus
Abstract

For solid specimens, Young's modulus is commonly determined from straightforward uniaxial tension experiments. However, honeycomb specimens are far more challenging to test in tension, and it is therefore desirable to conduct bending experiments to determine Young's modulus. The premise of this work is that the bending response of honeycomb specimens may be significantly different from that of solid specimens, and therefore it is necessary to establish a sound protocol for the determination of the axial Young's modulus of honeycomb specimens under bending. Toward this goal, we present results of a study that combines experimental, finite element simulation, and classical beam theory approaches. These results confirm that accurate measurements of Young's modulus of honeycombs require careful consideration of the specimen geometry and analysis of the data. We demonstrate that the use of conventional Bernoulli-Euler's beam theory to interpret the data requires very slender specimens. We also show that less slender specimens can be used if the experimental data is interpreted on the basis of three-dimensional elasticity theory and numerical simulations. A third option is to use a combination of moderately slender specimens and Timoshenko's beam theory.

Published
2017
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16. Isogeometric analysis of boundary integral equations: High-order collocation methods for the singular and hyper-singular equations

Author

Gregory J. Rodin, Matthias Taus, and Thomas J. R. Hughes

Subjects
Independent equation, Applied Mathematics, Mathematical analysis, MathematicsofComputing_NUMERICALANALYSIS, 010103 numerical & computational mathematics, Isogeometric analysis, Singular integral, Singular boundary method, 01 natural sciences, Integral equation, Fourier integral operator, 010101 applied mathematics, Modeling and Simulation, Collocation method, ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION, 0101 mathematics, Boundary element method, Mathematics
Abstract

Isogeometric analysis is applied to boundary integral equations corresponding to boundary-value problems governed by Laplace’s equation. It is shown that the smoothness of geometric parametrizations central to computer-aided design can be exploited for regularizing integral operators to obtain high-order collocation methods involving superior approximation and numerical integration schemes. The regularization is applicable to both singular and hyper-singular integral equations, and as a result one can formulate the governing integral equations so that the corresponding linear algebraic equations are well-conditioned. It is demonstrated that the proposed approach allows one to compute accurate approximate solutions which optimally converge to the exact ones.

Published
2016
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17. Geometric characterization and simulation of planar layered elastomeric fibrous biomaterials

Author

Kristen R. Feaver, Antonio D'Amore, Gregory J. Rodin, James B. Carleton, Michael S. Sacks, Carleton,J, D’Amore,A, Feaver,K, Rodin,G, and Sacks M.

Subjects
Materials science, Matching (graph theory), Geometric probability, Biomedical Engineering, Biocompatible Materials, scaffold, Biochemistry, Article, Modeling and simulation, fibrous biomaterial, Biomaterials, Intersection, Molecular Biology, Orientation (computer vision), Fiber (mathematics), business.industry, tissue engineering, General Medicine, Structural engineering, Random walk, Characterization (materials science), Elastomers, Geometric characterization, Microscopy, Electron, Scanning, business, Algorithm, Algorithms, Biotechnology
Abstract

An important class of biomaterials is composed of layered networks of elastomeric fibers. While there is a growing interest in modeling and simulation of the mechanical response of these biomaterials, a theoretical foundation for such simulations has yet to be firmly established. The present work addresses this issue in two ways. First, using methods of geometric probability we develop theoretical estimates for the linear and areal fiber intersection densities for two-dimensional fibrous networks. These are expressed in terms of the fiber density and orientation distribution function, both of which are relatively easy to measure properties. Secondly, we develop a random walk algorithm for geometric simulation of two-dimensional fibrous networks which can accurately reproduce prescribed fiber density and orientation distribution function. Furthermore, the linear and areal fiber intersection densities obtained with the algorithm are in agreement with the theoretical estimates. Both theoretical and computational results are compared with those obtained by post-processing of SEM images of actual scaffolds. These comparisons reveal difficulties inherent to resolving fine details of multilayered fibrous networks. We also note that one should think not in terms of sufficiently large specimens for analysis, but rather sufficiently fiber-filled specimens. Correctly identifying and matching key geometric features is a critically important first step for performing reliable mechanical simulations. The methods provided herein can provide a rational means to define and generate key geometric features from scaffold structural data.

Published
2015
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18. On reflected interactions in elastic solids containing inhomogeneities

Author

Gregory J. Rodin and George J. Weng

Subjects
Physics, Mechanical Engineering, Linear elasticity, Mathematical analysis, Boundary (topology), Condensed Matter Physics, Ellipsoid, Integral equation, Elastic solids, Classical mechanics, Mechanics of Materials, Thermodynamic limit, Tensor, Effective stiffness
Abstract

Interactions in linear elastic solids containing inhomogeneities are examined using integral equations. Direct and reflected interactions are identified. Direct interactions occur simply because elastic fields emitted by inhomogeneities affect each other. Reflected interactions occur because elastic fields emitted by inhomogeneities are reflected by the specimen boundary back to the individual inhomogeneities. It is shown that the reflected interactions are of critical importance to analysis of representative volume elements. Further, the reflected interactions are expressed in simple terms, so that one can obtain explicit approximate expressions for the effective stiffness tensor for linear elastic solids containing ellipsoidal and non-ellipsoidal inhomogeneities. For ellipsoidal inhomogeneities, the new approximation is closely related to that of Mori and Tanaka. In general, the new approximation can be used to recover Ponte Castaneda–Willis׳ and Kanaun–Levin׳s approximations. Connections with Maxwell׳s approximation are established.

Published
2014
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19. Isogeometric boundary element methods and patch tests for linear elastic problems: Formulation, numerical integration, and applications

Author

Michael A. Scott, Gregory J. Rodin, Thomas J. R. Hughes, and Matthias Taus

Subjects
Collocation, Laplace transform, Computer science, Mechanical Engineering, Linear elasticity, Computational Mechanics, General Physics and Astronomy, Basis function, Finite element method, Computer Science Applications, Numerical integration, Mechanics of Materials, Applied mathematics, Boundary element method, Condition number
Abstract

An Isogeometric Boundary Element Method for solving three-dimensional boundary-value problems of classical linear elasticity theory is proposed. The method is developed as a generalization of the author’s earlier work on Laplace’s equation to Navier’s equations. As a result the proposed method features ( i ) proper basis functions for approximating Dirichlet and Neumann data, ( i i ) high-order collocation schemes for weakly singular, singular, and hyper-singular integral operators, ( i i i ) state-of-the-art numerical integration schemes capable of handling geometries with disparate dimensions, ( i v ) well-conditioned linear algebraic systems, with the condition number independent of the mesh size. Boundary Element Patch Tests, as extensions of concepts widely used for finite element methods, are also introduced. It is shown how these tests can be used to assess the veracity of boundary element formulations and numerical integration schemes, implementations, and geometric precision of Computer Aided Design models. The method is applied to two challenging case studies, representative of industrial applications.

Published
2019
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20. Search for a Higgs boson decaying into two photons in e(+)e(-) interactions at root s=189 GeV

Author

M. Vivargent, D. Piccolo, Vladimir Andreev, R. Ramelli, C. C. Samuel Ting, D.W. Schmitz, P. de Jong, N. Shivarov, R. van Gulik, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, S. S. Gau, K. L. Tung, Peter Denes, Robert Clare, Lamberto Luminari, Paolo Bagnaia, W. G. Ma, Thomas Hebbeker, G. Ambrosi, M. Rescigno, A. Barczyk, M. Gataullin, T. Sztaricskai, Paul Lecoq, R. W. Kraemer, M. Napolitano, A. Oulianov, C. Palomares, P. Wienemann, Adrian Biland, Egidio Longo, V. Plyaskin, Pierre Lecomte, F. Pierella, Federico Cindolo, A. Stone, Georgi Sultanov, T. S. Dai, R. A. Khan, S. Pensotti, Valery Schegelsky, Antonino Zichichi, C. Dionisi, Nicola Cavallo, H. K. Park, D. Duchesneau, H. S. Chen, L. Servoli, R. Leiste, Christoph Paus, Dimitri Bourilkov, P. Spillantini, Pablo Garcia-Abia, Werner Lustermann, Charles Timmermans, M. Dierckxsens, S. C. Tonwar, H. Rykaczewski, Frank Filthaut, Giovanni Organtini, Alain Hervé, T. Paul, H. Wilkens, G. Castellini, M. Chemarin, A. Bay, Ren-Yuan Zhu, B. Petersen, Thomas Ferguson, A. Malinin, A. Bajo, Alexei Raspereza, M. T. Dova, G. S. Muanza, I. Vodopianov, E. Fiandrini, Igor Vorobiev, J. A. van Dalen, A. Engler, G. M. Chen, G. Forconi, M. Pohl, S. Vlachos, Z. F. Gong, Gyorgy Vesztergombi, Peter Raics, M. Capell, H. S. Fesefeldt, E. Pistolesi, Luca Malgeri, Carlo Civinini, G. Raven, L. Xia, Aaron Dominguez, Jean Fay, M. Aguilar-Benitez, O. Grimm, Felicitas Pauss, Herwig Schopper, M. Pedace, S. C. Blyth, Marco Meschini, J. Rodin, T. Niessen, S. Rosier-Lees, P. Le Coultre, M. Basile, An. Zalite, A. De Salvo, P. Bartalini, A. Krüger, J. G. Branson, Kajari Mazumdar, X. D. Cai, Alessandra Doria, A. Gurtu, S. Villa, P. Duinker, P. Levtchenko, Panos A Razis, Christopher George Tully, S. N. Ganguli, A. Degré, H. Postema, W. J. Burger, Michael Dittmar, M. N. Kienzle-Focacci, A. Seganti, Harvey B Newman, M. Musy, R. Barillère, Jozsef Toth, Claudio Luci, D. Pandoulas, F. C. Erné, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, A. Lebedev, D. Mangeol, D. Luckey, B. Musicar, Roberto Battiston, Gerjan Bobbink, B. Borgia, G. Schwering, A. Csilling, J. Ulbricht, Dong-Chul Son, C. Furetta, M. Lebeau, J.P. Martin, Simonetta Gentile, S. R. Hou, M. Wadhwa, A. Balandras, D. J. Schotanus, K. Freudenreich, B. Tellili, J. Berdugo, J. J. Blaising, Marco Pieri, J. Hirschfelder, Stefano Giagu, J. D. Swain, A. Hasan, Raffaello D'Alessandro, F. Cesaroni, A. Buijs, Leonardo Merola, E. J. Sanchez, Maurizio Biasini, Pierluigi Paolucci, Marta Felcini, Peter H. Fisher, A. Klimentov, L. Lugnier, W. Kittel, I. Clare, G. Cara Romeo, B. P. Roe, S. Reucroft, S. V. Baldew, D. O. Prokofiev, Francesco Becattini, L. Tauscher, X. L. Wang, S. Cucciarelli, M. Pauluzzi, G. Marian, Aleandro Nisati, F. Brochu, C. Maña, D. della Volpe, H. J. Lee, Marcella Diemoz, G. Landi, M. Fabre, Jasper Kirkby, M. A. Falagan, I. Vetlitsky, Giovanni Passaleva, Joseph Quartieri, E. Delmeire, U. K. Chaturvedi, T. Azemoon, M. Zöller, Mingming Yang, H. F. Chen, An.A. Vorobyov, A. Böhm, Simone Paoletti, Y. S. Lu, Riccardo Paramatti, A. Favara, D. Ren, Anna Katharina Kopp, Zheng Wang, H. J. Yang, R. Ofierzynski, P. G. Rancoita, Pàl Hidas, Zhenyu Zhang, A. J.M. Muijs, S. Bhattacharya, L. Baksay, F. Cotorobai, B. De La Cruz, A. Shvorob, R. Ranieri, S. Likhoded, A. Kunin, Marcos Cerrada, B. N. Jin, Manjit Kaur, G. Ruggiero, A. C. Weber, L. Z. Sun, O. Adriani, Z. Szillasi, Hafeez R Hoorani, S. Wynhoff, C-Q. Li, A. Rosca, V. K. Gupta, H. Nowak, G. Chiefari, D. Vicinanza, S. Shevchenko, J. H. Field, Imad Baptiste Laktineh, V. Koutsenko, Lucas Taylor, Francesca Cavallari, M. G. Alviggi, E. Valente, M. E. Sarakinos, F. Behner, Yu. Galaktionov, L. Bellucci, Z. A. Liu, A. Vorvolakos, F. DeNotaristefani, W. J. Metzger, B. Stoyanov, S. Schmidt-Kaerst, T. Angelescu, G. Mirabelli, W. Wallraff, J. Alcaraz, G. Y. Zhu, E. Shumilov, P. Déglon, P. Ladron de Guevara, G. Viertel, S. Banerjee, K. Lübelsmeyer, S. Saremi, J. Casaus, V. Shoutko, K. Sudhakar, Ya Han Hu, D. Haas, Manas Maity, Jeremy Mans, Tariq Aziz, Claudia Cecchi, M. von der Mey, P. Berges, Hans J. Vogel, A. Buffini, A. Mihul, J. B. Ye, G. Alemanni, J. K. Kim, F. L. Linde, C. G. Yang, J. Pothier, Yu. Zalite, M. Acciarri, Guo-Ming Chen, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, W. T. Lin, S. Costantini, S. C. Yeh, J. A. Rubio, A. Chen, D. van Dierendonck, J. Salicio, Crisostomo Sciacca, B. Zimmermann, D. Kiss, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, Ph. Lebrun, X. W. Tang, P. A. Piroué, M. W. Gruenewald, M. Chamizo, I. Josa-Mutuberria, M. Kräber, Dong-Hyun Kim, G. Zilizi, R. Berbeco, A. Arefiev, R. R. McNeil, G. Carlino, G. Holzner, K. Riles, F. Marzano, G. Coignet, W. Krenz, S. X. Wu, Inkyu Park, M. Steuer, M. A. Rahaman, D. Perret-Gallix, D. Prokofiev, Luisa Cifarelli, L. J. Gutay, U. Becker, I. Duran, F. J. Eppling, L. W. Jones, S. M. Ting, J.V. Allaby, S. Patricelli, D. Hatzifotiadou, Laszlo Boldizsar, L. Romero, S. Sarkar, M. Bourquin, G. J. Grenier, Joachim Mnich, P. Achard, H. Milcent, T. Moulik, A. M. Cartacci, A. C. König, D. P. Stickland, Y. H. Chang, Francesca Nessi-Tedaldi, J. D. Burger, T. Siedenburg, G. Rahal-Callot, N. Raja, D. Dufournaud, H. Suter, Ia Iashvili, Z. Z. Xu, C. H. Lin, V. Pojidaev, Y. Uchida, Minhong Wang, M. P. Sanders, B. L. Betev, Speranza Falciano, A. Straessner, Luca Lista, Sabine Riemann, H. Anderhub, Michele Guida, B. Smith, S. Braccini, R. de Asmundis, I. Fisk, H. El Mamouni, Oleg Fedin, Max Weber, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Hu, Y., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zimmermann, B., and Zoller, M.

Subjects
COLLISIONS, Z boson, Nuclear and High Energy Physics, Particle physics, Photon, Higgs boson, L3 data collected at LEP, Electron–positron annihilation, STANDARD MODEL, 2 PHOTONS, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Lower limit, High Energy Physics - Experiment, Standard Model, W-PAIR PRODUCTION, Nuclear physics, BHABHA SCATTERING, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, MONTE-CARLO PROGRAM, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], PARTICLES, TEVATRON, 010306 general physics, DETECTOR, Ciencias Exactas, L3 EXPERIMENT, Physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Física, Function (mathematics), Scalar boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

A search is performed for a Higgs boson produced in association with a Z boson and decaying into two photons, using the L3 data collected at LEP at a centre-of-mass energy of 189 GeV. All decay modes of the Z are considered. No signal is observed and limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are derived assuming a Standard Model production rate. A lower limit on the mass of a fermiophobic Higgs is set at 94.9 GeV at 95% confidence level., Facultad de Ciencias Exactas

Published
2016
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21. Search for the Standard Model Higgs boson in e(+)e(-) collisions at root s up to 202 GeV

Author

G. Forconi, M. Pohl, Yu. Galaktionov, R. Barillère, Jozsef Toth, Claudio Luci, Peter H. Fisher, A. Hervé, D. Pandoulas, J. Alcaraz, M. W. Gruenewald, I. Josa-Mutuberria, A. Bajo, P. G. Rancoita, B. N. Jin, H. Nowak, D. Vicinanza, Riccardo Paramatti, W. Wallraff, S. Banerjee, A. Kunin, M. Kräber, G. Grenier, Egidio Longo, G. Ruggiero, R. Berbeco, W. Kittel, T. Angelescu, Speranza Falciano, J. G. Branson, A. C. Weber, A. Straessner, Dimitri Bourilkov, S. Reucroft, D. Käfer, S. Villa, S. V. Baldew, D. O. Prokofiev, Luca Lista, Hafeez R Hoorani, J. Casaus, S. Sushkov, G. Schwering, Aleandro Nisati, P. Spillantini, S. N. Ganguli, A. Arefiev, J.V. Allaby, S. Patricelli, Francesca Cavallari, A. Mihul, G. Alemanni, Joseph Quartieri, R. R. McNeil, G. Carlino, M. Rescigno, L. Romero, A. Degré, A. Ewers, W. J. Metzger, Sabine Riemann, A. Lebedev, Dong-Chul Son, D. Hatzifotiadou, Laszlo Boldizsar, S. Sarkar, R. Leiste, S. C. Yeh, Christoph Paus, Jasper Kirkby, M. A. Falagan, C. Furetta, J. J. Blaising, B. Petersen, M. Zöller, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, M. Bourquin, F. Cesaroni, C. G. Yang, J. Pothier, Yu. Zalite, M. Fabre, K. Sudhakar, J. Hirschfelder, G. Holzner, Stefano Giagu, K. Riles, Anna Katharina Kopp, L. Lugnier, Mingming Yang, M. von der Mey, P. Achard, Y. Uchida, J. P. Martin, D. Haas, J. B. Ye, F. Cindolo, C. Rosenbleck, F. Marzano, G. Coignet, W. Krenz, Maria-Teresa Dova, Raffaello D'Alessandro, Minhong Wang, M. P. Sanders, T. Sztaricskai, B. L. Betev, G. Y. Zhu, E. Shumilov, G. Ambrosi, F. L. Linde, G. Mirabelli, J. K. Kim, I. Vetlitsky, Francesca Nessi-Tedaldi, G. Cara Romeo, B. P. Roe, Marco Pieri, B. Roux, A. Barczyk, V. Plyaskin, Leonardo Merola, V. Shoutko, J. D. Burger, T. Siedenburg, G. Rahal-Callot, A. De Salvo, P. Wienemann, J. Mnich, Georgi Sultanov, S. X. Wu, T. S. Dai, R. A. Khan, P. Bartalini, M. N. Kienzle-Focacci, Pierluigi Paolucci, N. Raja, Adrian Biland, Claudia Cecchi, A. Csilling, Alexei Raspereza, L. Tauscher, A. M. Cartacci, A. C. König, M. Kopal, Inkyu Park, An. Zalite, K. Lübelsmeyer, M. Steuer, H. Suter, Ia Iashvili, G. Marian, V. P. Andreev, R. Ramelli, C-Q. Li, V. K. Gupta, M. Lebeau, S. Pensotti, Valery Schegelsky, Antonino Zichichi, D. Prokofiev, Luisa Cifarelli, M. A. Rahaman, X. L. Wang, D. Perret-Gallix, M. Chemarin, Giovanni Passaleva, T. Azemoon, A. Favara, G. M. Chen, F. DeNotaristefani, H. Rykaczewski, Giovanni Organtini, Zheng Wang, I. Vodopianov, A. Engler, D. Dufournaud, M. Pauluzzi, H. Milcent, A. Buffini, Zhenyu Zhang, F. Brochu, D. della Volpe, L. Baksay, Aaron Dominguez, L. J. Gutay, H. Wilkens, M. Capell, U. Becker, Marcos Cerrada, Felicitas Pauss, F. C. Erné, A. Krüger, Z. Z. Xu, C. H. Lin, V. Pojidaev, H. S. Fesefeldt, E. Pistolesi, A. Rosca, T. Moulik, A. Seganti, Harvey B Newman, M. Musy, Roberto Battiston, D. Ren, Ya Han Hu, G. S. Muanza, S. Rosier-Lees, Z. A. Liu, P. Le Coultre, M. Basile, D. P. Stickland, Y. H. Chang, Manas Maity, A. Vorvolakos, Lamberto Luminari, R. van Gulik, P. Berges, P. Extermann, Z. Szillasi, Salvatore Mele, Christoph Schäfer, B. Z. Yang, P. Ladron de Guevara, F. J. Eppling, L. W. Jones, Gerjan Bobbink, B. Borgia, S. M. Ting, Jean Fay, D. Mangeol, J. A. van Dalen, S. Saremi, M. Vivargent, D. Piccolo, Maurizio Biasini, J. Ulbricht, Igor Vorobiev, V. Koutsenko, D.W. Schmitz, H. Hofer, P. de Jong, N. Shivarov, D. Luckey, Robert Clare, W. G. Ma, P. Levtchenko, Stefan Roth, Marta Felcini, Panos A Razis, P. Lebrun, Francesco Becattini, Thomas Hebbeker, K. Freudenreich, Paul Lecoq, R. W. Kraemer, B. Tellili, K. L. Tung, Nicola Cavallo, Pierre Lecomte, Jeremy Mans, H. J. Yang, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, R. Ofierzynski, Werner Lustermann, Charles Timmermans, M. Dierckxsens, An.A. Vorobyov, M. Napolitano, H. F. Chen, S. Likhoded, I. Clare, A. Malinin, S. Wynhoff, J. A. Rubio, Simonetta Gentile, A. Balandras, N. Batalova, H. K. Park, M. Acciarri, J. Berdugo, G. Castellini, E. J. Sanchez, Guo-Ming Chen, D. Duchesneau, H. S. Chen, Peter Denes, Peter Raics, L. Servoli, Kajari Mazumdar, X. D. Cai, O. Adriani, Imad Baptiste Laktineh, A. Chen, Z. F. Gong, S. C. Blyth, Marco Meschini, A. Oulianov, C. Palomares, Lucas Taylor, D. van Dierendonck, G. Chiefari, J. Salicio, M. G. Alviggi, S. Cucciarelli, C. Maña, S. Shevchenko, Christopher George Tully, F. Behner, Wolfgang Lohmann, H. Vogt, B. Bertucci, A. Buijs, F. Anselmo, Nicanor Colino, E. Delmeire, F. Pierella, U. K. Chaturvedi, Y. S. Lu, S. C. Tonwar, Frank Filthaut, Alessandra Doria, Thomas Ferguson, A. Shvorob, R. Ranieri, J. H. Field, S. R. Hou, B. Stoyanov, S. Schmidt-Kaerst, M. Wadhwa, D. J. Schotanus, Ren-Yuan Zhu, M. Pedace, G. Landi, Simone Paoletti, A. Gurtu, T. Paul, A. J.M. Muijs, Manjit Kaur, A. Hasan, S. Vlachos, J. Rodin, T. Niessen, E. Valente, G. Viertel, Hans J. Vogel, W. T. Lin, S. Costantini, B. Musicar, H. J. Lee, Marcella Diemoz, P. Bagnaia, C. Dionisi, Pablo Garcia-Abia, A. Bay, B. De La Cruz, Carlo Civinini, G. Raven, L. Xia, D. Kiss, Tariq Aziz, D. Teyssier, M. Aguilar-Benitez, O. Grimm, F. Cotorobai, Herwig Schopper, Crisostomo Sciacca, P. Déglon, B. Zimmermann, Konrad Deiters, G. B. Mohanty, H. Postema, Alberto Aloisio, X. W. Tang, Pàl Hidas, P. A. Piroué, M. Chamizo, S. Bhattacharya, Samuel C.C. Ting, P. Duinker, H. El Mamouni, L. Z. Sun, A. Klimentov, Dong-Hyun Kim, G. Zilizi, L. Bellucci, S. S. Gau, M. Gataullin, A. Stone, Oleg Fedin, Max Weber, H. Anderhub, Michele Guida, B. Smith, S. Braccini, R. de Asmundis, I. Fisk, W. J. Burger, Michael Dittmar, J. D. Swain, A. Böhm, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Batalova, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Allesandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Duforunaud, D., Duinker, P., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Ewers, A., Extermann, P., Fabre, M., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kafer, D., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopal, M., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Roth, S., Rosenbleck, C., Roux, B., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Sudhakar, K., Sultanov, G., Sun, L. Z., Sushkov, S., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Teyssier, D., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Zu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zimmermann, B., Zoller, M., Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Malgeri, Luca, and Pohl, Martin

Subjects
Nuclear and High Energy Physics, Particle physics, ENERGIES, Electron–positron annihilation, FOS: Physical sciences, Cosmic ray, Elementary particle, ddc:500.2, Standard Model Higgs boson, Lower limit, High Energy Physics - Experiment, Standard Model, CROSS-SECTIONS, Nuclear physics, High Energy Physics - Experiment (hep-ex), MUON DETECTOR, cosmic rays, MONTE-CARLO PROGRAM, CALORIMETER, Ciencias Exactas, L3 EXPERIMENT, Physics, CONSTRUCTION, High Energy Physics::Phenomenology, Física, LEP, L3 detector, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

The Standard Model Higgs boson is searched for in 233.2 pb−1 of data collected by the L3 detector at centre of mass energies from 192 GeV to 202 GeV. These data are consistent with the expectations of Standard Model processes and no evidence of a Higgs signal is observed. A lower limit on the mass of the Standard Model Higgs boson of 107.0 GeV is set at the 95% confidence level., Facultad de Ciencias Exactas

Published
2016
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22. Measurement of the W+W-gamma cross section and direct limits on anomalous quartic gauge boson couplings at LEP

Author

Yu. Galaktionov, F. Cesaroni, Peter H. Fisher, Egidio Longo, Lamberto Luminari, H. F. Chen, Riccardo Paramatti, A. Kunin, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Hafeez R Hoorani, S. X. Wu, W. J. Metzger, E. Delmeire, H. Rykaczewski, J. Alcaraz, D. Haas, Giovanni Organtini, U. K. Chaturvedi, H. Wilkens, G. S. Muanza, Jean Fay, Maurizio Biasini, Marta Felcini, Y. S. Lu, Nicola Cavallo, H. K. Park, F. Pierella, M. Vivargent, D. Piccolo, Federico Cindolo, A. Buijs, Inkyu Park, H. El Mamouni, A. Shvorob, R. Ranieri, C. Dionisi, Francesco Becattini, Aleandro Nisati, Speranza Falciano, G. Castellini, A. Straessner, Pablo Garcia-Abia, Pierre Lecomte, G. Chiefari, S. Shevchenko, Joseph Quartieri, G. Forconi, H. Milcent, M. Pohl, Alain Hervé, A. Lebedev, Dong-Chul Son, M. Steuer, J. H. Field, L. Baksay, F. Cotorobai, P. G. Rancoita, T. Angelescu, Luca Lista, Z. F. Gong, S. C. Tonwar, Frank Filthaut, H. J. Yang, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, B. Stoyanov, G. Ruggiero, B. N. Jin, H. Nowak, Roberto Battiston, Jozsef Toth, Claudio Luci, D. Pandoulas, J. J. Blaising, J. Hirschfelder, T. Moulik, Stefano Giagu, A. C. Weber, S. Schmidt-Kaerst, J. Casaus, A. Bay, A. Mihul, Carlo Civinini, G. Raven, L. Xia, G. Alemanni, R. Ofierzynski, D. Vicinanza, D. Prokofiev, S. Likhoded, F. Behner, Oleg Fedin, Gerjan Bobbink, Luisa Cifarelli, W. Kittel, Marco Pieri, Pierluigi Paolucci, C. C. Samuel Ting, M. A. Rahaman, D. Perret-Gallix, M. Aguilar-Benitez, Mariagrazia Alviggi, B. Borgia, D. P. Stickland, Y. H. Chang, J. Ulbricht, O. Grimm, Herwig Schopper, S. C. Yeh, S. Wynhoff, Jeremy Mans, Thomas Ferguson, Sabine Riemann, Alessandra Doria, G. Mirabelli, R. van Gulik, Igor Vorobiev, W. Wallraff, Max Weber, C. G. Yang, P. Extermann, Salvatore Mele, I. Vetlitsky, H. Postema, G. Ambrosi, L. Romero, S. Reucroft, B. Tellili, M. Acciarri, Guo-Ming Chen, R. Ramelli, Peter Raics, Vladimir Andreev, J. Pothier, Yu. Zalite, A. M. Cartacci, A. C. König, K. Lübelsmeyer, F. L. Linde, S. Banerjee, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, Dimitri Bourilkov, G. Marian, S. Sarkar, P. Levtchenko, Pàl Hidas, P. Wienemann, A. Barczyk, Georgi Sultanov, A. Chen, D. van Dierendonck, P. Spillantini, Kajari Mazumdar, I. Clare, S. Bhattacharya, Panos A Razis, X. D. Cai, T. Sztaricskai, M. Fabre, T. S. Dai, B. Zimmermann, Mingming Yang, R. A. Khan, An. Zalite, S. Patricelli, Raffaello D'Alessandro, J. Salicio, H. Anderhub, A. Buffini, Konrad Deiters, D.W. Schmitz, M. Bourquin, P. de Jong, N. Shivarov, B. Petersen, G. J. Grenier, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, C-Q. Li, V. K. Gupta, S. R. Hou, M. Wadhwa, D. Dufournaud, Leonardo Merola, D. J. Schotanus, D. Hatzifotiadou, Ren-Yuan Zhu, E. Fiandrini, Giovanni Passaleva, Joachim Mnich, P. Achard, W. J. Burger, G. B. Mohanty, Alberto Aloisio, Ph. Lebrun, M. Pedace, Adrian Biland, Michael Dittmar, R. Berbeco, Gyorgy Vesztergombi, Luca Malgeri, L. Z. Sun, Z. A. Liu, A. Vorvolakos, F. DeNotaristefani, M. N. Kienzle-Focacci, J. Allaby, A. Csilling, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, L. Tauscher, T. Azemoon, M. Lebeau, A. Gurtu, Laszlo Boldizsar, L. J. Gutay, Michele Guida, B. Smith, S. Braccini, J. D. Swain, Z. Z. Xu, C. H. Lin, R. Leiste, Christoph Paus, P. Violini, A. De Salvo, P. Bartalini, K. Sudhakar, Simonetta Gentile, A. Balandras, M. Chemarin, S. Saremi, Francesca Nessi-Tedaldi, A. Arefiev, V. Pojidaev, J. Berdugo, Ya Han Hu, E. J. Sanchez, M. Napolitano, U. Becker, R. de Asmundis, I. Fisk, Marcos Cerrada, A. Seganti, I. Duran, A. Oulianov, C. Palomares, Harvey B Newman, M. Musy, Manas Maity, P. Berges, M. von der Mey, R. R. McNeil, I. Vodopianov, A. Engler, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, G. Carlino, X. W. Tang, P. A. Piroué, M. Chamizo, Peter Denes, J. A. Rubio, D. Kiss, Tariq Aziz, Paolo Bagnaia, F. J. Eppling, L. W. Jones, D. Duchesneau, H. S. Chen, An.A. Vorobyov, J. B. Ye, G. M. Chen, L. Servoli, Aaron Dominguez, A. Hasan, M. Capell, Felicitas Pauss, J. D. Burger, T. Siedenburg, L. Bellucci, S. M. Ting, A. Böhm, M. Rescigno, G. Rahal-Callot, N. Raja, X. L. Wang, M. Pauluzzi, G. Holzner, S. Rosier-Lees, H. S. Fesefeldt, E. Pistolesi, K. Riles, O. Adriani, S. C. Blyth, Marco Meschini, P. Le Coultre, M. Basile, H. Suter, Ia Iashvili, F. Marzano, G. Coignet, W. Krenz, Imad Baptiste Laktineh, Lucas Taylor, D. Ren, Crisostomo Sciacca, D. Mangeol, Y. Uchida, Francesca Cavallari, D. Luckey, J.P. Martin, G. Y. Zhu, E. Shumilov, Minhong Wang, M. P. Sanders, B. L. Betev, V. Shoutko, Christopher George Tully, Dong-Hyun Kim, Claudia Cecchi, J. A. van Dalen, G. Zilizi, Z. Szillasi, Wolfgang Lohmann, H. Vogt, B. Bertucci, V. Koutsenko, G. Landi, Simone Paoletti, B. Musicar, F. Anselmo, Nicanor Colino, A. J.M. Muijs, Manjit Kaur, G. Cara Romeo, B. P. Roe, F. Brochu, D. della Volpe, J. G. Branson, H. J. Lee, Marcella Diemoz, S. Villa, S. N. Ganguli, A. Degré, E. Valente, R. Barillère, G. Viertel, Hans J. Vogel, W. T. Lin, S. Costantini, T. Paul, S. V. Baldew, D. O. Prokofiev, Jasper Kirkby, M. A. Falagan, M. Zöller, Anna Katharina Kopp, V. Plyaskin, S. Vlachos, Alexei Raspereza, M. T. Dova, J. Rodin, A. Krüger, T. Niessen, F. C. Erné, K. Freudenreich, S. S. Gau, M. Gataullin, A. Stone, P. Duinker, S. Cucciarelli, C. Maña, A. Klimentov, B. De La Cruz, P. Déglon, A. Favara, Zheng Wang, Zhenyu Zhang, A. Rosca, M. E. Sarakinos, P. Ladron de Guevara, A. Bajo, G. Schwering, C. Furetta, L. Lugnier, J. K. Kim, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Banerjee, S. W., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Hu, Y., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Violini, P., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zimmermann, B., Zoller, M., Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, and IHEF (IoP, FNWI)

Subjects
Nuclear and High Energy Physics, Photon, PAIR PRODUCTION, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Standard Model, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), High Energy Physics - Experiment (hep-ex), MUON DETECTOR, Quartic function, 0103 physical sciences, MONTE-CARLO PROGRAM, CALORIMETER, 010306 general physics, Ciencias Exactas, L3 EXPERIMENT, Physics, Gauge boson, Luminosity (scattering theory), CONSTRUCTION, 010308 nuclear & particles physics, Física, LEP, COLLIDERS, L3 detector, SINGLE, MISSING ENERGY, High Energy Physics::Experiment
Abstract

The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.8 pby1 . Based on a sample of 42 selected WqWy candidates containing an isolated hard photon, the WqWyg cross section, defined within phase-space cuts, is measured to q y be: s WW s290"80"16 fb, consistent with the Standard Model expectation. Including the process e e anngg, limits g are derived on anomalous contributions to the Standard Model quartic vertices WqWygg and WqWyZg at 95% CL: y0.043 GeVy2-a rL2-0.043 GeVy2 , y0.08 GeVy2-a rL2-0.13 GeVy2 , y0.41 GeVy2-a rL2-0.37 GeVy2, Facultad de Ciencias Exactas

Published
2016

23. QCD studies in e(+)e(-) annihilation from 30 GeV to 189 GeV

Author

M. Vivargent, D. Piccolo, Ren-Yuan Zhu, Luciano Barone, A. Barczyk, Adrian Biland, M. Pedace, C. Dionisi, Vladimir Andreev, S. C. Blyth, Marco Meschini, G. Landi, D. Ruschmeier, Christopher George Tully, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Simone Paoletti, Nicanor Colino, R. Leiste, Christoph Paus, S. X. Wu, A. Gurtu, P. G. Rancoita, Peter Denes, G. Viertel, Paolo Bagnaia, Pablo Garcia-Abia, F. Pierella, Federico Cindolo, S. C. Tonwar, Inkyu Park, A. Favara, H. Nowak, Frank Filthaut, Thomas Ferguson, Helmut Vogel, A. J.M. Muijs, M. N. Kienzle-Focacci, D. Vicinanza, Manjit Kaur, Alain Hervé, Lamberto Luminari, Peter H. Fisher, G. Forconi, Yu. Galaktionov, C-Q. Li, A. Hasan, V. K. Gupta, A. Csilling, Zheng Wang, Zhenyu Zhang, J. Alcaraz, Aleandro Nisati, W. Wallraff, Jozsef Toth, Claudio Luci, D. Pandoulas, Speranza Falciano, Peter Raics, A. Straessner, Luca Lista, S. Costantini, I. Vodopianov, A. Engler, M. Capell, R. Barillère, A. Rosca, M. E. Sarakinos, Joseph Quartieri, S. Banerjee, Kajari Mazumdar, M. Steuer, M. A. Rahaman, D. Perret-Gallix, Marco Pieri, H. S. Fesefeldt, E. Pistolesi, Pierre Lecomte, A. Buijs, H. El Mamouni, F. Di Lodovico, X. D. Cai, Jeremy Mans, A. Bay, Pierluigi Paolucci, Carlo Civinini, M. Rescigno, C. C. Samuel Ting, A. Arefiev, R. R. McNeil, G. Carlino, W. Kittel, F. DeNotaristefani, P. Marchesini, G. Marian, P. Ladron de Guevara, Werner Lustermann, Charles Timmermans, M. Dierckxsens, R. van Gulik, P. Extermann, Salvatore Mele, A. Malinin, Roberto Battiston, Tariq Aziz, Willis Lin, D. Prokofiev, M. Acciarri, Sabine Riemann, G. Raven, V. Brigljevic, Christoph Schäfer, B. Z. Yang, L. Xia, H. Hofer, Guo-Ming Chen, S. Reucroft, G. Ambrosi, K. L. Tung, Luisa Cifarelli, Gerjan Bobbink, B. Borgia, Giovanni Passaleva, P. Duinker, G. Ruggiero, A. Mihul, G. Alemanni, G. Holzner, B. N. Jin, J. Ulbricht, A. Chen, D. van Dierendonck, M. Aguilar-Benitez, O. Grimm, K. Riles, P. Wienemann, Georgi Sultanov, J. Salicio, T. S. Dai, A. C. Weber, Egidio Longo, R. A. Khan, A. M. Cartacci, Oleg Fedin, B. Tellili, F. Cesaroni, A. Lebedev, Ya Han Hu, J. K. Kim, Dong-Chul Son, M. Fabre, Mingming Yang, Manas Maity, Herwig Schopper, J. J. Blaising, J. Hirschfelder, Stefano Giagu, J.P. Martin, F. Marzano, G. Coignet, A. Klimentov, Max Weber, Crisostomo Sciacca, W. Krenz, P. Berges, G. Mirabelli, J.V. Allaby, S. Patricelli, I. Clare, H. Postema, Emilio Leonardi, S. V. Baldew, D. O. Prokofiev, E. Delmeire, U. K. Chaturvedi, M. Chemarin, K. Lübelsmeyer, D. Dufournaud, H. Anderhub, S. C. Yeh, D. Hatzifotiadou, D. Sciarrino, Y. S. Lu, G. M. Chen, Aaron Dominguez, Laszlo Boldizsar, K. Sudhakar, Riccardo Paramatti, Konrad Deiters, Nicola Cavallo, Z. Z. Xu, A. Shvorob, A. Oulianov, C. Palomares, C. H. Lin, Felicitas Pauss, G. B. Mohanty, A. Kunin, Alberto Aloisio, Michele Guida, B. Smith, H. K. Park, V. Pojidaev, Dong-Hyun Kim, L. Baksay, O. Adriani, F. Cotorobai, Jasper Kirkby, M. A. Falagan, M. von der Mey, J. H. Field, A. Bajo, S. Rosier-Lees, I. Vetlitsky, A. Buffini, J. B. Ye, Ph. Lebrun, R. Ramelli, G. Castellini, S. Braccini, Hafeez R Hoorani, G. Zilizi, Imad Baptiste Laktineh, Lucas Taylor, P. Le Coultre, M. Basile, B. Stoyanov, W. J. Burger, M. Zöller, U. Becker, D.W. Schmitz, Z. F. Gong, B. Musicar, T. Sztaricskai, M. G. Alviggi, M. W. Gruenewald, P. de Jong, N. Shivarov, S. Schmidt-Kaerst, G. Schwering, Michael Dittmar, Anna Katharina Kopp, S. S. Gau, X. W. Tang, I. Duran, M. Campanelli, R. de Asmundis, I. Fisk, T. Angelescu, L. J. Gutay, Y. Uchida, Robert Clare, D. Mangeol, Raffaello D'Alessandro, P. A. Piroué, W. J. Metzger, M. Chamizo, Kati Lassila-Perini, W. G. Ma, Thomas Hebbeker, V. Plyaskin, I. Josa-Mutuberria, M. Kräber, Z. A. Liu, A. Vorvolakos, C. Furetta, Paul Lecoq, R. W. Kraemer, D. Luckey, J. D. Swain, M. Napolitano, F. J. Eppling, L. W. Jones, M. Gataullin, J. Casaus, Minhong Wang, M. P. Sanders, J. A. van Dalen, L. Lugnier, D. Kiss, S. M. Ting, B. L. Betev, R. Berbeco, D. Haas, A. Stone, H. J. Lee, S. Saremi, D. Duchesneau, H. S. Chen, L. Servoli, Leonardo Merola, Alexei Raspereza, M. T. Dova, F. L. Linde, J. G. Branson, S. Villa, A. Böhm, An. Zalite, Marcella Diemoz, S. Pensotti, Valery Schegelsky, Antonino Zichichi, C. G. Yang, L. Tauscher, J. Pothier, Yu. Zalite, P. Molnar, J. M. Le Goff, J. Yamamoto, B. De La Cruz, H. Rykaczewski, T. Azemoon, Giovanni Organtini, N. Gheordanescu, S. N. Ganguli, A. Krüger, H. Wilkens, H. F. Chen, Maurizio Biasini, A. Degré, Marcos Cerrada, G. S. Muanza, J. A. Rubio, Axel König, P. Déglon, Marta Felcini, Jean Fay, Pàl Hidas, S. Bhattacharya, G. Chiefari, S. Shevchenko, L. Z. Sun, F. Behner, Francesco Becattini, L. Bellucci, Alessandra Doria, S. R. Hou, M. Wadhwa, D. J. Schotanus, H. J. Yang, S. Likhoded, S. Wynhoff, G. Cara Romeo, B. P. Roe, F. Brochu, D. della Volpe, H. Milcent, A. A. Vorobyov, M. Pohl, T. Moulik, Z. Szillasi, D. P. Stickland, Y. H. Chang, V. Koutsenko, Dimitri Bourilkov, L. Romero, P. Spillantini, S. Sarkar, B. Petersen, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, A. De Salvo, P. Bartalini, A. Seganti, Harvey B Newman, M. Musy, M. Bourquin, G. J. Grenier, Joachim Mnich, P. Achard, A. Robohm, Francesca Nessi-Tedaldi, J. D. Burger, T. Siedenburg, G. Rahal-Callot, N. Raja, H. Suter, Ia Iashvili, Francesca Cavallari, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, Igor Vorobiev, P. Levtchenko, Panos A Razis, Simonetta Gentile, A. Balandras, J. Berdugo, E. J. Sanchez, R. Faccini, X. L. Wang, M. Pauluzzi, D. Ren, F. C. Erné, K. Freudenreich, S. Cucciarelli, C. Maña, T. Paul, S. Vlachos, J. Rodin, T. Niessen, F. Ferroni, E. Valente, M. Lebeau, Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, Sciarrino, Deborah, L3 (IHEF, IoP, FNWI), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brigljevic, V., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Campanelli, M., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, G., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Faccini, R., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hazifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Hu, Y., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lassila Perini, K., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marchesini, P., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Molnar, P., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. 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Subjects
Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Electron–positron annihilation, Hadron, FOS: Physical sciences, ddc:500.2, EVENT SHAPE DISTRIBUTIONS, 01 natural sciences, 7. Clean energy, Power law, High Energy Physics - Experiment, CROSS-SECTIONS, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, POWER CORRECTIONS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ANGLE BHABHA SCATTERING, 010306 general physics, Ciencias Exactas, Ansatz, L3 EXPERIMENT, Quantum chromodynamics, Coupling constant, Physics, Annihilation, HADRONIC EVENTS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, LEPTON PAIR PRODUCTION, structure of hadronic events, centre-of-mass energies, L3 detector, l3 collaboration, High Energy Physics::Experiment, Energy (signal processing), Particle Physics - Experiment, TO-LEADING ORDER
Abstract

We present results obtained from a study of the structure of hadronic events recorded by the L3 detector at various centre-of-mass energies. The distributions of event shape variables and the energy dependence of their mean values are measured from 30 GeV to 189 GeV and compared with various QCD models. The energy dependence of the moments of event shape variables is used to test a power law ansatz for the non-perturbative component. We obtain a universal value of Ž 2 the non-perturbative parameter a s 0.537 ± 0.073. From a comparison with resummed O(αs2)QCD calculations, we 0 s determine the strong coupling constant at each of the selected energies. The measurements demonstrate the running of αs as expected in QCD with a value of αs(mZ) = 0.1215 ± 0.0012 (exp) ± 0.0061 (th)., Facultad de Ciencias Exactas

Published
2016

24. Search for extra dimensions in boson and fermion pair production in e(+)e(-) interactions at LEP

Author

F. C. Erné, Yu. Galaktionov, C-Q. Li, J. Alcaraz, V. K. Gupta, H. Milcent, F. DeNotaristefani, K. Freudenreich, M. Rescigno, R. Barillère, A. Mihul, T. Moulik, Egidio Longo, G. Alemanni, H. Anderhub, S. Cucciarelli, C. Maña, S. C. Yeh, Manas Maity, P. Berges, A. Barczyk, Valery Schegelsky, H. Rykaczewski, Giovanni Organtini, S. C. Blyth, H. Wilkens, Jean Fay, S. X. Wu, Nicolas Produit, Helmut Vogel, T. Angelescu, J. A. van Dalen, Michele Guida, B. Smith, S. Braccini, Pàl Hidas, S. Bhattacharya, Adrian Biland, G. Landi, A. Buijs, Marco Meschini, Dimitri Bourilkov, M. Steuer, L. Z. Sun, J. Casaus, P. Laurikainen, D. O. Prokofiev, Alessandra Doria, F. Muheim, P. Spillantini, B. Petersen, D. P. Stickland, F. Ziegler, Y. H. Chang, P. Marchesini, Roberto Battiston, V. Brigljevic, Peter Raics, C. G. Yang, J. Pothier, Raffaello D'Alessandro, Yu. Zalite, Maurizio Biasini, Jasper Kirkby, M. A. Falagan, M. Zöller, R. de Asmundis, A. Oulianov, I. Fisk, M. Lebeau, M. A. Rahaman, D. Perret-Gallix, C. Palomares, Ren-Yuan Zhu, Luciano Barone, Gyorgy Vesztergombi, Luca Malgeri, G. Schwering, I. Vodopianov, Marta Felcini, Gerjan Bobbink, B. Borgia, B. N. Jin, J. Ulbricht, Christopher George Tully, Kajari Mazumdar, X. D. Cai, Leonardo Merola, Peter H. Fisher, Francesco Becattini, Anna Katharina Kopp, L. Bellucci, A. Engler, Francesca Cavallari, J. Busenitz, A. Arefiev, C. Dionisi, F. Cindolo, A. De Salvo, M. Capell, L. Tauscher, K. Sudhakar, L. Romero, R. R. McNeil, Wolfgang Lohmann, H. Vogt, B. Bertucci, T. Azemoon, M. Pedace, T. van Rhee, C. Furetta, Pablo Garcia-Abia, Alain Hervé, G. Carlino, M. Wadhwa, W. Kittel, Y. D. Oh, D. J. Schotanus, A. Bay, R. van Gulik, P. Bartalini, Aleandro Nisati, Kati Lassila-Perini, H. S. Fesefeldt, E. Pistolesi, S. C. Kim, Lamberto Luminari, M. von der Mey, S. Sarkar, I. Clare, F. Anselmo, Nicanor Colino, A. Gurtu, T. Paul, V. Plyaskin, J. P. Martin, P. Extermann, Salvatore Mele, L. Lugnier, Carlo Civinini, P. Lecomte, Riccardo Paramatti, Christoph Schäfer, B. Z. Yang, H. Hofer, G. Raven, H. J. Yang, L. Xia, J. B. Ye, A. Kunin, Joseph Quartieri, K. L. Tung, A. Seganti, Harvey B Newman, M. Musy, Hafeez R Hoorani, Marcos Cerrada, S. Pensotti, M. Bourquin, G. Holzner, W. J. Metzger, Vladimir Andreev, D. Ruschmeier, An.A. Vorobyov, M. Aguilar-Benitez, H. El Mamouni, D. Haas, M. T. Dova, F. L. Linde, O. Grimm, F. Di Lodovico, G. Y. Zhu, J. Tóth, E. Shumilov, Herwig Schopper, A. Hasan, Axel König, R. Leiste, K. Riles, Christoph Paus, R. C. Ball, Joachim Mnich, D. H. Kim, F. Marzano, G. Coignet, V. Shoutko, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, P. Achard, H. Postema, A. Favara, S. Wynhoff, A. Lebedev, Dong-Chul Son, P. Molnar, Simone Paoletti, Marco Pieri, M. Vivargent, D. Piccolo, Dong-Hyun Kim, H. F. Chen, A. J.M. Muijs, Aaron Dominguez, M. G. Alviggi, Manjit Kaur, Felicitas Pauss, W. Krenz, G. Zilizi, B. Monteleoni, Z. A. Liu, G. Forconi, A. Vorvolakos, A. Robohm, Zheng Wang, J. J. Blaising, J. Hirschfelder, Stefano Giagu, Pierluigi Paolucci, D. Kamrad, Werner Lustermann, Charles Timmermans, S. Rosier-Lees, A. Malinin, Zhenyu Zhang, U. K. Chaturvedi, P. Le Coultre, M. Basile, Y. S. Lu, S. Saremi, Samuel C.C. Ting, A. C. Weber, R. Ostonen, T. Sztaricskai, Oleg Fedin, A. Shvorob, Claudio Luci, Max Weber, G. Marian, G. Chiefari, S. Shevchenko, A. Rosca, Igor Vorobiev, Francesca Nessi-Tedaldi, Howard A. Stone, P. Levtchenko, M. Campanelli, A. Zichichi, J. H. Field, G. Passaleva, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, D. Mangeol, J. K. Kim, F. Behner, Peter Denes, M. E. Sarakinos, R. Ramelli, D. Luckey, I. Vetlitsky, Panos A Razis, J. D. Burger, T. Siedenburg, B. Stoyanov, G. Rahal-Callot, N. Raja, J. M. Le Goff, N. Gheordanescu, D.W. Schmitz, G. Pascale, S. Schmidt-Kaerst, D. Pandoulas, An. Zalite, H. J. Lee, Marcella Diemoz, D. Kiss, Paolo Bagnaia, L. Cifarelli, P. de Jong, N. Shivarov, Robert Clare, G. Mirabelli, W. G. Ma, M. Fabre, K. Lübelsmeyer, P. Lebrun, P. Ladron de Guevara, G. Ambrosi, B. Cozzoni, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, J. A. Rubio, S. R. Hou, F. Pierella, M. Napolitano, P. Wienemann, Georgi Sultanov, H. Suter, Ia Iashvili, M. Acciarri, Guo-Ming Chen, T. S. Dai, R. A. Khan, F. Cesaroni, D. Duchesneau, H. S. Chen, L. Servoli, A. Buffini, G. Grenier, E. Valente, W. J. Burger, D. van Dierendonck, Mingming Yang, G.S. Muanza, Simonetta Gentile, A. Button, J. Salicio, Emilio Leonardi, Michael Dittmar, S. C. Tonwar, M. Chemarin, A. Balandras, Frank Filthaut, N. Cavallo, J. Berdugo, D. Sciarrino, G. M. Chen, Thomas Ferguson, J. D. Swain, D. Peach, S. Reucroft, E. Fiandrini, S. Costantini, E. J. Sanchez, L. Baksay, F. Cotorobai, A. Böhm, R. Faccini, X. L. Wang, G. G.G. Massaro, A. Chen, D. Ren, A. P. Colijn, P. Duinker, A. Klimentov, H. K. Park, G. Castellini, B. De La Cruz, P. Déglon, S. S. Gau, M. Gataullin, A. Stone, Z. F. Gong, M. N. Kienzle-Focacci, A. Csilling, D. Prokofiev, L. J. Gutay, U. Becker, I. Duran, F. J. Eppling, L. W. Jones, S. M. Ting, M. Pauluzzi, Despina Hatzifotiadou, J.V. Allaby, S. Patricelli, Laszlo Boldizsar, L. Fredj, J. G. Branson, S. Villa, S. N. Ganguli, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, A. Degré, X. W. Tang, P. A. Piroué, G. Viertel, M. Chamizo, P. G. Rancoita, H. Nowak, D. Vicinanza, W. Wallraff, S. Banerjee, Tariq Aziz, Crisostomo Sciacca, Z. Szillasi, V. Koutsenko, G. Cara Romeo, B. P. Roe, C. Cecchi, F. Brochu, D. della Volpe, M. Pohl, A. M. Cartacci, D. Dufournaud, S. W. Banerjee, I. H. Park, Z. Z. Xu, C. H. Lin, S. Vlachos, V. Pojidaev, J. Rodin, T. Niessen, F. Ferroni, Y. Uchida, Minhong Wang, M. P. Sanders, B. L. Betev, Speranza Falciano, A. Straessner, Luca Lista, Willis Lin, Sabine Riemann, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, B., Anderhub, H., Andreev, V. 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Subjects
Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, ENERGIES, QED CORRECTIONS, FOS: Physical sciences, 01 natural sciences, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, REALISTIC APPROACH, Ciencias Exactas, Boson, L3 EXPERIMENT, Physics, electroweak interaction, 010308 nuclear & particles physics, Electroweak interaction, High Energy Physics::Phenomenology, Graviton, Física, z boson, large electron positron collider, Extra dimensions, Pair production, Large Electron–Positron Collider, High Energy Physics::Experiment, Electroweak scale, Particle Physics - Experiment
Abstract

Extra spatial dimensions are proposed by recent theories that postulate the scale of gravity to be of the same order as the electroweak scale. A sizeable interaction between gravitons and Standard Model particles is then predicted. Effects of these new interactions in boson and fermion pair production are searched for in the data sample collected at centre-of-mass energies above the Z pole by the L3 detector at LEP. In addition, the direct production of a graviton associated with a Z boson is investigated. No statistically significant hints for the existence of these effects are found and lower limits in excess of 1 TeV are derived on the scale of this new theory of gravity, Facultad de Ciencias Exactas

Published
2016
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25. SEARCH FOR NEUTRAL CHARMLESS B-DECAYS AT LEP

Author

S. Easo, Kati Lassila-Perini, D.W. Schmitz, G. Pascale, V. Plyaskin, Samuel C.C. Ting, J. Y. Zeng, N. Shivarov, Claudio Luci, M. Rescigno, M. T. Dova, G. Passaleva, M. W. Gruenewald, I. Josa-Mutuberria, J. Rodin, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, M. T. Choi, Francesca Nessi-Tedaldi, F. C. Erné, P. Schmitz, Alexei Klimentov, S. Petrak, H. S. Chen, B. Lindemann, J. D. Burger, G. Rahal-Callot, H. El Mamouni, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Alessandra Doria, Tariq Aziz, N. Scholz, S. R. Hou, M. Wadhwa, D. J. Schotanus, H. O. Cohn, Marcella Diemoz, M. Vivargent, L. Servoli, Igor Vorobiev, K. Freudenreich, C. Maña, I. C. Brock, T. Angelescu, E. Lieb, J. Casaus, Yu. Kamyshkov, Helmut Vogel, S. Mele, Kajari Mazumdar, Dai-Sik Kim, F. Di Lodovico, H. Rykaczewski, Giovanni Organtini, G. M. Bilei, A. Arefiev, Yu. Efremenko, Aa Vorobyov, A. Tsaregorodtsey, P. Bartalini, P. Levtchenko, Panos A Razis, F. Ferroni, P. Laurikainen, S. Müller, B. L. Betev, A. Lebedev, Dong-Chul Son, T. Kramer, R. Barillère, E. Brambilla, E. Valente, D. McNally, O. Toker, Y. Zeng, C. G. Yang, Xd Cai, J. J. Blaising, Stefano Giagu, K. Riles, G. Viertel, R. Fabbretti, C. Lapoint, S. Morganti, Y. Karyotakis, J. Berdugo, F. Marzano, Z. A. Liu, X. Y. Yao, Luca Lista, Mariagrazia Alviggi, G. Coignet, W. Krenz, M. Möller, J. G. Xu, H. F. Chen, M. Lenti, A. Buytenhuijs, Stefan Roth, G. Schwering, K. Schultze, H. Suter, G. F. Susinno, D. Goujon, Vincenzo Innocente, D. Fernandez, Juven Wang, I. Vetlitsky, J. Schwenke, S. Costantini, E. J. Sanchez, S. X. Wu, Marco Meschini, D. Kirkby, J. M. Le Goff, Crisostomo Sciacca, N. Gheordanescu, J. C. Pinto, Jasper Kirkby, J.V. Allaby, S. Patricelli, Sabine Riemann, R. Weill, F. Muheim, Roberto Battiston, Gerjan Bobbink, Dimitri Bourilkov, B. Borgia, S. S. Gau, M. Sassowsky, A. J.W. van Mil, H. De Boeck, Y. J. Pei, H. Kuijten, A. C. Weber, J. Busenitz, W. van Rossum, C. Burgos, Adrian Biland, G. 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S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Ludovici, L., Luminari, L., Lustermann, W., W. G., Ma, Macchiolo, A., Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangla, S., Maolinbay, M., Marchesini, P., Marin, A., Martin, J. P., Marzano, F., G. G. G., Mazumdar, K., Mcnally, D., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Mi, Y., Mihul, A., A. J. W., Mirabelli, G., Mnich, J., Moller, M., Monteleoni, B., Moore, R., Morand, R., Morganti, S., Mount, R., Muller, S., Muheim, F., Nagy, E., Nahn, S., Napolitano, Marco, Nessitedaldi, F., Newman, H., Nippe, A., Nowak, H., Organtini, G., Ostonen, R., Pandoulas, D., Paoletti, S., Paolucci, P., Pascale, G., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pei, Y. J., Pensotti, S., Perretgallix, D., Petrak, S., Pevsner, A., Piccolo, D., Pieri, M., Pinto, J. C., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Produit, N., Raghavan, R., Rahalcallot, G., Rancoita, P. G., Rattaggi, M., Raven, G., Razis, P., Read, K., Redaelli, M., Ren, D., Rescigno, M., Reucroft, S., Ricker, A., Riemann, S., Riemers, B. C., Riles, K., Rind, O., Ro, S., Robohm, A., Rodin, J., Rodriguez, F. J., Roe, B. P., Rohner, M., Rohner, S., Romero, L., Rosierlees, S., Rosselet, P., Vanrossum, W., Roth, S., Rubio, J. A., Rykaczewski, H., Salicio, J., Salicio, J. M., Sanchez, E., Santocchia, A., Sarakinos, M. E., Sarkar, S., Sassowsky, M., Sauvage, G., Schafer, C., Schegelsky, V., Schmitz, D., Schmitz, P., Schneegans, M., Schoeneich, B., Scholz, N., Schopper, H., Schotanus, D. J., Schulte, R., Schultze, K., Schwenke, J., Schwering, G., Sciacca, Crisostomo, Seiler, P. G., Sens, J. C., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shukla, J., Shumilov, E., Son, D., Sopczak, A., Soulimov, V., Smith, B., Spickermann, T., Spillantini, P., Steuer, M., Stickland, D. P., Sticozzi, F., Stone, H., Stoyanov, B., Strauch, K., Sudhakar, K., Sultanov, G., Sun, L. Z., Susinno, G. F., Suter, H., Swain, J. D., Tang, X. W., Tauscher, L., Taylor, L., S. C. C., Ting, S. M., Toker, O., Tonisch, F., Tonutti, M., Tonwar, S. C., Toth, J., Tsaregorodtsev, A., Tsipolitis, G., Tully, C., Tuchscherer, H., Ulbricht, J., Urban, L., Uwer, U., Valente, E., Vandewalle, R. T., Vetlitsky, I., Viertel, G., Vivargent, M., Volkert, R., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vuilleumier, L., Wadhwa, M., Wallraff, W., Wang, J. C., Wang, X. L., Wang, Y. F., Wang, Z. M., Weber, A., Weill, R., Willmott, C., Wittgenstein, F., S. X., Wu, Wynhoff, S., Xu, J., Z. Z., Xu, Yang, B. Z., Yang, C. G., Yao, X. Y., J. B., Ye, Yeh, S. C., You, J. M., Zaccardelli, C., Zalite, A., Zemp, P., Zeng, J. Y., Zeng, Y., Zhang, Z., Zhang, Z. P., Zhou, B., Zhou, G. J., Zhou, J. F., Zhou, Y., Zhu, G. Y., Zhu, R. Y., Zichichi, A., and B. C. C.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Higgs boson, L3 experiment, Hadron, Física, large electron positron collider, MESONS, 01 natural sciences, CP-VIOLATION, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Particle Physics - Experiment, Ciencias Exactas, L3 EXPERIMENT
Abstract

A search for rare charmless decays of B0d and B0s mesons has been performed in the exclusive channels B0d(s) →ηη0, B0d(s) →ηπ0 and B0d(s) →π0π0. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B0d→ηη) −4, Br(B0s →ηη) < 1.5 x 10−3, Br(B0d→ηπ0) < 2.5 x 10−4, Br(B0s→ηπ0) < 1.0 x 10−3, Br(B0d→π0π0) < 6.0 x 10−5, Br(B0s→π0π0) < 2.1 x 10−4. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes., Facultad de Ciencias Exactas

Published
2016

26. Coupling of Discontinuous Galerkin Finite Element and Boundary Element Methods

Author

G. Of, G. J. Rodin, O. Steinbach, and M. Taus

Subjects
Computational Mathematics, Finite element limit analysis, Discontinuous Galerkin method, Applied Mathematics, Mathematical analysis, Spectral element method, Smoothed finite element method, Mixed finite element method, Boundary knot method, Finite element method, Extended finite element method, Mathematics
Abstract

This paper presents three new coupling methods for interior penalty discontinuous Galerkin finite element methods and boundary element methods. The new methods allow one to use discontinuous basis functions on the interface between the subdomains represented by the finite element and boundary element methods. This feature is particularly important when discontinuous Galerkin finite element methods are used. Error and stability analysis is presented for one of the methods. Numerical examples suggest that all three methods exhibit very similar convergence properties, consistent with available theoretical results.

Published
2012
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27. The resistance curve for subcritical cracks near the threshold

Author

Gregory J. Rodin, Dmitrii E. Makarov, and Haifeng Zhao

Subjects
Fracture toughness, Materials science, Mechanics of Materials, business.industry, Modeling and Simulation, Computational Mechanics, Fracture mechanics, Structural engineering, Mechanics, business, Crack growth resistance curve, Brittle fracture, Lattice model (physics)
Abstract

Thermodynamic analysis of brittle fracture specimens near the threshold developed by Rice (Thermodynamics of quasi-static growth of Griffith cracks, J Mech Phys Solid 26:61–78, 1978) is extended to specimens undergoing microstructural changes. The proposed extension gives rise to a generalization of the threshold concept that mirrors the way the resistance curve generalizes the fracture toughness. In the absence of experimental data, the resistance curve near the threshold is constructed using a basic lattice model.

Published
2010
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28. Boundary algebraic equations for lattice problems

Author

Gregory J. Rodin and Per-Gunnar Martinsson

Subjects
General Mathematics, Mathematical analysis, General Engineering, General Physics and Astronomy, Mixed boundary condition, Robin boundary condition, Nonlinear system, Algebraic equation, symbols.namesake, Dirichlet boundary condition, symbols, Boundary value problem, Boundary element method, Mathematics, Numerical partial differential equations
Abstract

Procedures for constructing boundary integral equations equivalent to linear boundary-value problems governed by partial differential equations are well established. In this paper, it is demonstrated how these procedures can be extended to linear boundary-value problems defined on lattices and governed by algebraic (‘difference’) equations. The boundary equations that arise are then themselves algebraic equations. Such ‘boundary algebraic equations’ (BAEs) are derived for fundamental boundary-value problems defined on both perfect lattices and lattices with defects. It is demonstrated that key advantages of representing a continuum boundary-value problem as an equation on the boundary, such as favourable spectral properties and minimal problem size, are preserved in the lattice environment. Certain spectral properties of BAEs are established rigorously, whereas others are supported by numerical experiments.

Published
2009
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29. Crack-Tip Parameters in Polycrystalline Plates with Soft Grain Boundaries

Author

Gregory J. Rodin, Roberto Ballarini, and Yuping Wang

Subjects
Engineering drawing, Materials science, Mechanical Engineering, Micromechanics, Microstructure, Condensed Matter::Materials Science, Fracture toughness, Mechanics of Materials, Grain boundary, Crystallite, Composite material, Dislocation, Elastic modulus, Stress intensity factor
Abstract

Two micromechanical models are used to calculate the statistical distributions of the stress intensity factor of a crack in a polycrystalline plate containing stiff grains and soft grain boundaries. The first is a finite-element method based Monte Carlo procedure where the microstructure is represented by a Poisson-Voronoi tessellation. The effective elastic moduli of the uncracked plate and the stress intensity factor of the cracked plate are calculated for selected values of the parameters that quantify the level of elastic mismatch between the grains and grain boundaries. It is shown that the stress intensity factor is independent of the expected number of grains, and that it can be estimated using an analytical model involving a long crack whose tip is contained within a circular inhomogeneity surrounded by an infinitely extended homogenized material. The stress intensity factor distributions of this auxiliary problem, obtained using the method of continuously distributed dislocations, are in excellent agreement with those corresponding to the polycrystalline microstructure, and are very sensitive to the position within the inhomogeneity of the crack tip. These results suggest that fracture toughness experiments on polycrystalline plates can be considered experiments on the single grain containing the crack tip, and in turn reflect the a/w effects typical of finite-geometry specimens.

Published
2008
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30. Higher-order macroscopic measures

Author

Gregory J. Rodin

Subjects
Polynomial, Mechanics of Materials, Simple (abstract algebra), Mechanical Engineering, Mathematical analysis, Boundary data, Constitutive equation, Order (group theory), Spherical harmonics, Boundary value problem, Condensed Matter Physics, Integral equation, Mathematics
Abstract

We present generalizations of Hill's classical results concerned with the macroscopic strain and stress measures. Generalizations involve polynomial boundary conditions and polynomial moments of the microscopic fields. It is shown that for higher-order polynomials certain boundary conditions and moments should be excluded from considerations in order to guarantee unique relationships between boundary data and macroscopic measures. Particularly simple relationships are obtained for spherical specimens, for which higher-order macroscopic measures are defined in terms of spherical harmonics. Also it is demonstrated that higher-order macroscopic measures and constitutive equations can be useful in multi-scale analysis of problems formulated in terms of integral equations.

Published
2007
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31. Isogeometric Analysis of Boundary Integral Equations

Author

Thomas J. R. Hughes, Matthias Taus, and Gregory J. Rodin

Subjects
Laplace transform, Simultaneous equations, Independent equation, Collocation method, Mathematical analysis, Nyström method, Isogeometric analysis, Integral equation, Fourier integral operator, Mathematics
Abstract

Isogeometric analysis is applied to boundary integral equations corresponding to boundary-value problems governed by Laplace's equation. It is shown that the smoothness of geometric parameterizations central to computer-aided design can be exploited for regularizing integral operators. As a result one obtains high-order collocation methods based on superior approximation and numerical integration schemes and well-conditioned systems of linear algebraic equations. It is demonstrated that the proposed approach allows one to solve boundary-value problems with an accuracy close to machine precision.

Published
2015
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33. Lattice Green’s Functions in Nonlinear Analysis of Defects

Author

Gregory J. Rodin, Sirajul Haq, and Alexander Movchan

Subjects
Mechanical Engineering, Mathematical analysis, Geometry, Mixed finite element method, Condensed Matter Physics, Boundary knot method, Finite element method, Nonlinear system, Mechanics of Materials, Vacancy defect, Boundary value problem, Boundary element method, Mathematics, Extended finite element method
Abstract

A method for analyzing problems involving defects in lattices is presented. Special attention is paid to problems in which the lattice containing the defect is infinite, and the response in a finite zone adjacent to the defect is nonlinear. It is shown that lattice Green’s functions allow one to reduce such problems to algebraic problems whose size is comparable to that of the nonlinear zone. The proposed method is similar to a hybrid finite-boundary element method in which the interior nonlinear region is treated with a finite element method and the exterior linear region is treated with a boundary element method. Method details are explained using an anti-plane deformation model problem involving a cylindrical vacancy.

Published
2006
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34. Analysis of Lattices with Non-linear Interphases

Author

Sirajul Haq, Alexander Movchan, and G. J. Rodin

Subjects
Quantitative Biology::Subcellular Processes, Nonlinear system, Materials science, Mechanical Engineering, Lattice (order), Mathematical analysis, Isotropy, Linear elasticity, Computational Mechanics, Interphase, Geometry, Instability
Abstract

Anti-plane deformation of square lattices containing interphases is analyzed. It is assumed that lattices are linear elastic but not necessarily isotropic, whereas interphases exhibit non-linear elastic behavior. It is demonstrated that such problems can be treated effectively using Green’s functions, which allow to eliminate the degrees of freedom outside of the interphase. Illustrative numerical examples focus on the determination of applied stresses leading to lattice instability.

Published
2006
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35. Periodic conduction problems: the fast multipole method and convergence of integral equations and lattice sums

Author

Gregory J. Rodin and James Overfelt

Subjects
General Mathematics, Fast multipole method, Lattice (order), Mathematical analysis, General Engineering, Fundamental solution, General Physics and Astronomy, Boundary value problem, Thermal conduction, Singular boundary method, Integral equation, Mathematics
Abstract

This paper presents a version of the fast multipole method (FMM) for integral equations describing conduction through three–dimensional periodic heterogeneous media. The proposed method is based on the standard rather than periodic fundamental solution, and therefore it is very close to the original FMM. In deriving the method, particular attention is paid to convergence of arising integral equations and lattice sums. It is shown that convergence can be achieved without introducing artificial compensatory sources or boundary conditions.

Published
2004
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36. Fast boundary element method for three-dimensional solids containing many cracks☆

Author

Gregory J. Rodin and Yi-Shao Lai

Subjects
Regularized meshless method, Applied Mathematics, Mathematical analysis, General Engineering, Mixed finite element method, Boundary knot method, Singular boundary method, Discrete element method, Computational Mathematics, Method of fundamental solutions, Boundary element method, Analysis, Mathematics, Extended finite element method
Abstract

We present a fast boundary element method for analyzing three-dimensional linearly elastic solids containing many cracks. The method is constructed in a modular fashion, by combining existing conventional boundary element method, iterative method, and fast summation method for the many-body electrostatics problems. The fast boundary element method preserves the advantageous features of the conventional boundary element method—weakly singular kernel, problem-specific approximations, and effective near-singular integration scheme. Numerical examples confirm the accuracy and efficiency of the new method for problems involving closely spaced cracks and large arrays of cracks imbedded in an infinite solid.

Published
2003
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37. Relationship between the Mechanical Properties and Topology of Cross-Linked Polymer Molecules: Parallel Strands Maximize the Strength of Model Polymers and Protein Domains

Author

Kilho Eom, Pai Chi Li, Dmitrii E. Makarov, and Gregory J. Rodin

Subjects
chemistry.chemical_classification, Materials science, Protein molecules, Protein domain, Nanotechnology, Polymer, Surfaces, Coatings and Films, chemistry, Chemical physics, Materials Chemistry, Molecule, Physical and Theoretical Chemistry, Elasticity (economics), Topology (chemistry)
Abstract

Proteins that perform mechanical functions in living organisms often exhibit exceptionally high strength and elasticity. Recent studies of the unfolding of single protein molecules under mechanical...

Published
2003
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38. [Untitled]

Author

Alexander Movchan, Yi-Shao Lai, and Gregory J. Rodin

Subjects
Asymptotic analysis, Singular perturbation, Numerical analysis, Mathematical analysis, Computational Mechanics, Rotational symmetry, Regular solution, Fracture mechanics, Geometry, Singularity, Mechanics of Materials, Modeling and Simulation, Boundary element method, Mathematics
Abstract

This work presents regular and singular asymptotic solutions for non-planar quasi-circular cracks. Regular asymptotic solutions, which do not give rise to hyper-singular stresses near the crack tip, are developed in the general three-dimensional setting. Singular asymptotic solutions are considered for axisymmetric problems only, because those problems do not involve hyper-singularity. The validity of asymptotic solutions for planar and non-planar cracks is investigated by comparing them with detailed numerical and analytical solutions. Also asymptotic solutions are applied to analysis of quasi-static crack growth in three dimensions.

Published
2002
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39. Suction effects in cratered surfaces

Author

Hyoyoung Jeong, Liu Wang, Shutao Qiao, Gregory J. Rodin, and Nanshu Lu

Subjects
Suction, Computer simulation, Airflow, Biomedical Engineering, Biophysics, Spherical cap, Bioengineering, 02 engineering and technology, Mechanics, Adhesion, Models, Theoretical, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Biochemistry, 0104 chemical sciences, Biomaterials, Surface tension, Impact crater, 0210 nano-technology, Material properties, Life Sciences–Engineering interface, Geology, Biotechnology
Abstract

It has been shown experimentally that cratered surfaces may have better adhesion properties than flat ones. However, the suction effect produced by the craters, which may be chiefly responsible for the improved adhesion, has not been properly modelled. This paper combines experimental, numerical simulation and analytical approaches towards developing a framework for quantifying the suction effect produced by isolated craters and cratered surfaces. The modelling approach emphasizes the essential role of large elastic deformation, while the airflow dynamics, microscopic mechanisms, like surface tension and air permeation, and rate-dependence are neglected. This approach is validated using experimental data for isolated hemi-spherical craters. The modelling approach is further applied to spherical cap (not necessarily hemi-spherical) craters with the objective of identifying optimal geometric and material properties, as well as the minimum preload necessary for attaining the maximum suction force. It is determined that stiff polymers with deep craters are capable of producing large suction forces. For soft materials, central to biomedical applications, large suction forces can be attained by reinforcing deep craters with thin stiff layers. Parametric optimization studies of reinforced craters reveal that some of them perform beyond common expectations. However, those high-performance reinforced craters are prone to surface instabilities, and therefore the practical use of such craters may be problematic.

Published
2017
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40. Force–velocity relationships for rigid bodies translating through unbounded shear-thinning power-law fluids

Author

Gregory J. Rodin and Matthew J. Whitney

Subjects
Physics::Fluid Dynamics, Stress (mechanics), Classical mechanics, Shear thinning, Flow (mathematics), Mechanics of Materials, Applied Mathematics, Mechanical Engineering, Mechanics, Power law, Force velocity, Mathematics
Abstract

The force–velocity relationships for rigid bodies translating through unbounded shear-thinning power-law fluids are analyzed. Numerical solutions are presented for the sphere, finite, and infinite circular cylinders. General properties of the force–velocity relationships and flow and stress patterns in highly non-linear fluids are discussed.

Published
2001
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41. Study of the process at LEP

Author

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M.G. Alviggi, G. Ambrosi, H. Anderhub, V.P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, A. Bajo, L. Baksay, A. Balandras, S.V. Baldew, S. Banerjee, Sw. Banerjee, A. Barczyk, R. Barillère, P. Bartalini, M. Basile, N. Batalova, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B.L. Betev, S. Bhattacharya, M. Biasini, M. Biglietti, A. Biland, J.J. Blaising, S.C. Blyth, G.J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J.G. Branson, F. Brochu, A. Buffini, A. Buijs, J.D. Burger, W.J. Burger, X.D. Cai, M. Capell, G. Cara Romeo, G. Carlino, A.M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y.H. Chang, U.K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G.M. Chen, H.F. Chen, H.S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, N. Colino, S. Costantini, F. Cotorobai, B. de la Cruz, A. Csilling, S. Cucciarelli, T.S. Dai, J.A. van Dalen, R. D'Alessandro, R. de Asmundis, P. Déglon, A. Degré, K. Deiters, D. della Volpe, E. Delmeire, P. Denes, F. DeNotaristefani, A. De Salvo, M. Diemoz, M. Dierckxsens, D. van Dierendonck, C. Dionisi, M. Dittmar, A. Dominguez, A. Doria, M.T. Dova, D. Duchesneau, D. Dufournaud, P. Duinker, H. El Mamouni, A. Engler, F.J. Eppling, F.C. Erné, A. Ewers, P. Extermann, M. Fabre, M.A. Falagan, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, T. Ferguson, H. Fesefeldt, E. Fiandrini, J.H. Field, F. Filthaut, P.H. Fisher, I. Fisk, G. Forconi, K. Freudenreich, C. Furetta, Yu. Galaktionov, S.N. Ganguli, P. Garcia-Abia, M. Gataullin, S.S. Gau, S. Gentile, N. Gheordanescu, S. Giagu, Z.F. Gong, G. Grenier, O. Grimm, M.W. Gruenewald, M. Guida, R. van Gulik, V.K. Gupta, A. Gurtu, L.J. Gutay, D. Haas, A. Hasan, D. Hatzifotiadou, T. Hebbeker, A. Hervé, P. Hidas, J. Hirschfelder, H. Hofer, G. Holzner, H. Hoorani, S.R. Hou, Y. Hu, I. Iashvili, B.N. Jin, L.W. Jones, P. de Jong, I. Josa-Mutuberrı́a, R.A. Khan, D. Käfer, M. Kaur, M.N. Kienzle-Focacci, D. Kim, J.K. Kim, J. Kirkby, D. Kiss, W. Kittel, A. Klimentov, A.C. König, M. Kopal, A. Kopp, V. Koutsenko, M. Kräber, R.W. Kraemer, W. Krenz, A. Krüger, A. Kunin, P. Ladron de Guevara, I. Laktineh, G. Landi, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, H.J. Lee, J.M. Le Goff, R. Leiste, P. Levtchenko, C. Li, S. Likhoded, C.H. Lin, W.T. Lin, F.L. Linde, L. Lista, Z.A. Liu, W. Lohmann, E. Longo, Y.S. Lu, K. Lübelsmeyer, C. Luci, D. Luckey, L. Lugnier, L. Luminari, W. Lustermann, W.G. Ma, M. Maity, L. Malgeri, A. Malinin, C. Maña, D. Mangeol, J. Mans, G. Marian, J.P. Martin, F. Marzano, K. Mazumdar, R.R. McNeil, S. Mele, L. Merola, M. Meschini, W.J. Metzger, M. von der Mey, A. Mihul, H. Milcent, G. Mirabelli, J. Mnich, G.B. Mohanty, T. Moulik, G.S. Muanza, A.J.M. Muijs, B. Musicar, M. Musy, M. Napolitano, F. Nessi-Tedaldi, H. Newman, T. Niessen, A. Nisati, H. Nowak, R. Ofierzynski, G. Organtini, A. Oulianov, C. Palomares, D. Pandoulas, S. Paoletti, P. Paolucci, R. Paramatti, H.K. Park, I.H. Park, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, M. Pedace, S. Pensotti, D. Perret-Gallix, B. Petersen, D. Piccolo, F. Pierella, M. Pieri, P.A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, H. Postema, J. Pothier, D.O. Prokofiev, D. Prokofiev, J. Quartieri, G. Rahal-Callot, M.A. Rahaman, P. Raics, N. Raja, R. Ramelli, P.G. Rancoita, R. Ranieri, A. Raspereza, G. Raven, P. Razis, D. Ren, M. Rescigno, S. Reucroft, S. Riemann, K. Riles, J. Rodin, B.P. Roe, L. Romero, A. Rosca, S. Rosier-Lees, S. Roth, C. Rosenbleck, B. Roux, J.A. Rubio, G. Ruggiero, H. Rykaczewski, S. Saremi, S. Sarkar, J. Salicio, E. Sanchez, M.P. Sanders, C. Schäfer, V. Schegelsky, S. Schmidt-Kaerst, D. Schmitz, H. Schopper, D.J. Schotanus, G. Schwering, C. Sciacca, A. Seganti, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, E. Shumilov, A. Shvorob, T. Siedenburg, D. Son, B. Smith, P. Spillantini, M. Steuer, D.P. Stickland, A. Stone, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L.Z. Sun, S. Sushkov, H. Suter, J.D. Swain, Z. Szillasi, T. Sztaricskai, X.W. Tang, L. Tauscher, L. Taylor, B. Tellili, D. Teyssier, C. Timmermans, Samuel C.C. Ting, S.M. Ting, S.C. Tonwar, J. Tóth, C. Tully, K.L. Tung, Y. Uchida, J. Ulbricht, E. Valente, G. Vesztergombi, I. Vetlitsky, D. Vicinanza, G. Viertel, S. Villa, M. Vivargent, S. Vlachos, I. Vodopianov, H. Vogel, H. Vogt, I. Vorobiev, A.A. Vorobyov, A. Vorvolakos, M. Wadhwa, W. Wallraff, M. Wang, X.L. Wang, Z.M. Wang, A. Weber, M. Weber, P. Wienemann, H. Wilkens, S.X. Wu, S. Wynhoff, L. Xia, Z.Z. Xu, J. Yamamoto, B.Z. Yang, C.G. Yang, H.J. Yang, M. Yang, J.B. Ye, S.C. Yeh, An. Zalite, Yu. Zalite, Z.P. Zhang, G.Y. Zhu, R.Y. Zhu, A. Zichichi, G. Zilizi, B. Zimmermann, and M. Zöller

Subjects
Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, Photon, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, Quartic function, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

The process e + e − → Z γγ→ q q γγ is studied in 0.5 fb−1 of data collected with the L3 detector at centre-of-mass energies between 130.1 GeV and 201.7 GeV. Cross sections are measured and found to be consistent with the Standard Model expectations. The study of the least energetic photon constrains the quartic gauge boson couplings to −0.008 GeV−2

Published
2001
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42. Search for excited leptons in e+e− interactions at –202 GeV

Author

Michele Guida, B. Smith, S. Braccini, J. G. Branson, W. J. Burger, Michael Dittmar, R. de Asmundis, I. Fisk, S. Villa, Davide Piccolo, S. N. Ganguli, Pàl Hidas, S. Bhattacharya, Xl Wang, A. Buijs, A. Degré, D. Kim, J. D. Swain, L. Z. Sun, A. Böhm, L. Bellucci, A. Rosca, B. Musicar, D. Prokofiev, Luisa Cifarelli, P. Lebrun, L. J. Gutay, An.A. Vorobyov, U. Becker, I. Duran, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, Francesca Cavallari, Jeremy Mans, A. C. Weber, Marcella Diemoz, F. J. Eppling, L. W. Jones, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, Riccardo Paramatti, Y. Uchida, S. M. Ting, A. Bay, Carlo Civinini, J. P. Martin, M. Acciarri, W. Kittel, G. Mirabelli, H.F. Chen, R. van Gulik, P. Extermann, Salvatore Mele, Christoph Schäfer, H. Hofer, A. Kunin, G. Raven, L. Xia, M. Aguilar-Benitez, O. Grimm, B. P. Roe, K. L. Tung, Herwig Schopper, K. Lübelsmeyer, G. Y. Zhu, E. Shumilov, Guo-Ming Chen, F. L. Linde, T. Angelescu, Minhong Wang, Hafeez R Hoorani, M. P. Sanders, B. L. Betev, Subir Sarkar, H. Postema, F. Brochu, V. K. Gupta, S. X. Wu, M. Kopal, E. Valente, Inkyu Park, M. Steuer, V. Shoutko, A. Buffini, R. Barillère, M. A. Rahaman, D. Perret-Gallix, D. della Volpe, Lamberto Luminari, Claudia Cecchi, Samuel C.C. Ting, G. Ruggiero, A. Chen, D. van Dierendonck, J. Salicio, M. W. Gruenewald, G. Ambrosi, I. Josa-Mutuberria, M. Kräber, M. Musy, J. Casaus, R. Berbeco, G. Forconi, M. Pohl, Z. A. Liu, A. Vorvolakos, Zhidong Zhang, W. J. Metzger, R. Leiste, Christoph Paus, Pierre Lecomte, L. Lugnier, G. Viertel, A. Arefiev, S. Sushkov, H. Milcent, A. Oulianov, Zhenghao Xu, C. Palomares, A. Lebedev, Dong-Chul Son, H. El Mamouni, A. Ewers, Z. Szillasi, Gianpaolo Carlino, F. DeNotaristefani, V. Koutsenko, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, C. G. Yang, J. Pothier, Yu. Zalite, S. V. Baldew, D. O. Prokofiev, R. R. McNeil, T. Paul, P. Wienemann, Georgi Sultanov, T. S. Dai, R. A. Khan, G. Holzner, K. Riles, F. Marzano, G. Coignet, W. Krenz, Jozsef Toth, Claudio Luci, D. Pandoulas, M. Rescigno, M. Pauluzzi, S. Saremi, D. Haas, Yu. Galaktionov, J. Alcaraz, J. J. Blaising, J. Hirschfelder, H.J. Lee, Stefano Giagu, A. M. Cartacci, Hans J. Vogel, W. T. Lin, Jasper Kirkby, M. A. Falagan, A. C. König, S. Vlachos, J.V. Allaby, S. Patricelli, D. Ren, E. Delmeire, U. K. Chaturvedi, Y. S. Lu, M. Fabre, B. Tellili, M. Zöller, Stefan Roth, Anna Katharina Kopp, Vladimir Andreev, D. Hatzifotiadou, T. Moulik, Laszlo Boldizsar, S. Costantini, A. Shvorob, J. Rodin, Egidio Longo, Igor Vorobiev, Mariagrazia Alviggi, P. Levtchenko, V. Plyaskin, D. Dufournaud, Ya Han Hu, T. Niessen, Mingming Yang, J. H. Field, A. Bajo, Panos A Razis, A. Mihul, M. Vivargent, G. Alemanni, C. Li, I. Vetlitsky, M. Chemarin, N. Cavallo, C. H. Lin, V. Pojidaev, F. C. Erné, B. Stoyanov, A. Balandras, J. M. Le Goff, J. Yamamoto, Bz Yang, A. Barczyk, Oleg Fedin, S. Schmidt-Kaerst, S. Pensotti, Valery Schegelsky, Antonino Zichichi, N. Gheordanescu, J. Berdugo, G. Grenier, S. C. Yeh, Adrian Biland, D. Kiss, D. P. Stickland, Y. H. Chang, Alexei Raspereza, M. T. Dova, G. M. Chen, J. A. van Dalen, E. J. Sanchez, Ren-Yuan Zhu, Manas Maity, K. Freudenreich, Peter H. Fisher, J. A. Rubio, A. Straessner, Luca Lista, M. Pedace, A. Krüger, Alessandra Doria, P. Berges, L. Romero, A. Gurtu, H. Rykaczewski, Giovanni Organtini, H. Wilkens, S. Reucroft, Max Weber, D. Käfer, Raffaello D'Alessandro, N. Batalova, S. Cucciarelli, C. Maña, Aleandro Nisati, Sabine Riemann, I. Vodopianov, A. Engler, A. Hasan, Peter Denes, Leonardo Merola, M. Capell, H. K. Park, L. Tauscher, H. S. Fesefeldt, E. Pistolesi, Joseph Quartieri, T. Azemoon, S. R. Hou, M. Wadhwa, D. J. Schotanus, Kajari Mazumdar, Roberto Battiston, M. Bourquin, P. Raics, X. D. Cai, Paolo Bagnaia, F. Pierella, Federico Cindolo, Marcos Cerrada, Aaron Dominguez, Gerjan Bobbink, G. Castellini, B. Borgia, F. Cesaroni, Jean Fay, P. Achard, Maurizio Biasini, J. Ulbricht, Felicitas Pauss, S. C. Tonwar, Frank Filthaut, S. Rosier-Lees, P. Le Coultre, Pierluigi Paolucci, Z. F. Gong, M. Basile, G. Chiefari, S. Shevchenko, G. Zilizi, Thomas Ferguson, F. Behner, Marta Felcini, S. C. Blyth, Marco Meschini, D. Mangeol, G. Cara Romeo, K. Sudhakar, Christopher George Tully, D. Luckey, G. Schwering, Wolfgang Lohmann, Francesca Nessi-Tedaldi, L. Baksay, F. Cotorobai, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, I. Clare, Giovanni Passaleva, J. D. Burger, T. Siedenburg, M. von der Mey, G. Rahal-Callot, N. Raja, G. Marian, Francesco Becattini, J. B. Ye, M. N. Kienzle-Focacci, A. Csilling, M. Lebeau, H. Suter, Ia Iashvili, H. J. Yang, R. Ofierzynski, C. Furetta, S. Likhoded, S. Wynhoff, C. Rosenbleck, W.G. Ma, T. Sztaricskai, J. K. Kim, Tariq Aziz, An. Zalite, J. Mnich, A. Favara, Zheng Wang, P. Ladron de Guevara, Crisostomo Sciacca, Marco Pieri, P. G. Rancoita, B. N. Jin, H. Nowak, D. Vicinanza, Dimitri Bourilkov, P. Spillantini, B. Petersen, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, A. De Salvo, P. Bartalini, W. Wallraff, A. Seganti, Harvey B Newman, S. Banerjee, B. Zimmermann, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, X. W. Tang, P. Duinker, G. Landi, P. A. Piroué, Simonetta Gentile, M. Chamizo, Simone Paoletti, A. Klimentov, A. J.M. Muijs, Sw. Banerjee, Manjit Kaur, R. Ranieri, B. De La Cruz, P. Déglon, Speranza Falciano, R. Ramelli, D.W. Schmitz, S. S. Gau, P. de Jong, N. Shivarov, M. Gataullin, Robert Clare, A. Stone, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, D. Duchesneau, H. S. Chen, L. Servoli, G.S. Muanza, and H. Anderhub

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, 7. Clean energy, 01 natural sciences, Pair production, Excited state, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract

Excited leptons are searched for using the L3 detector at LEP. The data collected at centre-of-mass energies in the range from 192 up to 202 GeV correspond to a total luminosity of 233 pb−1. No evidence of either pair production of excited leptons, nor of single production is found. From the searches for pair produced excited leptons, lower mass limits close to the kinematic limit are set. From the searches for singly produced excited leptons, upper limits on their couplings are derived in the mass range up to 200 GeV.

Published
2001
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43. Study of Z boson pair production in e+e− interactions at –202 GeV

Author

G. Mirabelli, H.F. Chen, K. Lübelsmeyer, A. Buffini, B. Zimmermann, F. Cesaroni, Konrad Deiters, W. J. Burger, Michael Dittmar, Y. Uchida, G. B. Mohanty, J. D. Swain, Alberto Aloisio, M.E. Sarakinos, A. Böhm, Zhenghao Xu, A. Lebedev, Dong-Chul Son, Dimitri Bourilkov, Minhong Wang, M. P. Sanders, B. L. Betev, G. Landi, V. Plyaskin, Lamberto Luminari, P. Spillantini, H. Anderhub, Pierre Lecomte, Werner Lustermann, M. Dierckxsens, J. Hirschfelder, Stefano Giagu, A. Malinin, B. Petersen, G. Ambrosi, Raffaello D'Alessandro, R. Leiste, Christoph Paus, F. C. Erné, M. Rescigno, L. Baksay, F. Cotorobai, X. W. Tang, H. K. Park, Mariagrazia Alviggi, P. A. Piroué, Leonardo Merola, P. Wienemann, G. Castellini, M. Chamizo, Alexei Raspereza, M. T. Dova, Georgi Sultanov, Simone Paoletti, E. Fiandrini, Gyorgy Vesztergombi, A. De Salvo, S. X. Wu, T. S. Dai, B. Musicar, Michele Guida, B. Smith, S. Braccini, A. J.M. Muijs, P. Bartalini, T. Angelescu, M. Kopal, Z. F. Gong, G. Forconi, M. Pohl, R. A. Khan, L. Tauscher, Jozsef Toth, A. Seganti, Harvey B Newman, Inkyu Park, J. Casaus, W.G. Ma, Tariq Aziz, M. Della Pietra, T. Sztaricskai, T. Azemoon, L. Malgeri, M. Steuer, K. Freudenreich, Z. A. Liu, A. Vorvolakos, Sw. Banerjee, Manjit Kaur, R. de Asmundis, I. Fisk, Claudio Luci, D. Pandoulas, E. Delmeire, S. S. Gau, D. Kim, U. K. Chaturvedi, M. Vivargent, Marcos Cerrada, An. Zalite, C. G. Yang, M. Chemarin, N. Cavallo, R. Barillère, S. Saremi, J. Pothier, Yu. Zalite, G. M. Chen, W. Kittel, M. A. Rahaman, D. Perret-Gallix, Francesco Conventi, B. P. Roe, S. Cucciarelli, Zhidong Zhang, C. Maña, Y. S. Lu, A. Oulianov, L. Lugnier, Marcella Diemoz, G. Grenier, H. El Mamouni, Roberto Battiston, Yu. Galaktionov, A. Arefiev, Crisostomo Sciacca, J.V. Allaby, Subir Sarkar, Marco Pieri, J. Alcaraz, S. V. Baldew, R. R. McNeil, S. Patricelli, J. A. van Dalen, Gerjan Bobbink, G. Schwering, Maurizio Biasini, D. O. Prokofiev, J. M. Le Goff, J. Yamamoto, B. Borgia, A. Shvorob, S. Reucroft, Jasper Kirkby, M. A. Falagan, M. Gataullin, J. Ulbricht, N. Gheordanescu, Marta Felcini, F. Brochu, D. della Volpe, Aleandro Nisati, B. Tellili, P. G. Rancoita, M. Zöller, Joseph Quartieri, Anna Katharina Kopp, E. Valente, B. N. Jin, Bz Yang, Oleg Fedin, J. A. Rubio, H. Nowak, D. Vicinanza, Max Weber, An.A. Vorobyov, Egidio Longo, S. Vlachos, G. Holzner, K. Riles, Francesco Becattini, D. Hatzifotiadou, Laszlo Boldizsar, M. Fabre, J. Rodin, G. Cara Romeo, J. H. Field, A. Mihul, O. Adriani, G. Alemanni, A. Stone, Mingming Yang, T. Niessen, Imad Baptiste Laktineh, Lucas Taylor, C. Li, I. Clare, F. Marzano, G. Coignet, W. Krenz, Aaron Dominguez, Felicitas Pauss, W. Wallraff, G. Viertel, S. Banerjee, S. C. Yeh, B. Stoyanov, Kajari Mazumdar, S. Schmidt-Kaerst, X. D. Cai, H. J. Yang, Hans J. Vogel, R. Ofierzynski, Samuel C.C. Ting, P. Le Coultre, G. Chiefari, M. Basile, S. Shevchenko, W. T. Lin, F. Behner, R. Ramelli, Ren-Yuan Zhu, D. Mangeol, M. N. Kienzle-Focacci, P. Duinker, K. Sudhakar, S. Likhoded, S. Costantini, Alessandra Doria, D. Luckey, Simonetta Gentile, M. W. Gruenewald, D.W. Schmitz, R. van Gulik, M. Pedace, S. Wynhoff, C. J.W.P. Timmermans, A. Csilling, M. von der Mey, I. Josa-Mutuberria, M. Kräber, P. Extermann, P. de Jong, N. Shivarov, Salvatore Mele, M. Musy, T. Paul, V. K. Gupta, A. Klimentov, M. Lebeau, Christoph Schäfer, H. Hofer, J. B. Ye, Robert Clare, A. Gurtu, L. J. Gutay, D. Kiss, K. L. Tung, R. Berbeco, Thomas Hebbeker, U. Becker, Gianpaolo Carlino, F. DeNotaristefani, Paul Lecoq, R. W. Kraemer, M. Napolitano, J. G. Branson, S. Villa, I. Duran, R. Ranieri, D. Duchesneau, H. S. Chen, A. Hasan, Ya Han Hu, Manas Maity, P. Raics, L. Servoli, G.S. Muanza, Davide Piccolo, H. Vogt, B. De La Cruz, P. Berges, S. N. Ganguli, F. J. Eppling, L. W. Jones, P. Lebrun, M. Pauluzzi, P. H. Fisher, A. Degré, Jeremy Mans, G. Zilizi, J. J. Blaising, H.J. Lee, S. M. Ting, P. Déglon, Speranza Falciano, M. Acciarri, Guo-Ming Chen, A. Bajo, D. Ren, A. M. Cartacci, A. C. König, F. L. Linde, Pàl Hidas, S. Bhattacharya, Xl Wang, G. Ruggiero, A. Chen, D. van Dierendonck, J. Salicio, I. Vetlitsky, A. Krüger, D. Dufournaud, A. Barczyk, C. H. Lin, V. Pojidaev, Adrian Biland, L. Z. Sun, C. Furetta, A. Straessner, Luca Lista, Igor Vorobiev, P. Levtchenko, Z. Szillasi, C. Palomares, Panos A Razis, Sabine Riemann, D. Prokofiev, Luisa Cifarelli, V. Koutsenko, I. Vodopianov, A. Engler, M. Capell, A. Favara, Zheng Wang, H. S. Fesefeldt, E. Pistolesi, A. Balandras, J. Berdugo, L. Bellucci, A. Rosca, E. J. Sanchez, Francesca Cavallari, Pierluigi Paolucci, J. P. Martin, P. Ladron de Guevara, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, J. K. Kim, C. Dionisi, Giovanni Passaleva, Pablo Garcia-Abia, Alain Hervé, A. Bay, Carlo Civinini, G. Raven, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, H. Postema, A. Buijs, L. Romero, F. Pierella, Federico Cindolo, Riccardo Paramatti, M. Bourquin, A. Kunin, Joachim Mnich, Hafeez R Hoorani, P. Achard, S. C. Tonwar, W. J. Metzger, S. R. Hou, Frank Filthaut, Francesca Nessi-Tedaldi, M. Wadhwa, D. J. Schotanus, J. D. Burger, Thomas Ferguson, T. Siedenburg, G. Rahal-Callot, N. Raja, G. Marian, D. Haas, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. Suter, Ia Iashvili, H. Rykaczewski, Giovanni Organtini, Vladimir Andreev, H. Milcent, H. Wilkens, S. Rosier-Lees, Jean Fay, T. Moulik, D. P. Stickland, Y. H. Chang, Peter Denes, Paolo Bagnaia, S. C. Blyth, Marco Meschini, Christopher George Tully, Wolfgang Lohmann, B. Bertucci, F. Anselmo, Nicanor Colino, and A. C. Weber

Subjects
Physics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, Cross section (physics), Pair production, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

The cross section for the production of Z boson pairs is measured using the data collected by the L3 detector at LEP in 1999 in e^+e^- collisions at centre-of-mass energies ranging from 192 GeV up to 202 GeV. Events in all the visible final states are selected, measuring the cross section of this process. The special case of final states containing b quarks is also investigated. All results are in agreement with the Standard Model predictions.

Published
2001
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44. Higgs candidates in e+e− interactions at GeV

Author

E. Valente, S. X. Wu, B. De La Cruz, M. Kopal, A. Favara, Inkyu Park, Zheng Wang, Zhenyu Zhang, M. Steuer, P. Déglon, A. Rosca, Hans J. Vogel, E. Delmeire, U. K. Chaturvedi, Y. S. Lu, M. N. Kienzle-Focacci, Alessandra Doria, M. A. Rahaman, D. Perret-Gallix, L. Romero, C-Q. Li, E. Fiandrini, S. Costantini, A. Shvorob, R. Ranieri, A. Csilling, V. K. Gupta, S. Sarkar, Roberto Battiston, M. Bourquin, L. J. Gutay, U. Becker, H. Anderhub, Gerjan Bobbink, P. Ladron de Guevara, F. DeNotaristefani, A. Lebedev, Dong-Chul Son, P. Achard, J. Allaby, J. J. Blaising, J. Hirschfelder, Stefano Giagu, J. H. Field, B. Borgia, I. Duran, T. Angelescu, Mariagrazia Alviggi, B. Musicar, A. Barczyk, J. Ulbricht, Adrian Biland, I. Vodopianov, A. Engler, M. Capell, B. Stoyanov, H. S. Fesefeldt, E. Pistolesi, Michele Guida, A. Oulianov, C. Palomares, V. Plyaskin, F. J. Eppling, L. W. Jones, J. Casaus, I. Vetlitsky, S. M. Ting, Speranza Falciano, A. Zichichi, S. Schmidt-Kaerst, Samuel C.C. Ting, M. Lebeau, B. Tellili, B. Smith, A. Straessner, Ya Han Hu, M. Wadhwa, H. Milcent, Ren-Yuan Zhu, D. J. Schotanus, N. Batalova, Luca Lista, J. K. Kim, Z. Szillasi, M. Vivargent, H. J. Lee, Marcella Diemoz, D. Piccolo, Manas Maity, S. Braccini, T. Moulik, S. S. Gau, L. Cifarelli, M. Pedace, Alexei Raspereza, M. T. Dova, G. Passaleva, M. W. Gruenewald, I. Clare, Tariq Aziz, I. Josa-Mutuberria, M. Kräber, C. G. Yang, J. Pothier, V. Koutsenko, P. Berges, J. Mnich, R. van Gulik, G. Ambrosi, P. Extermann, Nicola Cavallo, A. Gurtu, Salvatore Mele, P. Lecomte, Yu. Zalite, Christoph Schäfer, B. Z. Yang, D. P. Stickland, Y. H. Chang, R. Berbeco, H. K. Park, J. Tóth, Willis Lin, Sabine Riemann, H. Hofer, K. L. Tung, M. Gataullin, Maurizio Biasini, Marta Felcini, G. Castellini, A. Stone, A. Krüger, Francesca Nessi-Tedaldi, R. de Asmundis, I. Fisk, Peter Raics, A. Arefiev, G. Forconi, J. D. Burger, T. Siedenburg, M. Pohl, R. Leiste, H. F. Chen, Francesco Becattini, A. Hasan, G. Rahal-Callot, N. Raja, Christoph Paus, R. R. McNeil, G. Carlino, Z. F. Gong, Yu. Galaktionov, Kajari Mazumdar, A. Bajo, X. D. Cai, Y. Uchida, P. Wienemann, Georgi Sultanov, R. Barillère, Dong-Hyun Kim, P. Duinker, H. Suter, Ia Iashvili, Egidio Longo, G. Holzner, Crisostomo Sciacca, G. Schwering, S. W. Banerjee, S. Vlachos, Marco Pieri, D. Prokofiev, K. Riles, G. Zilizi, Claudio Luci, D. Pandoulas, H. J. Yang, R. Ofierzynski, J. G. Branson, T. S. Dai, P. Lebrun, A. Klimentov, R. A. Khan, W. Kittel, F. Marzano, G. Coignet, W. Krenz, J. Alcaraz, S. Villa, J. Rodin, S. Likhoded, S. Wynhoff, M. Pauluzzi, Despina Hatzifotiadou, C. Furetta, Jeremy Mans, Valery Schegelsky, H. Rykaczewski, Giovanni Organtini, Pierluigi Paolucci, G. Chiefari, S. Shevchenko, F. Behner, S. N. Ganguli, P. G. Rancoita, B. N. Jin, H. Nowak, A. Degré, Minhong Wang, M. P. Sanders, B. L. Betev, L. Lugnier, C. Rosenbleck, M. Acciarri, Guo-Ming Chen, Z. A. Liu, A. Vorvolakos, F. L. Linde, J.M. LeGoff, H. Wilkens, S. Saremi, A. M. Cartacci, A. C. König, Stefan Roth, An.A. Vorobyov, D. Vicinanza, G. Grenier, S. V. Baldew, D. O. Prokofiev, T. Sztaricskai, S. Patricelli, A. Ewers, T. Niessen, F. C. Erné, G. Marian, D. van Dierendonck, O. Adriani, M. Chemarin, Laszlo Boldizsar, J. Salicio, Imad Baptiste Laktineh, Lucas Taylor, G. M. Chen, Jean Fay, An. Zalite, M. Fabre, M. Rescigno, W. Wallraff, K. Freudenreich, D. Dufournaud, J. Yamamoto, N. Gheordanescu, Z. Z. Xu, S. Banerjee, S. Reucroft, A. Mihul, C. H. Lin, Jasper Kirkby, M. A. Falagan, G. Alemanni, M. Zöller, Aaron Dominguez, Igor Vorobiev, V. Pojidaev, J. A. Rubio, P. Levtchenko, Anna Katharina Kopp, Riccardo Paramatti, Lamberto Luminari, S. R. Hou, B. Zimmermann, Mingming Yang, Felicitas Pauss, G. Cara Romeo, B. P. Roe, A. Kunin, F. Cesaroni, D. Käfer, Panos A Razis, H. El Mamouni, S. C. Yeh, Hafeez R Hoorani, S. Sushkov, Konrad Deiters, F. Brochu, D. della Volpe, G. B. Mohanty, Alberto Aloisio, S. Rosier-Lees, G. Landi, Dimitri Bourilkov, W. J. Metzger, P. Le Coultre, M. Basile, Oleg Fedin, Max Weber, D. Haas, X. W. Tang, Simonetta Gentile, P. A. Piroué, Raffaello D'Alessandro, A. Balandras, G. Viertel, L. Baksay, F. Cotorobai, M. Chamizo, J. Berdugo, P. Spillantini, D. Mangeol, Leonardo Merola, S. Cucciarelli, E. J. Sanchez, L. Tauscher, C. Maña, T. Azemoon, B. Petersen, K. Sudhakar, D. Luckey, T. Paul, Marcos Cerrada, M. von der Mey, A. Buijs, J. B. Ye, D. Kiss, Gyorgy Vesztergombi, X. L. Wang, Luca Malgeri, Peter H. Fisher, F. Cindolo, A. Chen, J. A. van Dalen, Aleandro Nisati, A. De Salvo, Simone Paoletti, Joseph Quartieri, P. Bartalini, A. J.M. Muijs, Manjit Kaur, D. Ren, A. Seganti, Harvey B Newman, M. Musy, Francesca Cavallari, R. Ramelli, D.W. Schmitz, J. P. Martin, P. de Jong, N. Shivarov, Robert Clare, G. Y. Zhu, E. Shumilov, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, V. Shoutko, D. Duchesneau, H. S. Chen, L. Servoli, Claudia Cecchi, G.S. Muanza, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, W. J. Burger, Michael Dittmar, S. Pensotti, Vladimir Andreev, J. D. Swain, Peter Denes, A. Böhm, G. Ruggiero, A. C. Weber, Pàl Hidas, S. Bhattacharya, L. Z. Sun, G. Mirabelli, L. Bellucci, K. Lübelsmeyer, A. Buffini, C. Dionisi, Paolo Bagnaia, S. C. Blyth, Marco Meschini, Pablo Garcia-Abia, Alain Hervé, Christopher George Tully, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, A. Bay, F. Pierella, S. C. Tonwar, Frank Filthaut, Thomas Ferguson, Carlo Civinini, G. Raven, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, and H. Postema

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics
Abstract

In a search for the Standard Model Higgs boson, carried out on 212.5~$\mathrm{pb^{-1}}$ of data collected by the L3 detector at the highest LEP centre-of-mass energies, including 116.5~$\mathrm{pb^{-1}}$ above $\sqrt{s} = 206$~GeV, an excess of candidates for the process $e^+ e^- \rightarrow Z^{*}\rightarrow HZ$ is found for Higgs masses near 114.5~GeV. We present an analysis of our data and the characteristics of our strongest candidates.

Published
2000
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45. Measurement of Bose–Einstein correlations in e+e−→W+W− at GeV

Author

A. Barczyk, Adrian Biland, M. Vivargent, D. Piccolo, Yu. Galaktionov, Marco Pieri, H. El Mamouni, Pierluigi Paolucci, J. Alcaraz, Tariq Aziz, I. Vodopianov, A. Engler, G. Marian, X. L. Wang, R. Leiste, Christoph Paus, M. Capell, M. Pauluzzi, Giovanni Passaleva, E. Valente, Vladimir Andreev, Peter Denes, A. Mihul, G. Alemanni, Paolo Bagnaia, Oleg Fedin, H. S. Fesefeldt, Y. Uchida, E. Pistolesi, M. N. Kienzle-Focacci, S. S. Gau, F. C. Erné, D. Ren, G. Viertel, W. J. Burger, S. C. Yeh, Max Weber, Crisostomo Sciacca, Egidio Longo, A. Csilling, Pàl Hidas, S. Bhattacharya, G. Landi, G. Ambrosi, K. Freudenreich, Michael Dittmar, V. Plyaskin, Minhong Wang, M. P. Sanders, B. L. Betev, M. Gataullin, Hans J. Vogel, Simone Paoletti, A. Stone, M. Lebeau, Dimitri Bourilkov, Z. A. Liu, A. Vorvolakos, G. Forconi, M. Pohl, L. Z. Sun, S. Costantini, A. M. Cartacci, W. Kittel, H. Anderhub, A. J.M. Muijs, J. D. Swain, Raffaello D'Alessandro, Maurizio Biasini, Marta Felcini, Manjit Kaur, Francesca Cavallari, Alexei Raspereza, M. T. Dova, P. Wienemann, Georgi Sultanov, A. C. König, A. Lebedev, P. Spillantini, Dong-Chul Son, Ren-Yuan Zhu, B. Musicar, B. Petersen, Samuel C.C. Ting, Roberto Battiston, S. Cucciarelli, E. Fiandrini, M. Campanelli, T. S. Dai, Gyorgy Vesztergombi, Gerjan Bobbink, Francesca Nessi-Tedaldi, Jozsef Toth, Michele Guida, R. A. Khan, Claudio Luci, B. Borgia, B. Smith, P. Duinker, Leonardo Merola, S. Saremi, M. Pedace, D. Pandoulas, Luca Malgeri, L. Tauscher, J. J. Blaising, Francesco Becattini, J. Hirschfelder, Stefano Giagu, J. P. Martin, D. Dufournaud, C. Maña, J. D. Burger, T. Siedenburg, M. Fabre, P. G. Rancoita, P. Violini, A. Böhm, J. Ulbricht, A. Klimentov, S. Braccini, T. Azemoon, Mingming Yang, L. Bellucci, A. Krüger, G. Grenier, C. H. Lin, G. Rahal-Callot, N. Raja, V. Pojidaev, A. Gurtu, H. F. Chen, A. De Salvo, Marcos Cerrada, G. Ruggiero, A. C. Weber, R. van Gulik, S. Reucroft, H. J. Lee, Marcella Diemoz, L. Cifarelli, J. G. Branson, S. Villa, H. J. Yang, C. Dionisi, M. W. Gruenewald, Pablo Garcia-Abia, Speranza Falciano, I. Josa-Mutuberria, M. Kräber, P. Bartalini, A. Seganti, G. Y. Zhu, E. Shumilov, P. Extermann, V. Shoutko, Claudia Cecchi, Harvey B Newman, M. Musy, B. Tellili, I. Clare, G. Mirabelli, R. de Asmundis, I. Fisk, H. Suter, Alain Hervé, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, R. Ofierzynski, K. L. Tung, M. Chemarin, G. M. Chen, Aaron Dominguez, R. Barillère, I. Vetlitsky, Felicitas Pauss, Ia Iashvili, Nicola Cavallo, A. Straessner, Luca Lista, A. Hasan, B. N. Jin, H. Nowak, D. Vicinanza, Igor Vorobiev, S. Likhoded, H. K. Park, W. Wallraff, T. Paul, P. Levtchenko, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, K. Lübelsmeyer, An.A. Vorobyov, S. N. Ganguli, S. Wynhoff, C-Q. Li, R. Ramelli, D.W. Schmitz, P. de Jong, N. Shivarov, Robert Clare, A. Bay, S. Rosier-Lees, Panos A Razis, G. Castellini, P. Le Coultre, S. Banerjee, Willis Lin, Sabine Riemann, Z. F. Gong, W. G. Ma, R. Berbeco, V. K. Gupta, J. A. Rubio, Carlo Civinini, H. Milcent, S. W. Banerjee, M. Basile, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, A. Buffini, S. V. Baldew, D. O. Prokofiev, M. Napolitano, G. Chiefari, O. Adriani, B. Zimmermann, P. Lebrun, A. Degré, A. Oulianov, C. Palomares, S. Shevchenko, S. Vlachos, G. Raven, Imad Baptiste Laktineh, Jeremy Mans, Lamberto Luminari, F. DeNotaristefani, Lucas Taylor, M. G. Alviggi, Konrad Deiters, D. Mangeol, Simonetta Gentile, G. B. Mohanty, K. Sudhakar, A. Balandras, L. Xia, D. Duchesneau, H. S. Chen, Jasper Kirkby, M. A. Falagan, J. Berdugo, T. Moulik, L. Servoli, M. Aguilar-Benitez, O. Grimm, D. Luckey, M. Acciarri, M. Zöller, M. von der Mey, F. Behner, Alberto Aloisio, T. Angelescu, Herwig Schopper, J. B. Ye, E. J. Sanchez, Guo-Ming Chen, Anna Katharina Kopp, J. Rodin, T. Niessen, Pierre Lecomte, D. Kiss, J. Casaus, Dong-Hyun Kim, A. Chen, D. van Dierendonck, D. P. Stickland, Y. H. Chang, Peter H. Fisher, J. Salicio, Zichen Xu, G. Zilizi, Werner Lustermann, Charles Timmermans, M. Dierckxsens, Peter Raics, H. Postema, X. W. Tang, S. X. Wu, Ya Han Hu, A. Malinin, P. A. Piroué, M. Chamizo, C. G. Yang, M. Rescigno, J. Pothier, Yu. Zalite, Manas Maity, E. Delmeire, U. K. Chaturvedi, Kajari Mazumdar, X. D. Cai, L. Romero, Y. S. Lu, Aleandro Nisati, S. Sarkar, Joseph Quartieri, A. Shvorob, Inkyu Park, G. Cara Romeo, B. P. Roe, M. Steuer, J. H. Field, M. Bourquin, F. Cesaroni, P. Berges, B. Stoyanov, S. Schmidt-Kaerst, M. A. Rahaman, D. Perret-Gallix, A. Arefiev, R. R. McNeil, G. Carlino, L. Baksay, F. Cotorobai, F. Brochu, D. Prokofiev, G. Holzner, D. della Volpe, K. Riles, F. Marzano, G. Coignet, W. Krenz, L. J. Gutay, J. A. van Dalen, U. Becker, Z. Szillasi, V. Koutsenko, I. Duran, T. Sztaricskai, Alessandra Doria, F. J. Eppling, L. W. Jones, S. M. Ting, An. Zalite, S. R. Hou, J.V. Allaby, S. Patricelli, D. Hatzifotiadou, Laszlo Boldizsar, M. Wadhwa, D. J. Schotanus, S. C. Blyth, Marco Meschini, Christopher George Tully, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, F. Pierella, Federico Cindolo, S. C. Tonwar, Frank Filthaut, Thomas Ferguson, B. De La Cruz, P. Déglon, A. Bajo, G. Schwering, Joachim Mnich, C. Furetta, P. Achard, L. Lugnier, J. K. Kim, A. Buijs, A. Favara, Zheng Wang, Zhenyu Zhang, A. Rosca, M. E. Sarakinos, P. Ladron de Guevara, Riccardo Paramatti, A. Kunin, Hafeez R Hoorani, W. J. Metzger, D. Haas, F. L. Linde, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. Rykaczewski, Giovanni Organtini, H. Wilkens, G. S. Muanza, and Jean Fay

Subjects
Condensed Matter::Quantum Gases, Physics, Nuclear and High Energy Physics, Condensed Matter::Other, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, Bose–Einstein correlations, 01 natural sciences, Nuclear physics, Quantum mechanics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

We investigate Bose-Einstein correlations (BEC) in W-pair production at √s ≃ 189 GeV using the L3 detector at LEP. We observe BEC between particles from a single W decay in good agreement with those from a light-quark Z decay sample. We investigate their possible existence between particles coming from different W's. No evidence for such inter-W BEC is found. (C) 2000 Elsevier Science B.V.

Published
2000
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46. Production of single W bosons at GeV and measurement of WWγ gauge couplings

Author

H. Milcent, A. M. Cartacci, Vladimir Andreev, Yu. Galaktionov, D. Ruschmeier, J. Alcaraz, A. C. König, Crisostomo Sciacca, T. Moulik, D. Dufournaud, Roberto Battiston, Gerjan Bobbink, B. Borgia, J. Ulbricht, B. De La Cruz, B. Tellili, I. Clare, E. Valente, L. J. Gutay, U. Becker, A. Mihul, G. Alemanni, Z. Z. Xu, C. H. Lin, T. Angelescu, D. P. Stickland, Y. H. Chang, V. Pojidaev, Peter Denes, Maurizio Biasini, Marta Felcini, G. Viertel, Paolo Bagnaia, S. C. Yeh, I. Duran, J. Casaus, A. Barczyk, Konrad Deiters, G. B. Mohanty, Adrian Biland, F. Pierella, P. Déglon, Francesco Becattini, A. Buijs, Hans J. Vogel, F. J. Eppling, L. W. Jones, Federico Cindolo, A. Bajo, F. Ferroni, Alberto Aloisio, C. G. Yang, L. Romero, J. Pothier, Yu. Zalite, S. Costantini, G. Forconi, Raffaello D'Alessandro, H. Anderhub, M. Pohl, Ph. Lebrun, Speranza Falciano, S. M. Ting, A. Straessner, S. Sarkar, Luca Lista, Jozsef Toth, Marco Pieri, Leonardo Merola, G. Schwering, H. J. Yang, M. Bourquin, B. Musicar, X. W. Tang, S. C. Tonwar, L. Tauscher, I. Vodopianov, A. Engler, M. Lebeau, Frank Filthaut, Claudio Luci, D. Pandoulas, M. Campanelli, Pierluigi Paolucci, P. Duinker, P. A. Piroué, S. Likhoded, Joachim Mnich, Willis Lin, Sabine Riemann, M. Chamizo, S. Wynhoff, T. Azemoon, C. Furetta, J. Allaby, M. Capell, P. Achard, G. Cara Romeo, B. P. Roe, A. Arefiev, Michele Guida, A. Klimentov, P. G. Rancoita, A. Robohm, H. S. Fesefeldt, H. J. Lee, Marcella Diemoz, Thomas Ferguson, Ren-Yuan Zhu, L. Lugnier, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Luciano Barone, E. Pistolesi, G. Marian, G. Grenier, L. Cifarelli, Marcos Cerrada, R. Ramelli, F. C. Erné, B. N. Jin, H. Nowak, B. Smith, Y. Uchida, D. Vicinanza, A. Oulianov, H. Rykaczewski, Giovanni Organtini, T. Sztaricskai, D.W. Schmitz, Francesca Nessi-Tedaldi, R. R. McNeil, Giovanni Passaleva, C. Palomares, S. Reucroft, F. Brochu, D. della Volpe, M. Pedace, H. Wilkens, G. Carlino, P. de Jong, N. Shivarov, J. D. Burger, Minhong Wang, M. P. Sanders, B. L. Betev, K. Freudenreich, S. Braccini, T. Siedenburg, Robert Clare, An. Zalite, J. K. Kim, G. Rahal-Callot, N. Raja, P. Marchesini, W. G. Ma, S. S. Gau, A. Gurtu, C-Q. Li, A. Lebedev, Dong-Chul Son, V. K. Gupta, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. N. Kienzle-Focacci, W. Wallraff, D. Prokofiev, S. Cucciarelli, S. C. Blyth, V. Brigljevic, Marco Meschini, M. Napolitano, C. Maña, J. J. Blaising, J. Hirschfelder, Stefano Giagu, M. Gataullin, Peter H. Fisher, H. Suter, Ia Iashvili, F. DeNotaristefani, W. J. Burger, R. de Asmundis, I. Fisk, A. Csilling, A. Stone, J. G. Branson, S. Banerjee, Ya Han Hu, D. Duchesneau, H. S. Chen, S. Villa, L. Servoli, Pàl Hidas, S. Bhattacharya, A. Hasan, Mariagrazia Alviggi, T. Paul, G. Holzner, Manas Maity, P. Berges, K. Sudhakar, S. Patricelli, S. W. Banerjee, Dong-Hyun Kim, Christopher George Tully, K. Riles, S. N. Ganguli, S. Vlachos, I. Vetlitsky, L. Z. Sun, D. Hatzifotiadou, Laszlo Boldizsar, M. von der Mey, G. Zilizi, A. Favara, A. Degré, J. B. Ye, Zheng Wang, F. Marzano, G. Coignet, R. van Gulik, J. Rodin, T. Niessen, P. Extermann, W. Krenz, H. El Mamouni, Jeremy Mans, F. Di Lodovico, Zhenyu Zhang, L. Bellucci, Samuel C.C. Ting, A. Rosca, Wolfgang Lohmann, H. Vogt, B. Bertucci, M. Acciarri, Guo-Ming Chen, F. L. Linde, M. E. Sarakinos, J.P. Martin, Nicola Cavallo, C. Dionisi, Oleg Fedin, Pablo Garcia-Abia, Alain Hervé, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, A. Chen, D. van Dierendonck, J. Salicio, P. Ladron de Guevara, K. L. Tung, Max Weber, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, A. Bay, Carlo Civinini, G. Raven, R. Berbeco, L. Xia, Peter Raics, H. K. Park, E. Delmeire, U. K. Chaturvedi, M. Aguilar-Benitez, G. Landi, F. Anselmo, Nicanor Colino, Y. S. Lu, O. Grimm, Herwig Schopper, A. Shvorob, Z. Szillasi, S. X. Wu, Simone Paoletti, Inkyu Park, J. H. Field, H. Postema, A. J.M. Muijs, G. Castellini, M. Steuer, B. Stoyanov, V. Koutsenko, Manjit Kaur, Michael Dittmar, S. Schmidt-Kaerst, M. A. Rahaman, D. Perret-Gallix, Egidio Longo, Kajari Mazumdar, Z. F. Gong, X. D. Cai, Aleandro Nisati, W. Kittel, F. Cesaroni, Joseph Quartieri, M. Fabre, Emilio Leonardi, Mingming Yang, D. Sciarrino, L. Baksay, F. Cotorobai, Z. A. Liu, A. Vorvolakos, J. D. Swain, S. Saremi, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, J. A. Rubio, Aaron Dominguez, Felicitas Pauss, A. Böhm, S. Rosier-Lees, P. Le Coultre, M. Basile, G. Ruggiero, Alessandra Doria, A. C. Weber, S. R. Hou, M. Wadhwa, D. J. Schotanus, Kati Lassila-Perini, V. Plyaskin, Alexei Raspereza, M. T. Dova, A. Krüger, D. Mangeol, R. Barillère, M. Rescigno, S. V. Baldew, D. O. Prokofiev, D. Luckey, Jasper Kirkby, M. A. Falagan, M. Zöller, Anna Katharina Kopp, G. Mirabelli, D. Kiss, J. A. van Dalen, G. Ambrosi, P. Molnar, K. Lübelsmeyer, H. F. Chen, P. Wienemann, Georgi Sultanov, T. S. Dai, R. A. Khan, R. Leiste, Christoph Paus, G. Chiefari, S. Shevchenko, A. Buffini, F. Behner, M. Chemarin, Lamberto Luminari, G. M. Chen, Pierre Lecomte, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, Dimitri Bourilkov, P. Spillantini, B. Petersen, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, P. Violini, A. De Salvo, P. Bartalini, A. Seganti, Harvey B Newman, M. Musy, M. Vivargent, D. Piccolo, An.A. Vorobyov, O. Adriani, G. S. Muanza, Imad Baptiste Laktineh, Lucas Taylor, Jean Fay, Igor Vorobiev, P. Levtchenko, Riccardo Paramatti, Panos A Razis, A. Kunin, Hafeez R Hoorani, Simonetta Gentile, W. J. Metzger, A. Balandras, J. Berdugo, E. J. Sanchez, D. Haas, R. Faccini, X. L. Wang, M. Pauluzzi, D. Ren, Francesca Cavallari, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, and Tariq Aziz

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Lambda, 01 natural sciences, 7. Clean energy, Standard Model, Luminosity, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Energy (signal processing), Lepton, Boson
Abstract

Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of $\sqrt{s} = 188.7 \mathrm{\ Ge\kern -0.1em V}{}$ corresponds to an integrated luminosity of $176.4\,\mbox{pb$^{-1}$}$. Events with a single energetic lepton or two acoplanar hadronic jets are selected. Within phase-space cuts, the total cross-section is measured to be $0.53 \pm 0.12 \pm 0.03 \ \rm{pb}$, consistent with the Standard Model expectation. Including our single W boson results obtained at lower $\sqrt{s}$, the WW$\gamma$ gauge couplings $\kappa_\gamma$ and $\lambda_\gamma$ are determined to be \mbox{$\kappa_\gamma = 0.93 \pm 0.16 \pm 0.09$} and \mbox{$\lambda_\gamma = -0.31^{+0.68}_{-0.19} \pm 0.13$}.

Published
2000
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47. Inclusive Σ+ and Σ0 production in hadronic Z decays

Author

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M.G. Alviggi, G. Ambrosi, H. Anderhub, V.P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, A. Bajo, L. Baksay, A. Balandras, S. Banerjee, Sw. Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B.L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J.J. Blaising, S.C. Blyth, G.J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J.G. Branson, V. Brigljevic, F. Brochu, A. Buffini, A. Buijs, J.D. Burger, W.J. Burger, X.D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A.M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y.H. Chang, U.K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G.M. Chen, H.F. Chen, H.S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A.P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. Cozzoni, B. de la Cruz, A. Csilling, S. Cucciarelli, T.S. Dai, J.A. van Dalen, R. D'Alessandro, R. de Asmundis, P. Déglon, A. Degré, K. Deiters, D. della Volpe, P. Denes, F. DeNotaristefani, A. De Salvo, M. Diemoz, D. van Dierendonck, F. Di Lodovico, C. Dionisi, M. Dittmar, A. Dominguez, A. Doria, M.T. Dova, D. Duchesneau, D. Dufournaud, P. Duinker, I. Duran, H. El Mamouni, A. Engler, F.J. Eppling, F.C. Erné, P. Extermann, M. Fabre, R. Faccini, M.A. Falagan, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, T. Ferguson, F. Ferroni, H. Fesefeldt, E. Fiandrini, J.H. Field, F. Filthaut, P.H. Fisher, I. Fisk, G. Forconi, L. Fredj, K. Freudenreich, C. Furetta, Yu. Galaktionov, S.N. Ganguli, P. Garcia-Abia, M. Gataullin, S.S. Gau, S. Gentile, N. Gheordanescu, S. Giagu, Z.F. Gong, G. Grenier, O. Grimm, M.W. Gruenewald, M. Guida, R. van Gulik, V.K. Gupta, A. Gurtu, L.J. Gutay, D. Haas, A. Hasan, D. Hatzifotiadou, T. Hebbeker, A. Hervé, P. Hidas, J. Hirschfelder, H. Hofer, G. Holzner, H. Hoorani, S.R. Hou, Y. Hu, I. Iashvili, B.N. Jin, L.W. Jones, P. de Jong, I. Josa-Mutuberrı́a, R.A. Khan, M. Kaur, M.N. Kienzle-Focacci, D. Kim, J.K. Kim, J. Kirkby, D. Kiss, W. Kittel, A. Klimentov, A.C. König, A. Kopp, V. Koutsenko, M. Kräber, R.W. Kraemer, W. Krenz, A. Krüger, A. Kunin, P. Ladron de Guevara, I. Laktineh, G. Landi, K. Lassila-Perini, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, H.J. Lee, J.M. Le Goff, R. Leiste, E. Leonardi, P. Levtchenko, C. Li, S. Likhoded, C.H. Lin, W.T. Lin, F.L. Linde, L. Lista, Z.A. Liu, W. Lohmann, E. Longo, Y.S. Lu, K. Lübelsmeyer, C. Luci, D. Luckey, L. Lugnier, L. Luminari, W. Lustermann, W.G. Ma, M. Maity, L. Malgeri, A. Malinin, C. Maña, D. Mangeol, J. Mans, P. Marchesini, G. Marian, J.P. Martin, F. Marzano, G.G.G. Massaro, K. Mazumdar, R.R. McNeil, S. Mele, L. Merola, M. Meschini, W.J. Metzger, M. von der Mey, A. Mihul, H. Milcent, G. Mirabelli, J. Mnich, G.B. Mohanty, P. Molnar, B. Monteleoni, T. Moulik, G.S. Muanza, F. Muheim, A.J.M. Muijs, M. Musy, M. Napolitano, F. Nessi-Tedaldi, H. Newman, T. Niessen, A. Nisati, H. Nowak, G. Organtini, A. Oulianov, C. Palomares, D. Pandoulas, S. Paoletti, P. Paolucci, R. Paramatti, H.K. Park, I.H. Park, G. Pascale, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, M. Pedace, S. Pensotti, D. Perret-Gallix, B. Petersen, D. Piccolo, F. Pierella, M. Pieri, P.A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, H. Postema, J. Pothier, N. Produit, D.O. Prokofiev, D. Prokofiev, J. Quartieri, G. Rahal-Callot, M.A. Rahaman, P. Raics, N. Raja, R. Ramelli, P.G. Rancoita, A. Raspereza, G. Raven, P. Razis, D. Ren, M. Rescigno, S. Reucroft, T. van Rhee, S. Riemann, K. Riles, A. Robohm, J. Rodin, B.P. Roe, L. Romero, A. Rosca, S. Rosier-Lees, J.A. Rubio, D. Ruschmeier, H. Rykaczewski, S. Saremi, S. Sarkar, J. Salicio, E. Sanchez, M.P. Sanders, M.E. Sarakinos, C. Schäfer, V. Schegelsky, S. Schmidt-Kaerst, D. Schmitz, H. Schopper, D.J. Schotanus, G. Schwering, C. Sciacca, D. Sciarrino, A. Seganti, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, E. Shumilov, A. Shvorob, T. Siedenburg, D. Son, B. Smith, P. Spillantini, M. Steuer, D.P. Stickland, A. Stone, H. Stone, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L.Z. Sun, H. Suter, J.D. Swain, Z. Szillasi, T. Sztaricskai, X.W. Tang, L. Tauscher, L. Taylor, B. Tellili, C. Timmermans, Samuel C.C. Ting, S.M. Ting, S.C. Tonwar, J. Tóth, C. Tully, K.L. Tung, Y. Uchida, J. Ulbricht, E. Valente, G. Vesztergombi, I. Vetlitsky, D. Vicinanza, G. Viertel, S. Villa, M. Vivargent, S. Vlachos, I. Vodopianov, H. Vogel, H. Vogt, I. Vorobiev, A.A. Vorobyov, A. Vorvolakos, M. Wadhwa, W. Wallraff, M. Wang, X.L. Wang, Z.M. Wang, A. Weber, M. Weber, P. Wienemann, H. Wilkens, S.X. Wu, S. Wynhoff, L. Xia, Z.Z. Xu, J. Yamamoto, B.Z. Yang, C.G. Yang, H.J. Yang, M. Yang, J.B. Ye, S.C. Yeh, An. Zalite, Yu. Zalite, Z.P. Zhang, G.Y. Zhu, R.Y. Zhu, A. Zichichi, G. Zilizi, M. Zöller, Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Muheim, Franz, Pohl, Martin, Produit, Nicolas, and Sciarrino, Deborah

Subjects
Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, L3 detector at LEP, Nuclear Theory, Hadron, ddc:500.2, Lambda, 01 natural sciences, Sigma baryon, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Ciencias Exactas, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, Sigma, Hadronization, Baryon, production in hadronic Z decays, High Energy Physics::Experiment, Production (computer science), Atomic physics, baryons
Abstract

We report on measurements of the inclusive production rate of Σ+ and Σ0 baryons in hadronic Z decays collected with the L3 detector at LEP. The Σ+ baryons are detected through the decay Σ+→pπ0, while the Σ0 baryons are detected via the decay mode Σ0→Λγ. The average numbers of Σ+ and Σ0 per hadronic Z decay are measured to be: NΣ++NΣ̄+=0.114±0.011stat±0.009syst NΣ0+NΣ̄0=0.095±0.015stat±0.013syst. These rates are found to be higher than the predictions from Monte Carlo hadronization models and analytical parameterizations of strange baryon production., Facultad de Ciencias Exactas

Published
2000
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48. Measurement of hadron and lepton-pair production at GeV at LEP

Author

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M.G. Alviggi, G. Ambrosi, H. Anderhub, V.P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, A. Balandras, R.C. Ball, S. Banerjee, Sw. Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, J. Berdugo, P. Berges, B. Bertucci, B.L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J.J. Blaising, S.C. Blyth, G.J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J.G. Branson, V. Brigljevic, F. Brochu, A. Buffini, A. Buijs, J.D. Burger, W.J. Burger, A. Button, X.D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A.M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y.H. Chang, U.K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G.M. Chen, H.F. Chen, H.S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A.P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. Cozzoni, B. de la Cruz, A. Csilling, S. Cucciarelli, T.S. Dai, J.A. van Dalen, R. D'Alessandro, R. de Asmundis, P. Déglon, A. Degré, K. Deiters, D. della Volpe, P. Denes, F. DeNotaristefani, A. De Salvo, M. Diemoz, D. van Dierendonck, F. Di Lodovico, C. Dionisi, M. Dittmar, A. Dominguez, A. Doria, M.T. Dova, D. Duchesneau, D. Dufournaud, P. Duinker, I. Duran, H. El Mamouni, A. Engler, F.J. Eppling, F.C. Erné, P. Extermann, M. Fabre, R. Faccini, M.A. Falagan, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, T. Ferguson, F. Ferroni, H. Fesefeldt, E. Fiandrini, J.H. Field, F. Filthaut, P.H. Fisher, I. Fisk, G. Forconi, L. Fredj, K. Freudenreich, C. Furetta, Yu. Galaktionov, S.N. Ganguli, P. Garcia-Abia, M. Gataullin, S.S. Gau, S. Gentile, N. Gheordanescu, S. Giagu, Z.F. Gong, G. Grenier, O. Grimm, M.W. Gruenewald, M. Guida, R. van Gulik, V.K. Gupta, A. Gurtu, L.J. Gutay, D. Haas, A. Hasan, D. Hatzifotiadou, T. Hebbeker, A. Hervé, P. Hidas, J. Hirschfelder, H. Hofer, G. Holzner, H. Hoorani, S.R. Hou, I. Iashvili, B.N. Jin, L.W. Jones, P. de Jong, I. Josa-Mutuberrı́a, R.A. Khan, M. Kaur, M.N. Kienzle-Focacci, D. Kim, D.H. Kim, J.K. Kim, S.C. Kim, J. Kirkby, D. Kiss, W. Kittel, A. Klimentov, A.C. König, A. Kopp, V. Koutsenko, M. Kräber, R.W. Kraemer, W. Krenz, A. Krüger, A. Kunin, P. Ladron de Guevara, I. Laktineh, G. Landi, K. Lassila-Perini, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, H.J. Lee, J.M. Le Goff, R. Leiste, E. Leonardi, P. Levtchenko, C. Li, S. Likhoded, C.H. Lin, W.T. Lin, F.L. Linde, L. Lista, Z.A. Liu, W. Lohmann, E. Longo, Y.S. Lu, K. Lübelsmeyer, C. Luci, D. Luckey, L. Lugnier, L. Luminari, W. Lustermann, W.G. Ma, M. Maity, L. Malgeri, A. Malinin, C. Maña, D. Mangeol, P. Marchesini, G. Marian, J.P. Martin, F. Marzano, G.G.G. Massaro, K. Mazumdar, R.R. McNeil, S. Mele, L. Merola, M. Meschini, W.J. Metzger, M. von der Mey, A. Mihul, H. Milcent, G. Mirabelli, J. Mnich, G.B. Mohanty, P. Molnar, B. Monteleoni, T. Moulik, G.S. Muanza, F. Muheim, A.J.M. Muijs, M. Musy, M. Napolitano, F. Nessi-Tedaldi, H. Newman, T. Niessen, A. Nisati, H. Nowak, Y.D. Oh, G. Organtini, A. Oulianov, C. Palomares, D. Pandoulas, S. Paoletti, P. Paolucci, R. Paramatti, H.K. Park, I.H. Park, G. Pascale, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, M. Pedace, S. Pensotti, D. Perret-Gallix, B. Petersen, D. Piccolo, F. Pierella, M. Pieri, P.A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, H. Postema, J. Pothier, N. Produit, D.O. Prokofiev, D. Prokofiev, J. Quartieri, G. Rahal-Callot, M.A. Rahaman, P. Raics, N. Raja, R. Ramelli, P.G. Rancoita, A. Raspereza, G. Raven, P. Razis, D. Ren, M. Rescigno, S. Reucroft, T. van Rhee, S. Riemann, K. Riles, A. Robohm, J. Rodin, B.P. Roe, L. Romero, A. Rosca, S. Rosier-Lees, J.A. Rubio, D. Ruschmeier, H. Rykaczewski, S. Saremi, S. Sarkar, J. Salicio, E. Sanchez, M.P. Sanders, M.E. Sarakinos, C. Schäfer, V. Schegelsky, S. Schmidt-Kaerst, D. Schmitz, H. Schopper, D.J. Schotanus, G. Schwering, C. Sciacca, D. Sciarrino, A. Seganti, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, E. Shumilov, A. Shvorob, T. Siedenburg, D. Son, B. Smith, P. Spillantini, M. Steuer, D.P. Stickland, A. Stone, H. Stone, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L.Z. Sun, H. Suter, J.D. Swain, Z. Szillasi, T. Sztaricskai, X.W. Tang, L. Tauscher, L. Taylor, C. Timmermans, Samuel C.C. Ting, S.M. Ting, S.C. Tonwar, J. Tóth, C. Tully, K.L. Tung, Y. Uchida, J. Ulbricht, E. Valente, G. Vesztergombi, I. Vetlitsky, D. Vicinanza, G. Viertel, S. Villa, M. Vivargent, S. Vlachos, I. Vodopianov, H. Vogel, H. Vogt, I. Vorobiev, A.A. Vorobyov, A. Vorvolakos, M. Wadhwa, W. Wallraff, M. Wang, X.L. Wang, Z.M. Wang, A. Weber, M. Weber, P. Wienemann, H. Wilkens, S.X. Wu, S. Wynhoff, L. Xia, Z.Z. Xu, B.Z. Yang, C.G. Yang, H.J. Yang, M. Yang, J.B. Ye, S.C. Yeh, An. Zalite, Yu. Zalite, Z.P. Zhang, G.Y. Zhu, R.Y. Zhu, A. Zichichi, G. Zilizi, and M. Zöller

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Pair production, 010308 nuclear & particles physics, 0103 physical sciences, Hadron, 010306 general physics, 01 natural sciences, Lepton
Published
2000
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49. Measurement of $R_\mathrm{b}$ and $\mathrm{Br}(\mathrm{b} \rightarrow \ell\nu\mathrm{X})$ at LEP using double-tag methods

Author

Dimitri Bourilkov, L. Barone, F. C. Erné, P. Spillantini, J. G. Branson, S. Villa, A. Lavorato, G. Landi, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Simone Paoletti, S. N. Ganguli, P. Marchesini, B. Petersen, Lamberto Luminari, A. Degré, H. Rykaczewski, K. Freudenreich, A. J.M. Muijs, Giovanni Organtini, Manjit Kaur, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, H. Wilkens, Z. Szillasi, V. Koutsenko, M. Chemarin, L. Romero, Z. A. Liu, A. Vorvolakos, M. Biasini, C. Dionisi, Raffaello D'Alessandro, L. Boldizsar, P. Laurikainen, B. Bertucci, D. Kiss, G. S. Muanza, A. De Salvo, Igor Vorobiev, B. P. Roe, S. X. Wu, Pablo Garcia-Abia, Alain Hervé, Pierre Lecomte, Peter H. Fisher, Marco Meschini, Leonardo Merola, Subir Sarkar, D. della Volpe, Jean Fay, M. Bourquin, M. Pohl, P. Levtchenko, Y. S. Lu, S. Cucciarelli, Panos A Razis, Werner Lustermann, Charles Timmermans, Kati Lassila-Perini, H. El Mamouni, F. Cavallari, L. Tauscher, A. Button, T. Azemoon, Joachim Mnich, P. Achard, J. M. Le Goff, N. Gheordanescu, A. Seganti, Harvey B Newman, V. Plyaskin, A. Malinin, Adrian Biland, C. Maña, F. Di Lodovico, A. Shvorob, Carlo Civinini, A. C. Weber, Nicolas Produit, G. Raven, Marta Felcini, L. Xia, A. Robohm, J. A. Rubio, Aleandro Nisati, F. Cesaroni, P. Molnar, M. Chamizo, T. Angelescu, A. Chen, M. N. Kienzle-Focacci, J. Alcaraz, Christopher George Tully, M. Steuer, M. Aguilar-Benitez, G. Mirabelli, H.F. Chen, J. H. Field, M. Zöler, M. Vivargent, D. Piccolo, O. Grimm, Joseph Quartieri, Samuel C.C. Ting, P. Duinker, Marcos Cerrada, I. Korolko, Simonetta Gentile, Emilio Leonardi, G. M. Chen, A. Bay, Francesco Becattini, M. T. Dova, G. Schwering, D. Sciarrino, E. J. Sanchez, I. Vodopianov, S. Schmidt-Kaerst, Yu. Galaktionov, Herwig Schopper, P. Berges, H. Postema, K. Lübelsmeyer, Wolfgang Lohmann, H. Vogt, S. C. Kim, Nicanor Colino, P. Bagnaia, A. Csilling, M. Lebeau, C. Furetta, A. Engler, C. G. Yang, F. Cotorobai, Aaron Dominguez, Felicitas Pauss, Y. D. Oh, F. Anselmo, T. Paul, A. Buijs, J. Pothier, Yu. Zalite, M. A. Rahaman, D. Perret-Gallix, A. Arefiev, H. S. Fesefeldt, E. Pistolesi, L. Lugnier, R. Ramelli, D.W. Schmitz, G. Pascale, A. Klimentov, U. K. Chaturvedi, H. J. Yang, K. Sudhakar, S. W. Banerjee, P. Lebrun, F. Pierella, Federico Cindolo, X. D. Cai, R. R. McNeil, R. Faccini, P. de Jong, X. L. Wang, A. Balandras, N. Shivarov, G. G.G. Massaro, M. Pauluzzi, Robert Clare, M. von der Mey, J. Casaus, D. Kamrad, G. Chiefari, S. Shevchenko, P. Bartalini, F. Brochu, S. Vlachos, G. Chen, G. Alemanni, S. Rosier-Lees, P. Le Coultre, G. Carlino, P. G. Rancoita, Peter Raics, W. G. Ma, J. B. Ye, W. Kittel, Oleg Fedin, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, B. N. Jin, Francesca Nessi-Tedaldi, A. Favara, J. Rodin, R. Barillère, M. Basile, F. Behner, T. Niessen, Saverio Braccini, Kajari Mazumdar, M. Napolitano, Max Weber, M. Acciarri, T. Siedenburg, R. Ostonen, G. Rahal-Callot, N. Raja, Marco Pieri, G. Forconi, A. Mihul, H. Nowak, Egidio Longo, S. Wynhoff, F. L. Linde, D. Vicinanza, M. Capell, Zheng Wang, Zhenyu Zhang, G. Holzner, An.A. Vorobyov, Michael Dittmar, S. S. Gau, Vuko Brigljevic, S. C. Tonwar, W. J. Burger, F. Ferroni, Frank Filthaut, Jozsef Toth, J. D. Burger, K. Riles, A. Rosca, X. Chereau, M. E. Sarakinos, D. van Dierendonck, D. Ren, G. Castellini, Claudio Luci, D. Pandoulas, A. Lebedev, Dong-Chul Son, S. Bhattacharya, H. Suter, Ia Iashvili, D. Duchesneau, H. S. Chen, D. Mangeol, J. K. Kim, D. Luckey, L. Servoli, J. D. Swain, Pierluigi Paolucci, Dong-Hyun Kim, G. Zilizi, M. Gataullin, J. Salicio, H. Anderhub, A. P. Colijn, J. J. Blaising, J. Hirschfelder, D. O. Prokofiev, A. Buffini, D. Peach, H. Milcent, S. C. Yeh, Stefano Giagu, P. Ladron de Guevara, F. Marzano, G. Coignet, G. Grenier, Ren-Yuan Zhu, Jasper Kirkby, M. A. Falagan, S. C. Blyth, Imad Baptiste Laktineh, Lucas Taylor, M. G. Alviggi, A. Stone, M. Rescigno, W. Wallraff, G. Marian, L. Baksay, Anna Katharina Kopp, T. Moulik, Riccardo Paramatti, W. Krenz, Michele Guida, J. P. Martin, A. Kunin, S. Reucroft, B. Smith, Giovanni Passaleva, A. Böhm, S. Banerjee, Hafeez R Hoorani, Mario Campanelli, R. Leiste, P. Wienemann, Georgi Sultanov, G. J. Bobbink, Christoph Paus, G. Y. Zhu, E. Shumilov, M. Fabre, T. S. Dai, R. A. Khan, D. P. Stickland, F. Ziegler, Y. H. Chang, Mingming Yang, B. De La Cruz, B. Monteleoni, W. J. Metzger, H. J. Lee, Marcella Diemoz, A. M. Cartacci, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, M. Musy, B. Cozzoni, P. Déglon, V. Shoutko, Claudia Cecchi, R. de Asmundis, I. Fisk, D. Kim, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, N. Cavallo, B. Borgia, M. Pedace, T. van Rhee, A. Gurtu, T. Sztaricskai, An. Zalite, H. K. Park, J. Berdugo, R. Battiston, R. C. Ball, J. Ulbricht, E. Valente, C-Q. Li, V. K. Gupta, Thomas Ferguson, D. Ruschmeier, Pàl Hidas, Z. F. Gong, L. J. Gutay, D. Haas, I. Duran, X. W. Tang, A. Hasan, F. DeNotaristefani, G. Viertel, L. Z. Sun, P. A. Piroué, J. A. van Dalen, Tariq Aziz, Alessandra Doria, G. Cara Romeo, J. Busenitz, Hans J. Vogel, Manas Maity, G. Ambrosi, I. Clare, W. T. Lin, S. Costantini, F. J. Eppling, L. W. Jones, I. Vetlitsky, Crisostomo Sciacca, S. R. Hou, M. Wadhwa, R. van Gulik, Peter Denes, D. J. Schotanus, P. Extermann, Salvatore Mele, S. M. Ting, Christoph Schäfer, B. Z. Yang, H. Hofer, O. Adriani, K. L. Tung, V. P. Andreev, F. Muheim, C. Palomares, U. Becker, J.V. Allaby, S. Patricelli, D. Hatzifotiadou, L. Bellucci, L. Fredj, A. Barczyk, D. Prokofiev, Luisa Cifarelli, Speranza Falciano, A. Straessner, Luca Lista, Sabine Riemann, Y. Uchida, Minhong Wang, M. P. Sanders, B. L. Betev, A. C. König, D. Dufournaud, I. H. Park, Z. Z. Xu, C. H. Lin, and V. Pojidaev

Subjects
Quark, Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Branching fraction, High Energy Physics::Phenomenology, Hadron, Order (ring theory), Momentum, Nuclear physics, High Energy Physics::Experiment, Impact parameter, Engineering (miscellaneous), Lepton
Abstract

We present a combined measurement of $\Rb = \Gamma(\mathrm{Z \rightarrow b\overline{b}}) / \Gamma(\mathrm{Z} \rightarrow\mbox{hadro ns})$ and the semileptonic branching ratio of b quarks in Z decays, $\Brbl$, using double-tag methods. Two analyses are performed on one million hadronic Z decays collected in 1994 and 1995. The first analysis exploits the capabilities of the silicon microvertex detector. The tagging of b-events is based on the large impact parameter of tracks from weak b-decays with respect to the $\mathrm{e^+e^-}$ collision point. In the second analysis, a high-$p_t$ lepton tag is used to enhance the b-component in the sample and its momentum spectrum is used to constrain the model dependent uncertainties in the semileptonic b-decay. The analyses are combined in order to provide precise determinations of $\Rb$ and $\Brbl$: Rb = 0.2174 \pm 0.0015\mbox{(stat.)} \pm 0.0028\mbox{(sys.)}; $\Brbl = (10.16 \pm 0.13\mbox{(stat.)} \pm 0.30\mbox{(sys.)})\%.

Published
2000
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50. Hard-photon production and tests of QED at LEP

Author

H. Milcent, T. Moulik, Dimitri Bourilkov, G. Landi, R. Y. Zhu, G. Chiefari, B. Petersen, E. Valente, G. Cara Romeo, A. Lebedev, A. Straessner, Dong-Chul Son, S. Pensotti, Luca Lista, Gyorgy Vesztergombi, Luca Malgeri, J. J. Blaising, J. Hirschfelder, James G Branson, Vladimir Andreev, Stefano Giagu, D. Ruschmeier, J.P. Martin, Willis Lin, A. De Salvo, P. Duinker, A. Klimentov, G. Ambrosi, K. Freudenreich, F. Brochu, D. della Volpe, A. A. Vorobyov, A.M. Cartacci, E. Fiandrini, S. Costantini, Riccardo Paramatti, A. Kunin, Igor Vorobiev, M. von der Mey, Gianpaolo Carlino, P. Bartalini, Mariagrazia Alviggi, S. Riemann, M. Pohl, B. L. Betev, Francesca Nessi-Tedaldi, F. Di Lodovico, M. Campanelli, A. Zichichi, P. Levtchenko, Helmut Vogel, T. Siedenburg, G. Rahal-Callot, Panos A Razis, Y. H. Chang, H. J. Lee, Marcella Diemoz, N. Raja, F. Ferroni, L. Cifarelli, Peter Raics, Oleg Fedin, G. Schwering, Max Weber, P. Marchesini, F. J. Eppling, H. Suter, Ia Iashvili, C. Furetta, D. Kiss, V. Brigljevic, Simone Paoletti, H. Anderhub, M. Fabre, J. B. Ye, Kajari Mazumdar, Y. Uchida, Mingming Yang, A. Gurtu, A. Seganti, Harvey B Newman, M. Musy, A. J.M. Muijs, W. J. Metzger, I. Vetlitsky, L. Lugnier, R. Barillère, P. Wienemann, Georgi Sultanov, Michele Guida, Manjit Kaur, B. Smith, V. Plyaskin, M. Capell, F. Pierella, A. Favara, Federico Cindolo, A. Biland, M. Acciarri, A. Balandras, S. Braccini, S. Sarkar, Raffaello D'Alessandro, Zheng Wang, L. W. Jones, Pàl Hidas, S. Bhattacharya, M. Napolitano, Z. P. Zhang, A. Rosca, C. Sciacca, F. DeNotaristefani, U. Becker, Hafeez R Hoorani, M. E. Sarakinos, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, Minhong Wang, M. P. Sanders, S. Gentile, M. Vivargent, A. Barczyk, E. J. Sanchez, Guo-Ming Chen, B. P. Roe, Alessandra Doria, M. Bourquin, R. van Gulik, D. Schmitz, A. Button, Dong-Hyun Kim, Manas Maity, L. Z. Sun, Pierluigi Paolucci, Z. Szillasi, P. G. Rancoita, D. van Dierendonck, J. Salicio, G. Forconi, P. Ladron de Guevara, G. Zilizi, M. Chemarin, P. Extermann, W. Kittel, Salvatore Mele, P. Lecomte, G. J. Grenier, I. Fisk, N. Cavallo, Frank Filthaut, R. de Asmundis, G. M. Chen, Z. A. Liu, A. Vorvolakos, Thomas Ferguson, R. Ramelli, Joachim Mnich, P. Berges, P. Bagnaia, G. Pascale, V. K. Gupta, M. Rescigno, P. Achard, T. Angelescu, M. N. Kienzle-Focacci, Christoph Schäfer, B. Z. Yang, K. Sudhakar, G. Marian, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, S. S. Gau, J. A. Rubio, Giovanni Passaleva, M. Gataullin, L. Tauscher, T. Azemoon, X. W. Tang, D. Dufournaud, A. Csilling, A. Stone, D. O. Prokofiev, A. Robohm, Suresh C Tonwar, Jasper Kirkby, M. A. Falagan, X. D. Cai, I. H. Park, H. Nowak, D. J. Schotanus, R. Faccini, B. De La Cruz, S. Saremi, Thomas Hebbeker, Paul Lecoq, D. Vicinanza, Y. S. Lu, A. Shvorob, I. Vodopianov, A. Engler, A. Chen, H. El Mamouni, J. Casaus, Marco Meschini, C. H. Lin, V. Pojidaev, David Stickland, J. M. Le Goff, M. Zöller, L. Bellucci, N. Gheordanescu, M. Lebeau, P. Déglon, D. Duchesneau, H. S. Chen, F. C. Erné, D. Haas, L. Servoli, Aleandro Nisati, E. Longo, Anna Katharina Kopp, V. Koutsenko, Marcos Cerrada, Maurizio Biasini, Marta Felcini, J. D. Burger, Francesco Becattini, D. Ren, A. Weber, H. S. Fesefeldt, E. Pistolesi, S. R. Hou, M. Wadhwa, F. Cesaroni, Joseph Quartieri, F. L. Linde, Valery Schegelsky, Axel König, Kati Lassila-Perini, C. Li, J. Pothier, B. Stoyanov, Yu. Zalite, C. Maña, S. Schmidt-Kaerst, R. W. Kraemer, Y. D. Oh, U. K. Chaturvedi, S. Reucroft, S. Banerjee, S. Villa, Christopher George Tully, Davide Piccolo, P. Denes, Emilio Leonardi, H. Rykaczewski, Giovanni Organtini, P. Spillantini, H. Wilkens, H. J. Yang, Luciano Barone, A. P. Colijn, Yu. Galaktionov, Wolfgang Lohmann, H. Vogt, B. Bertucci, S. C. Kim, A. Degré, S. Cucciarelli, S. Falciano, P. H. Fisher, J. Allaby, D. Sciarrino, Francesca Cavallari, J. Tóth, R. A. Khan, Alexei Raspereza, S. C. Blyth, G. S. Muanza, Konrad Deiters, M. Pedace, T. van Rhee, Aaron Dominguez, S. 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A. van Dalen, S. C. Yeh, A. Arefiev, R. R. McNeil, F. Marzano, Marco Pieri, G. Holzner, W. Krenz, Samuel C.C. Ting, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, B. Cozzoni, Roberto Battiston, B. Borgia, M. T. Dova, B. N. Jin, J. Ulbricht, I. Clare, R. Leiste, Christoph Paus, B. Monteleoni, Howard A. Stone, T.S. Dai, D. Prokofiev, M. Pauluzzi, I. Duran, D. Hatzifotiadou, Laszlo Boldizsar, L. Fredj, S. Patricelli, S. M. Ting, R. C. Ball, Werner Lustermann, Charles Timmermans, A. Malinin, G. J. Bobbink, H.F. Chen, L. Luminari, K. Lübelsmeyer, A. Buffini, D. Pandoulas, W. J. Burger, C. Dionisi, Michael Dittmar, J. D. Swain, A. Böhm, G. Coignet, J. K. Kim, L3 (IHEF, IoP, FNWI), Flores, Sylvie, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. 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S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Sr, H., I, I., Jin, B. N., Jones, L. W., Jong, P. d., I, J., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, D. H., Kim, J. K., Kim, S. C., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., V, K., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, I, L., Landi, G., Lassila Perini, K., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. 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Subjects
Nuclear and High Energy Physics, Particle physics, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], ENERGIES, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, DETECTOR, L3 EXPERIMENT, Physics, GAMMA-GAMMA%28GAMMA%29%22">E(+)E(-)->GAMMA-GAMMA(GAMMA), 010308 nuclear & particles physics, COUPLINGS, Excited state, Production (computer science), Atomic physics, Particle Physics - Experiment
Abstract

The total and differential cross sections of the process $\epem \ra n \gamma$ with $n \geq 2$ are measuredusing data collected by the L3 experiment at centre--of--mass energies of $\sqrt{s}=183$ and $189$\GeV{}. The results are in agreement with the Standard Model expectations. Limits are set on deviationsfrom QED, contact interaction cut-off parameters and masses of excited electrons. The total and differential cross sections of the process e + e − → nγ with n ≥2 are measured using data collected by the L3 experiment at centre-of-mass energies of s =183 and 189 GeV . The results are in agreement with the Standard Model expectations. Limits are set on deviations from QED, contact interaction cut-off parameters and masses of excited electrons. The total and differential cross sections of the process e+e- -> n gamma with n >= 2 are measured using data collected by the L3 experiment at centre-of-mass energies of \sqrt{s}=183 and 189 GeV. The results are in agreement with the Standard Model expectations. Limits are set on deviations from QED, contact interaction cut-off parameters and masses of excited electrons.

Published
2000
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