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1. ULTRARAM: Toward the Development of a III–V Semiconductor, Nonvolatile, Random Access Memory

Author

Dominic Lane, Richard Beanland, Manus Hayne, Richard J. Potter, and P. D. Hodgson

Subjects
010302 applied physics, Physics, business.industry, TK, State (functional analysis), 01 natural sciences, Electronic, Optical and Magnetic Materials, Switching time, Non-volatile memory, Memory management, Semiconductor, Logic gate, 0103 physical sciences, Optoelectronics, Electrical and Electronic Engineering, business, Energy (signal processing), Quantum tunnelling
Abstract

ULTRARAM is a III–V compound semiconductor memory concept that exploits quantum resonant tunneling to achieve nonvolatility at extremely low switching energy per unit area. Prototype devices are fabricated in a $2\times2$ memory array formation on GaAs substrates. The devices show 0/1 state contrast from program/erase (P/E) cycles with 2.5 V pulses of 500- $\mu \text{s}$ duration, a remarkable switching speed for a $20~ \mu \text{m}$ gate length. Memory retention is tested for $8\times 10^{4}$ s, whereby the 0/1 states show adequate contrast throughout, whilst performing $8\times 10^{4}$ readout operations. Further reliability is demonstrated via program-read-erase-read endurance cycling for $10^{6}$ cycles with 0/1 contrast. A half-voltage array architecture proposed in our previous work is experimentally realized, with an outstandingly small disturb rate over $10^{5}$ half-voltage cycles.

Published
2021
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2. Experimental evidence for conservation conflict interventions: The importance of financial payments, community trust and equity attitudes

Author

Jeremy J. Cusack, A. B. Duthie, Isabel L. Jones, Jessica L. Hogan, Isla D. Hodgson, Onjamirindra S. Rakotonarivo, Jeroen Minderman, Nils Bunnefeld, Andrew Reid Bell, University of St Andrews. Environmental Change Research Group, and University of St Andrews. School of Geography & Sustainable Development

Subjects
0106 biological sciences, S1, QH301 Biology, media_common.quotation_subject, Psychological intervention, experimental game, 010603 evolutionary biology, 01 natural sciences, QH301, Monetary incentives, lcsh:QH540-549.5, Geese, lcsh:Human ecology. Anthropogeography, S Agriculture (General), SDG 2 - Zero Hunger, Ecology, Evolution, Behavior and Systematics, agriculture, media_common, 2. Zero hunger, human–wildlife conflict, Public economics, Human–wildlife conflict, business.industry, Equity (finance), Agriculture, DAS, 15. Life on land, Payment, Experimental game, 010601 ecology, Scotland, geese, lcsh:Ecology, Business, lcsh:GF1-900, monetary incentives
Abstract

Funding for this study was provided by the European Research Council under the European Union's H2020/ERC grant agreement no. 679651 (ConFooBio) to N.B. The experimental game was derived from NonCropShare, which was produced with financial support from the CGIAR Research Program on Water, Land and Ecosystems (WLE) and the CGIAR Research Program on Policies, Institutions and Markets (PIM). A.B.D. is supported by a Leverhulme Trust Early Career Fellowship. 1. Conflicts between the objectives of agricultural production and conservation are becoming increasingly complex. Of vital importance to the success of conflict interventions is a detailed understanding of how stakeholders react to management interventions as well as the influence of interacting social and political factors. 2. Across Europe, goose populations have increased considerably, leading to widespread impacts on agriculture and significant conflicts between different stakeholder groups. We used a novel experimental game to understand farmer preferences regarding the design of goose conflict interventions in Scotland. We specifically examined how three alternative interventions (government financial support for scaring activities, subsidies and agglomeration payments that include bonus payments for adoption by neighbouring farms) affect farmer propensity to support goose conservation interests through reduced shooting and the provision of sacrificial crops. We also examined the links between within-game behaviour and real-life attributes and attitudes of farmers. 3. We found that all three interventions were conducive to pro-conservation behaviour in the games. The effects of all three interventions were stronger among farmers who had higher trust towards other community members. Agglomeration payments led to increased provision of sacrificial crops among farmers with negative attitudes towards the current allocation of goose finances in Scotland. Farmers with more positive attitudes towards wildlife tourism were more likely to provide more sacrificial crops, and less likely to shoot in the games. 4. Farmers' real-life traits had a statistically significant but marginal impact on the effectiveness of financial payments, such as the number of geese being shot on their own lands, remoteness and crop damage by geese. 5. These game results provide evidence for the potential of innovative financial instruments in conflict management and their interactions with social factors such as community trust, equity attitude and real-life shooting levels. Our study highlights the importance of socio-political elements in fostering mutually beneficial outcomes in conservation conflicts in addition to addressing material losses to wildlife. We also show how games can help in addressing conservation conflicts in a wide range of settings. Publisher PDF

Published
2020
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3. Who knows best? Understanding the use of research-based knowledge in conservation conflicts

Author

Steve Redpath, Juliette Young, Isla D. Hodgson, and Anke Fischer

Subjects
Environmental Engineering, Process (engineering), Status quo, media_common.quotation_subject, 0208 environmental biotechnology, Intention, 02 engineering and technology, 010501 environmental sciences, Management, Monitoring, Policy and Law, 01 natural sciences, Ecology and Environment, Politics, Political science, Knowledge use, Waste Management and Disposal, 0105 earth and related environmental sciences, media_common, Land use, business.industry, Interpretation (philosophy), General Medicine, Public relations, Transparency (behavior), 020801 environmental engineering, Knowledge, Scotland, business, Knowledge transfer
Abstract

The way in which research-based knowledge is used, interpreted and communicated by different actors can influence the dynamics of conservation conflicts. The conflict that occurs between grouse shooting interests and the conservation of birds of prey in Scotland is notoriously complex, involving multiple actors at multiple levels, and shaped by the values and world views of these actors. This paper explores how research-based knowledge is used in the debate by six key organisations, and looks to understand the drivers that may influence knowledge use and interpretation in this, and other, cases of conservation conflict. Research was used to both legitimise and reinforce certain world views, and to support associated political actions that would cause these to become reality. Actors offered divergent interpretations of the same piece of research, emphasising different findings and outcomes. Research-based knowledge was thus employed by actors to support or counter the ‘status quo’, and challenge other claims that clashed with their own values. Although the intention of such knowledge use is unclear, the selective reconstruction of research by actors could stem from, and reiterate, divergent value systems. This may pose significant challenges to conflict mitigation efforts; whilst some may look to research-based knowledge as the bringer of truth, its interpretation by different actors may exacerbate existing rifts between stakeholders; promoting polarisation of views. Mitigation strategies should be sensitive to this, and aim to improve the inclusiveness and transparency of the knowledge transfer process.

Published
2019
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4. Demonstration of a Fast, Low-Voltage, III-V Semiconductor, Non-Volatile Memory

Author

Manus Hayne, Richard J. Potter, Dominic Lane, and P. D. Hodgson

Subjects
010302 applied physics, Materials science, business.industry, Gate dielectric, Pulse duration, Semiconductor memory, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Switching time, Non-volatile memory, Logic gate, 0103 physical sciences, Optoelectronics, Node (circuits), 0210 nano-technology, business, Low voltage
Abstract

ULTRARAM™ is a III-V semiconductor memory technology which exploits resonant tunneling to allow ultra-low-energy memory logic switching (per unit area), whilst retaining non-volatility. Single-cell memories developed on GaAs substrates with a revised design and atomic-layer-deposition Al 2 O 3 gate dielectric demonstrate significant improvements compared to prior prototypes. Floating-gate (FG) memories with 20-μm gate length show 0/1 state contrast from 2.5-V program-read-erase-read (P/E) cycles with 500-μs pulse duration, which would scale to sub-ns switching speed at 20-nm node. Nonvolatility is confirmed by memory retention tests of 4×103 s with both 0 and 1 states completely invariant. Single cells demonstrate promising endurance results, undergoing 104 cycles without degradation. P/E cycling and disturbance tests are performed using half-voltages (±1.25 V), validating the high-density random access memory (RAM) architecture proposed previously. Finally, memory logic is retained after an equivalent of >105 P/E disturbances.

Published
2021
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5. Strain Hardening Behavior of Laminate Structure With Stable bcc/fcc Bimetal Interfaces

Author

Minghui Cai, Xuqiang Huang, Peter D. Hodgson, and Zhaoyang Lu

Subjects
010302 applied physics, Materials science, strain hardening, nanoindentation, lcsh:T, Materials Science (miscellaneous), laminate structure, Lüders band, 02 engineering and technology, Strain hardening exponent, 021001 nanoscience & nanotechnology, 01 natural sciences, Instability, lcsh:Technology, Bimetal, bimetal interface, fracture, 0103 physical sciences, Ultimate tensile strength, Hardening (metallurgy), Interphase, Composite material, 0210 nano-technology, Diffusion bonding
Abstract

This work developed a well-bonded bcc/fcc bimetal interphase, which was produced by a two-step process involving diffusion bonding and conventional rolling. The high-quality interface maintained its integrity even at fracture. The earlier tensile instability in the core steel layer was constrained by the neighboring stable Cu layers on both sides, leading to extra strain hardening and consequently higher ductility. An increase in twin density or slip bands and shear deformation between the layers might be the primary causes for the observed hardening behaviors in the near-interface regions.

Published
2020
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6. Heteroepitaxial Integration of Mid-Infrared InAsSb Light Emitting Diodes on Silicon

Author

Adam P. Craig, Peter J. Carrington, Evangelia Delli, E. Repiso, P. D. Hodgson, Andrew R. J. Marshall, Anthony Krier, Jonathan P. Hayton, and Qi Lu

Subjects
lcsh:Applied optics. Photonics, Materials science, Silicon, chemistry.chemical_element, 02 engineering and technology, Epitaxy, 01 natural sciences, law.invention, 010309 optics, law, molecular beam epitaxy, 0103 physical sciences, lcsh:QC350-467, InAsSb, Electrical and Electronic Engineering, Silicon photonics, silicon photonics, business.industry, lcsh:TA1501-1820, mid-infrared, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, light emitting diode, chemistry, Optoelectronics, Light emission, Quantum efficiency, Photonics, 0210 nano-technology, business, lcsh:Optics. Light, Molecular beam epitaxy, Light-emitting diode
Abstract

Silicon photonics has emerged as the most promising technology for next-generation compact optoelectronic systems, but further development is still required to achieve efficient and reliable on-chip light sources. Direct epitaxial growth of antimonide-based compound semiconductor materials on silicon provides a pathway toward the monolithic integration of new, mid-infrared solid-state light sources and comprehensive photonic circuits on silicon platforms. Such devices have wide-ranging applications in environmental monitoring and medical diagnostics. This paper reports on the realization of a mid-infrared InAsSb light emitting diode directly integrated onto silicon using molecular beam epitaxy. The heteroepitaxial integration of the InAsSb p-i-n device onto silicon was achieved with the use of a novel, antiphase domain-free, GaSb-on-silicon buffer layer. The device exhibited efficient light emission at room temperature, peaking at around 4.5 μm, which corresponds well to the CO2 atmospheric absorption band. An output power of 6 μW and an external quantum efficiency of 0.011% was measured at 300 K. These results demonstrate mid-infrared III-V light emitting diodes can be directly grown on silicon, which is an essential step towards the realization of the next generation, on-chip integrated light sources.

Published
2019

7. Rapid, Chemical-Free Generation of Optically Scattering Structures in Poly(ethylene terephthalate) Using a CO2 Laser for Lightweight and Flexible Photovoltaic Applications

Author

Simon D. Hodgson and Alice R. Gillett

Subjects
Materials science, Article Subject, lcsh:TJ807-830, lcsh:Renewable energy sources, 02 engineering and technology, 01 natural sciences, Light scattering, Roll-to-roll processing, law.invention, Optical microscope, law, 0103 physical sciences, Surface roughness, General Materials Science, 010302 applied physics, Renewable Energy, Sustainability and the Environment, business.industry, Scattering, General Chemistry, 021001 nanoscience & nanotechnology, Microstructure, Laser, Atomic and Molecular Physics, and Optics, Optoelectronics, Profilometer, 0210 nano-technology, business
Abstract

Highly light scattering structures have been generated in a poly(ethylene terephthalate) (PET) film using a CO2 laser. The haze, and in some cases the transparency, of the PET films have been improved by varying the processing parameters of the laser (namely, scanning velocity, laser output power, and spacing between processed tracks). When compared with the unprocessed PET, the haze has improved from an average value of 3.26% to a peak of 55.42%, which equates to an absolute improvement of 52.16% or a 17-fold increase. In addition to the optical properties, the surfaces have been characterised using optical microscopy and mapped with an optical profilometer. Key surface parameters that equate to the amount and structure of surface roughness and features have been analysed. The CO2 laser generates microstructures at high speed, without affecting the bulk properties of the material, and is inherently a chemical-free process making it particularly applicable for use in industry, fitting well with the high-throughput, roll to roll processes associated with the production of flexible organic photovoltaic devices.

Published
2018
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8. Using sub-micron silver-nanoparticle based films to counter biofilm formation by Gram-negative bacteria

Author

S. N. Baxter, Simon D. Hodgson, P. J. Thomas, Alice R. Gillett, and Graham C. Smith

Subjects
Microscope, Materials science, Scanning electron microscope, General Physics and Astronomy, Nanoparticle, 02 engineering and technology, Surfaces and Interfaces, General Chemistry, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Silver nanoparticle, 0104 chemical sciences, Surfaces, Coatings and Films, law.invention, Coating, Chemical engineering, X-ray photoelectron spectroscopy, law, Transmission electron microscopy, engineering, Particle size, 0210 nano-technology
Abstract

Composite films comprised of silver nanoparticles (AgNPs) grown using a low-cost straightforward chemical bath based method have been deposited on glass microscope slides to investigate their potential as a sacrificial antibacterial coating. The as-deposited films have been characterised using scanning electron microscopy (SEM) and optical profilometry. These suggested that the films were relatively uniform in coverage. Chemical composition of the AgNP films has been studied by using X-ray photoelectron spectroscopy (XPS). The XPS analysis indicated that the Ag was in a metallic form able to sustain plasmon behaviour, and that low levels of residual nanoparticle precursors were present. Particle size was characterised using transmission electron microscopy (TEM) which showed an average particle size of 10.6 nm. The effectiveness of the films as an antibacterial coating was tested against Escherichia coli. The AgNP film was determined to be effective in the killing of E. coli cells over a 24 h period when compared to equivalent samples that contained no silver. Of particular note was that only minimal bacterial growth was detected over the first 12 h of testing, up to 78.6 times less than the control samples, suggesting the film is very efficient at slowing initial biofilm formation. The use of AgNP based films that have been synthesised using a novel low-cost, low-temperature and highly upscalable method is demonstrated as a promising solution for the deployment of silver as an effective sacrifical antimicrobial coating to counter the formation of potentially hazardous Gram negative biofilms.

Published
2018
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9. Control of complex quantum structures in droplet epitaxy

Author

Manus Hayne, Alexander J. Robson, Ana M. Sanchez, Joshua Michael Allen Chawner, P. D. Hodgson, Qiandong Zhuang, and Yu-Chen Chang

Subjects
010302 applied physics, Materials science, Photon, Photoluminescence, Annealing (metallurgy), Superlattice, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Epitaxy, 01 natural sciences, Molecular physics, Electronic, Optical and Magnetic Materials, Condensed Matter::Materials Science, Quantum dot, 0103 physical sciences, Materials Chemistry, Electrical and Electronic Engineering, 0210 nano-technology, Quantum, Molecular beam epitaxy
Abstract

We report the controllable growth of GaAs quantum complexes in droplet molecular-beam epitaxy, and the optical properties of self-assembled Alalt;subagt;xalt;/subagt;Gaalt;subagt;1-xalt;/subagt;As quantum rings embedded in a superlattice. We found that Ga droplets on a GaAs substrate can retain their geometry up to a maximum temperature of 490alt;supagt;alt;/supagt;C during post-growth annealing, with an optimal temperature of 320alt;supagt;alt;/supagt;C for creating uniform and symmetric droplets. Through controlling only the crystallisation temperature under Asalt;subagt;4alt;/subagt; in the range of 450alt;supagt;alt;/supagt;C to 580alt;supagt;alt;/supagt;C, we can reliably control diffusion, adsorption and etching rates to produce various GaAs quantum complexes such as quantum dots, dot pairs and nanoholes. Alalt;subagt;xalt;/subagt;Gaalt;subagt;1-xalt;/subagt;As quantum rings are also realised within these temperatures via the adjustment of As beam equivalent pressure. We found that crystallisation using Asalt;subagt;2alt;/subagt; molecules in the place of Asalt;subagt;4alt;/subagt; creates smaller diameter quantum rings at higher density. The photoluminescence of Asalt;subagt;2alt;/subagt; grown Alalt;subagt;xalt;/subagt;Gaalt;subagt;1-xalt;/subagt;As quantum rings embedded in a superlattice shows a dominant emission from the quantum rings at elevated temperatures. This observation reveals the properties of the quantum ring carrier confinement and their potential application as efficient photon emitters.

Published
2019
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10. Mid-infrared type-II InAs/InAsSb quantum wells integrated on silicon

Author

Anthony Krier, P. D. Hodgson, Qi Lu, Adam P. Craig, Andrew R. J. Marshall, Peter J. Carrington, E. Repiso, Richard Beanland, Evangelia Delli, and Matthew Bentley

Subjects
010302 applied physics, Photoluminescence, Materials science, Physics and Astronomy (miscellaneous), Silicon, business.industry, Superlattice, chemistry.chemical_element, 02 engineering and technology, Substrate (electronics), 021001 nanoscience & nanotechnology, 01 natural sciences, Semiconductor, chemistry, 0103 physical sciences, Optoelectronics, Spontaneous emission, Dislocation, 0210 nano-technology, business, Quantum well
Abstract

Direct integration of III–V semiconductor light sources on silicon is an essential step toward the development of portable, on-chip infrared sensor systems. Driven by the presence of characteristic molecular fingerprints in the mid-infrared (MIR) spectral region, such systems may have a wide range of applications in infrared imaging, gas sensing, and medical diagnostics. This paper reports on the integration of an InAs virtual substrate and high crystalline quality InAs/InAsSb multi-quantum wells on Si using a three-stage InAs/GaSb/Si buffer layer. It is shown that the InAs/GaSb interface demonstrates a strong dislocation filtering effect. A series of strained AlSb/InAs dislocation filter superlattices was also used, resulting in a low surface dislocation density of approximately 4 × 107 cm−2. The InAs/InAsSb wells exhibited a strong photoluminescence signal at elevated temperatures. Analysis of these results indicates that radiative recombination is the dominant recombination mechanism, making this structure promising for fabricating MIR Si-based sensor systems.

Published
2020
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11. Mid-infrared InAs/InAsSb superlattice nBn photodetector monolithically integrated onto silicon

Author

Richard Beanland, Adam P. Craig, Peter J. Carrington, Qi Lu, Anthony Krier, Jonathan P. Hayton, E. Repiso, Andrew R. J. Marshall, Veronica Letka, P. D. Hodgson, and Evangelia Delli

Subjects
Silicon photonics, Materials science, Silicon, business.industry, chemistry.chemical_element, Photodetector, 02 engineering and technology, Specific detectivity, 021001 nanoscience & nanotechnology, Epitaxy, 01 natural sciences, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, 010309 optics, Responsivity, chemistry, 0103 physical sciences, Optoelectronics, Electrical and Electronic Engineering, Photonics, 0210 nano-technology, business, QC, Biotechnology, Dark current
Abstract

Mid-infrared (MIR) silicon photonics holds the potential for realizing next generation ultracompact spectroscopic systems for applications in gas sensing, defense, and medical diagnostics. The direct epitaxial growth of antimonide-based compound semiconductors on silicon provides a promising approach for extending the wavelength of silicon photonics to the longer infrared range. This paper reports on the fabrication of a high performance MIR photodetector directly grown onto silicon by molecular beam epitaxy. The device exhibited an extended cutoff wavelength at ∼5.5 μm and a dark current density of 1.4 × 10–2 A/cm2 under 100 mV reverse bias at 200 K. A responsivity of 0.88 A/W and a specific detectivity in the order of 1.5 × 1010 Jones was measured at 200 K under 100 mV reverse bias operation. These results were achieved through the development of an innovative structure which incorporates a type-II InAs/InAsSb superlattice-based barrier nBn photodetector grown on a GaSb-on-silicon buffer layer. The difficulties in growing GaSb directly on silicon were overcome using a novel growth procedure consisting of an efficient AlSb interfacial misfit array, a two-step growth temperature procedure and dislocation filters resulting in a low defect density, antiphase domain free GaSb epitaxial layer on silicon. This work demonstrates that complex superlattice-based MIR photodetectors can be directly integrated onto a Si platform, which provides a pathway toward the realization of new, high performance, large area focal plane arrays and mid-infrared integrated photonic circuits.

Published
2019

12. A detailed comparison of measured and simulated optical properties of a short-period GaAs/AlxGa1−xAs distributed Bragg reflector

Author

Manus Hayne, P. D. Hodgson, Benjamin Grew, Alexander J. Robson, Tom Wilson, and Charles P. Jackson

Subjects
010302 applied physics, X-ray absorption spectroscopy, Materials science, business.industry, Band gap, 02 engineering and technology, Substrate (electronics), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Distributed Bragg reflector, 01 natural sciences, Electronic, Optical and Magnetic Materials, Wavelength, Amplitude, 0103 physical sciences, Materials Chemistry, Optoelectronics, Electrical and Electronic Engineering, 0210 nano-technology, business, Absorption (electromagnetic radiation), Energy (signal processing)
Abstract

A 6-period GaAs/Al0.9Ga0.1As distributed Bragg reflector (DBR) has been grown and its optical properties have been both measured and simulated. Incremental improvements were made to the simulation, allowing it to account for internal consistency error, incorrect layer thicknesses, and absorption due to substrate doping to improve simulation accuracy. A compositional depth profile using secondary-ion mass spectrometry (SIMS) has been taken and shows that the Al fraction averages 88.0% ± 0.3%. It is found that the amplitude of the transmission is significantly affected by absorption in the n-doped GaAs substrate, even though the energy of the transmitted light is well below the GaAs band gap. The wavelength of the features in the transmission spectrum are mostly affected by DBR layer thicknesses. On the other hand, the transmission spectrum is found to be relatively tolerant to changes to Al fraction.

Published
2020
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13. Fighting talk: Organisational discourses of the conflict over raptors and grouse moor management in Scotland

Author

Stephen M. Redpath, Isla D. Hodgson, Juliette Young, and Anke Fischer

Subjects
0106 biological sciences, Discourse analysis, Geography, Planning and Development, 0211 other engineering and technologies, 02 engineering and technology, Management, Monitoring, Policy and Law, Public administration, 010603 evolutionary biology, 01 natural sciences, Ecology and Environment, Stakeholders, Political science, Social media, Wildlife management, Land tenure, Nature and Landscape Conservation, Wildlife conservation, Land use, Raptors, Corporate governance, 021107 urban & regional planning, Forestry, Natural resource, Conservation conflicts, Organisations, Conflict mitigation
Abstract

Conflict is currently one of the greatest challenges facing wildlife conservation. Whilst conflicts may first appear to concern wildlife, they are often embedded within wider debates surrounding land use, land ownership, and the governance of natural resources. Disputes over the impacts or management of a species therefore become symbols for conflicts that are fundamentally between the divergent interests and values of the people involved. NGOs representing the interests of local stakeholders can become actors within the conflict, often utilising publicly available platforms such as websites and social media in an attempt to influence over others and gain a dominant foothold in the debate. Here, we examined discourses of organisations in relation to a contentious and high-profile case of conflict in Scotland, that occurs between interests of raptor conservation and grouse moor management. News articles sourced from the websites of six organisations – identified as key voices in the debate – were subjected to discourse analysis. 36 storylines were drawn from common phrases and statements within the text. Storylines demonstrated a clear divide in the discourse; organisations differed not only in their portrayal of central issues, but also in their representation of other actors. Discourses were strategic; organisations interpreted the situation in ways that either supported their own interests and agendas, or damaged the image of opposing parties. We argue that discursive contestation at this level could be damaging to mitigation efforts – widening barriers between stakeholders and risking already fragile relationships. This in turn reduces the likelihood of consensus and impacts on successful decision-making and policy implementation. We conclude that conflict managers should be aware of the contestation between high-profile actors, and the ramifications this may have for conflict mitigation processes. An understanding of what constitutes these discourses should therefore be used as a foundation to improve dialogue and collaborative management.

Published
2018

14. Measurement of the lifetime of tau-lepton

Author

U. Mjoernmark, Edoardo Castelli, F. Pierre, P. Allen, G. W. Van Apeldoorn, R. J. Apsimon, L. Ventura, V. Ruhlmann, Roland Horisberger, L. Bugge, D. Z. Toet, G. Hamel de Monchenault, Andrey Korytov, G. Ekspong, Itzhak Roditi, Gueorgui Chelkov, Pierre Juillot, M. De Beer, M. Bonesini, Y. Sacquin, Josef Strauss, M.A. Lopez Aguera, Francesca Romana Cavallo, Hans Muller, B. Koene, J.A.M.A. Buytaert, W. Venus, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, Mitchell Wayne, M. S. Bilenky, G. Tristam, L.J. Carroll, W. Bartl, R. Pain, P. N. Bogolubov, M. J. Bates, J. A. Valls Ferrer, Giovanni Darbo, Christine Kourkoumelis, P. Siegrist, V. V. Lapin, N. Crosland, S. Simonetti, M. Begalli, E. Dahl-Jensen, Paolo Morettini, J. G. Loken, C. De Clercq, Klaus Hamacher, J. P. Laugier, Natale Demaria, R. Lucock, M. Richardson, G. Meola, Toralf Bernhard Skaali, M. Boratav, D. Gamba, P. Beilliere, M. Battaglia, T. Bolognese, W. J. Murray, R. Strub, J-C. Marin, Spyros Tzamarias, G. Cosme, A. Perrotta, G. Borisov, George Kalkanis, P. B. Renton, G. Voulgaris, M. Pimenta, B. A. Khomenko, M. Baubillier, V. Canale, S. Gumenyuk, R. A. Brenner, Stavros Maltezos, M. Bonapart, O. Barring, Y. Dufour, P. D. Dauncey, Sandor Czellar, D. C. Fries, Patrick Jarry, S. J. Alvsvaag, C. Vander Velde, N. De Groot, G. Rinaudo, G. Sette, A. Elliot Peisert, A. Stocchi, Francesco Navarria, J. Zúñiga, P. Astier, W. Bonivento, P. Weilhammer, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, G. Vegni, N. Brummer, J. Bjarne, P. O. Hulth, T. Tabarelli, P. Van Dam, M. Davenport, G. Polok, A. Ruiz, Winfried Mitaroff, E. Lieb, P. Antilogus, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, G. Matthiae, Marta Calvi, P. Delpierre, I. Herbst, M. Matveev, R. Mc Nulty, I. Lippi, W. Kucewicz, E. K. Johansson, J. Pyyhtia, Geoffrey Smith, D. Johnson, Louis Lyons, W. Klempt, Renato Turchetta, H. De Boeck, S. Tavernier, G. Wormser, E. Daubie, G. E. Theodosiou, Mogens Dam, D. Fassouliotis, Ariella Cattai, F. Couchot, M. Kopf, M. Tyndel, S. C. Blyth, O. Pingot, G. Wilkinson, M.D.M. De Fez Laso, Juan Fuster, Jacques Lemonne, J. Sanchez, C. Bosio, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, T. Kreuzberger, J. Derkaoui, S. Braibant, S. Dagoret, F. Stichelbaut, D. Zavrtanik, A. Tilquin, S. O. Holmgren, L. S. Vertogradov, J. Maillard, M. T. Trainor, P. Vaz, R. Sosnowski, O. Ullaland, Leif J. Jönsson, G. Myatt, F. Adami, V. G. Timofeev, A. G. Frodesen, Pawel Jalocha, Barry King, G. Smadja, L. Mathis, D. Husson, Ugo Gasparini, A. Pullia, J.M. Gago, D. Bertrand, J. Timmermans, I. A. Tyapkin, B.D. Hyams, T. S. Spassoff, Torsten Paul Ake Åkesson, Demetrios Loukas, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, U. Trevisan, H. Furstenau, R. Frühwirth, L. O. Eek, R. C. Shellard, Josef Hrubec, A. M. Segar, A. G. Olshevski, B. Boštjančič, V. Perevozchikov, Theodora Papadopoulou, B. Korzen, Jon Christopher Wikne, C. Defoix, E. I. Rosenberg, A. Campion, S. Volponi, B. Dalmagne, F. Fulda-Quenzer, H. P. Borner, Stefan Schael, A. Lipniacka, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Tiziano Camporesi, A.J. Camacho Rozas, Abdenour Lounis, M.-H. Gros, Laurent Chevalier, M. Fernandez Alonso, D. Radojicic, V. Obraztsov, Jan Ridky, P. Folegati, Z. Hajduk, K. Kurvinen, Maciej Górski, W. Ruckstuhl, Borge Svane Nielsen, J. J. Lozano, Guido Barbiellini, R. Zukanovich Funchal, B. Franek, H. Wahlen, Ariel Goobar, E. Graziani, P. S. Iversen, F. Fontanelli, Maria Roberta Monge, A. Zalewska, Krzysztof Doroba, N. G. Redaelli, R. Moeller, A. Hakansson, Chiara Meroni, J. H. Koehne, Marco Bozzo, T. Hofmokl, Marek Szczekowski, J. M. Brunet, H. Foeth, Roberto Cirio, I. Roncagliolo, L. K. Resvanis, J. E. Hooper, J. Guy, P. Lutz, W. Krupinski, W. T. Meyer, P. V. Chliapnikov, Tord Ekelof, H. Staeck, D. Benedic, P. Abreu, P. Borgeaud, J. P. Gerber, Tim Adye, E. Rosso, H. Klein, P. Beltran, Peter Kluit, F. Naraghi, P. Frenkiel, K. H. Becks, E. Vallazza, Milos Lokajicek, J. 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Klovning, 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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Subjects
COLLISIONS, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, PAIR PRODUCTION, Electron–positron annihilation, FOS: Physical sciences, Elementary particle, ddc:500.2, 01 natural sciences, 7. Clean energy, Resonance (particle physics), JET FRAGMENTATION, DECAYS, High Energy Physics - Experiment, Nuclear physics, Particle decay, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], SILICON MICROVERTEX DETECTOR, PRECISE MEASUREMENT, Limit (mathematics), QCD ANALYSIS, 010306 general physics, L3 EXPERIMENT, Coupling constant, Physics, Muon, Annihilation, TEST BEAM, E+E-PHYSICS, 010308 nuclear & particles physics, ALPHA(S), High Energy Physics::Phenomenology, Detector, Pair production, SPECTRAL FUNCTIONS, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract

The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in τ τ =293.2 ± 2.0 (stat) ± 1.5 (syst) fs . The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, α s is found to be α s ( m τ 2 ) = 0.319 ± 0.015 (exp) ± 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory).

Published
2015
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15. Antimony based mid-infrared semiconductor materials and devices monolithically grown on silicon substrates

Author

Evangelia Delli, Andrew R. J. Marshall, P. D. Hodgson, E. Repiso, Anthony Krier, Peter J. Carrington, and Adam P. Craig

Subjects
010302 applied physics, Materials science, Silicon, business.industry, Semiconductor materials, Photonic integrated circuit, Mid infrared, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, Epitaxy, 01 natural sciences, Thermal conductivity, Antimony, chemistry, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business, Molecular beam epitaxy
Abstract

III-V semiconductor heterostructures grown on GaSb and InAs substrates are widely used to produce high performance optoelectronic devices operating in the technologically important mid-infrared spectral range. However, these substrates are expensive, only available in small sizes and have low thermal conductivity. Integration of III-Vs onto silicon substrates offers the opportunity to overcome these shortcomings and opens the possibility of new applications in lab-on-chip MIR photonic integrated circuits. However, the unusual III-V/Si interface and large lattice mismatch presents challenges to epitaxial growth. Here, we report on novel techniques employed to grow high quality Sb-based optoelectronic devices on silicon using molecular beam epitaxy.

Published
2017
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16. Surface Treatments to Modulate Bioadhesion

Author

Jonathan Lawrence, David Waugh, C. Toccaceli, Simon D. Hodgson, Alice R. Gillett, and Chi-Ho Ng

Subjects
Surface (mathematics), Materials science, Chemical engineering, Biological adhesion, 02 engineering and technology, Wetting, Surface engineering, 010402 general chemistry, 021001 nanoscience & nanotechnology, 0210 nano-technology, 01 natural sciences, 0104 chemical sciences
Published
2017
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17. Measurement of the partial width of the decay of the Z0 into charm quark pairs

Author

U. Kruener-Marquis, M. L. Turluer, D. Reid, D. Bertrand, P. Siegrist, P. Vaz, I. Lippi, J-C. Marin, P. Lutz, E. K. Johansson, D. Bollini, P. B. Renton, W. S. C. Williams, Spyros Tzamarias, P. Poropat, Andromachi Tsirou, P. V. Chliapnikov, Andre Augustinus, A. Wehr, Edoardo Castelli, D. Radojicic, E. Menichetti, E. Fokitis, Paula Eerola, D.N. Edwards, S. Biagi, Tiziano Rovelli, M. Cresti, S. Gawne, Wolfgang Adam, M. Davenport, J. Pyyhtia, R. Keranen, L. Paper, E. I. Rosenberg, P. Frenkiel, A. Passeri, V.A. Uvarov, A. M. Segar, V. Nikolaenko, G. Trustram, Tord Ekelof, H. Staeck, P. Kapusta, G. E. Kalmus, M. Kostrikov, F. Grard, V. Vrba, S. Squarcia, F. Cao, E. N. Gazis, B. Korzen, R.B. Kadyrov, Bengt Lund-Jensen, G. Ekspong, Giovanni Darbo, F. Couchot, A. A. Rademakers, W. T. Meyer, Anthony Lincoln Read, A. P. Ostankov, J. Bjarne, H. Palka, Itzhak Roditi, Natale Demaria, Gueorgui Chelkov, A. Ruiz, G. R. Wilkinson, C. Vander Velde, Wojciech Kucewicz, L. Tortora, T. Tuuva, J. N. Jackson, S. O. Holmgren, M. Szczekowski, G. Galeazzi, A. Ferrer, L. S. Vertogradov, Borge Svane Nielsen, H. Burmeister, F. Barao, Roberto Cirio, L. K. Resvanis, F. Simonetto, E. Lieb, J. J. Lozano, M. H. Gros, U. Nnau-Lorzen, M. S. Bilenky, S. Ferroni, P. Bambade, K. Kurvinen, P.S.L. Booth, J. Lindgren, L.J. Carroll, W. Klempt, L. Lyons, O. Doll, Krzysztof Doroba, George Kalkanis, Chiara Meroni, Robert S. Brown, Tiziano Camporesi, Klaus Hamacher, M. Bonapart, Massimo Caccia, J. G. Loken, S. D. Hodgson, C. Bricman, A. Pullia, M. I. Laakso, L. O. Eek, R. C. Shellard, Josef Hrubec, M. A. Winter, S. Simonetti, J. Maillard, T. A. Filippas, T. Hofmokl, S. Gumenyuk, R. A. Brenner, Ariella Cattai, P. Ronschese, D. Benedic, E. Higon, R. Seufert, F. Scuri, J. Sanxhez, A. M. Wetherell, Th. D. Papadopoulou, J. H. Bibby, Pierre Billoir, G. Cosme, A. Baroncelli, Marco Bozzo, M. J. Bates, B. De Lotto, Guenakh Mitselmakher, G. Crosetti, S. J. Alvsvaag, Leif J. Jönsson, Ugo Gasparini, D. C. Fries, P. Weilhammer, I. Belokopytov, D. Husson, I. A. Tyapkin, T. S. Spassoff, A. Campion, M. Pegoraro, M. Pernicka, G. Lenzen, R. Strub, J. E. Campagne, M. Koratzinos, L. Lanceri, Paul Baillon, E. C. Katsoufis, G. Myatt, E. Graziani, Mikko Voutilainen, P. S. Iversen, F. Fontanelli, H. Furstenau, E. Sanchis, A. Lopez-Fernandez, Marta Calvi, L. Di Ciaccio, C. Defoix, P. Szymanski, A. Firestone, N. Redaelli, J. Marco, S. Ueberschaer, F. Waldner, H. Wahlen, Ariel Goobar, Ugo Amaldi, H. Forsbach, J. W. Lamsa, Guido Barbiellini, H. Herr, L. G. Tkatchev, Jose M. Benlloch, A. Grant, Mogens Dam, C. Lambropoulos, Patrick Jarry, G. Rinaudo, Clara Troncon, J. Guy, W. De Boer, Geoffrey Smith, E.N. Tsyganov, J. H. Wickens, W. Dulinski, Jose Luis Contreras, A. Fenyuk, J. H. Koehne, M. Pimenta, K. Woschnagg, B. A. Khomenko, A. De Min, A. Stocchi, Joao Varela, Hans Dijkstra, A. Markou, T. Buran, N. De Groot, P. Beltran, M. Vollmer, P. Delpierre, Tim Adye, W. D. Apel, B. Franek, P. Kluit, M. Mazzucato, U. Rossi, C. Walck, Paolo Giacomelli, J. E. Hooper, Francesco Navarria, L. Vibert, K. H. Becks, G. W. Van Apeldoorn, M. P. Clara, G. D. Alekseev, P. Negri, J. M. Brunet, M. Jonker, Pierre Astier, J. Zúñiga, M. Boratay, P. Abreu, P. Borgeaud, R. Sekulin, A. Zalewska, M. Baubillier, K. D. Brand, E. Vallazza, L. Ventura, G. Hamel de Monchenault, H. Schneider, Göran Jarlskog, Jan Ridky, L. Mathis, T. Moa, M.A. Lopez Aguera, M. Mc Cubbin, K. Hultqvist, H. Borner, C. Pinori, B.D. Hyams, Mikael Berggren, S. Ragazzi, A. Sebastia, Francesca Romana Cavallo, Josef Strauss, E. Lillethum, A. Letessier-Selvon, Mitchell Wayne, P. Zalewski, V. Lepeltier, G. Kantarjian, B. Grossetete, Allan Hallgren, Vegni, Giovanni Valenti, F. Udo, W. Venus, G. Maehlum, I. Herbst, V. Ruhlmann, Paolo Checchia, Jacques Lemonne, J. Velasco, E. Rosso, H. Klein, Ph. Gavillet, V. V. Lapin, Hans Muller, Fares Djama, V. Canale, N. K. Visnevskiy, C. De Clercq, F. Kapusta, L. Bugge, J. Drees, P. D. Dauncey, N. J. Kjaer, A. J. Camacho Rozas, G. Sette, M. Sessa, Maria Elena Pol, G. Leder, Alexander Vodopyanov, B. Åsman, G. Zumerle, L. Cerrito, F. Bianchi, P. N. Bogolubov, F. Ledroit, Kjell Fransson, S. Katsanevas, P. Privitera, D. Z. Toet, T. Kreuzberger, D. Vilanova, Christine Kourkoumelis, E. Dahl-Jensen, M. Schaeffer, D. Y. Bardin, P. Beilliere, D. Crennell, W. Van Doninck, P. N. Ratoff, Andrea Perrotta, F. Alted, J. Dolbeau, F. Mandl, G. Smadja, A. Klovning, Daniel Treille, Paul Allen, R. Lucock, R. Sosnowski, Olga Botner, Krzysztof Korcyl, A. Tilquin, Jorge-Armando Benitez Garcia, U. Mjoernmark, R. Gokieli, B. W. Heck, P.I. Zarubin, J. J. Hernandez, J. Cuevas Maestro, P. O. Hulth, P. Yepes, M. Regler, C. J. Beeston, J. Krolikowski, N. Magnussen, P. Herquet, H. De Boeck, V. Falaleev, E. Daubie, P. Laurikainen, M. De Beer, M. R. Monge, B. Jean-Marie, S. Braibant, S. Tavernier, M. Tyndel, M. Bonesini, J. A. M. A. Buytaert, Y. Gouz, N. Crosland, G. Gopal, Y. Sacquin, Andrey Korytov, R. Llosa, H. Mueller, J.M. Gago, H. Foeth, D. Wormald, R. Contri, M. Fernandez Alonso, T. Bolognese, E. J. Sanchez, R. Orava, U. Trevisan, R. Zukanovich Funchal, M. Szeptycka, W. Bartl, J. Wikne, N. Smirnov, V. Perevozchikov, J. A. Valls Ferrer, M. Turala, Manolis Dris, J. P. Gerber, Mario Sannino, K. W. Glitza, P. Roudeau, G. Skjevling, J. P. Laugier, F. Stichelbaut, A. De Angelis, D. Delikaris, R. Dzhelyadin, D. Gamba, C. Stanescu, R. Lauhakangas, N. van Eijndhoven, E. Zevgolatakos, G. Voulgaris, F. Verbeure, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, Marcos Dracos, B. Bouquet, Juan Fuster, M. Kopf, B. Dalmagne, Laurent Chevalier, R. Zitoun, F. Fulda-Quenzer, P. Kokkinias, Milos Lokajicek, J. Kesteman, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, O. Pingot, V. Gracco, H. Saarikko, Pavlos Ioannou, A.K. Topphol, Klaus Moenig, M. A. Houlden, G. Matthiae, W. A. Mitaroff, F. Richard, M. Hahn, F. Naraghi, V. G. Timofeev, S. Almehed, K. Spang, F. Hahn, C. Matteuzzi, E. Lillestol, G. Grosdidier, Alessandra Romero, I.A. Gritsaenko, J. E. Augustin, A. Zaitsev, S. Haider, A. N. Sissakian, Claudia J. Stubenrauch, Eleuterio Spiriti, C. Caso, H. B. Crawley, P. Morettini, Pierre Juillot, B. Koene, A.N. Diddens, D. Loukas, M. Crozon, R. Pain, V. Obraztsov, O. Barring, S. Dagoret, P. Van Dam, Renato Turchetta, C. De La Vaissiere, G. Zhang, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, P. Branchini, G. E. Theodosiou, M.D.M. De Fez Laso, R. Moeller, A. Pinsent, N. Yamdagni, M. T. Trainor, Sandor Czellar, N. Brummer, G. Wormser, Pieter David, W. H. Range, W. Krupinski, S. Maltezos, H. J. Hilke, J. Skeens, G. Stavropoulos, V. Chorowicz, R. Mc Kay, N. I. Zimim, F. Adami, Jürgen H. Werner, Philippe Charpentier, Francisco Matorras, T. B. Skaali, F. J. Harris, A. G. Frodesen, Z. Hajduk, Maciej Górski, A. Hakansson, C. Bosio, E. Vlasov, R. Holmes, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo

Subjects
Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, Meson, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, Charm quark, Standard Model, law.invention, Nuclear physics, PHYSICS, ENERGY, Pion, D-STAR-MESON, CROSS-SECTION, law, 0103 physical sciences, 010306 general physics, Collider, Nuclear Experiment, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

A determination of the partial width Γc̄ of the Z0 boson into charm quark pairs is presented, based on a total sample of 36 900 Z0 hadronic decays measured with the DELPHI detector at the LEP collider. The production rate of cc events is derived from the inclusive analysis of charged pions coming from the decay of charmed meson D*+-→D0π+ and D*-→D̄0π- where the π± is constrained by kinematics to have a low pT with respect to the jet axis. The probability to procedure these π± from D*± decay in cc events is taken to be 0.31±0.05 as measured at √S = 10.55 GeV. The measured relative partial width Γ∞/Γh = 0.162± 0.030(stat.) ± 0.050(syst.) is in good agreement with the standard model value of 0.171. Together with our previous measurement of the total hadronic width Γh this implies Γ∞ = 282 ± 53 (stat.) ± 88 (syst.) MeV., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2016
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18. BOSE-EINSTEIN CORRELATIONS IN THE HADRONIC DECAYS OF THE Z(0)

Author

Jorge-Armando Benitez Garcia, D. J. Holthuizen, T. J. V. Bowcock, K. Furnival, F. Simonetto, B. A. Della Riccia, G. D. Alekseev, E. Torassa, Wolfgang Adam, G. Leder, B. Åsman, Itzhak Roditi, C. Gaspar, M. Mc Cubbin, K. Hultqvist, Maria Elena Pol, S. Katsanevas, Juan Fuster, M. T. Trainor, Yu. Belokopytov, D. Crennell, F. Mandl, G. Smadja, R. Contri, M. Karlsson, M. Jonker, S. Schael, S. Ueberschaer, T. A. Filippas, R. Lauhakangas, Ph. Charpentier, C. Kourkoumelis, D. Vilanova, M. Pimenta, B. A. Khomenko, M. Regler, Klaus Hamacher, H. Herr, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, Jelena Krstic, Ugo Gasparini, B. Franek, R. Ehret, F. Couchot, I. Lippi, P. Siegrist, E.N. Tsyganov, J. H. Wickens, B. Muryn, Marco Paganoni, Jose Luis Contreras, W. De Boer, C. Vander Velde, L. Vitale, M. Donszelmann, D. Radojicic, S. J. Alvsvaag, E. Agasi, L. Mathis, M. Los, V. Lepeltier, P. Lutz, T. Maron, Tim Adye, Francesca Romana Cavallo, J. P. Engel, K. A. J. Forbes, J. Bjarne, G. Ekspon, Mitchell Wayne, M. V. Castillo Gimenez, S. D. Hodgson, R. Gokieli, M. S. Bilenky, Andre Tilquin, L.J. Carroll, M. Turala, Spyros Tzamarias, O. Tchikilev, A. G. Olshevski, Paolo Checchia, G. Vegni, Ph. Gavillet, B. Dalmagne, Laurent Chevalier, L. Chaussard, A. Chan, C. Lambropoulos, Ugo Amaldi, E. Zevgolatakos, P. Antilogus, P. E. S. Nilsen, J. T.M. Chrin, E. Anassontzis, G. Damgaard, P. Borgeaud, U. Kruener-Marquis, V. V. Lapin, M. Michelotto, Tord Ekelof, H. Staeck, Mogens Dam, Giovanni Crosetti, Fabrizio Scuri, W.S.C. Williams, P. Abreu, T. Buran, M. Tyndel, O. Pingot, F. Hahn, Rupert Leitner, Th. D. Papadopoulou, Guenakh Mitselmakher, V. Ruhlmann, V. Gracco, G. Matthiae, S. Rossi, C. De Clercq, F. Cao, Maria Roberta Monge, Dietrich Liko, A. Zalewska, Claire Bourdarios, Paolo Ronchese, W. J. Murray, M. Battaglia, W. Van Doninck, Lucio Cerrito, F. Ledroit, G. Stavropoulos, V. Chorowicz, G. Rinaudo, G. Galeazzi, P. Privitera, B. Loerstad, A. De Angelis, G. Lenzen, Milos Lokajicek, Jacques Lemonne, R. Strub, Juan Abel Barrio, Borge Svane Nielsen, V. Bocci, A. Tomaradze, J. Kesteman, N. J. Kjaer, J. J. Lozano, R. Lindner, Martino Margoni, E. Fokitis, H. Mueller, Marco Sessa, A. De Min, Joao Varela, I. Siccama, Piotr Zalewski, G. Sajot, S. Marti, P. Yepes, F. Stichelbaut, Cristian Stanescu, P. Branchini, Krzysztof Doroba, H. Schneider, R. Mc Kay, A. Andreazza, R. Zuberi, Alastair Grant, S. O. Holmgren, L. S. Vertogradov, J. P. Gerber, C. O. Higgins, H. Burmeister, M. Bozzo, J. J. Gomez Y Cadenas, Andrea Perrotta, G. Sette, A. Elliot Peisert, Jan Buytaert, D. Benedic, Peter Kluit, Maciej Górski, I. A. Tyapkin, O. Kouznetsov, D. Isenhower, V.A. Uvarov, Klaus Moenig, M. A. Houlden, Olga Botner, Krzysztof Korcyl, L. Tortora, T. S. Spassoff, R. A. Brenner, G. Myatt, L. Bugge, G. Tristram, Paula Eerola, Daniel Treille, W. Da Silva, W. A. Mitaroff, A.N. Sisakian, Carmen García, Robert S. Brown, A. J. Camacho Rozas, B. Nijjhar, D. Z. Toet, A. Klovning, D. Y. Bardin, Mario Sannino, G. Hamel de Monchenault, G. E. Kalmus, J. N. Jackson, M. A. Lopez Aguera, B. Bouquet, R. Mc Nulty, K. Woschnagg, P. Herquet, A. Firestone, H. De Boeck, R. Keranen, B. Jean-Marie, F. J. Harris, Josef Strauss, S. Braibant, V. Chabaud, W. Venus, A. Maltezos, P. Niss, S. Squarcia, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, P. Kokkinias, R. Orava, Fernand Grard, M. L. Turluer, Gabriella Sciolla, D. Reid, Gianni Zumerle, R. Holmes, H. Saarikko, T. Tabarelli, H. Foeth, E. Lieb, R. J. Apsimon, J. E. Hooper, Carlos Lacasta, T. L. Hessing, A. M. Segar, J. Ridky, D. Zavrtanik, Krzysztof A. Rybicki, D. Wormald, Francisco Matorras, Manolis Dris, P. Roudeau, N. Yamdagni, F. Richard, M. Hahn, S. Almehed, M. Pegoraro, Javier Sánchez, J. Maillard, I. Kronkvist, M. Mazzucato, Paul Allen, P. S. Iversen, C. Matteuzzi, P. H. Kramer, M. Vollmer, U. Rossi, Paolo Giacomelli, G. Wormser, S. Delorme, Ariella Cattai, M. Zito, F. Fontanelli, M. Voutilainen, S. Volponi, Pierre Billoir, Nikita Smirnov, Chiara Meroni, F. Carena, M. Szczekowski, P. Vaz, P. Poropat, A. Pullia, Andromachi Tsirou, E. Lillethun, M. Crozon, J. Lindgren, W. T. Meyer, M. Fernandez Alonso, S. Vlassopoulos, U. Mjoernmark, R. Moeller, Andrey Korytov, P. Grosse-Wiesmann, P. Collins, Leif J. Jönsson, B. Boštjančič, V. Perevozchikov, B. Grossetete, Allan Hallgren, V. Obraztsov, Andre Augustinus, A. Wehr, M. Richardson, A. Ruiz, H. Furstenau, C.J. Beeston, Antonio Baroncelli, Roberto Cirio, L. K. Resvanis, M. De Beer, D. Delikaris, Tiziano Camporesi, W. Klempt, J. Dolbeau, M. A E Schyns, P. Bambade, U. Haedinger, R. Zukanovich Funchal, T. Todorov, I. Roncagliolo, H. Palka, G. Skjevling, G. Cosme, G. Barbiellini, J. E. Augustin, M. Chapkin, T. Pettersen, Eugene P. Gross, T. Hofmokl, J. Werner, U. Trevisan, Vaclav Vrba, Natale Demaria, P. F. Honore, Patrick Jarry, P.S.L. Booth, O. Toker, F. Barao, M. Pernicka, M. Bonesini, N. G. Redaelli, Massimo Caccia, I. Hietanen, E. Dahl-Jensen, Vladimir Nikolaenko, G. Borisov, T. A. Fearnley, C. Troncon, Charles Bricman, W. D. Apel, Hans Dijkstra, E. Rosso, H. Klein, J. C. Marin, Daniel Bloch, J. Salt, Jan Krolikowski, N. N. Khovanski, E. Higon, R. Seufert, W. Bartl, Y. Sacquin, Jesus Marco, P. Juillot, A. Lopez-Fernandez, K. Osterberg, Ahmimed Ouraou, V.M. Golovatyuk, H. Wahlen, Ariel Goobar, S. Bosworth, V. Kostioukhine, M. Baubillier, P. Frenkiel, P. Ioannou, J. Straver, Eleuterio Spiriti, J. A. Valls Ferrer, M. J. Bates, J. H. Koehne, H. Briand, A. M. Wetherell, F. Waldner, K. Kulka, Toralf Bernhard Skaali, C. Caso, L. Lanceri, Tuure Tuuva, A. M. Zaitsev, Alexander Vodopyanov, J. P. Laugier, D. Gamba, J. J. Hernandez, G. Voulgaris, P. O. Hulth, F. Bianchi, C. Walck, J. M. Levy, M. Feindt, P. Negri, F. Verbeure, F. Kapusta, H. P. Borner, E. I. Rosenberg, M. P. Clara, K. H. Becks, Stefaan Tavernier, R. Barate, P. Delpierre, E. Daubie, E. Vallazza, Göran Jarlskog, R. Sosnowski, F. Naraghi, V. G. Timofeev, A. Letessier-Selvon, A. Daum, E. Karvelas, H. B. Crawley, G. P. Gopal, A. G. Frodesen, K. D. Brand, J. Pennanen, J. Cuevas Maestro, N. I. Zimin, S. Ragazzi, M. Kopf, E. K. Johansson, C. Bosio, D. Bertrand, Steinar Stapnes, G. W. Van Apeldoorn, P. Weilhammer, J. W. Lamsa, J. Chauveau, W. Bonivento, E. Cortina, W. Ruckstuhl, R. Zitoun, Jon Christopher Wikne, C. Defoix, F. Fulda-Quenzer, K. Kurvinen, E. Castelli, L. Ventura, P. Beltran, G. Grosdidier, Ivan Mikulec, E. Graziani, William Trischuk, Y. Lemoigne, J. Drees, J. M. Brunet, P. D. Dauncey, A. Passeri, M. Weierstall, P. N. Bogolubov, Evangelos Gazis, G. Meola, A. Markou, George Kalkanis, P. B. Renton, Louis Lyons, D. C. Fries, E. C. Katsoufis, Pieter David, Marta Calvi, Vincenzo Canale, Geoffrey Smith, N. Brumner, R. Sekulin, W. Krupinski, G. A. Chelkov, M. Dracos, Demetrios Loukas, G. Valenti, T. Moa, G. Maehlum, D. Fassouliotis, A. Romero, F. Pierre, S. Haider, Fares Djama, A. Ferrer, O. Ullaland, Giovanni Darbo, P. N. Ratoff, D. R. Johnson, P. Szymanski, S. Simonetti, H. J. Hilke, M. Begalli, M. A. Winter, T. Bolognese, A. Petrolini, Y. Dufour, T. Henkes, B. De Lotto, Sandor Czellar, Evgueni Vlasov, G. Polok, G. E. Theodosiou, L. G. Tkatchev, G. Wilkinson, M.D.M. De Fez Laso, M. Berggren, Tiziano Rovelli, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, C. Ronnqvist, A. P. Ostankov, Julien Guy, Luc Pape, Anna Lipniacka, S. Dagoret, P. Van Dam, C. De La Vaissiere, G. Zhang, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, S. L. Blyth, P. Morettini, B. Koene, J. G. Loken, P. Beilliere, R. Pain, W. Hao, O. Barring, Z. Hajduk, M. Davenport, A. Hakansson, P. V. Chliapnikov, Abreu, P, Adam, W, Adye, T, Agasi, E, Alekseev, G, Allen, P, Almehed, S, Alvsvaag, S, Amaldi, U, Anassontzis, E, Andreazza, A, Antilogus, P, Apel, W, Apsimon, R, Åsman, B, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, D, Baroncelli, A, Barring, O, Barrio, J, Bartl, W, Bates, M, Battaglia, M, Baubillier, M, Becks, K, Beeston, C, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Berggren, M, Bertrand, D, Bianchi, F, Bilenky, M, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bocci, V, Bogolubov, P, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P, Borgeaud, P, Borisov, G, Borner, H, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, T, Bozzo, M, Braibant, S, Branchini, P, Brand, K, Brenner, R, Briand, H, Bricman, C, Brown, R, Brumner, N, Brunet, J, Bugge, L, Buran, T, Burmeister, H, Buytaert, J, Caccia, M, Calvi, M, Camacho Rozas, A, Camporesi, T, Canale, V, Cao, F, Carena, F, Carroll, L, Caso, C, Castelli, E, Castillo Gimenez, M, Cattai, A, Cavallo, F, Cerrito, L, Chabaud, V, Chan, A, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G, Chevalier, L, Chliapnikov, P, Chorowicz, V, Chrin, J, Cirio, R, Clara, M, Collins, P, Contreras, J, Contri, R, Cortina, E, Cosme, G, Couchot, F, Crawley, H, Crennell, D, Crosetti, G, Crozon, M, Maestro, J, Czellar, S, Dagoret, S, Dahl-Jensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Daum, A, Dauncey, P, Davenport, M, David, P, Da Silva, W, Defoix, C, Delikaris, D, Della Riccia, B, Delorme, S, Delpierre, P, Demaria, N, De Angelis, A, De Beer, M, De Boeck, H, De Boer, W, De Clercq, C, De Fez Laso, M, De Groot, N, De La Vaissiere, C, De Lotto, B, De Min, A, Dijkstra, H, Di Ciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dufour, Y, Eek, L, Eerola, P, Ehret, R, Ekelof, T, Ekspon, G, Peisert, A, Engel, J, Fassouliotis, D, Fearnley, T, Feindt, M, Alonso, M, Ferrer, A, Filippas, T, Firestone, A, Foeth, H, Fokitis, E, Fontanelli, F, Forbes, K, Franek, B, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Furnival, K, Furstenau, H, Fuster, J, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E, Gerber, J, Giacomelli, P, Gokieli, R, Golovatyuk, V, Gomez Y Cadenas, J, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Grosdidier, G, Gross, E, Grosse-Wiesmann, P, Grossetete, B, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, De Monchenault, G, Hao, W, Harris, F, Henkes, T, Hernandez, J, Herquet, P, Herr, H, Hessing, T, Hietanen, I, Higgins, C, Higon, E, Hilke, H, Hodgson, S, Hofmokl, T, Holmes, R, Holmgren, S, Holthuizen, D, Honore, P, Hooper, J, Houlden, M, Hrubec, J, Hulth, P, Hultqvist, K, Ioannou, P, Isenhower, D, Iversen, P, Jackson, J, Jalocha, P, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E, Keranen, R, Kesteman, J, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klempt, W, Klovning, A, Kluit, P, Koehne, J, Koene, B, Kokkinias, P, Kopf, M, Korcyl, K, Korytov, A, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, P, Krolikowski, J, Kronkvist, I, Krstic, J, Kruener-Marquis, U, Krupinski, W, Kulka, K, Kurvinen, K, Lacasta, C, Lambropoulos, C, Lamsa, J, Lanceri, L, Lapin, V, Laugier, J, Lauhakangas, R, Leder, G, Ledroit, F, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Letessier-Selvon, A, Levy, J, Lieb, E, Liko, D, Lillethun, E, Lindgren, J, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, J, Lopez-Fernandez, A, Lopez Aguera, M, Los, M, Loukas, D, Lozano, J, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maltezos, A, Mandl, F, Marco, J, Margoni, M, Marin, J, Markou, A, Maron, T, Marti, S, Mathis, L, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Meola, G, Meroni, C, Meyer, W, Michelotto, M, Mikulec, I, Mitaroff, W, Mitselmakher, G, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, M, Morettini, P, Mueller, H, Murray, W, Muryn, B, Myatt, G, Naraghi, F, Navarria, F, Negri, P, Nielsen, B, Nijjhar, B, Nikolaenko, V, Nilsen, P, Niss, P, Obraztsov, V, Olshevski, A, Orava, R, Ostankov, A, Osterberg, K, Ouraou, A, Paganoni, M, Pain, R, Palka, H, Papadopoulou, T, Pape, L, Passeri, A, Pegoraro, M, Pennanen, J, Perevozchikov, V, Pernicka, M, Perrotta, A, Petrolini, A, Pettersen, T, Pierre, F, Pimenta, M, Pingot, O, Pol, M, Polok, G, Poropat, P, Privitera, P, Pullia, A, Radojicic, D, Ragazzi, S, Ratoff, P, Read, A, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, E, Rossi, S, Rossi, U, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schael, S, Schneider, H, Schyns, M, Sciolla, G, Scuri, F, Segar, A, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, R, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, A, Skaali, T, Skjevling, G, Smadja, G, Smirnov, N, Smith, G, Sosnowski, R, Spassoff, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Straver, J, Strub, R, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tavernier, S, Tchikilev, O, Theodosiou, G, Tilquin, A, Timmermans, J, Timofeev, V, Tkatchev, L, Todorov, T, Toet, D, Toker, O, Tomaradze, A, Torassa, E, Tortora, L, Trainor, M, Treille, D, Trevisan, U, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, E, Turala, M, Turluer, M, Tuuva, T, Tyapkin, I, Tyndel, M, Tzamarias, S, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Valls Ferrer, J, Velde, C, Van Apeldoorn, G, Van Dam, P, Van Doninck, W, Varela, J, Vaz, P, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Vertogradov, L, Vilanova, D, Vitale, L, Vlasov, E, Vlassopoulos, S, Vodopyanov, A, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Wehr, A, Weierstall, M, Weilhammer, P, Werner, J, Wetherell, A, Wickens, J, Wikne, J, Wilkinson, G, Williams, W, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zhang, G, Zimin, N, Zito, M, Zitoun, R, Zuberi, R, Funchal, R, Zumerle, G, Zuniga, J, 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), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
COLLISIONS, Particle physics, Nuclear and High Energy Physics, E+E ANNIHILATION, LUND MONTE-CARLO, 34-GEV, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, PHYSICS, Nuclear physics, Pion, PION INTERFEROMETRY, MASS-ENERGY, COHERENCE, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Physics, 010308 nuclear & particles physics, Detector, Bose–Einstein correlations, Charged particle, Reference sample, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment, Coherence (physics)
Abstract

Bose-Einstein correlation between pairs of like-sign charged particles produced in e+e- annihilations near the Z0 peak have been studied using data taken with the DELPHI detector at LEP. An enhancement is found in the production of pairs of identical pions of similar moments, with respect to a reference sample. Under the hypothesis that the pions are emitted by a spherically symmetrical source with gaussian density, the data indicate a radius of the source of r = 0.62±0.04(stat.)±0.20(syst.) fm. The large systematic uncertainty reflects the sensitivity of r to the choice of the reference sample, 0, info:eu-repo/semantics/published

Published
2016
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19. Characterization of MOCVD Thin-Film CdTe Photovoltaics on Space-Qualified Cover Glass

Author

Rossana Grilli, Simon D. Hodgson, Stuart J. C. Irvine, Mark A. Baker, D.A. Lamb, James Hall, Richard Kimber, Vincent Barrioz, Andrew Clayton, Giray Kartopu, and Craig Underwood

Subjects
010302 applied physics, Materials science, business.industry, Delamination, Inorganic chemistry, Energy conversion efficiency, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Cadmium telluride photovoltaics, Electronic, Optical and Magnetic Materials, law.invention, law, Photovoltaics, 0103 physical sciences, Solar cell, Adhesive, Metalorganic vapour phase epitaxy, Electrical and Electronic Engineering, Composite material, Thin film, 0210 nano-technology, business
Abstract

This paper details the AM0 conversion efficiency of a metal–organic chemical vapor phase deposition thin-film cadmium telluride (CdTe) solar cell deposited onto a cerium-doped cover glass (100 μm). An AM0 best cell conversion efficiency of 12.4% (0.25-cm2 contact area) is reported. An AM0 mean efficiency of 12.1% over eight cells demonstrated good spatial uniformity. Excellent adhesion of the cell structure to the cover glass was observed with an adhesive strength of 38 MPa being measured before cohesive failure of the test adhesive. The device structure on cover glass was also subject to severe thermal shock cycling of +80 °C to −196 °C, showing no signs of delamination and no deterioration of the photovoltaic (PV) performance.

Published
2016

20. Heterodimensional charge-carrier confinement in stacked submonolayer InAs in GaAs

Author

Robert J. Young, Holger Eisele, S. Harrison, Lefteris Danos, Andrei Schliwa, Dieter Bimberg, M. P. Young, Manus Hayne, André Strittmatter, U. W. Pohl, Andrea Lenz, and P. D. Hodgson

Subjects
010302 applied physics, Materials science, Photoluminescence, business.industry, Exciton, 02 engineering and technology, Electron, 021001 nanoscience & nanotechnology, 01 natural sciences, Magnetic field, Condensed Matter::Materials Science, Excited state, 0103 physical sciences, Optoelectronics, Charge carrier, 0210 nano-technology, business, Nanoscopic scale, Quantum well
Abstract

Charge-carrier confinement in nanoscale In-rich agglomerations within a lateral InGaAs quantum well (QW) formed from stacked submonolayers (SMLs) of InAs in GaAs is studied. Low-temperature photoluminescence (PL) and magneto-PL clearly demonstrate strong vertical and weak lateral confinement, yielding two-dimensional (2D) excitons. In contrast, high-temperature (400 K) magneto-PL reveals excited states that fit a Fock-Darwin spectrum, characteristic of a zero-dimensional (0D) system in a magnetic field. This paradox is resolved by concluding that the system is heterodimensional: the light electrons extend over several In-rich agglomerations and see only the lateral InGaAs QW, i.e., are 2D, while the heavier holes are confined within the In-rich agglomerations, i.e., are 0D. This description is supported by single-particle effective-mass and eight-band k⋅p calculations. We suggest that the heterodimensional nature of nanoscale SML inclusions is fundamental to the ability of respective optoelectronic devices to operate efficiently and at high speed.

Published
2016
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21. Optical and structural properties of InGaSb/GaAs quantum dots grown by molecular beam epitaxy

Author

Matthew Bentley, Evangelia Delli, Peter J. Carrington, P. D. Hodgson, Johannes R. Botha, M. C. Wagener, and Richard Beanland

Subjects
010302 applied physics, Photoluminescence, Nanostructure, Materials science, business.industry, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Epitaxy, 01 natural sciences, Electronic, Optical and Magnetic Materials, Quantum dot, Transmission electron microscopy, 0103 physical sciences, Materials Chemistry, Optoelectronics, Light emission, Electrical and Electronic Engineering, 0210 nano-technology, business, Spectroscopy, Molecular beam epitaxy
Abstract

We present the results of an investigation into the growth of InGaSb/GaAs quantum dots (QDs) by molecular beam epitaxy using migration-enhanced epitaxy. Surface atomic force microscopy and cross-sectional transmission electron microscopy show that the QDs undergo a significant change in morphology upon capping with GaAs. A GaAs ‘cold capping’ technique was partly successful in preserving QD morphology during this process, but strong group V intermixing was still observed. Energy-dispersive x-ray spectroscopy reveals that the resulting nanostructures are small ‘core’ QDs surrounded by a highly intermixed disc. Temperature varying photoluminescence measurements indicate strong light emission from the QDs, with an emission wavelength of 1230 nm at room temperature. Nextnano 8x8 k.p calculations show good agreement with the PL results and indicate a low level of group-V intermixing in the core QD.

Published
2018
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22. The 3D-index and normal surfaces

Author

J. Hyam Rubinstein, Neil R. Hoffman, Craig D. Hodgson, and Stavros Garoufalidis

Subjects
Pure mathematics, Ideal (set theory), Formal power series, 010308 nuclear & particles physics, General Mathematics, 010102 general mathematics, Triangulation (social science), Boundary (topology), Torus, 01 natural sciences, 57M50, Connection (mathematics), 57N10, 57M25, 0103 physical sciences, 0101 mathematics, Normal surface, Invariant (mathematics), Mathematics
Abstract

Dimofte, Gaiotto and Gukov introduced a powerful invariant, the 3D-index, associated to a suitable ideal triangulation of a 3-manifold with torus boundary components. The 3D-index is a collection of formal power series in $q^{1/2}$ with integer coefficients. Our goal is to explain how the 3D-index is a generating series of normal surfaces associated to the ideal triangulation. This shows a connection of the 3D-index with classical normal surface theory, and fulfills a dream of constructing topological invariants of 3-manifolds using normal surfaces.

Published
2016
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23. Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules

Author

Eva Tejedor, Simon D. Hodgson, Laurie J. Phillips, Vincent Barrioz, David Dupin, Sarah Rugen-Hankey, Stuart J. C. Irvine, Ken Durose, Andrew Clayton, and Giray Kartopu

Subjects
010302 applied physics, Photocurrent, Materials science, Equivalent series resistance, Renewable Energy, Sustainability and the Environment, business.industry, Energy conversion efficiency, Nanotechnology, 02 engineering and technology, Chemical vapor deposition, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Cadmium telluride photovoltaics, Electronic, Optical and Magnetic Materials, law.invention, law, 0103 physical sciences, Solar cell, Optoelectronics, Metalorganic vapour phase epitaxy, Electrical and Electronic Engineering, Thin film, 0210 nano-technology, business
Abstract

This paper reports important developments achieved with CdTe thin-film photovoltaic devices produced using metalorganic chemical vapour deposition at atmospheric pressure. In particular, attention was paid to understand the enhancements in solar cell conversion efficiency, to develop the cell design, and assess scalability towards modules. Improvements in the device performance were achieved by optimising the high-transparency window layer (Cd0.3Zn0.7S) and a device-activation anneal. These increased the fill factor and open-circuit voltage to 77 ± 1% and 785 ± 7 mV, respectively, compared with 69 ± 3% and 710 ± 10 mV for previous baseline devices with no anneal and thicker Cd0.3Zn0.7S. The enhancement in these parameters is associated with the two fold to three fold increase in the net acceptor density of CdTe upon air annealing and a decrease in the back contact barrier height from 0.24 ± 0.01 to 0.16 ± 0.02 eV. The optimum thickness of the window layer for maximum photocurrent was 150 nm. The cell size was scaled from 0.25 to 2 cm2 in order to assess its impact on the device series resistance and fill factor. Finally, micro-module devices utilising series-connected 2-cm2 sub-cells were fabricated using a combination of laser and mechanical scribing techniques. An initial module-to-cell efficiency ratio of 0.9 was demonstrated for a six-cell module with the use of the improved device structure and processing. Prospects for CdTe photovoltaic modules grown by metalorganic chemical vapour deposition are commented on.

Published
2016

24. Non-geometric veering triangulations

Author

Craig D. Hodgson, Henry Segerman, and Ahmad Issa

Subjects
Class (set theory), Ideal (set theory), General Mathematics, 010102 general mathematics, Torus, Geometric Topology (math.GT), Computer Science::Computational Geometry, 01 natural sciences, Mathematics::Geometric Topology, Homeomorphism, Combinatorics, Mathematics - Geometric Topology, Triangulation (geometry), Product (mathematics), 0103 physical sciences, Metric (mathematics), Tetrahedron, FOS: Mathematics, 010307 mathematical physics, 0101 mathematics, Mathematics
Abstract

Recently, Ian Agol introduced a class of “veering” ideal triangulations for mapping tori of pseudo-Anosov homeomorphisms of surfaces punctured along the singular points. These triangulations have very special combinatorial properties, and Agol asked if these are “geometric”, i.e. realized in the complete hyperbolic metric with all tetrahedra positively oriented. This article describes a computer program Veering, building on the program Trains by Toby Hall, for generating these triangulations starting from a description of the homeomorphism as a product of Dehn twists. Using this we obtain the first examples of non-geometric veering triangulations; the smallest example we have found is a triangulation with 13 tetrahedra.

Published
2014
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25. High speed CO2laser surface modification of iron/cobalt co-doped boroaluminosilicate glass and the impact on surface roughness, gloss and wettability

Author

David Waugh, Alice R. Gillett, Jonathan Lawrence, and Simon D. Hodgson

Subjects
Materials science, Physics and Astronomy (miscellaneous), business.industry, chemistry.chemical_element, 02 engineering and technology, Surface finish, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Gloss (optics), 0104 chemical sciences, Contact angle, Optics, chemistry, Surface roughness, Surface modification, Laser power scaling, Wetting, Composite material, 0210 nano-technology, business, Instrumentation, Cobalt
Abstract

A preliminary study into the impact of high speed laser processing on the surface of iron and cobalt co-doped glass substrates using a 60 W continuous wave (cw) CO2 laser. Two types of processing, termed fill-processing and line-processing, were trialled. In fill-processed samples the surface roughness of the glass was found to increase linearly with laser power from an S a value of 20.8 nm–2.1 μm at a processing power of 54 W. With line processing, a more exponential-like increase was observed with a roughness of 4 μm at 54 W. The change in surface properties of the glass, such as gloss and wettability, have also been measured. The contact angle of water was found to increase after laser processing by up to 64°. The surface gloss was varied between 45 and 100 gloss units (GUs).

Published
2016
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26. Study of hard scattering processes in multihadron production from ?? collisions at LEP

Author

P. Carrilho, J. J. Hernandez, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, P. Delpierre, E. Daubie, D. Vilanova, J. Blocki, J-C. Marin, M. Bonesini, Vladimir Cindro, F. Dupont, Andrey Korytov, G. Myatt, B. Koene, G. E. Theodosiou, S. C. Blyth, G. Wilkinson, M.D.M. De Fez Laso, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, G. Borisov, Kathy Huet, Valeriy Pozdniakov, M. Baubillier, Achille Stocchi, T. Bolognese, Luis Peralta, F. Kapusta, A. Pullia, Jan Krolikowski, N. N. Khovanski, W. Bartl, A. N. Sisakian, T. Hofmokl, K. A. J. Forbes, S. D. Hodgson, B. Golob, T. Buran, Markus Elsing, D. Zontar, W. Bonivento, J. A. Valls Ferrer, J. P. Laugier, D. J. Holthuizen, Y. Sacquin, Paolo Morettini, J. G. Loken, P. Beilliere, A. Firestone, A. Buys, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, M. Vollmer, E. Rosso, H. Klein, Paolo Giacomelli, K. Osterberg, M. Los, M. Zito, M. Prest, Kerem Cankocak, Allan Hallgren, U. Haedinger, Manfred Krammer, R. Zuberi, J. T.M. Chrin, M. Michelotto, Olga Botner, Krzysztof Korcyl, V.A. Uvarov, R. Lauhakangas, Ph. Charpentier, M. Sessa, George Kalkanis, P. B. Renton, D. C. Fries, W. Hao, O. Barring, M. Pimenta, B. A. Khomenko, Francesco Navarria, P. Langefeld, T. Maron, L. Gorn, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, C. Kreuter, E. Karvelas, Wolfgang Adam, J. Cuevas Maestro, M. Donszelmann, Danilo Zavrtanik, R. Gokieli, A. Lopez-Fernandez, Tuure Tuuva, Clara Troncon, C. De Clerq, Ugo Gasparini, M. J. Bates, T. Spassov, D. Gamba, Carmen García, H. Foeth, R. J. Apsimon, T. L. Hessing, B. Ueberschaer, M. McCubbin, J. N. Jackson, A. De Min, I. Siccama, G. Sajot, P. Kokkinias, J. J. Gomez Y Cadenas, R. Pain, C. Gaspar, S. Ueberschaer, Tord Ekelof, H. Staeck, B. Loerstad, G. Valenti, Andrea Perrotta, A. Elliot Peisert, S. O. Holmgren, L. S. Vertogradov, R. Cases, P. Abreu, J. Chauveau, I. A. Tyapkin, J. Dolbeau, Yu. Belokopytov, Phillip Allport, Guido Barbiellini, F. Carena, M. Szczekowski, V. Obraztsov, Tiziano Rovelli, A. Baroncelli, P. Van Dam, T. Todorov, M. Wielers, B. Marechal, E. C. Katsoufis, Marta Calvi, Vincenzo Canale, Geoffrey Smith, F. Verbeure, A. De Angelis, P. Collins, M. Jonker, A. B. Fenyuk, F. Pierre, Vincent Hedberg, P. Bambade, H. Palka, G. Skjevling, G. W. Van Apeldoorn, J. W. Lamsa, F. Barao, M. L. Turluer, D. Reid, L. O. Eek, R. C. Shellard, L. Di Ciaccio, A. M. Segar, E. Higon, R. Seufert, S. Bosworth, F. Scuri, A. M. Wetherell, L. Lanceri, Stéphane Plaszczynski, Juan Abel Barrio, Borge Svane Nielsen, J. J. Lozano, H. De Boeck, S. De Brabandere, B. Jean-Marie, M. Tyndel, B. Stugu, J. Guy, M. Gandelman, Paolo Ronchese, P.S.L. Booth, K. D. Brand, J. Pennanen, N. I. Zimin, E. K. Johansson, O. Smirnova, A. Maltezos, N. J. Kjaer, T. Moa, U. Hamacher, Th. D. Papadopoulou, Guenakh Mitselmakher, R. Henriques, Charles Bricman, J. Maillard, M. Pernicka, A. G. Olshevski, O.M. Kouznetsov, Norbert Neumeister, G. Ekspong, H. Furstenau, C. De La Vaissiere, Themistocles Bowcock, A. Tilquin, Jesus Marco, G. Lenzen, G. Tristram, R. Strub, L. Ventura, R. Lindner, Y. Lemoigne, I. Roncagliolo, Daniel Bloch, Gianni Zumerle, R. Barate, G. E. Kalmus, Ahmimed Ouraou, V.M. Golovatyuk, V. Lepeltier, P. S. Iversen, F. Fontanelli, Juan Fuster, Steinar Stapnes, F. Martinez-Vidal, Pawel Jalocha, Barry King, A. P. Ostankov, Giovanni Darbo, A. Budziak, P. N. Ratoff, P. Szymanski, S. Simonetti, M. Begalli, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, P. Bruckman, B. Boštjančič, V. Perevozchikov, G. Cosme, V. Kostioukhine, M. Koratzinos, P. Poropat, Andromachi Tsirou, Andre Augustinus, A. Wehr, Rupert Leitner, G. Piana, R. Moeller, P. J. Holt, Paolo Checchia, G. Matthiae, Ph. Gavillet, L. K. Resvanis, N. G. Redaelli, Robert S. Brown, Massimo Caccia, E. Spiriti, R. Frühwirth, J. Timmermans, O. Podobrin, Vladimir Nikolaenko, M. Kaiser, M. Weierstall, G. Smadja, A. Lipniacka, P. N. Bogolubov, Cristian Stanescu, P. Branchini, H. Schneider, M. van der Heijden, Christine Kourkoumelis, Robin Campion, E. Dahl-Jensen, A. Passeri, Claire Bourdarios, P. Paganini, M. Battaglia, Tim Adye, W. Neumann, F. Simonetto, G. Leder, B. Åsman, Fernand Grard, D. Crennell, A. Maio, F. Mandl, J. P. Gerber, Peter Kluit, Gary John Barker, S. Squarcia, H. Saarikko, T. Tabarelli, J. Drees, D. Bertrand, Marco Bozzo, J. C. da Silva, G. Hamel de Monchenault, Josef Strauss, S. Braibant, V. Chabaud, M. Espirito Santo, W. Venus, Dietrich Liko, P. Privitera, D. Gillespie, Chariclia Petridou, P. Herquet, P. Frenkiel, J. Straver, K. Woschnagg, Stanislav Nemecek, Y. Dufour, P. Rebecchi, M. Berggren, Louis Lyons, E. Lieb, H. Rahmani, G. Gopal, L. De Paula, D. Fassouliotis, Ariella Cattai, P. Niss, F. Waldner, E. Cortina, R. McKay, N. Novak, T. Bamporesi, Matteo Pegoraro, Sandor Czellar, R. Aleksan, C. O. Higgins, J. Dahm, Patrick Jarry, W. Ruckstuhl, C. Walck, J. L. Fousset, F. Ledroit, C. Vander Velde, O. Ullaland, Leif J. Jönsson, P. H. Kramer, G. Polok, Pierre Billoir, G. Rinaudo, J. Salt, G. A. Chelkov, L. Bugge, A. J. Camacho Rozas, D. Z. Toet, Luc Pape, P. Siegrist, Evangelos Gazis, Maria Roberta Monge, A. Zalewska, W. T. Meyer, Jacques Lemonne, Laurent Mirabito, R. Contri, J. A. Hernando, P. Juillot, P. Beltran, S. Marti, Chiara Mariotti, S. Francon, Andrei Nomerotski, H. Briand, M. Reale, Daniel Treille, M. Bigi, J. Ridky, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, P. Vaz, R. A. Brenner, Stefano Ragazzi, Demetrios Loukas, F. Formenti, F. Cao, S. Hahn, G. Sciolla, R. Nicolaidou, I. Kronkvist, F. M L Almeida Junior, Manolis Dris, P. Roudeau, M. Chapkin, Francesca Romana Cavallo, S. J. Alvsvaag, E. Agasi, M. Dracos, M. A. Lopez Aguera, Vaclav Vrba, Jorge-Armando Benitez Garcia, J. Lindgren, Z.D. Thome, B. Franek, Ernesto Migliore, Hans Dijkstra, Alberto Benvenuti, J. Van Eldik, Heinz Pernegger, M. Verlato, W. Van Doninck, J. M. Levy, V. V. Lapin, G. Wormser, M. Feindt, N. Ershaidat, A. Ferrer, V. Bocci, P. Negri, A. Tomaradze, T. S. Hill, Stefan Schael, I. Lippi, E. I. Rosenberg, W. J. Murray, J.D. Richardson, Göran Jarlskog, A. Daum, Richard Jacobsson, A. Petrolini, R. Orava, A. Koch-Mehrin, Martino Margoni, K. Kurvinen, Javier Sánchez, E. Fokitis, G. D. Alekseev, E. Torassa, W. Krupinski, W. D. Apel, Ivan Mikulec, E.N. Tsyganov, J. H. Wickens, Mogens Dam, B. Muryn, C. Martinez-Rivero, Marco Paganoni, Jose Luis Contreras, Mario Sannino, K. Hultqvist, R. McNulty, Georgios Stavropoulos, B. Bouquet, H. J. Hilke, L. Vitale, D. Radojicic, B. De Lotto, G. Crosetti, Evgueni Vlasov, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, M. Karlsson, P. Lutz, T. A. Filippas, M. Regler, R. Ehret, H. Mueller, M. S. Bilenky, H. Herr, L. G. Tkatchev, L.J. Carroll, A. Seitz, J. Medbo, P. Weilhammer, R. Sekulin, G. Maehlum, Fares Djama, William Trischuk, A. Markou, J. P. Engel, M. V. Castillo Gimenez, Paul Dauncey, N. Demaria, G. Damgaard, V. Gracco, Pavlos Ioannou, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, J. Davies, J. E. Augustin, S. Haider, H. B. Crawley, L. Brillault, W. A. Mitaroff, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, M. Voutilainen, D. Edsall, G. Grosdidier, Alessandra Romero, A. Ruiz, M. A E Schyns, P. F. Honore, B. Dalmagne, Laurent Chevalier, Milos Lokajicek, L. Tortora, F. J. Harris, Carlos Lacasta, R. Sosnowski, F. Stichelbaut, K. Kulka, P. Vincent, F. Naraghi, V. G. Timofeev, A. Andreazza, R. Keranen, Francisco Matorras, C. Defoix, F. Fulda-Quenzer, D. Souza-Santos, E. Graziani, J. M. Brunet, F. Couchot, J. Bjarne, B. Tome, P. Antilogus, F. Hahn, W. Kucewicz, Marc Winter, B. Grossetete, H. Wahlen, J. H. Koehne, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, G. Vegni, A. G. Frodesen, Z. Hajduk, M. Davenport, A. Hakansson, P. V. Chliapnikov, A. Chan, W.S.C. Williams, Lucio Cerrito, V. Chorowicz, Maciej Górski, and M. Mazzucato

Subjects
Physics, Quark, Particle physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parton, Vector meson dominance, Jet (particle physics), 01 natural sciences, Photon structure function, Gluon, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Vector meson, 010306 general physics, Engineering (miscellaneous)
Abstract

The production of multihadronic states in γγ collisions at LEP has been studied with the DELPHI detector. The analyzed data correspond to an integrated luminosity of about 32pb−1, collected in the LEP runs of 1990–1992. Minimum bias data and a sample of events with jets at highpT have been selected under the requirement that no scattered electron or positron is observed. The two data sets have been compared to Monte Carlo predictions. The non-perturbative contribution described by the vector meson dominance Model and direct\(q\bar q\) production from pointlike photons described by the quark parton model were found to be insufficient to reproduce the data. It has been necessary to include a third interaction component, which is due to perburbative hard scattering of the partonic constituents of the photon. Several parametrisations of the quark and gluon densities of the photon have been tested. The interplay with the cut in jet transverse momentum, which is necessary for the separation of the perturbative and non-perturbative regions, is discussed. The data favour parametrisations with rather soft partonic content of the photon.

Published
1994
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27. Measurement of inclusive production of light meson resonances in hadronic decays of the Z0

Author

F. Kapusta, P. Abreu, A. Pullia, Klaus Hamacher, S. O. Holmgren, L. S. Vertogradov, H. Furstenau, T.B. Skaali, S. J. Alvsvaag, E. Agasi, Juan Abel Barrio, Luca Tortora, Eugene P. Gross, E. G. Anassontzis, J. P. Engel, P. Herquet, R. Contri, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, G. Vegni, N. Brummer, T. Hofmokl, C. J. Beeston, M. V. Castillo Gimenez, A. M. Segar, J. M. Levy, M. Feindt, P. Negri, Manolis Dris, E. Rosso, H. Klein, P. Roudeau, K. Osterberg, G. Damgaard, Tiziano Rovelli, D. Isenhower, M. Los, P. S. Iversen, F. Fontanelli, P. Borgeaud, Göran Jarlskog, Alberto Benvenuti, D. Johnson, O. Pingot, Mogens Dam, S. Squarcia, E. K. Johansson, D. Bertrand, H. Muller, V. Gracco, H. Foeth, C. Bosio, G. Hamel de Monchenault, Steinar Stapnes, Josef Strauss, R. J. Apsimon, R. Holmes, H. Saarikko, M. van der Heijden, C. Ronnqvist, G. Zhang, A. P. Ostankov, S. Braibant, V. Chabaud, A. Firestone, Pavlos Ioannou, F. Couchot, W. Venus, Robin Campion, M. Pimenta, B. A. Khomenko, Dietrich Liko, N. De Groot, P. Yepes, P. Privitera, Chariclia Petridou, Patrick Jarry, G. Rinaudo, Francesco Navarria, Louis Lyons, J. Wikne, J.T. Chrin, E. Graziani, Demetrios Loukas, P. Grosse-Wiesmann, A. De Angelis, C. Vander Velde, M. Vollmer, J. Bjarne, P. Collins, D. Delikaris, P. Antilogus, J. Zúñiga, M. A. Houlden, J. Davies, W. Ruckstuhl, I. Kronkvist, Gary John Barker, U. Rossi, Paolo Giacomelli, J. Werner, Daniel Bloch, Luc Pape, D. Wormald, T. Maron, H. Briand, Daniel Treille, G. A. Chelkov, V.A. Uvarov, Th. D. Papadopoulou, Guenakh Mitselmakher, S. Rossi, Ahmimed Ouraou, V.M. Golovatyuk, K. Woschnagg, P. David, Jorge-Armando Benitez Garcia, S. Delorme, A. Petrolini, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, Maria Elena Pol, S. Katsanevas, W.S.C. Williams, G. Wormser, A. De Min, I. Siccama, G. Sajot, D. Vilanova, G. Gopal, M. Zito, W. Klempt, F. Hahn, R. Pain, R. Moller, C. Lambropoulos, Ugo Amaldi, A. N. Sisakian, P. Beltran, Paul Baillon, W. Da Silva, W. A. Mitaroff, W. De Boer, E. Zevgolatakos, Lucio Cerrito, P. E. S. Nilsen, José Salt, T. Tabarelli, E. Lieb, H. Rahmani, H. Herr, L. G. Tkatchev, y Cadenas J.J. Gomez, J. N. Jackson, V. Chorowicz, K. Monig, P. Kokkinias, M. J. Bates, Nikita Smirnov, Allan Hallgren, J-C. Marin, R. Gokieli, Spyros Tzamarias, G. Maehlum, U. Haedinger, T. A. Filippas, M. Regler, P. Branchini, P. Billoir, K. Kulka, H. Palka, G. Skjevling, T.S. Spassov, H. Schneider, R. Lauhakangas, J. W. Lamsa, K. A. J. Forbes, D. J. Holthuizen, D. Fassouliotis, Ariella Cattai, D. Gamba, F. Ledroit, S. D. Hodgson, M. Witek, H. J. Hilke, P. Niss, F. Barao, F. Carena, M. Szczekowski, R. Ehret, M. Sessa, G. Sciolla, M. Battaglia, W. Van Doninck, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, S. Marti, M. Voutilainen, G. Grosdidier, M. Crozon, Alessandra Romero, I. Lippi, Stefano Ragazzi, A. Ruiz, J. Kesteman, E. I. Rosenberg, M. A E Schyns, M. Donszelmann, D.Yu. Bardin, A. Lopez-Fernandez, G. Voulgaris, U. Kruner-Marquis, Antonio Ferrer, K. Kurvinen, E. Higon, R. Seufert, S. Bosworth, F. Scuri, Danilo Zavrtanik, F. Stichelbaut, A. Andreazza, P. H. Kramer, M. Pernicka, I. Hietanen, K. Furnival, Y. Sacquin, F. Verbeure, V. Vrba, M. Michelotto, A. M. Wetherell, M. Richardson, G. Borisov, Richard Brenner, J.H. Kohne, P. F. Honore, J. E. Augustin, Borge Svane Nielsen, A. Maltezos, T.E. Pettersen, M. Davenport, J. Lindgren, M. Baubillier, Achille Stocchi, M. Karlsson, O. Ullaland, Leif J. Jönsson, S. Francon, Javier Sánchez, B. Golob, T. Buran, B. Lorstad, Wolfgang Adam, U. Trevisan, J. J. Lozano, Krzysztof Doroba, Chiara Meroni, M. Chapkin, Jan Buytaert, A. Grant, M. Mazzucato, P. Szymanski, S. Haider, A. G. Frodesen, L. Lanceri, Stéphane Plaszczynski, Ivan Mikulec, Jesus Marco, G. Lenzen, R. Strub, F. Cao, J. Dolbeau, P. Bambade, Z. Hajduk, Eleuterio Spiriti, R. Zuberi, Olga Botner, M. Bonesini, Krzysztof Korcyl, M.S. Bilenkii, Paul Allen, R. Keranen, Philippe Charpentier, Francisco Matorras, P. Vaz, F. R. Cavallo, R. Sekulin, W. D. Apel, B. Franek, Hans Dijkstra, J. J. Hernandez, T. Moa, G. E. Theodosiou, Tuure Tuuva, Clara Troncon, P. Zalewski, Fares Djama, C. Huet, Juan Fuster, Maciej Górski, Peter Kluit, M. Fernandez Alonso, S. C. Blyth, P.S.L. Booth, N. Yamdagni, A. Klovning, C. Caso, A. Hakansson, H. Stack, A. G. Olshevski, L. Chaussard, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, Charles Bricman, V. Obraztsov, G. Valenti, William Trischuk, A. Markou, C. Gaspar, Carmen García, G. Wilkinson, Yu. Belokopytov, M.D.M. De Fez Laso, M. Jonker, F. Pierre, T. Bolognese, V. Bocci, A. Passeri, R. Sosnowski, Tord Ekelof, G. Ekspong, P. O. Hulth, Giovanni Darbo, Paolo Ronchese, P. N. Ratoff, M. Mccubbin, S. Simonetti, P. V. Chliapnikov, A. Tomaradze, N. J. Kjaer, M. Begalli, K. D. Brand, J. Pennanen, N. I. Zimin, I. Roncagliolo, F. Dupont, Andrey Korytov, O.M. Kouznetsov, H. P. Borner, V. Lepeltier, Stefan Schael, W. Kucewicz, H. B. Crawley, R. Zukanovich Funchal, Marc Winter, E. Karvelas, M. P. Clara, M. Kopf, P. Vincent, V. G. Timofeev, B. Grossetete, Maria Roberta Monge, O. Toker, A. Zalewska, W. T. Meyer, Paolo Checchia, Rupert Leitner, A. Daum, L. Bugge, P. Delpierre, E. Daubie, Martino Margoni, R. Mcnulty, E. Fokitis, A. J. Camacho Rozas, E. Cortina, D. Z. Toet, G. D. Alekseev, E. Torassa, Jan Krolikowski, N. N. Khovanski, P. Siegrist, G. Matthiae, W. Bartl, H. Wahlen, V. Kostukhin, Ariel Goobar, Ph. Gavillet, J. Cuevas Maestro, G. Myatt, S. Uberschar, L. Mathis, U. Mjornmark, G. Tristram, Paula Eerola, W. Bonivento, C. Defoix, J. A. Valls Ferrer, G. Galeazzi, F. Fulda-Quenzer, Jacques Lemonne, Alexander Lincoln Read, M. Szeptycka, B. Dalmagne, T. Todorov, H. Burmeister, J. P. Gerber, J. P. Laugier, Laurent Chevalier, W. Ershaidat, G. W. Van Apeldoorn, R. Mckay, R. Barate, Claire Bourdarios, A. Algeri, V. Ruhlmann-Kleider, C. O. Higgins, G. E. Kalmus, K. H. Becks, E. Vallazza, J. M. Brunet, Laurent Mirabito, Robert S. Brown, L. Ventura, Milos Lokajicek, Mario Sannino, M. L. Turluer, D. Reid, R. Lindner, Y. Lemoigne, K. Hultqvist, Georgios Stavropoulos, M. A. Lopez Aguera, F. J. Harris, A. Koch Mehrin, J. E. Hooper, Carlos Lacasta, Matteo Pegoraro, L. K. Resvanis, R. Orava, Fernand Grard, Gianni Zumerle, Y. Dufour, P. D. Dauncey, Sandor Czellar, M. Weierstall, G. Smadja, B. Nijjhar, P. N. Bogolubov, Bruno Schulze, B. Bouquet, O. Chikilev, Massimo Caccia, Vladimir Nikolaenko, G. Polok, Ugo Gasparini, P. Poropat, Andromachi Tsirou, Christine Kourkoumelis, J. Drees, T.L. Hessing, E. Dahl-Jensen, Guido Barbiellini, Andre Augustinus, A. Wehr, J. Guy, Natale Demaria, Evangelos Gazis, D. Benedic, Tim Adye, M. Berggren, G. Meola, P. Juillot, C. Stanescu, George Kalkanis, P. B. Renton, D. C. Fries, E. C. Katsoufis, Marta Calvi, J. Chauveau, I. A. Tyapkin, Vincenzo Canale, Geoffrey Smith, L.J. Carroll, P. Van Dam, C. De La Vaissiere, P. Weilhammer, Themistocles Bowcock, A. Tilquin, T. Lesiak, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, F. Simonetto, A. Lipniacka, G. Leder, B. Åsman, B. Koene, Paolo Morettini, D. Crennell, F. Mandl, J. G. Loken, P. Beilliere, W. Hao, O. Barring, J. Ridky, M. Dracos, E.N. Tsyganov, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, L. Vitale, D. Radojicic, P. Lutz, Andrea Perrotta, G. Sette, A. Elliot Peisert, H. De Boeck, B. Jean-Marie, M. Tyndel, J. Maillard, B. Boštjančič, V. Perevozchikov, Tiziano Camporesi, G. Cosme, A. Baroncelli, N. G. Redaelli, Marco Bozzo, P. Frenkiel, J. Straver, F. Waldner, C. Walck, J. L. Fousset, Mitchell Wayne, V. V. Lapin, A. Chan, C. De Clercq, W. J. Murray, Itzhak Roditi, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, LUND MONTE-CARLO, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, E+E-ANNIHILATION, 01 natural sciences, JET FRAGMENTATION, K+P INTERACTIONS, PHYSICS, Nuclear physics, GEV/C, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], RHO0, Física nuclear, Multiplicity (chemistry), 010306 general physics, Particle Physics - Experiment
Abstract

A study of inclusive production of the meson resonances ρ0, K*0 (892), f{hook}0 (975) and f{hook}2 (1270) in hadronic decays of the Z0 is presented. The measured mean meson multiplicity per hadronic event is 0.83 ± 0.14 for the ρ0 0.64 ± 0.24 for the K*0 (892), 0.10 ± 0.04 for the f{hook}0 (975) in the momentum range p > 0.05pbeam (xp > 0.05) and 0.11 ± 0.05 for the f{hook}2 (1270) for xp > 0.1. These values and the corresponding differential cross sections ( 1 σhadr) dσ dxp for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HERWIG 5.4 models. The f{hook}2 (1270) production is overestimated by HERWIG but its xp-shape is correctly reproduced. The measured ratios of the production cross sections σ(f{hook}2(1270)) σ(ρ0) = 0.22 ± 0.08 and σ(f{hook}2(1270)) σ(f{hook}0(975)) = 3-1 +7 for xp > 0.1 are consistent with the results obtained in hadronic reactions. © 1993.

Published
1993
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28. The reaction e+e− → γγ(γ) at Z0 energies

Author

A. Campion, S. Volponi, R. Zukanovich Funchal, Marc Winter, C. Troncon, Ariel Goobar, J. H. Koehne, K. H. Becks, E. Vallazza, C. Vander Velde, P. Abreu, P. Borgeaud, Itzhak Roditi, Gueorgui Chelkov, M. Bonapart, F. Couchot, G. Hamel de Monchenault, J. Bjarne, P. Antilogus, F. Alted, P. Negri, W. Kucewicz, G. Matthiae, J.H. Bibby, E.N. Tsyganov, J. H. Wickens, K. Hamacher, W. Klempt, S-O. Holmgren, N. Crosland, W. Venus, Jose Luis Contreras, Tiziano Rovelli, G. Wormser, Pieter David, Peter M. Allen, B. A. Khomenko, M. Sesa, S. Gumenyuk, R. A. Brenner, J. Velasco, M. Pimenta, M. Voutilainen, G. Grosdidier, W. D. Apel, F. Richard, C. Matteuzzi, M. Crozon, D. Radojicic, Jan Ridky, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, M. Kopf, S. J. Alvsvaag, M. Hahn, Alessandra Romero, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, W. Krupinski, I. Lippia, M. Jonker, A. Ruiz, J. Kesteman, G. Borisov, G. Kantardjian, C. J. Beeston, n. Brunner, B. Korzen, P. Checcia, S. Marti, T. Kreuzberger, R. Ovara, F. Verbeue, A. B. Fenyuk, P. Lutz, J. Pyyhtia, S. Almehed, F. Stichelbaut, F. Hahn, W. Van Doninck, R. Mc Kay, F. Adami, R. Keranen, H. J. Hilke, Francisco Matorras, Goeran Jarlskog, N. Yamdagni, P. F. Honore, D. Johnson, Th. D. Papadopoulou, Guenakh Mitselmakher, L. Di Ciaccio, R. Zitoun, A. Katargin, Mogens Dam, V. Canale, D. Isenhower, M. Los, R. Llosa, Claudia J. Stubenrauch, R. Seufert, H. Forsbach, Jon Christopher Wikne, C. Defoix, V. Lepeltier, J. E. Augustin, A. Pinsent, Demetrios Loukas, C. Ronnqvist, G. Zhang, Eleuterio Spiriti, F. Fulda-Quenzer, T. Todorov, A. P. Ostankov, J. Derkaoui, S. Squarcia, R. Holmes, H. Saarikko, T. Tabarelli, G. Vegni, Ph. Gavillet, T. Moa, T. Braun, S. Haider, K. Woschnagg, V. Kostukhin, M. L. Turluer, E. Graziani, E. Lieb, Edoardo Castelli, D. Reid, F. Pierre, E. K. Johansson, C. Bosio, J. M. Brunet, H. Foeth, José Salt, G. Gopal, C. Caso, D. Fassouliotis, Ariella Cattai, Luc Pape, Ugo Gasparini, F. Ledroit, Jacques Lemonne, E. J. Sanchez, Gianni Zumerle, B. Ueberschaer, M. Boratav, P. Roudeau, Jorge-Armando Benitez Garcia, T. P. A. Åkesson, O. Ullaland, G. Ekspong, Leif J. Jönsson, Piotr Zalewski, L. Vibert, P. Branchini, F. Kapusta, H. B. Crawley, Guido Barbiellini, Tiziano Camporesi, P. Poropat, Andromachi Tsirou, J. Guy, U. Trevisan, Giovanni Darbo, A. De Angelis, P. Collins, D. Delikaris, V. Vrba, N. van Eijndhoven, H. Schneider, Tim Adye, E. G. Anassontzis, M. Begalli, A. De Min, C. Kourkoumelis, Joao Varela, J. Werner, J. P. Engel, M. V. Castillo Gimenez, J. J. Gomez Y Cadenas, B. Franek, V.A. Uvarov, Daniel Bloch, S. Braibant, Borge Svane Nielsen, R. Lauhakangas, N. G. Redaelli, J. J. Lozano, M. H. Gros, H. Furstenau, Ahmimed Ouraou, V.M. Golovatyuk, A. G. Frodesen, S. Ueberschaer, Jan Buytaert, Marco Bozzo, M. T. Trainor, A. Lopez-Fernandez, D. Benedic, A. Klovning, G. Damgaard, Tuure Tuuva, A. Maltezos, A. G. Olshevski, M. Fernandez Alonso, Z. Hajduk, P. Frenkiel, S. Dagorte, T. Hofmokl, Marek Szczekowski, V. Obraztsov, Maciej Górski, Andrey Korytov, Maria Roberta Monge, A. Zalewska, Dietrich Liko, P. Privitera, W. T. Meyer, O. Pingot, M. Donszelmann, Jan Krolikowski, N. N. Khovanski, W. Bartl, E. Rosso, H. Klein, A. Hakansson, M. Michelotto, J. A. Valls Ferrer, I. Roncagliolo, B. Dalmagne, Laurent Chevalier, M. S. Bilenky, J. P. Laugier, M. Schaeffer, L.J. Carroll, N.I. Zimin, V. Gracco, C. Walck, K. D. Brand, B. De Lotto, P. Kokkinias, V. Ruhlmann, Milos Lokajicek, W. Dulinski, P. V. Chliapnikov, P. Weilhammer, Daniel Treille, M. Turala, W.S.C. Williams, Pavlos Ioannou, R. Moeller, D. Bertrand, L. Bugge, A. J. Camacho Rozas, Antonio Ferrer, J. Strauss, Roberto Cirio, Lucio Cerrito, L. K. Resvanis, D. Z. Toet, P. Folegati, W. Ruckstuhl, D. Crennell, F. Mandl, V. Chorowicz, Stefaan Tavernier, H. Wahlen, F. J. Harris, P. Beltran, J. Lindgren, Chiara Meroni, B. W. Heck, M. Richardson, J. E. Hooper, Carlos Lacasta, A. Perrotta, Krzysztof A. Rybicki, D. Wormald, A. Lettessier-Sevlon, M. Baubillier, Massimo Caccia, Vladimir Nikolaenko, G. Crosetti, Evgueni Vlasov, Guy Wilkinson, R. Lucock, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, T. Spasoff, J. Cuevas Maestro, Luca Tortora, Francesca Romana Cavallo, H. Herr, Mitchell Wayne, A. Firestone, P. Juillot, M. Mazzucato, F. Waldner, F. Djama, P. Szymanski, M. Battaglia, M. Pernicka, I. Hietanen, T. Bolognese, V. V. Lapin, Jesus Marco, G. Lenzen, Ph. Charpentier, R. Strub, J. E. Campagne, C. De Clercq, R. Sekulin, M. Koratzinos, W. J. Murray, Y. Dufour, J. J. Hernandez, L. Lyon, J. P. Gerber, P. D. Dauncey, G. Maehlum, P. O. Hulth, G. Sette, A. Elliot Peisert, M. Vollmer, R. Mc Nulty, H. De Boeck, B. Jean-Marie, M. Tyndel, K. W. Glitza, J. Maillard, V. Perevozchikov, G. Polok, U. Rossi, Paolo Giacomelli, William Trischuk, B. Nijjhar, P. Delpierre, E. Daubie, S. Delorme, M. Berggren, M. Zito, A. Augustinus, C. Stanescu, S. D. Hodgson, G. Myatt, G. E. Theodosiou, A. Passeri, J.M. Gago, Pierre Billoir, S. C. Blyth, B. Grossetete, Allan Hallgren, Giovanni Valenti, P. Vaz, G. Smadja, M.D.M. De Fez Laso, M. Szeptycka, A. Lounis, S. Biagi, H. P. Borner, Stefan Schael, Natale Demaria, D. Y. Bardin, R. Dzhelyadin, A. Markou, Olga Botner, L. Mathis, George Kalkanis, P. B. Renton, Patrick Jarry, G. Rinaudo, D. C. Fries, Krzysztof Korcyl, E. C. Katsoufis, U. Mjoernmark, M. J. Bates, Paul Baillon, Jose M. Benlloch, A. Grant, Carmen García, Marta Calvi, Alexander Lincoln Read, Geoffrey Smith, G. Leder, D. Gamba, L. S. Vertogradov, G. Voulgaris, I. Herbst, H. Palka, Juan Fuster, G. Skjevling, J. W. Lamsa, Hans Dijkstra, F. Barao, E. Higon, F. Scuri, A. M. Wetherell, L. Lanceri, J. N. Jackson, U. Kruener-Marquis, Mario Sannino, Paolo Ronchese, N. J. Kjaer, B.D. Hyams, M. A. Lopez Aguera, G. Tristram, Paula Eerola, B. Åsman, E. I. Rosenberg, L. O. Eek, Josef Hrubec, G. E. Kalmus, Fernand Grard, K. Kurvinen, Javier Sánchez, A. M. Segar, B. Bouquet, M. De Beer, P. S. Iversen, F. Fontanelli, M. Bonesini, G. W. Van Apeldoorn, R. J. Apsimon, Y. Sacquin, Pierre Astier, L. G. Tkatchev, L. Ventura, W. Bonivento, Tord Ekelof, H. Staeck, Hans Muller, B. Loerstad, P. N. Bogolubov, M. Pegoraro, E. Dahl-Jensen, H. Burmeister, Robert S. Brown, D. Vilanova, P. Herquet, J-C. Marin, G. Cosme, R. Gokieli, R. Contri, Spyros Tzamarias, M. Davenport, U. Nau-Korzen, A. Baroncelli, K. Doroba, E. Menichetti, Stefano Ragazzi, M. Houlden, Manolis Dris, P. Van Dam, W.H. Range, F. Cao, E. Lillethun, R. Sosnowski, F. Naraghi, V. G. Timofeev, Renato Turchetta, C. De La Vaissiere, G. Galeazzi, K. Moenig, A. Tilquin, Martino Margoni, E. Fokitis, J. Dolbeau, P. Bambade, Pawel Jalocha, Barry King, P.S.L. Booth, P. N. Ratoff, D. J. Holthuizen, K. Furnival, Charles Bricman, Wolfgang Adam, R. Frühwirth, Yu. Belokopytov, J. Timmermans, G. D. Alekseev, M. P. Clara, A. Lipniacka, M. Mc Cubbin, K. Hultqvist, Maria Elena Pol, S. Katsanevas, D. Husson, T. A. Filippas, M. Regler, G. Stavropoulo, I. A. Tyapkin, P. Yepes, H. Mueller, P. Kluit, B. Koene, A. Pullia, Paolo Morettini, J. G. Loken, P. Beilliere, W. A. Mitaroff, R. Pain, O. Barring, S. Maltezos, J. Drees, Evangelos Gazis, M. Dracos, Abreu, P., Adama, W., and Canale, Vincenzo

Subjects
Physics, Geometric matching, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Lambda, 01 natural sciences, Nuclear physics, Excited state, 0103 physical sciences, Physique des particules élémentaires, Atomic physics, 010306 general physics
Abstract

The total and differential cross-sections for the reaction e+e- → γγ(γ) are measured at centre of mass energies around 91 GeV using an integrated luminosity of 4.7 pb-1. The aggreement with QED prediction is good. Consequently there is no evidence for non-standard channels which would have the same experimental signature. The lower limits on the QED cuttoff parameters are Λ+ > 113 GeV and Λ- > 95 GeV. An upper limit on the effective coupling between a possible excited electron and the gamma is derived. At 95% confidence level the branching ratios for Z0 decay into π0γ, ηψ and γγγ are below 1.5 × 10-4, 2.8 × 10-4 and 1.4 × 10-4 respectively., 0, info:eu-repo/semantics/published

Published
1991
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29. Cosmetic surgery on knots

Author

Steven A. Bleiler, Jeffrey R. Weeks, and Craig D. Hodgson

Subjects
010308 nuclear & particles physics, 010102 general mathematics, Hyperbolic 3-manifold, Lens space, 57N10, 57M25, 57M50, Geometric Topology (math.GT), 01 natural sciences, Manifold, Homeomorphism, Combinatorics, Dehn twist, Dehn surgery, Mathematics - Geometric Topology, 0103 physical sciences, FOS: Mathematics, 0101 mathematics, Mathematics
Abstract

This paper concerns the Dehn surgery construction, especially those Dehn surgeries leaving the manifold unchanged. In particular, we describe an oriented 1-cusped hyperbolic 3-manifold X with a pair of slopes r_1, r_2 such that the Dehn filled manifolds X(r_1), X(r_2) are oppositely oriented copies of the lens space L(49,18), and there is no homeomorphism h of X such that h(r_1)=h(r_2)., 12 pages. Published copy, also available at http://www.maths.warwick.ac.uk/gt/GTMon2/paper2.abs.html

Published
1999

30. Blueshifts of the emission energy in type-II quantum dot and quantum ring nanostructures

Author

Robert J. Young, PM Paul Koenraad, EP Erwin Smakman, Peter J. Carrington, P. D. Hodgson, Manus Hayne, Anthony Krier, M. Ahmad Kamarudin, Qiandong Zhuang, Photonics and Semiconductor Nanophysics, and Semiconductor Nanostructures and Impurities

Subjects
010302 applied physics, Photoluminescence, Condensed matter physics, Chemistry, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Blueshift, Band bending, Orders of magnitude (time), Quantum dot, Excited state, 0103 physical sciences, 0210 nano-technology, Order of magnitude, Excitation
Abstract

We have studied the ensemble photoluminescence (PL) of 11 GaSb/GaAs quantum dot/ring (QD/QR) samples over >= 5 orders of magnitude of laser power. All samples exhibit a blueshift of PL energy, Delta E, with increasing excitation power, as expected for type-II structures. It is often assumed that this blueshift is due to band-bending at the type-II interface. However, for a sample where charge-state sub-peaks are observed within the PL emission, it is unequivocally shown that the blueshift due to capacitive charging is an order of magnitude larger than the band bending contribution. Moreover, the size of the blueshift and its linear dependence on occupancy predicted by a simple capacitive model are faithfully replicated in the data. In contrast, when QD/QR emission intensity, I, is used to infer QD/QR occupancy, n, via the bimolecular recombination approximation (I alpha n(2)), exponents, x, in Delta E alpha I-x are consistently lower than expected, and strongly sample dependent. We conclude that the exponent x cannot be used to differentiate between capacitive charging and band bending as the origin of the blueshift in type-II QD/QRs, because the bimolecular recombination is not applicable to type-II QD/QRs. (C) 2013 AIP Publishing LLC.

Published
2013
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31. Measurement of the mixing using the average electric charge of hadron-jets in ZO-decays

Author

A. Chan, W.S.C. Williams, R. Henriques, F. Pierre, A. Grant, P. Antilogus, C. Lambropoulos, G. Ekspong, P. Weilhammer, Winfried Mitaroff, P. N. Ratoff, S. Simonetti, A. Tsirou, M. Begalli, Louis Lyons, R. Aleksan, Demetrios Loukas, P. Frenkiel, P. Beltran, S. Katsanevas, N. Ershaidat, Chiara Mariotti, R. J. Apsimon, B. Ueberschaer, V. Gracco, A. Perrotta, J. Ridky, M. Karlsson, T. A. Filippas, S. O. Holmgren, F. Simonetto, Rupert Leitner, G. Piana, G. Matthiae, C. Bosio, J. J. Hernandez, J. Pennanen, Phillip Allport, Lucio Cerrito, G. Borisov, H. Schneider, T. Tabarelli, E. Lieb, S. C. Blyth, G. Wilkinson, M.D.M. De Fez Laso, G. Grosdidier, F. Stichelbaut, T. L. Hessing, R. Mc Kay, P. Baillon, S. Hahn, P. Collins, J. N. Jackson, M. Donszelmann, P. E S Nilsen, L. Bugge, A. J. Camacho Rozas, D. Z. Toet, P. Siegrist, A. G. Olshevski, V. Canale, H. Rahmani, J. Maillard, U. Haedinger, F. R. Cavallo, M. Regler, J. P. Engel, P. Morettini, M. V. Castillo Gimenez, F. Couchot, O. Toker, A. Andreazza, G. Damgaard, S. Braibant, Klaus Hamacher, A. Maio, Vladimir Cindro, S. Francon, I. Kronkvist, P. Niss, N. Neumeister, M. A. Winter, V. V. Lapin, R. Lauhakangas, B. Åsman, A. M. Zaitsev, F. Bianchi, R. Contri, C. Bourdarios, Tord Ekelof, H. Staeck, S. Marti, K. Kurvinen, E. Torassa, D. Fassouliotis, J. Fuster, E. Zevgolatakos, G. Sciolla, M. Berggren, P. Billoir, Fernand Grard, Pierre Juillot, Paolo Privitera, M. Mazzucato, P. Szymanski, C. De Clercq, W. J. Murray, D. Zontar, Alexander Lincoln Read, R. Barate, M. Szeptycka, Th D. Papadopoulou, B. Stugu, H. Mueller, L. Brillault, P. Delpierre, E. Daubie, M. Houlden, J. Blocki, L. Di Ciaccio, Jan Krolikowski, W. Bartl, P. Bambade, J. T.M. Chrin, M. Michelotto, R. Strub, Richard Jacobsson, A. Petrolini, M. J. Bates, C. Kreuter, B. Koene, P. A. M. Eerola, A. Cattai, B. De Lotto, Jacques Lemonne, B. Bouquet, H. Dijkstra, Daniel Bloch, Ahmimed Ouraou, E. Agasi, M. Wielers, Y. Arnoud, J. A. Valls Ferrer, G. Myatt, J. P. Laugier, W. Neumann, Evgueni Vlasov, A. C. Benvenuti, J. Richardson, F. L. Navarria, F. Parodi, M. Battaglia, G. Vegni, G. V. Mitselmakher, A. Hakansson, M. Mc Cubbin, D. J. Holthuizen, Pavlos Ioannou, W. D. Apel, L. O. Eek, R. C. Shellard, Josef Hrubec, P. Jalocha, O. Podobrin, W. Kucewicz, J. L. Fousset, D. Crennell, F. Mandl, Paolo Ronchese, E. Karvelas, K. Hultqvist, A. Budziak, A. Stocchi, Francisco Matorras, K. Korcyl, Tiziano Camporesi, C. Gaspar, D. Souza-Santos, R. Campion, H. Klein, A. Koch-Mehrin, Y. Sacquin, Andrei Nomerotski, J. Cuevas Maestro, A. M. Segar, V. Chorowicz, P. J. Holt, H. Briand, J. Lindgren, R. Sosnowski, N. G. Redaelli, Y. Dufour, H. Foeth, J. G. Loken, E. Rosso, J. Bjarne, Mogens Dam, F. Waldner, D. Treille, R. Keranen, K. Kulka, P. Vincent, Borge Svane Nielsen, J. P. Gerber, H. Borner, S. Nemecek, B. King, H. Burmeister, N. J. Kjaer, P. D. Dauncey, J. J. Lozano, S. De Brabandere, Wolfgang Adam, Krzysztof Doroba, Chiara Meroni, M. Verlato, S. Czellar, N. N. Khovanski, F. Fontanelli, U. Amaldi, G. Tristram, A. Daum, V. G. Timofeev, Mario Sannino, D. Bertrand, M. A. Lopez Aguera, L. Jonsson, P. Bruckman, J. C. Marin, T. Spassov, V. M. Golovatyuk, I. Hietanen, George Stavropoulos, C. Walck, Peter Kluit, F. Ledroit, M. Prest, A. V. Korytov, E. K. Johansson, D. Gamba, Stefano Ragazzi, G. Sajot, W. K. Van Doninck, F. Fulda-Quenzer, G. Barbiellini, E. Cortina, Yu. Belokopytov, P. Roudeau, C. Matteuzzi, V. Bocci, W. Trischuk, Steinar Stapnes, H. Wahlen, M. Pimenta, U. Mjoernmark, F. Naraghi, M. Hahn, S. D. Hodgson, M. Gandelman, T. Henkes, W. Hao, W. Krupinski, G. Polok, A. Elliot Peisert, L. Caroll, F. Cao, W. De Boer, M. Baubillier, A. Baroncelli, W. Ruckstuhl, Maciej Górski, P. N. Bogolubov, Paolo Checchia, B. Franek, J. Zúñiga, K. Moenig, M. Novak, B. Golob, T. Buran, Markus Elsing, A. G. Frodesen, D. Vilanova, R. Moeller, P. Van Dam, P. Langefeld, C. Petridou, V. Ruhlmann-Kleider, T. Maron, S. Schael, D. Edsall, G. Hamel de Monchenault, P. Poropat, L. Gorn, T. Rovelli, H. De Boeck, Matteo Pegoraro, M. Tyndel, K. H. Becks, B. Loerstad, I. Lippi, A. Algeri, R. Gokieli, J. Chauveau, R. Sekulin, A. Ferrer, Maria Roberta Monge, G. Cosme, P. V. Chliapnikov, R. Orava, Josef Strauss, G. E. Kalmus, J. H. Wickens, A. Tomaradze, Marco Paganoni, B. Jean-Marie, Patrick Jarry, G. Rinaudo, W. T. Meyer, J. Salt, L. K. Resvanis, S. J. Alvsvaag, Alessandra Romero, A. Ruiz, S. Haider, A. De Angelis, T. J V Bowcock, P. Gunnarsson, O. Tchikilev, P. Rebecchi, M. Espirito Santo, W. Venus, M. Davenport, M. A E Schyns, B. Boštjančič, A. Tilquin, A. Firestone, J. A. Hernando, J. Dahm, Cristian Stanescu, T. Moa, A. Buys, S. Tzamarias, Martino Margoni, E. Fokitis, M. Jonker, R. Zuberi, C. Caso, G. Jarlskog, P. Branchini, P. F. Honore, F. Richard, E. Spiriti, E. N. Tsyganov, Giovanni Crosetti, Olga Botner, A. Lopez-Fernandez, B. Dalmagne, R. Frühwirth, B. Tome, C. O. Higgins, J. Timmermans, J. Garcia, V. Lepeltier, P. Kokkinias, R. A. Brenner, O. Barring, H. Herr, Ugo Gasparini, H. B. Crawley, E. Vallazza, M. L. Turluer, M. Vollmer, A. Maltezos, Paolo Giacomelli, W. Da Silva, Massimo Caccia, M. Szczekowski, Fares Djama, L. Vitale, P. Abreu, D. Radojicic, R. C A Brown, Carmen García, Laurent Chevalier, P. Vaz, V. Chabaud, A. Markou, C. Ronnqvist, J. Guy, Vladimir Nikolaenko, M. Zito, V. Obraztsov, F. Hahn, J. A M A Buytaert, Tim Adye, Gianni Zumerle, Milos Lokajicek, M. Bozzo, M. Sessa, J. M. Brunet, T. Todorov, I. Roncagliolo, L. Pape, S. Plaszczynski, Allan Hallgren, A. Klovning, E. I. Rosenberg, N. I. Zimin, H. Pernegger, Manfred Krammer, Andre Augustinus, A. Zalewska, A. Wehr, V.A. Uvarov, L. S. Vertogradov, G. Skjevling, L. Tortora, F. J. Harris, P. S L Booth, D. Reid, A. P. Ostankov, J. W. Lamsa, K. Osterberg, A. N. Sisakian, F. Barao, Carlos Lacasta, A. Seitz, J. J. Gomez Y Cadenas, J. L. Contreras, E. Higon, R. Seufert, S. Bosworth, S. Almehed, F. Scuri, O. Ullaland, Javier Sánchez, Ivan Mikulec, J. Davies, P. Beilliere, E. Graziani, A. De Min, I. Siccama, L. Lanceri, Z. Hajduk, S. Ueberschaer, Luis Peralta, J. Medbo, P. Paganini, G. Wormser, R. Ehret, J. E. Augustin, I. A. Tyapkin, G. E. Theodosiou, Juan Abel Barrio, G. D. Alekseev, F. Verbeure, C. Bricman, G. Maehlum, P. H. Kramer, D. Y. Bardin, E. Gross, H. J. Hilke, F. Kapusta, M. Chapkin, A. Pullia, Danilo Zavrtanik, M. Feindt, K. A J Forbes, H. Furstenau, Ph Gavillet, S. Squarcia, G. Valenti, Tuure Tuuva, Clara Troncon, P. Herquet, R. Pain, Manolis Dris, M. S. Bilenky, P. Lutz, C. De La Vaissiere, T. Hofmokl, K. D. Brand, J. Straver, M. Los, G. A. Chelkov, M. van der Heijden, Gary John Barker, K. Woschnagg, V. Pozdniakov, M. E. Pol, M. Pernicka, V. Hedberg, Jesus Marco, G. Lenzen, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, E. C. Katsoufis, G. Gopal, B. Muryn, J. M. Levy, P. Negri, A. S. Vodopyanov, M. Bonesini, Dietrich Liko, Ph Charpentier, Kathy Huet, T. Bolognese, M. Voutilainen, B. A. Khomenko, W. Bonivento, Kerem Cankocak, B. Grossetete, F. Carena, M. Reale, M. Bigi, V. Vrba, Marcos Dracos, F. Dupont, H. Palka, P. S. Iversen, Nikita Smirnov, I. V. Ajinenko, L. Mirabito, L. G. Tkatchev, C. Martinez-Rivero, J. Drees, Evangelos Gazis, O. Kouznetsov, H. Saarikko, Natale Demaria, George Kalkanis, P. B. Renton, D. C. Fries, O. Smirnova, Rosy Nicolaidou, Marta Calvi, D. Gillespie, Geoffrey Smith, A. Passeri, C. Defoix, R. Mc Nulty, J. Van Eldik, T. S. Hill, G. W. Van Apeldoorn, L. Ventura, R. Lindner, Y. Lemoigne, A. Lipniacka, J. Dolbeau, M. Weierstall, G. Smadja, Christine Kourkoumelis, E. Dahl-Jensen, J. H. Koehne, C. Vander Velde, A. M. Wetherell, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Elementary particle, 01 natural sciences, b-tagging, Electric charge, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract

From the data recorded with the DELPHI detector at LEP in the years 1991–1992, 46497 events were selected having a high-momentum muon in hadron jets. A fit to the average electric charge sum of the jets recoiling against a b-quark jet tagged by a high-PT muon results in an average mixing parameter of View the MathML source.

Published
1994

32. A measurement of the tau lifetime

Author

C. Gaspar, S. Francon, M. Jonker, A. B. Fenyuk, Andrea Perrotta, W. Da Silva, E. Graziani, M. Crozon, R. Mc Nulty, P. Vaz, Luis Peralta, E. Dahl-Jensen, F. Simonetto, P. Abreu, G. Smadja, T. Maron, O.M. Kouznetsov, C. Bricman, A. Elliot Peisert, M. Fernandez Alonso, M. Bozzo, A. Pullia, V. Obraztsov, C. Vander Velde, Stefano Ragazzi, A. Hakansson, V. Lepeltier, D. Vilanova, P. Van Dam, J-C. Marin, M. Szeptycka, Rupert Leitner, J. Kesteman, G. D. Alekseev, G. Darbo, B. Jean-Marie, N. Ershaidat, G. Skjevling, M. Mc Cubbin, A. Hallgren, K. Hultqvist, Georgios Stavropoulos, M. Tyndel, T.A. Filippas, K. Woschnagg, T. Todorov, F. Mandl, Ph. Gavillet, I. Lippi, L. Mathis, H. P. Borner, Stefan Schael, H. Furstenau, A. Ferrer, O. Tchikilev, M. Voutilainen, G. Grosdidier, A. Rybin, F. Carena, Louis Lyons, Juan Abel Barrio, J.E. Hooper, B. Loerstad, V. Lapin, M.A.E. Schyns, A. N. Sisakian, M. A. Winter, M. Dracos, P. V. Chliapnikov, R. Aleksan, B. Bostjancic, A. Daum, L. K. Resvanis, U. Gasparini, M. Davenport, A. Romero, B.S. Nielsen, O. Botner, Guido Barbiellini, J. Guy, Tim Adye, M. Richardson, Claire Bourdarios, J. P. Gerber, W.S.C. Williams, T. Henkes, B. De Lotto, Evgueni Vlasov, M. Szczekowski, M. Koratzinos, Maria Elena Pol, S. Katsanevas, J.-E. Augustin, W.A. Mitaroff, H. Burmeister, D. Y. Bardin, R. Fruhwirth, A. Ruiz, C. Defoix, M. Witek, H. Herr, G. W. Van Apeldoorn, P. F. Honore, G. Rinaudo, R. Campion, Massimo Caccia, J. T.M. Chrin, Vladimir Nikolaenko, Itzhak Roditi, R. Pain, L. G. Tkatchev, G. Leder, A. Seitz, J. Timmermans, G. Sciolla, Y. Lemoigne, J. Werner, H. Pernegger, W. K. van Doninck, M. Margoni, M. Michelotto, C. J. Beeston, K. Kulka, Robert S. Brown, E. Cortina, D. Johnson, R. Ehret, H. Staeck, B. Nijjhar, J. Davies, A. Baroncelli, P. Jalocha, H. Saarikko, O. Podobrin, A. Wehr, V. Canale, M.A. Lopez Aguera, Francesca Romana Cavallo, P. Niss, S. Tzamarias, Eugene P. Gross, A. Chan, B. Dalmagne, E. Rosso, H. Klein, T. S. Spassoff, L. Ventura, M.P. Clara, A. De Min, I. Siccama, T. Tabarelli, M. Dris, U. Kruener-Marquis, W. Ruckstuhl, W.T. Meyer, Mitchell Wayne, I. Hietanen, Laurent Chevalier, M. Houlden, M. Mazzucato, F. Hahn, H. Mueller, G. Sajot, V. Chorowicz, P.H. Kramer, E. Lieb, K. Osterberg, F. Parodi, J. J. Gomez Y Cadenas, F. Richard, R. Sekulin, J. Hrubec, G. Wormser, L. Tortora, G. A. Chelkov, D. Bertrand, K. Huet, Patrick Jarry, P. Beltran, K. Doroba, K. Korcyl, P. N. Bogolubov, Christine Kourkoumelis, C. Lambropoulos, Ugo Amaldi, Ariella Cattai, J. Salt, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, W. J. Murray, C. Matteuzzi, Milos Lokajicek, T.E. Pettersen, A. Maio, M. Los, M. Hahn, M. van der Heijden, K.A.J. Forbes, C. Stanescu, C.O. Higgins, P. Morettini, F. Ledroit, F. Fulda-Quenzer, B. Golob, J. Cuevas Maestro, R. Strub, A. Petrolini, N. J. Kjaer, V. Kostioukhine, R. Moeller, J. Krolikowski, T. Moa, R. Holmes, Pierre Juillot, B. Koene, S. Almehed, S. Gumenyuk, M. Karlsson, O. Ullaland, Leif J. Jönsson, E.C. Katsoufis, Alberto Benvenuti, M. Pegoraro, G. Sette, P.S.L. Booth, M. Regler, S. Marti, G. Matthiae, E.N. Gazis, K.-H. Becks, R. Contri, P. Yepes, A. Maltezos, A. Firestone, E. Spiriti, P. Frenkiel, S. Simonetti, G. Polok, G. Cosme, S. J. Alvsvaag, E. Agasi, Tiziano Camporesi, G. Damgaard, Richard Brenner, F. J. Harris, Fares Djama, H. Briand, G.J. Barker, George Kalkanis, P. B. Renton, S. Squarcia, N. G. Redaelli, R. Lindner, Carlos Lacasta, G. Vegni, D. Fassouliotis, William Trischuk, A. Markou, J. G. Loken, H. Foeth, G. Maehlum, M. L. Turluer, E. Vallazza, D. Liko, N. Demaria, G. Hamel de Monchenault, T. Ekelof, N. Brummer, B. Franek, Tiziano Rovelli, D. Reid, D. C. Fries, Paula Eerola, S. Stapnes, J. Straver, R. J. Apsimon, P. Privitera, K. Kurvinen, M. Verlato, F. Waldner, S. Braibant, V. Chabaud, Javier Sánchez, D. J. Holthuizen, S. Ueberschaer, M. Weierstall, H.B. Crawley, D. Zavrtanik, R. Mc Nay, C. Walck, Marta Calvi, R. Barate, G. E. Kalmus, W. Venus, Guenakh Mitselmakher, J. J. Hernandez, P. O. Hulth, C. Ronnqvist, Z. Hajduk, W. Hao, O. Barring, S. Haider, A. P. Ostankov, F. Couchot, P. Delpierre, F. Cao, A. Tilquin, P. Grosse-Wiesmann, A. De Angelis, G. Gopal, E. Fokitis, A. Zalewska, Geoffrey Smith, P. Collins, P. Herquet, M. Gorski, P. Checchia, A. G. Olshevski, M. Dam, E. Daubie, G. Crosetti, P. Poropat, Chariclia Petridou, Andromachi Tsirou, P. Vincent, Daniel Bloch, O. Pingot, G. Lenzen, Mario Sannino, B. Bouquet, D. Souza-Santos, I. Kronkvist, P. Ronchese, P. Roudeau, J. Maillard, S. Rossi, V. G. Timofeev, J. Chauveau, F. Bianchi, Andre Augustinus, J.N. Jackson, Ahmimed Ouraou, V.M. Golovatyuk, F. Barao, Y. Sacquin, G. Myatt, Luc Pape, V. Gracco, G. Borisov, R. Orava, M. Berggren, M. J. Bates, E. Higon, R. Seufert, R. Gokieli, S. Bosworth, Bruno Schulze, F. Scuri, Daniel Treille, S. D. Hodgson, T. Buran, A. M. Wetherell, A.L. Read, A. M. Zaitsev, Alexander Vodopyanov, E. G. Anassontzis, J. P. Engel, P. Bambade, M. V. Castillo Gimenez, Wolfgang Adam, L. Lanceri, Stéphane Plaszczynski, M.R. Monge, J. Dolbeau, G. Voulgaris, Laurent Mirabito, L. Di Ciaccio, A. Lipniacka, C. De Clercq, E.I. Rosenberg, R. Zuberi, U. Rossi, E. Karvelas, B. King, Paolo Giacomelli, B. Stugu, F. Stichelbaut, Pavlos Ioannou, A. Passeri, Yu. Belokopytov, M. Zito, Carmen García, Klaus Moenig, I. Mikulec, I. Roncagliolo, Juan Fuster, R. Sosnowski, U. Haedinger, J. Lindgren, L. Carroll, J. M. Levy, G. Zumerle, E.N. Tsyganov, Marco Paganoni, Jose Luis Contreras, P. Branchini, M. Feindt, P. Negri, H. Schneider, Göran Jarlskog, D. Radojicic, Jan Ridky, J. Strauss, L.-O. Eek, B. Grossetete, W. D. Apel, Th D. Papadopoulou, R. Lauhakangas, Ph. Charpentier, H. Wahlen, G. Zhang, M. Sessa, M. S. Bilenky, W. Bartl, M. Donszelmann, A. Koch-Mehrin, P. Weilhammer, P. Billoir, T. Lesiak, Peter M. Allen, M. Pimenta, B. A. Khomenko, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, Fernand Grard, D. Crennell, T. Hofmokl, W. Kucewicz, M. Vollmer, D. Gamba, J. J. Lozano, Chiara Meroni, Jan Buytaert, D. Benedic, Peter Kluit, A. Klovning, H. De Boeck, I.A. Tyapkin, Y. Arnoud, U. Mjoernmark, J. Garcia, F. Dupont, Andrey Korytov, N. N. Khovanski, P. Lutz, J. A. Valls Ferrer, J.-M. Brunet, J. P. Laugier, J. Bjarne, B. Tome, P. Antilogus, Demetrios Loukas, G. Valenti, F. Pierre, Vincent Hedberg, G. Ekspong, P. N. Ratoff, M. Begalli, J.W. Lamsa, S. O. Holmgren, C. Bosio, H. J. Hilke, K.D. Brand, M. Pernicka, L. S. Vertogradov, L. Chaussard, L. Vitale, A. Algeri, R. Zukanovich Funchal, J.H. Wickens, J. Drees, O. Toker, E. Torassa, R. C. Shellard, Ariel Goobar, G. E. Theodosiou, J. H. Koehne, A. M. Segar, P. S. Iversen, T.L. Hessing, S. C. Blyth, G. Meola, G. Wilkinson, F. Kapusta, V. Ruhlmann-Kleider, P. Beilliere, M.D.M. De Fez Laso, V.A. Uvarov, G. Tristram, J. Marco, A. Andreazza, Paul Baillon, P. Kokkinias, P. David, J. Lemonne, M. Battaglia, R. Keranen, Francisco Matorras, N. Yamdagni, Y. Dufour, U. Trevisan, P. D. Dauncey, Sandor Czellar, H. Rahmani, P. Zalewski, P. Szymanski, K. Hamacher, A.J. Camacho Rozas, A. Grant, V. Vrba, Hans Dijkstra, K. Furnival, M. Bonesini, T. Bolognese, W. Bonivento, V. Bocci, E. K. Johansson, M. Baubillier, J.-L. Fousset, T.J.V. Bowcock, D. Z. Toet, P. Siegrist, L. Cerrito, L. Bugge, A. Lopez-Fernandez, F. Fontanelli, F. Verbeure, Tuure Tuuva, Clara Troncon, C. De La Vaissiere, J. Pennanen, N. I. Zimin, A. G. Frodesen, 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), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo

Subjects
Physics, Coupling constant, Particle physics, Argus, Nuclear and High Energy Physics, Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Decay length, LEPTONS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Física nuclear, Combined result, 010306 general physics, computer, Particle Physics - Experiment, Fermi Gamma-ray Space Telescope, Lepton, computer.programming_language
Abstract

The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three measurements using one prong decays are combined, accounting for correlations, resulting in tau(tau) = 298 +/- 7 (stat.) +/- 4 (syst.) fs while the decay length distribution of three prong decays gives tau(tau) = 298 +/- 13 (stat.) +/- 5 (syst.) fs. The combined result is tau(tau) = 298 +/- 7 fs. The ratio of the Fermi coupling constant from tau decay relative to that from muon decay is found to be 0.985 +/- 0.013, compatible with lepton universality.

Published
1993
Full Text
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33. Determination of 55-155-155-1in second order QCD from hadronic Z decays

Author

N. Vishnevsky, P. Negri, C. Gaspar, Rupert Leitner, J. Dolbeau, Z. Hajduk, W. Kucewicz, H. Foeth, D. Husson, Tiziano Camporesi, G. Cosme, P. Bambade, P.S.L. Booth, R. J. Apsimon, A. Letessier-Selvon, P. Herquet, Maciej Górski, I. A. Tyapkin, C. Caso, N. G. Redaelli, W. D. Apel, J. Garcia, R. Contri, T. Tabarelli, M. Bonapart, T. P. A. Åkesson, P. Grosse-Wiesmann, A. De Angelis, M. Davenport, A. Hakansson, P. Collins, D. Delikaris, K. Rybicki, Marco Bozzo, G. Hamel de Monchenault, Josef Strauss, S. Braibant, W. Venus, I. Kronkvist, G. Meola, E. Lieb, J. Werner, A. Campion, N. Magnussen, M. Fernandez Alonso, D. Y. Bardin, Dietrich Liko, Daniel Bloch, P. Frenkiel, P. Ioannou, G. E. Theodosiou, M. P. Clara, Louis Lyons, A. Markou, D. Fassouliotis, Ahmimed Ouraou, V.M. Golovatyuk, G. Kalmus, P. Kluit, W. Dulinski, F. Waldner, M. Houlden, P. V. Chliapnikov, Manolis Dris, George Kalkanis, S. C. Blyth, V. Obraztsov, A. Baroncelli, P. B. Renton, S. Dagoret, F. Ledroit, Jacques Lemonne, E. N. Tsyganov, R. Sekulin, N.I. Zimin, M.D.M. De Fez Laso, R. McNulty, B. De Lotto, S. Volponi, Itzhak Roditi, A. Chan, D. C. Fries, E. Lillethun, M. Karlsson, O. Ullaland, C. O. Higgins, J. J. Hernandez, P. Van Dam, Daniel Treille, D. J. Holthuizen, M. T. Trainor, Stefaan Tavernier, A. M. Wetherell, W.S.C. Williams, Guido Barbiellini, E. C. Katsoufis, Mario Sannino, G. Maehlum, I. Roncagliolo, Renato Turchetta, J. E. Hooper, K. Furnival, Y. Sacquin, Marta Calvi, Demetrios Loukas, U. Trevisan, M. Kopf, M. A. Lopez Aguera, Geoffrey Smith, J. Guy, G. Stavropoulos, M. Pimenta, C. De La Vaissiere, V. Chorowicz, R. Lauhakangas, V. Kostiukhin, Tim Adye, J. Lindgren, Chiara Meroni, G. W. Van Apeldoorn, P. Weilhammer, Evangelos Gazis, A. G. Olshevski, G. Grosdidier, L. Chaussard, Wolfgang Adam, M. Crozon, B. Franek, R. Zitoun, Jon Christopher Wikne, J. P. Gerber, Francesca Romana Cavallo, Mitchell Wayne, L. Ventura, M. Sessa, Edoardo Castelli, G. D. Alekseev, E. Torassa, Alessandra Romero, Marc Winter, Paul Baillon, O. Toker, A. Tilquin, S-O. Holmgren, H. Furstenau, R. Lindner, F. Fulda-Quenzer, Y. Lemoigne, V. V. Lapin, M. Szeptycka, R. Orava, A. Ruiz, J. Kesteman, Barry King, F. Pierre, M. Dracos, G. Matthiae, E. Spiriti, P. N. Ratoff, Yu. Belokopytov, M. Donszelmann, B. Bouquet, P. Abreu, J. G. Loken, M. A E Schyns, Tiziano Rovelli, E. Graziani, C. De Clercq, J. A. Valls Ferrer, W. J. Murray, G. Wormser, Pieter David, A. Zalewska, T. S. Spassoff, J. M. Brunet, C. Troncon, P. Allen, P. F. Honore, L. Jonsson, M. Weierstall, M. Pernicka, M. Feindt, R. Frühwirth, W. T. Meyer, J. Timmermans, M. S. Bilenky, Maria Elena Pol, K. Hultqvist, A. N. Sissakian, W. Trischuk, M. De Beer, G. Ekspong, A. Lipniacka, P. N. Bogolubov, M. Mazzucato, I. Hietanen, Eilam Gross, Ariella Cattai, U. Gasparini, Ariel Goobar, Klaus Hamacher, J. H. Koehne, B. Nijjhar, Jesus Marco, R. Strub, S. Katsanevas, W. Krupinski, K. A. J. Forbes, S. D. Hodgson, R. Llosa, G. Sette, C. Ronnqvist, A. Elliot Peisert, G. Zhang, M. Bonesini, E. Dahl-Jensen, A. P. Ostankov, P. Szymanski, M. Koratzinos, Giovanni Darbo, T. Buran, A. Passeri, M. Berggren, U. Kruner-Marquis, T. A. Filippas, M. Schaeffer, L. Bugge, A. Augustinus, T. Bolognese, H. De Boeck, S. Simonetti, B. Jean-Marie, M. Begalli, C. J. Beeston, K. H. Becks, C. Kourkoumelis, E. Vallazza, Th. D. Papadopoulou, Guenakh Mitselmakher, R. A. Brenner, M. Pegoraro, J. Maillard, W. Bonivento, P. Yepes, B. Koene, N. Brummer, P. Vaz, Luc Pape, S. Haider, B. Boštjančič, V. Perevozchikov, C. Vander Velde, S. J. Alvsvaag, Stefano Ragazzi, G. Smadja, Olga Botner, Krzysztof Korcyl, Lucio Cerrito, Gueorgui Chelkov, A. Lounis, V. Vrba, F. Couchot, H. Mueller, M. Battaglia, C. Lambropoulos, Ugo Amaldi, P. Jalocha, Carmen García, H. P. Borner, S. Squarcia, R. Holmes, H. Saarikko, José Salt, P. Billoir, A. Pullia, W. De Boer, E. Zevgolatakos, F. Cao, J. Bjarne, Paolo Morettini, W. Mitaroff, Stefan Schael, D. Johnson, M. Tyndel, P. Zukanovich Funchal, Y. Dufour, S. Überchär, P. Antilogus, T. Henkes, G. Crosetti, Evgueni Vlasov, P. D. Dauncey, Sandor Czellar, T. Kreuzberger, P. Beilliere, M. Turala, M. Paganoni, W. Klempt, F. Hahn, G. Galeazzi, G. Polok, A. Koch-Mehrin, A. Tomaradze, Cristian Stanescu, P. Branchini, Mogens Dam, H. Herr, W. K. Van Dominck, Martino Margoni, F. Stichelbaut, M. Regler, D. Zavrtanik, F. Adami, E. Fokitis, E. I. Rosenberg, S. Vlassopoulos, H. Schneider, A. Fenyuk, R. Keranen, R. Sosnowski, O. Barring, Francisco Matorras, N. Yamdagni, F. Naraghi, V. G. Timofeev, Piotr Zalewski, L. Mathis, B. Dalmagne, Laurent Chevalier, V.A. Uvarov, Milos Lokajicek, V. Ruhlmann, V. Ronjin, F. Simonetto, Fernand Grard, H. Palka, G. Skjevling, D. Crennell, F. Mandl, J. W. Lamsa, B. W. Heck, A. J. Camacho Rozas, Antonio Ferrer, F. Barao, I. Lippi, L. Tortora, F. J. Harris, D. Z. Toet, J. H. Wickens, B. Muryn, Jose Luis Contreras, F. Kapusta, P. Siegrist, E. Higon, R. Seufert, Carlos Lacasta, F. Scuri, H. Briand, D. Wormald, K. Oesterberg, L. Vitale, L. S. Vertogradov, L. Lanceri, M. McCubbin, D. Radojicic, Jan Ridky, T. Hofmokl, Marek Szczekowski, P. Borgeaud, A. Tsirou, Guy Wilkinson, B. A. Khomenko, Paolo Ronchese, N. J. Kjaer, D. Isenhower, E. Rosso, H. Klein, N. De Groot, P. Kokkinias, P. Lutz, T. B. Skaali, A. Stocchi, D. Bertrand, V. Bocci, Francesco Navarria, C. Defoix, J. Zúñiga, G. Tristram, Paula Eerola, P. Folegati, R. McKay, W. Ruckstuhl, M. R. Monge, R. Barate, P. O. Hulth, E. K. Johansson, A. Firestone, J. Sanchez, Goeran Jarlskog, T. Maron, P. Delpierre, H. Wahlen, E. Daubie, Ph. Charpentier, P. Beltran, P. H. Kramer, M. Vollmer, U. Rossi, Paolo Giacomelli, S. Delorme, K. Woschnagg, L.J. Carroll, B. Grossetete, Allan Hallgren, Giovanni Valenti, G. Myatt, M. Richardson, A. Perrotta, H. J. Hilke, Tord Ekelof, H. Staeck, G. Gopal, M. Chapkin, Jose M. Benlloch, A. Grant, V. Nikolaenko, G. Borisov, A. Klovning, U. Mjoernmark, C. Bosio, E. J. Sanchez, P. Roudeau, M. Baubillier, Hans Dijkstra, A. De Min, P. Privitera, Joao Varela, M. J. Bates, F. Carena, M. Jonker, B. Loerstad, G. Leder, F. Bianchi, D. Gamba, J. J. Gomez Y Cadenas, G. Voulgaris, V. Canale, Andrey Korytov, M. Los, V. Lepeltier, A. S. Vodopyanov, O. Doll, R. Pain, C. Walck, Paolo Checchia, G. Vegni, Ph. Gavillet, T. Moa, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, W. Bartl, H. Burmeister, Alexander Lincoln Read, J. P. Laugier, Claire Bourdarios, J. Cuevas Maestro, Juan Fuster, A. Maltezos, Robert S. Brown, Flavio Fontanelli, Borge Svane Nielsen, J. J. Lozano, T. Todorov, J. A M A Buytaert, A. Lopez-Fernandez, F. Verbeure, Krzysztof Doroba, C. Bricman, D. Benedic, J. Drees, M. L. Turluer, D. Reid, Tuure Tuuva, M. Michelotto, Gianni Zumerle, M. Zito, Patrick Jarry, A. Wehr, G. Rinaudo, Alexander Zaitsev, R. Moeller, J. N. Jackson, B. Åsman, Roberto Cirio, L. K. Resvanis, J. Chauveau, K. Kurvinen, B. Uberschar, J. Krstic, K. D. Brand, J. Pennanen, Massimo Caccia, P. Juillot, F. Djama, P. Poropat, L. O. Eek, R. C. Shellard, Josef Hrubec, A. M. Segar, Mikko Voutilainen, P. S. Iversen, L. G. Tkatchev, D. Vilanova, J-C. Marin, R. Gokieli, Spyros Tzamarias, O. Tchikilev, Klaus Mönig, G. Lenzen, J. E. Augustin, H. B. Crawley, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, N. Demaria, G. Damgaard, O. Pingot, V. Gracco, W. Da Silva, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, S. Marti, G. Sajot, and A. G. Frodesen

Subjects
Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, High Energy Physics::Phenomenology, 01 natural sciences, Hadronization, Renormalization, 0103 physical sciences, High Energy Physics::Experiment, Perturbation theory (quantum mechanics), 010306 general physics, Parton shower, Engineering (miscellaneous), Event (particle physics)
Abstract

Distributions of event shape variables obtained from 120600 hadronic Z decays measured with the DELPHI detector are compared to the predictions of QCD based event generators. Values of the strong coupling constant αs are derived as a function of the renormalization scale from a quantitative analysis of eight hadronic distributions. The final result, αs(MZ), is based on second order perturbation theory and uses two hadronization corrections, one computed with a parton shower model and the other with a QCD matrix element model. © 1992 Springer-Verlag.

Published
1992

34. Search for scalar leptoquarks from Z$^0$ decays

Author

J. Marco, G. E. Theodosiou, H. De Boeck, S. Volponi, G. V. Mitselmakher, W. Venus, F. Pierre, I. Lippi, E. Lillethun, A. S. Vodopyanov, D. Z. Toet, U. Mjoernmark, N. Demaria, D. Y. Bardin, Maria Elena Pol, S. C. Blyth, T. Buran, T. Moa, R. Dzhelyadin, Jose Luis Contreras, F. Grard, L. G. Tkatchev, J. M. Benlloch, Marc Winter, D. Gamba, L. O. Eek, R. C. Shellard, H. Mueller, G. A. Chelkov, N. Vishenevsky, U. Nau-Korzen, Paul Baillon, C. Matteuzzi, U. Trevisan, G. Lenzen, Torsten Paul Ake Åkesson, E. Spiriti, M. Feindt, A. M. Segar, S. Ueberschaer, G. Kalmus, A. Markou, U. Kruener-Marquis, G. Maehlum, A. Augustinus, M. L. Turluer, C. O. Higgins, P. Bambade, G. Wormser, Mario Sannino, P.S.L. Booth, P. N. Ratoff, B. Bouquet, G. Kalkanis, M.A. Lopez Aguera, Francesca Romana Cavallo, S. Tavernier, M. Pimenta, M. S. Bilenky, G. Matthiae, B. De Lotto, M. J. Bates, P. B. Renton, M. Voutilainen, A. Lopez-Fernandez, D. Radojicic, F. Naraghi, B. Franek, G. Damgaard, G. Crosetti, A. Hakansson, A. Tomaradze, D. Vilonava, N. G. Redaelli, A. Ruiz, J. Hrubec, Göran Jarlskog, A. Baroncelli, M. Gorski, C. Bosio, H. J. Hilke, J. Garcia, A. V. Korytov, D. C. Fries, M. Pernicka, C. De Clercq, M. Koptf, Tord Ekelof, Clara Troncon, R. Holmes, I. Herbst, V. Nikolaenko, R. Pain, William Trischuk, N. Smirnov, B. Grossetete, G. Barbiellini, M. Zito, Itzhak Roditi, K. Doroba, M. De Beer, P. Antilogus, I. Kronkvist, W. Bartl, W. J. Murray, V. Perevozchikov, J. G. Loken, Borge Svane Nielsen, E. C. Katsoufis, P. Beilliere, M. H. Gros, R. Oraya, L. Lanceri, A. Zaitsev, P. Morettini, Jan Buytaert, S. Simonetti, C. Lambropoulos, Ugo Amaldi, A. Ouraou, W.S.C. Williams, W. D. Apel, R. Mc Kay, M. Calvi, J. Pyyhtia, H. B. Crawley, A. Zalewsky, G. Grosdidier, S. Ragazzi, P. Lutz, P. Negri, E. Higon, J. Ridky, E. Vallazza, D. Zavrtanik, W. De Boer, E. Zevgolatakos, L. Bugge, D. Benedic, Tiziano Rovelli, J-C. Marin, Winfried A Mitaroff, E. N. Tsyganov, C. De La Vaissiere, G. Stavropoulos, A. De Min, M. Bonapart, I. Roncagliolo, M. Baubillier, P. Jalocha, G. Sajot, R. Moeller, F. Fontanelli, S. Katsanevas, T. B. Skaali, V. Graco, R. Barate, P. Folegati, A. G. Frodesen, Andrea Perrotta, R. Keranen, R. Sekulin, M. A E Schyns, A. Elliot Peisert, B. Koene, B. Loerstad, G. W. van Apeldoorn, K. Rybicki, H. Staeck, T. Kreuzberger, V. M. Golovatyuk, Philippe Charpentier, J. Krstic, K. D. Brand, B. Åsman, O. Barring, P. F. Honore, P. Abreu, E. N. Gazias, J. H. Wickens, W. Bonievento, J. W. Lamsa, W. T. Meyer, C. Kourkoumelis, J. N. Jackson, M. Mazzucato, H. Burmeister, C. Stanescu, M. Crozon, P. D. Dauncey, F. Stichelbaut, Francesco Navarria, J. J. Y. Cadenas, M. R. Monge, F. Simonetto, T. A. Filippas, F. Couchot, I. A. Tyapkin, G. Meola, F. Carena, R. Lauhakangas, E. Castelli, R. Llosa, M. Bozzo, H. Palka, Juan Fuster, N. De Groot, J. Bjarne, B. Jean-Marie, J. Guy, M. Dris, R. A. Benner, A. Letessier-Selvon, M. Donszelmann, M. Szczekowski, R. Zitoun, Robert S. Brown, E. I. Rosenberg, S. Dagoret, M. P. Clara, M. Davenport, N. Brummer, E. K. Johansson, G. Zhang, O. Pingot, A. Kloving, M. Michelotto, W. Klempt, P. Van Dam, R. Mc Nulty, P. Vaz, P. Ioannou, A. Passeri, E. Vlasov, Louis Lyons, G. Rinaudo, N. Yamdagni, D. Johnson, G. Leder, M. Turala, C. J. Beeston, P. Borgeaud, J. Lemonne, B. Boštjančič, D. Liko, K. Korcyl, Tiziano Camporesi, D. Crennell, C. Walck, G. Cosme, P. Billoir, W. Kucewicz, F. Matorras, D. Isenhower, Y. Lemoigne, M. Fernandez Alonso, P. Allen, F. Ledroit, F. Kapusta, H. Furstenau, A. L. Nead, M. Koratzinos, Renato Turchetta, M. Tyndel, J. Lindgren, M. Jonker, Luc Pape, E. Lieb, A. M. Wetherell, A. Lounis, P. S. Iversen, L. Di Ciaccio, T. Papadopoulou, G. Gopal, C. Ronnqvist, D. Husson, P. Szymanski, J. M. Brunet, F. Cao, M. Szeptycka, L. S. Vertogradov, G. Myatt, H. P. Borner, Stefan Schael, W. Krupinski, M. Battaglia, R. Fruhwirth, T. Hofmokl, B. W. Heck, Y. Belokopytov, M. Los, G. Galeazzi, L. Cerrito, D. Fassouliotis, A. Ostankov, J. Krolikowski, S. Squarcia, Jamal Eddine Derkaoui, T. Henkes, Barry King, A. Campin, I. Hietanen, R. Suefert, L. Tortora, L. K. Resvanis, Demetrios Loukas, Matteo Pegoraro, Patrick Jarry, A. Firestone, Ariella Cattai, G. Vegni, K. W. Glitza, G. Polok, A.J. Camacho Rozas, Y. Dufour, B. Ueberschaer, J. P. Gerber, Eugene P. Gross, A. Tilquin, Martino Margoni, D. Bertrand, M. Schaeffer, S. J. Alvsvaag, Paolo Ronchese, J. Wikne, N. J. Kjaer, E. Anassontzis, G. R. Wilkinsi, V. Lepeltier, P. Herquet, Paolo Checchia, P. Kokkinias, C. Caso, F. Walder, J. J. Lozano, P. H. Koehne, Ph. Gavillet, H. Wahlen, A. Pullia, N. N. Khovanski, B. Dalmagne, Laurent Chevalier, O. Ullaland, J. A. Valls Ferrer, V. Vrba, E. Rosso, H. Klein, B. Nijjhar, H. Herr, A. Ferrer, L. Ventura, L. Jonssan, Ugo Gasparini, V. Chorowicz, S. Haider, P. Poropat, G. R. Smidth, P. Siegrist, E. Dahl-Jensen, P. Frenkiel, S. Braibant, Paula Eerola, K. Hultqvist, C. Bricman, V. Ruhlmann, Y. Obraztsov, P. Delpierre, V. A. Uvarov, V. Canale, Milos Lokajicek, H. Forsbach, A. Romero, R. J. Apsimon, S. Vlassopoulos, F. Mandl, L.J. Carroll, J. Cuevas Maestro, Meinhard Regler, G. Darbo, G. Sette, G. D. Alekseev, S. Tzamarias, M. Sessa, Tim Adye, J. Strauss, J. Maillard, P. Yepes, F. J. Harris, P. David, M. D. M. de Fez Laso, J. Salt, A. N. Sissakian, K. Kurvinen, J. Zuniga, P. Privitera, M. Berggren, F. Fulda-Quenzer, M. T. Trainor, A. Lipniacka, T. Todorov, A. G. Olshevski, S. O. Holmgren, U. Rossi, C. Vander Velde, Carlos Lacasta, M. Mc Cubbin, P. Giamocelli, E. Fokotis, E. Daubie, Javier Sánchez, P. Weilhammer, S. Delorme, G. Garbo, K. Kurnival, A. Chan, K. Woschnagg, G. Skjevling, V. G. Timofeev, F. Adami, M. Dracos, P. O. Hulth, J. E. Hooper, P. Zalewski, K. A. J. Forbes, S. D. Hodgson, T. Tabarelli, J. Kesteman, Z. Hajduk, T. Bolognese, K. Hamacher, Allan Hallgren, Giovanni Valenti, J. J. Hernandez, M. Chapkin, A. Grant, L. Mathias, Daniel Treille, R. Contri, M. V. Castillo Gimenez, Hans Dijkstra, S. Marti, E. Menichetti, Gösta Ekspong, Olga Botner, R. Cirio, K. H. Beckes, V. Bocci, G. Voulgaris, Carmen García, Massimo Caccia, H. Foeth, T. S. Spassoff, R. Zukanovich Funchal, R. Lucock, J. Varela, P. Juillot, T. Tuuva, F. Djama, J. Drees, P. Grosse-Wiesmann, A. De Angelis, P. Collins, D. Delikaris, Daniel Bloch, W. Adam, Y. Sacquin, Mogens Dam, E. Sanchez, L. Vibert, P. Branchini, M. Vollmer, H. Schneider, G. Smadja, D. Holthuizen, J. Dolbeau, F. Bianchi, J. Werner, P. Roudeau, C. Meroni, V. Kostiukhin, F. Verbeure, R. Sosnowski, R. Gokieli, J. P. Laugier, F. Richard, M. Hahn, S. Czellar, S. Almehed, F. Hahn, H. Saarikko, J. P. Engel, B. A. Khomenko, W. Dulinski, Klaus Moenig, M. A. Houlden, J. E. Augustin, V. Lapin, M. Bonesini, D. Wormald, P. Chliapnikov, G. Tristram, W. K. van Doninck, P. Astier, C. Defoix, A. Goobar, W. Ruckstuhl, P. Beltran, M. Begalli, N. I. Zimin, M. Richardson, Achille Stocchi, M. Boratav, E. Graziani, M. Wayne, G. Hamel De Monchenault, D. Reid, Gianni Zumerle, Andromachi Tsirou, J. Timmermans, P. N. Bogolubov, F. Barao, 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Abreu, P., Adam, W., Canale, Vincenzo, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
Quark, Library, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Digitisation, Archive, 01 natural sciences, JET FRAGMENTATION, PHYSICS, Nuclear physics, HADRONIC DECAYS, E+E, BOSON, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Leptoquark, 010306 general physics, Physics, Foucault, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Scalar (physics), Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract

We have searched for pair produced scalar leptoquarks each decaying to a quark and a charged lepton in a sample of 116 000 hadronic Z0 events produced at LEP. No candidate was detected and cross section and branching ratio limits are set for the above process at 95% CL. Mass limits are found to be about 42 GeV/c2 depending only slightly on the models used and a coupling times branching ratio exclusion line is drawn for a scalar leptoquark with a free coupling. We have also probed the mass region above 45 GeV/c2 for a singly produced scalar leptoquark and set limits on the cross section and the coupling lambda(2)/4-pi up to 60 GeV.

Published
1992
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35. SEARCH FOR EXCITED CHARGED LEPTONS IN Z0 DECAYS

Author

Th. D. Papadopoulou, Guenakh Mitselmakher, Maria Elena Pol, Patrick Jarry, S. Katsanevas, G. Rinaudo, J. Salt, D. Y. Bardin, E. K. Johansson, L. Vibert, Cristian Stanescu, P. Branchini, H. Schneider, T. A. Filippas, A. Firestone, M. De Beer, M. Regler, B.D. Hyams, M. Vollmer, U. Rossi, M. Bonesini, Paolo Giacomelli, E. I. Rosenberg, M. Michelotto, W. Kucewicz, G. Matthiae, Y. Sacquin, S. Delorme, K. Kurvinen, M. Zito, H. Mueller, A. Klovning, Javier Sánchez, L. S. Vertogradov, P. Poropat, A. Lopez-Fernandez, U. Mjoernmark, C. Bosio, A. Pullia, E. Menichetti, G. W. Van Apeldoorn, Stefano Ragazzi, B. De Lotto, G. Crosetti, Evgueni Vlasov, Pierre Astier, B. Korzen, S. Marti, L. Ventura, H. Furstenau, Tuure Tuuva, W.H. Range, F. Cao, R. Moeller, B. Grossetete, Allan Hallgren, Giovanni Valenti, W. Bonivento, G. Galeazzi, A. Ferrer, K. Moenig, H. Herr, L. G. Tkatchev, Roberto Cirio, L. K. Resvanis, M. Kopf, Dietrich Liko, P. Privitera, Martino Margoni, E. Fokitis, Andrey Korytov, T. Hofmokl, Marek Szczekowski, G. D. Alekseev, Hans Muller, V. Vrba, C. Vander Velde, Tiziano Camporesi, J. Dolbeau, P. Bambade, Guido Barbiellini, J. Guy, Tim Adye, P.S.L. Booth, P. N. Ratoff, R. Zitoun, M. Mc Cubbin, K. Hultqvist, M. Bonapart, G. Cosme, Georgios Stavropoulos, E. Rosso, H. Klein, Jan Krolikowski, Tord Ekelof, D. Vilanova, N. N. Khovanski, W. Bartl, H. Staeck, Massimo Caccia, J. A. Valls Ferrer, M. Jonker, Jon Christopher Wikne, F. Alted, G. A. Chelkov, Vladimir Nikolaenko, Itzhak Roditi, M. Richardson, F. Fulda-Quenzer, P. Abreu, Charles Bricman, G. Borisov, M. Baubillier, Achille Stocchi, Louis Lyons, P. N. Bogolubov, Christine Kourkoumelis, Daniel Treille, B. Koene, E. Dahl-Jensen, D. J. Holthuizen, K. D. Brand, N. G. Redaelli, J. P. Laugier, B. Loerstad, P. Juillot, H. Burmeister, N. I. Zimin, M. J. Bates, E. Graziani, C. Lambropoulos, Ugo Amaldi, J. M. Brunet, W. De Boer, A. M. Zaitsev, Alexander Vodopyanov, F. Djama, P. Borgeaud, U. Kruener-Marquis, K. Furnival, F. Bianchi, Marco Bozzo, Paolo Morettini, J. G. Loken, P. Beilliere, D. Husson, U. Gasparini, E. Zevgolatakos, P. Frenkiel, Robert S. Brown, Toralf Bernhard Skaali, A. Passeri, P. Herquet, R. Contri, U. Nau-Korzen, Mikael Berggren, M. Los, Paolo Ronchese, V. Ruhlmann, A. De Min, D. Gamba, G. Voulgaris, S. D. Hodgson, Demetrios Loukas, T. Buran, R. Sekulin, Peter M. Allen, V. Lepeltier, M. Pimenta, Joao Varela, S-O. Holmgren, N. Crosland, F. Waldner, J. Lindgren, J. J. Hernandez, C. J. Beeston, I. A. Tyapkin, J. Cuevas Maestro, T. S. Spassoff, Paolo Checchia, G. E. Theodosiou, S. C. Blyth, J. J. Gomez Y Cadenas, Manolis Dris, P. Vaz, N. J. Kjaer, Wolfgang Adam, G. Maehlum, P. Roudeau, Ph. Gavillet, T. Moa, B. A. Khomenko, N. De Groot, S. Ueberschaer, Nikita Smirnov, C. Walck, F. Verbeure, F. Kapusta, L. Bugge, A. J. Camacho Rozas, I. Lippi, D. Z. Toet, Matteo Pegoraro, Francesco Navarria, C. Defoix, Edoardo Castelli, F. Pierre, A. Lounis, T. Todorov, E. Lillethun, A. Maltezos, D. Isenhower, Klaus Hamacher, J. Zúñiga, S. Biagi, R. Pain, O. Barring, A. Baroncelli, S. Dagoret, M. L. Turluer, G. Wilkinson, A. Pinsent, M.D.M. De Fez Laso, D. Reid, G. Hamel de Monchenault, H. P. Borner, Stefaan Tavernier, Andrea Perrotta, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, E.N. Tsyganov, J. H. Wickens, R. Lauhakangas, P. Van Dam, Josef Strauss, T. Kreuzberger, W. Van Doninck, Natale Demaria, Jose Luis Contreras, I. Herbst, G. Sette, A. Elliot Peisert, Olga Botner, Krzysztof Korcyl, G. Ekspong, M. Sessa, Yu. Belokopytov, S. Squarcia, R. Holmes, H. Saarikko, P. Negri, S. Gumenyuk, Gianni Zumerle, Renato Turchetta, T. Tabarelli, R. A. Brenner, S. Maltezos, Giovanni Darbo, A. M. Segar, Flavio Fontanelli, C. De La Vaissiere, E. Lieb, W. Venus, J. Velasco, J.H. Bibby, A. G. Olshevski, Juan Fuster, George Kalkanis, P. B. Renton, Mario Sannino, M. Donszelmann, M. A. Lopez Aguera, R. Mc Nulty, Carmen García, H. De Boeck, B. Jean-Marie, M. Tyndel, R. Lucock, S. Simonetti, M. Begalli, H. Foeth, D. C. Fries, Göran Jarlskog, S. J. Alvsvaag, Andromachi Tsirou, Pierre Billoir, G. Tristram, D. Fassouliotis, Ariella Cattai, Andre Augustinus, R. Gokieli, J. Maillard, P. S. Iversen, E. C. Katsoufis, M. Turala, A. Tilquin, A. Letessier-Selvon, William Trischuk, A. Markou, Marta Calvi, B. Ueberschaer, P. O. Hulth, Paula Eerola, L. Mathis, Vincenzo Canale, Geoffrey Smith, V. Perevozchikov, J. P. Gerber, O. Ullaland, Tiziano Rovelli, R. Dzhelyadin, Pawel Jalocha, Barry King, D. Bertrand, E. Spiriti, P. Delpierre, G. Kantardjian, Leif J. Jönsson, J. Drees, D. Radojicic, R. Frühwirth, U. Trevisan, R. Orava, Fernand Grard, W. D. Apel, P. Folegati, P. Yepes, E. Daubie, A. De Angelis, D. Delikaris, N. van Eijndhoven, J. Werner, Jose M. Benlloch, A. Grant, B. Bouquet, K. W. Glitza, G. Myatt, W. Ruckstuhl, J. Timmermans, G. E. Kalmus, A. Lipniacka, Hans Dijkstra, H. Forsbach, Mogens Dam, Piotr Zalewski, J.M. Gago, B. Franek, Evangelos Gazis, Francesca Romana Cavallo, Borge Svane Nielsen, P. Beltran, J. J. Lozano, M. H. Gros, Daniel Bloch, Jan Ridky, Maria Roberta Monge, H. Palka, G. Skjevling, Ahmimed Ouraou, V.M. Golovatyuk, K. Woschnagg, B. Nijjhar, Mitchell Wayne, C. Ronnqvist, G. Zhang, A. P. Ostankov, V. V. Lapin, V.A. Uvarov, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, C. De Clercq, G. Gopal, A. Zalewska, D. Benedic, J. W. Lamsa, W. T. Meyer, W. J. Murray, M. P. Collins, P. Lutz, M. Dracos, Peter Kluit, Paul Baillon, F. Barao, F. Simonetto, J. N. Jackson, P. Siegrist, E. J. Sanchez, J-C. Marin, P. Kokkinias, Alexander Lincoln Read, M. Szeptycka, Jacques Lemonne, V. Kostukhin, M. Pernicka, I. Hietanen, E. Higon, Spyros Tzamarias, G. Wormser, Jesus Marco, G. Lenzen, M. Fernandez Alonso, G. Leder, Pieter David, Luc Pape, J. Pyythia, B. Åsman, R. Seufert, R. Strub, J. E. Campagne, M. Koratzinos, V. Obraztsov, F. Scuri, I. Roncagliolo, W. Krupinski, M. Schaeffer, M. Davenport, H. J. Hilke, A. M. Wetherell, D. Crennell, F. Mandl, G. Smadja, L. Lanceri, Jorge-Armando Benitez Garcia, B. W. Heck, V. Falaleev, S. Braibant, M. T. Trainor, T. Bolognese, Y. Dufour, P. D. Dauncey, Sandor Czellar, G. Polok, M. S. Bilenky, L.J. Carroll, P. Weilhammer, M. Voutilainen, G. Grosdidier, M. Crozon, Alessandra Romero, A. Ruiz, J. Kesteman, P. F. Honore, W. A. Mitaroff, A. N. Sissakian, R. Llosa, Claudia J. Stubenrauch, F. Richard, C. Matteuzzi, M. Hahn, B. Dalmagne, Laurent Chevalier, S. Almehed, F. Hahn, Milos Lokajicek, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, L. Tortora, F. J. Harris, O. Pingot, J. E. Hooper, Carlos Lacasta, V. Gracco, Krzysztof A. Rybicki, D. Wormald, Pavlos Ioannou, M. A. Houlden, R. Sosnowski, F. Naraghi, V. G. Timofeev, J. E. Augustin, S. Haider, C. Caso, M. Boratav, H. B. Crawley, F. Couchot, J. Bjarne, P. Antilogus, W. Klempt, F. Stichelbaut, R. Mc Kay, F. Adami, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, A. Campion, S. Volponi, R. Zukanovich Funchal, Marc Winter, C. Troncon, H. Wahlen, Ariel Goobar, J. H. Koehne, K. H. Becks, E. Vallazza, G. Vegni, N. Brummer, D. Johnson, J. Derkaoui, W.S.C. Williams, Lucio Cerrito, F. Ledroit, V. Chorowicz, M. Mazzucato, P. Szymanski, A. G. Frodesen, Torsten Paul Ake Åkesson, Z. Hajduk, Maciej Górski, A. Hakansson, W. Dulinski, P. V. Chliapnikov, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
Particle physics, Photon, Physics and Astronomy (miscellaneous), Electron–positron annihilation, MASS, 01 natural sciences, Nuclear physics, MUONS, LIMITS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, G-2, LEP, SIMULATION, ELECTRONS, Pair production, Excited state, Physique des particules élémentaires, Mass spectrum, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract

Using a data sample of 115000 hadronic Z0 decays, a search was performed for the production of excited charged leptons decaying into an ordinary lepton and one photon. Pair production of excited leptons of mass below 45 GeV/c2 is excluded. From an analysis of the lepton-photon mass spectra this experiment is also able to exclude single production of these particles for masses that reach up to 85 GeV/c2, if the compositeness scale is below 1 TeV. © 1992 Springer-Verlag, 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1992

36. Measurement of the average lifetime ofB hadrons

Author

A. Campion, S. Volponi, G. Skievling, E. K. Johansson, Jose M. Benlloch, A. Grant, R. Zukanovich Funchal, V. Cracco, H. Foeth, Marc Winter, Evangelos Gazis, C. Troncon, Ariel Goobar, Hans Dijkstra, J. H. Koehne, P. Privitera, G. Wormser, Pieter David, K. H. Becks, E. Vallazza, M. Dracos, W. Trischuk, B. Ueberschaer, Edoardo Castelli, Goeran Jarlskog, F. Pierre, W. Krupinski, O. Doll, L. Bugge, Francesca Romana Cavallo, Mitchell Wayne, J. A M A Buytaert, A. Lopez-Fernandez, Tord Ekelof, V. V. Lapin, F. Stichelbaut, M. Regler, D. Zavrtanik, F. Adami, A. G. Olshevski, R. Keranen, Francisco Matorras, K. Woschnagg, N. Brummer, G. Zumerli, A. De Angelis, P. Collins, D. Delikaris, C. De Clercq, P. Poropat, Lucio Cerrito, F. Couchot, J. Bjarne, P. Antilogus, H. J. Hilke, F. Carena, B. Koene, Tuure Tuuva, D. Husson, W. Klempt, F. Hahn, M. Jonker, J. A. Valls Ferrer, W. J. Murray, G. Ekspong, J. Pyyhtia, A. Pullia, H. Furstenau, D. Johnson, H. Staeck, E. J. Sanchez, I. A. Tyapkin, A. Firestone, S. Haider, P. Roudeau, J. Werner, Daniel Bloch, M. Los, L.J. Carroll, T. Henkes, G. Crosetti, Evgueni Vlasov, Paolo Morettini, Giovanni Darbo, S. Simonetti, P. Beilliere, A. Chan, V. Lepeltier, A. S. Vodopyanov, M. Paganoni, L. O. Eek, R. C. Shellard, Josef Hrubec, C. O. Higgins, D. Y. Bardin, J. Sanchez, Ph. Charpentier, Paolo Checchia, F. Kapusta, K. D. Brand, G. Vegni, Ph. Gavillet, T. Moa, Ahmimed Ouraou, V.M. Golovatyuk, M. Begalli, G. Sette, A. Elliot Peisert, C. Kourkoumelis, D. J. Holthuizen, P. Kluit, H. Herr, W.S.C. Williams, G. Stavropoulos, A. Zalewska, A. M. Segar, V. Chorowicz, B. Loerstad, Mikko Voutilainen, M. Vollmer, Mario Sannino, U. Rossi, Paolo Giacomelli, W. T. Meyer, M. A. Lopez Aguera, K. Furnival, Y. Sacquin, V. Canale, O. Barring, A. Fenyuk, A. Baroncelli, P. Abreu, P. Borgeaud, J. G. Loken, M. De Beer, V. Ruhlmann, S. Dagoret, P. S. Iversen, Y. Dufour, P. Van Dam, Sandor Czellar, Dietrich Liko, P. Grosse-Wiesmann, W. K. Van Doninck, F. Richard, S. Delorme, M. Bonesini, M. Turala, Flavio Fontanelli, Piotr Zalewski, H. De Boeck, B. Jean-Marie, I. Lippi, M. Bonapart, T. Hofmokl, Marek Szczekowski, G. Kalmus, M. Pegoraro, J. Maillard, H. Burmeister, T. S. Spassoff, K. A. J. Forbes, Renato Turchetta, S. D. Hodgson, C. De La Vaissiere, A. J. Camacho Rozas, Antonio Ferrer, G. Hamel de Monchenault, D. Z. Toet, P. Siegrist, L. G. Tkatchev, Eilam Gross, Robert S. Brown, J. Krollkowski, M. Mazzucato, R. Sekulin, G. Polok, Josef Strauss, T. Bolognese, S. Braibant, W. Venus, Wolfgang Adam, M. Schaeffer, C. Matteuzzi, J. H. Wickens, Jose Luis Contreras, Ariella Cattai, U. Gasparini, E. Rosso, Itzhak Roditi, M. Hahn, A. Tilquin, S. Almehed, J. J. Hernandez, B. Boštjančič, P. Szymanski, Barry King, E. Spiriti, M. Chliapnikov, D. Vilanova, G. Maehlum, B. Bouquet, B. Grossetete, Allan Hallgren, Louis Lyons, Giovanni Valenti, G. E. Theodosiou, W. Bonivento, B. De Lotto, Maria Elena Pol, I. Kronkvist, S. Katsanevas, V. Perevozchikov, A. Klovning, Yu. Belokopytov, L. Vitale, L. S. Vertogradov, D. Radojicic, U. Mjoernmark, C. Bosio, R. Frühwirth, Daniel Treille, J. Krstic, J. Timmermans, M. J. Bates, G. Sajot, M. McCubbin, A. G. Frodesen, C. J. Beeston, A. Lipniacka, J-C. Marin, R. Gokieli, Guy Wilkinson, R. Lucock, U. Kruener-Marquis, V. Vrba, A. Tsirou, T. B. Skaali, S. C. Blyth, T. A. Filippas, M.D.M. De Fez Laso, S-O. Holmgren, Jan Ridky, P. Lutz, Tiziano Camporesi, G. Leder, G. Cosme, D. Gamba, Olga Botner, J. E. Augustin, Torsten Paul Ake Åkesson, G. Voulgaris, D. Isenhower, Spyros Tzamarias, Gueorgui Chelkov, Krzysztof Korcyl, Demetrios Loukas, Paolo Ronchese, N. J. Kjaer, P. Yepes, Patrick Jarry, G. Rinaudo, J. Lindgren, Rupert Leitner, F. Simonetto, N. Magnussen, W. Kucewicz, N. G. Redaelli, L. Mathis, C. Walck, R. Sosnowski, Marco Bozzo, Tiziano Rovelli, Fernand Grard, Z. Hajduk, S. Squarcia, Maciej Górski, Carmen García, Andrey Korytov, Nikita Smirnov, R. Holmes, H. Saarikko, F. Naraghi, T. Tabarelli, Chiara Meroni, I. Herbst, G. Lenzen, E. Lieb, M. Davenport, V. Bocci, A. Hakansson, G. Tristram, H. Mueller, D. Crennell, P. Frenkiel, P. Ioannou, F. Mandl, P. D. Dayncey, V. G. Timofeev, F. Waldner, R. McNulty, N.I. Zimin, J. N. Jackson, N. Yamdagni, H. Forsbach, Paul Baillon, M. Szeptycka, C. Ronnqvist, N. N. Khovanski, W. Bartl, Alexander Lincoln Read, Juan Fuster, D. Fassouliotis, M. Boratav, Paula Eerola, F. Ledroit, P. Billoir, Jacques Lemonne, W. Dulinski, R. Barate, G. Zhang, A. P. Ostankov, B. W. Heck, H. B. Crawley, C. Gaspar, S. Marti, K. Rybicki, M. T. Trainor, J. P. Laugier, G. Gopa, B. Åsman, V. Kostukhin, Peter M. Allen, S. Vlassopoulos, O. Ullaland, H. Palka, J. Dolbeau, E. G. Anassontzis, B. A. Khomenko, J. W. Lamsa, P. Bambade, Luc Pape, K. Kurvinen, M. Kopf, Stefaan Tavernier, J. P. Engel, M. V. Castillo Gimenez, N. De Groot, P.S.L. Booth, M. Pernicka, M. Feindt, A. Stocchi, Francesco Navarria, C. Defoix, I. Hietanen, R. A. Brenner, J. Zúñiga, U. Trevisan, S. J. Alvsvaag, F. Barao, Jesus Marco, R. Strub, N. Demaria, G. Damgaard, P. Weilhammer, E. Higon, C. Caso, R. Seufert, R. Zitoun, O. Pingot, M. Koratzinos, B. Franek, F. Scuri, Jon Christopher Wikne, F. Fulda-Quenzer, K. Doraba, M. P. Clara, M. Pimenta, L. Lanceri, Borge Svane Nielsen, J. J. Lozano, M. H. Gros, P. Negri, E. Graziani, J. M. Brunet, A. Koch-Mehrin, G. Grosdidier, Klaus Moenig, D. Benedic, A. Letessier-Selvon, M. Crozon, W. D. Apel, L. Diciaccio, Alessandra Romero, A. Ruiz, J. Kesteman, M. A E Schyns, P. F. Honore, M. S. Bilenky, Mogens Dam, R. Llosa, B. Dalmagne, Laurent Chevalier, Milos Lokajicek, L. Tortora, P. Kokkinas, F. J. Harris, J. E. Hooper, Carlos Lacasta, D. Wormald, A. Markou, George Kalkanis, P. B. Renton, E. N. Tsyganov, D. C. Fries, E. C. Katsoufis, Marta Calvi, Geoffrey Smith, G. W. Van Apeldoorn, R. J. Apsimon, Pierre Astier, L. Ventura, Y. Lemoigne, G. Matthiae, V. A. Urarov, L. Jonsson, P. N. Bogolubov, J. P. Gerber, R. Orava, P. N. Ratoff, K. W. Glitza, E. Dahl-Jensen, Klaus Hamacher, B. Nijjhar, A. Passeri, M. Bataglia, M. Berggren, A. Augustinus, C. Vander Velde, P. Vaz, C. Lambropoulos, Ugo Amaldi, G. Smadja, A. Lounis, P. Jalocha, W. De Boer, E. Zevgolatakos, H. P. Borner, Stefan Schael, W. Mitaroff, M. Tyndel, T. Kreuzberger, D. Bertrand, J. Garcia, P. Folegati, R. McKay, M. Fernandez Alonso, V. Obraztsov, W. Ruckstuhl, I. Roncagliolo, Th. D. Papadopoulou, Guenakh Mitselmakher, H. Wahlen, José Salt, L. Vibert, P. Beltran, Cristian Stanescu, P. Branchini, H. Schneider, R. Lauhakangas, M. Sessa, A. N. Sissakian, M. Donszelmann, M. Richardson, A. Perrotta, G. Borisov, M. Baubillier, P. Herquet, M. R. Monge, R. Contri, E. Menichetti, Stefano Ragazzi, F. Bianchi, U. Nau-Korzen, P. O. Hulth, P. Delpierre, M. Matveev, T. Burran, F. Cao, E. Daubie, M. Houlden, Manolis Dris, G. Myatt, E. Lillethun, Alexander Zaitsev, R. Moeller, G. Galeazzi, Roberto Cirio, L. K. Resvanis, Massimo Caccia, J. Cuevas Maestro, P. Juillot, F. Djama, Martino Margoni, T. Todorov, V. Nikolaenko, A. De Min, E. Fokitis, E. I. Rosenberg, Joao Varela, J. J. Gomez Y Cadenas, R. Pain, S. Ueberschaer, A. Maltezos, F. Verbeure, M. L. Turluer, C. Bricman, J. Drees, M. Michelotto, M. Zito, D. Reid, A. M. Wetherell, Guido Barbiellini, J. Guy, Tim Adye, G. D. Alekseev, E. Torassa, K. 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L., Andreev, V. P., Angelescu, T., Antonov, L., Antreasyan, D., Arce, P., Arefiev, A., Atamanchuk, A., Azemoon, T., Aziz, T., P. V. K., Bagnaia, P., Bakken, J. A., Ball, R. C., Banerjee, S., Bao, J., Barillere, R., Barone, L., Baschirotto, A., Battiston, R., Bay, A., Becattini, F., Bechtluft, J., Becker, R., Becker, U., Behner, F., Behrens, J., Bencze, G. L., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Biasini, M., Biland, A., Bilei, G. M., Bizzarri, R., Blaising, J. J., Bobbink, G. J., Bock, R., Bohm, A., Borgia, B., Bosetti, M., Bourilkov, D., Bourquin, M., Boutigny, D., Bouwens, B., Brambilla, E., Branson, J. G., Brock, I. C., Brooks, M., Bujak, A., Burger, J. D., Burger, W. J., Busenitz, J., Buytenhuijs, A., Cai, X. D., Capell, M., Caria, M., Carlino, G., Cartacci, A. M., Castello, R., Cerrada, M., Cesaroni, F., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, C., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chen, M., Chen, W. Y., Chiefari, Giovanni, Chien, C. Y., Choi, M. T., Chung, S., Civinini, C., Clare, I., Clare, R., Coan, T. E., Cohn, H. O., Coignet, G., Colino, N., Contin, A., Costantini, S., Cotorobai, F., Cui, X. T., Cui, X. Y., Dai, T. S., Dalessandro, R., Deasmundis, R., Degre, A., Deiters, K., Denes, E., Denes, P., Denotaristefani, F., Dhina, M., Dibitonto, D., Diemoz, M., Dimitrov, H. R., Dionisi, C., Dittmar, M., Djambazov, L., Dova, M. T., Drago, E., Duchesneau, D., Duinker, P., Duran, I., Easo, S., Elmamouni, H., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabbretti, R., Fabre, M., Falciano, S., Fan, S. J., Fackler, O., Fay, J., Felcini, M., Ferguson, T., Fernandez, D., Fernandez, G., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Forconi, G., Fredj, L., Freudenreich, K., Friebel, W., Fukushima, M., Gailloud, M., Galaktionov, Y., Gallo, E., Ganguli, S. 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E., Mount, R., Muller, S., Nadtochy, A., Nagy, E., Napolitano, Marco, Nessitedaldi, F., Newman, H., Neyer, C., Niaz, M. A., Nippe, A., Nowak, H., Organtini, G., 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., Perrier, J., Pevsner, A., Piccolo, D., Pieri, M., Piroue, P. A., Plasil, F., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Z. D., Qi, Qian, J. M., Qureshi, K. N., Raghavan, R., Rahalcallot, G., Rancoita, P. G., Rattaggi, M., Raven, G., Razis, P., Read, K., Ren, D., Ren, Z., Rescigno, M., Reucroft, S., Ricker, A., Riemann, S., Riemers, B. C., Riles, K., Rind, O., Rizvi, H. A., Ro, S., Rodriguez, F. J., Roe, B. P., Rohner, M., Romero, L., Rosierlees, S., Rosmalen, R., Rosselet, P., Vanrossum, W., Roth, S., Rubbia, A., Rubio, J. A., Rykaczewski, H., Sachwitz, M., Salicio, J., Salicio, J. M., Sanders, G. S., Santocchia, A., Sarakinos, M. 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C., Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Vertex method, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Elementary particle, E+E ANNIHILATION, MONTE-CARLO, DECAYS, FRAGMENTATION, QUARKS, 01 natural sciences, JET FRAGMENTATION, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Partículas Elementales, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Physics, scientific edition, QUARK, large electron positron collider, lcsh:QC1-999, L3 detector, Physique des particules élémentaires, BOTTOM HADRONS, MESON, Impact parameter, Particle Physics - Experiment, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Nuclear physics, Open Access, Humanities, Open Archives, 0103 physical sciences, 010306 general physics, Engineering (miscellaneous), Ciencias Exactas, Muon, E+E-PHYSICS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, Dipole, Z(0) DECAYS, Large Electron–Positron Collider, High Energy Physics::Experiment, Center of mass, lcsh:Physics, Bar (unit)
Abstract

The average lifetime of B hadrons produced in hadronic Z0 decays has been measured with the DELPHI detector at LEP. The measurement is based on the analysis of the impact parameter distributions of high pt muons and hadrons. The resulting mean B lifetimes are τB=(1.30±0.10±0.08)ps and τB=(1.27±0.04±0.12)ps respectively, giving a combined value of τB=(1.28±0.10)ps. The hadronic sample was also used to measure the partial Z0 width {Mathematical expression} and gave a value of 0.222-0.031+0.033±0.017. © 1992 Springer-Verlag., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1992
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37. Study of final state photons in hadronic Z$^0$ decay and limits on new phenomena

Author

Peter M. Allen, Itzhak Roditi, G. W. Van Apeldoorn, M. Pimenta, B. A. Khomenko, N. De Groot, Francesco Navarria, S-O. Holmgren, D. Husson, Klaus Hamacher, A. Baroncelli, C. Defoix, J. Zúñiga, Pierre Astier, S. Dagoret, L. Ventura, R. A. Brenner, P. Van Dam, Y. Lemoigne, S. J. Alvsvaag, P. Herquet, I. A. Tyapkin, R. Contri, Renato Turchetta, A. Koch-Mehrin, C. De La Vaissiere, U. Nau-Korzen, Mogens Dam, Tiziano Camporesi, A. Tilquin, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, G. Cosme, M. Battaglia, T. Bolognese, Pawel Jalocha, Barry King, E. Spiriti, Y. Dufour, P. D. Dauncey, Sandor Czellar, L. S. Vertogradov, N. G. Redaelli, Marco Bozzo, G. E. Theodosiou, G. Polok, S. C. Blyth, R. Frühwirth, G. Wilkinson, J. Timmermans, M.D.M. De Fez Laso, P. N. Bogolubov, Manolis Dris, P. Frenkiel, A. Lipniacka, P. Roudeau, Tord Ekelof, H. Staeck, P. Poropat, L. Mathis, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, F. Waldner, F. Carena, G. Wormser, Pieter David, Christine Kourkoumelis, E. Dahl-Jensen, M. Richardson, W. Krupinski, C. Walck, Borge Svane Nielsen, H. J. Hilke, B. Dalmagne, Stefaan Tavernier, Laurent Chevalier, A. Passeri, E. Lillethun, J. J. Lozano, M. H. Gros, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, A. G. Olshevski, A. Lopez-Fernandez, C. Gaspar, L. O. Eek, H. Herr, L. G. Tkatchev, R. C. Shellard, N. Vishnevsky, M. Jonker, Francesca Romana Cavallo, Mitchell Wayne, B. Loerstad, L. Di Ciaccio, Josef Hrubec, D. Benedic, V. V. Lapin, Th. D. Papadopoulou, B. Koene, Guenakh Mitselmakher, A. M. Segar, C. De Clercq, G. Borisov, V. Ronjin, P. Vaz, J. E. Augustin, M. Baubillier, Achille Stocchi, F. Simonetto, Peter Kluit, Tuure Tuuva, M. Pernicka, Milos Lokajicek, I. Hietanen, W. J. Murray, Rupert Leitner, P. Weilhmmer, W. Kucewicz, G. Leder, G. Matthiae, P. S. Iversen, Mikael Berggren, M. De Beer, H. Burmeister, Tiziano Rovelli, Paolo Morettini, Maria Roberta Monge, V. Lepeltier, A. Zalewska, M. Bonesini, A. Lounis, M. Fernandez Alonso, Edoardo Castelli, F. Pierre, L. Tortora, F. J. Harris, A. Klovning, U. Mjoernmark, C. Bosio, J. G. Loken, W. T. Meyer, P. Beilliere, Robert S. Brown, Jesus Marco, G. Lenzen, R. Strub, P. Abreu, V. Obraztsov, H. P. Borner, Stefan Schael, M. Koratzinos, L. Vibert, A. M. Zaitsev, Alexander Vodopyanov, Y. Sacquin, B. Åsman, Cristian Stanescu, P. Branchini, S. Marti, Jacques Lemonne, Paolo Checchia, F. Bianchi, Ph. Gavillet, T. Moa, H. Schneider, D. Crennell, F. Mandl, S. Haider, P. Siegrist, Andrea Perrotta, G. Hamel de Monchenault, G. Smadja, G. Sette, Josef Strauss, G. Ekspong, A. Elliot Peisert, M. Schaeffer, J. E. Hooper, Dietrich Liko, P. Privitera, Carlos Lacasta, Giovanni Darbo, C. Caso, U. Gasparini, I. Roncagliolo, S. Braibant, R. Lauhakangas, Krzysztof A. Rybicki, D. Wormald, R. Pain, O. Barring, W. Bonivento, W. Venus, Matteo Pegoraro, J-C. Marin, Flavio Fontanelli, Guido Barbiellini, B. W. Heck, M. Sessa, P. N. Ratoff, Andrey Korytov, S. Simonetti, M. Begalli, H. Forsbach, C. Ronnqvist, G. Zhang, V. Vrba, A. P. Ostankov, H. De Boeck, B. Jean-Marie, M. Tyndel, J. Krstic, K. D. Brand, C. Vander Velde, N. I. Zimin, Natale Demaria, G. A. Chelkov, V. Ruhlmann, G. Meola, Spyros Tzamarias, Daniel Treille, M. Boratav, I. Kronkvist, D. J. Holthuizen, C. J. Beeston, Pierre Billoir, M. Donszelmann, I. Lippi, J. Guy, Tim Adye, Patrick Jarry, Jan Krolikowski, N. N. Khovanski, W. Bartl, G. Rinaudo, J. Salt, D. Isenhower, J. Maillard, E.N. Tsyganov, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, V. Kostukhin, M. Bonapart, Jorge-Armando Benitez Garcia, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, George Kalkanis, P. B. Renton, M. Davenport, L. Bugge, A. J. Camacho Rozas, N. Magnussen, D. C. Fries, J. Lindgren, J. Cuevas Maestro, K. Furnival, H. B. Crawley, R. Gokieli, J. Drees, Luc Pape, R. Sosnowski, D. Z. Toet, S. Squarcia, R. Holmes, H. Saarikko, M. Turala, Evangelos Gazis, E. Menichetti, F. Naraghi, Stefano Ragazzi, M. Chapkin, Jose M. Benlloch, A. Grant, B. Boštjančič, V. Perevozchikov, F. Cao, J. A. Valls Ferrer, J. P. Laugier, T. Tabarelli, P. Borgeaud, U. Kruener-Marquis, L. Vitale, Nikita Smirnov, Louis Lyons, Paolo Ronchese, M. Feindt, T. Kreuzberger, W. Van Doninck, E. C. Katsoufis, Marta Calvi, P. Negri, Wolfgang Adam, V. G. Timofeev, T. Todorov, E. Lieb, D. Radojicic, Hans Dijkstra, W. A. Mitaroff, Jan Ridky, Piotr Zalewski, M. Dracos, M. Michelotto, D. Fassouliotis, Ariella Cattai, E. I. Rosenberg, Yu. Belokopytov, N. J. Kjaer, P. Lutz, R. McNulty, M. T. Trainor, Vincenzo Canale, Geoffrey Smith, J. P. Gerber, F. Richard, C. Matteuzzi, F. Ledroit, S. Vlassopoulos, O. Ullaland, Leif J. Jönsson, M. Voutilainen, G. Grosdidier, R. Lucock, M. Crozon, K. Kurvinen, V.A. Uvarov, Alessandra Romero, M. Hahn, Demetrios Loukas, Javier Sánchez, R. Sekulin, G. Galeazzi, A. Ferrer, V. Bocci, S. Almehed, E. K. Johansson, K. W. Glitza, M. L. Turluer, A. Ruiz, J. Kesteman, D. Reid, U. Trevisan, M. A E Schyns, P. F. Honore, A. N. Sissakian, M. McCubbin, J. N. Jackson, R. Llosa, G. Tristram, M. S. Bilenky, Paula Eerola, J. J. Hernandez, F. Hahn, G. Maehlum, T. S. Spasoff, L.J. Carroll, B. Nijjhar, P. Kokkinias, B. Franek, R. Barate, E. G. Anassontzis, G. E. Kalmus, Martino Margoni, E. Fokitis, G. D. Alekseev, E. Torassa, P. O. Hulth, A. Firestone, J. P. Engel, William Trischuk, A. Markou, M. V. Castillo Gimenez, Gianni Zumerle, G. Damgaard, O. Pingot, O. Doll, P. Delpierre, E. Daubie, M. Vollmer, U. Rossi, K. Hultqvist, Paolo Giacomelli, M. J. Bates, Georgios Stavropoulos, V. Gracco, Toralf Bernhard Skaali, D. Gamba, G. Voulgaris, S. Delorme, M. Zito, Pavlos Ioannou, F. Verbeure, F. Kapusta, Andromachi Tsirou, G. Myatt, I. Herbst, Juan Fuster, A. Pullia, Andre Augustinus, H. Furstenau, Klaus Moenig, Eugene P. Gross, M. A. Houlden, T. Hofmokl, Marek Szczekowski, B. Grossetete, Allan Hallgren, E. Rosso, H. Klein, Giovanni Valenti, R. Moeller, Roberto Cirio, M. Los, L. K. Resvanis, D. Bertrand, H. Palka, D. Vilanova, G. Skjevling, J. W. Lamsa, P. Yepes, Massimo Caccia, Vladimir Nikolaenko, F. Barao, K. Woschnagg, P. Juillot, G. Gopal, F. Djama, E. J. Sanchez, A. De Min, E. Higon, R. Seufert, P. Folegati, Joao Varela, R. McKay, G. Sajot, W. Ruckstuhl, J. J. Gomez Y Cadenas, S. Ueberschaer, F. Scuri, A. Maltezos, A. M. Wetherell, L. Lanceri, P. Beltran, A. G. Frodesen, Torsten Paul Ake Åkesson, Z. Hajduk, Maciej Górski, A. Hakansson, W. Dulinski, P. V. Chliapnikov, G. Vegni, N. Brummer, J. Pyyhtia, D. Johnson, A. Chan, W.S.C. Williams, Lucio Cerrito, V. Chorowicz, M. Mazzucato, P. Szymanski, H. Foeth, R. J. Apsimon, B. Ueberschaer, P. Grosse-Wiesmann, A. De Angelis, P. Collins, D. Delikaris, J. Werner, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, K. A. J. Forbes, S. D. Hodgson, T. Buran, Olga Botner, Krzysztof Korcyl, Carmen García, M. Kopf, R. Zitoun, Jon Christopher Wikne, F. Fulda-Quenzer, E. Graziani, J. M. Brunet, A. Campion, S. Volponi, R. Zukanovich Funchal, Marc Winter, C. Troncon, H. Wahlen, Ariel Goobar, J. H. Koehne, K. H. Becks, E. Vallazza, F. Stichelbaut, D. Zavrtanik, F. Adami, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, C. O. Higgins, F. Couchot, J. Bjarne, P. Antilogus, Mario Sannino, M. A. Lopez Aguera, W. Klempt, R. Orava, Fernand Grard, B. Bouquet, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, T. A. Filippas, M. Regler, H. Mueller, J. Dolbeau, P. Bambade, P.S.L. Booth, Charles Bricman, M. P. Clara, Göran Jarlskog, A. Letessier-Selvon, W. D. Apel, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo

Subjects
Quark, Particle physics, COLLISIONS, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Dalitz plot, Type (model theory), 01 natural sciences, Nuclear physics, PHYSICS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], PERTURBATIVE QCD, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Coupling constant, 010308 nuclear & particles physics, Branching fraction, JET PRODUCTION-RATES, High Energy Physics::Phenomenology, RESONANCE, DENSITY PROJECTION CHAMBER, E+ E ANNIHILATION, Z-BOSON, FRAGMENTATION, Physique des particules élémentaires, Production (computer science), High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

The differential cross section for final state radiation from primary quarks is obtained from a study of isolated energetic photons produced in the reaction e+e-→Z0→hadrons+γ, as measured in the DELPHI detector at the CERN LEP collider. When combined with the measurement of the total hadronic width of the Z0, the observed rate determines the electroweak coupling constants of up and down type quarks, i.e. {Mathematical expression} No evidence is seen for additional photon production from anomalous decays of the Z0 or from decays of new particles. This measurement leads to upper limits on the production cross section times branching fraction of (a) the Higgs boson in the reaction e+e-→Z0→H +γ, H→hadrons, (b) an excited quark, q*→q+γ, and (c) the contribution of an anomalous decay of the Z0 into a photon and hadrons. These limits, all at the 95% confidence level, vary from 3 to 10pb as the mass of the intermediate state (H, q* or Z*) varies from 10 GeV/c2 to 80 GeV/c2. © 1992 Springer-Verlag, 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1992
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38. Measurement of the Partial Width of the Z0 Into B(b)over-bar Final-states Using Their Semileptonic Decays

Author

Tord Ekelof, H. Staeck, E. Lieb, M. Jonker, H. Palka, G. Skjevling, R. Lauhakangas, Ph. Charpentier, B. Loerstad, D. Fassouliotis, J. W. Lamsa, Ariella Cattai, F. Ledroit, A. B. Fenyuk, O.M. Kouznetsov, M. Los, F. Barao, H. Burmeister, I. Lippi, Tiziano Rovelli, V. Lepeltier, Paolo Checchia, Ph. Gavillet, T. A. Fearnley, E.N. Tsyganov, J. H. Wickens, M. Sessa, Marco Paganoni, Jose Luis Contreras, M. Karlsson, O. Ullaland, Leif J. Jönsson, A. Klovning, Robert S. Brown, C. Ronnqvist, A. De Min, Joao Varela, I. Siccama, H. Foeth, U. Mjoernmark, C. Bosio, G. Sajot, E. Higon, R. Seufert, J. J. Gomez Y Cadenas, A. P. Ostankov, S. Bosworth, U. Trevisan, T.E. Pettersen, Pierre Juillot, B. Koene, F. Scuri, M. Donszelmann, R. J. Apsimon, H. Briand, T. L. Hessing, C. Vander Velde, B. Franek, K. Woschnagg, Matteo Pegoraro, A. M. Wetherell, A. Chan, W.S.C. Williams, Lucio Cerrito, Claire Bourdarios, J. Dolbeau, Andrea Perrotta, G. Sette, A. Elliot Peisert, A. G. Frodesen, A. G. Olshevski, L. Lanceri, Jan Ridky, G. Gopal, Luc Pape, Z. Hajduk, V. Chorowicz, L. Vitale, F. Carena, S. Volponi, Maciej Górski, V. Ruhlmann, A. Hakansson, P. Grosse-Wiesmann, A. De Angelis, P. Collins, D. Delikaris, M. Turala, L. Chaussard, P. V. Chliapnikov, Paolo Morettini, J. G. Loken, Andrey Korytov, R. Sosnowski, P. Bambade, P.S.L. Booth, A. Maltezos, S. O. Holmgren, L. S. Vertogradov, P. Niss, T. S. Spassoff, M. Mazzucato, P. Szymanski, G. Vegni, N. Brummer, K. Kulka, F. Naraghi, V. G. Timofeev, P. Lutz, Patrick Jarry, G. Rinaudo, J. Salt, G. A. Chelkov, R. Zukanovich Funchal, C. Lambropoulos, Ugo Amaldi, L. Bugge, P. Abreu, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, R. Mc Nulty, A. Firestone, D. Johnson, G. Hamel de Monchenault, P. Beilliere, Charles Bricman, Josef Strauss, S. Braibant, V. Chabaud, O. Toker, Jan Krolikowski, N. N. Khovanski, W. Bartl, L. Mathis, M. Michelotto, A. J. Camacho Rozas, Eilam Gross, F. Simonetto, M. J. Bates, G. Leder, W. De Boer, B. Åsman, E. Zevgolatakos, Juan Abel Barrio, D. Z. Toet, Maria Roberta Monge, A. Zalewska, Itzhak Roditi, D. Crennell, F. Mandl, V.A. Uvarov, M. P. Clara, G. W. Van Apeldoorn, W. T. Meyer, W. Venus, C. J. Beeston, G. Smadja, I. Kronkvist, J. A. Valls Ferrer, J. P. Laugier, Ugo Gasparini, Jacques Lemonne, P. E. S. Nilsen, G. Sciolla, L. O. Eek, R. C. Shellard, H. Wahlen, Ariel Goobar, J. H. Koehne, Rupert Leitner, M. Voutilainen, G. Grosdidier, M. Vollmer, U. Rossi, Paolo Giacomelli, S. Delorme, M. Zito, M. Kopf, H. De Boeck, B. Jean-Marie, M. Tyndel, J. Maillard, L. Di Ciaccio, Josef Hrubec, A. M. Segar, Guido Barbiellini, J. Guy, M. Crozon, Jon Christopher Wikne, Alessandra Romero, A. Ruiz, J. Kesteman, C. Defoix, M. A E Schyns, F. Fulda-Quenzer, L. Ventura, Y. Lemoigne, J. N. Jackson, P. Kokkinias, P. S. Iversen, F. Fontanelli, W. Van Doninck, Tim Adye, R. Pain, D. Isenhower, P. Herquet, M. L. Turluer, D. Reid, S. Squarcia, K. H. Becks, E. Vallazza, B. Boštjančič, E. I. Rosenberg, J. Chauveau, R. Holmes, K. Kurvinen, Borge Svane Nielsen, J. J. Lozano, B. Grossetete, Allan Hallgren, Giovanni Valenti, W. Hao, O. Barring, M. Weierstall, M. S. Bilenky, P. N. Bogolubov, Krzysztof Doroba, E. Graziani, Chiara Meroni, Jan Buytaert, J. E. Augustin, J. Drees, J. M. Brunet, P. F. Honore, U. Haedinger, R. Contri, G. D. Alekseev, E. Torassa, H. Saarikko, L.J. Carroll, Toralf Bernhard Skaali, D. Gamba, G. Voulgaris, F. Verbeure, F. Kapusta, S. Marti, Javier Sánchez, Ivan Mikulec, Christine Kourkoumelis, D. Benedic, A. Baroncelli, E. Dahl-Jensen, Peter Kluit, S. Dagoret, V. Perevozchikov, Tiziano Camporesi, Jorge-Armando Benitez Garcia, M. Pernicka, I. Hietanen, Mario Sannino, Manolis Dris, S. Haider, A. Lopez-Fernandez, Klaus Hamacher, P. Borgeaud, U. Kruener-Marquis, P. H. Kramer, Richard Brenner, Paolo Ronchese, P. Van Dam, A. Passeri, Pierre Billoir, Gianni Zumerle, G. Cosme, M. Mc Cubbin, K. Hultqvist, P. Roudeau, N. G. Redaelli, F. Stichelbaut, C. Caso, R. Mc Kay, Jesus Marco, G. Lenzen, V. Kostioukhine, K. A. J. Forbes, S. D. Hodgson, A. Andreazza, D. Radijicic, C. De La Vaissiere, N. J. Kjaer, B. A. Della Riccia, B. Golob, Georgios Stavropoulos, D. Zavrtanik, Tuure Tuuva, S. Gumenyuk, Marco Bozzo, B. Dalmagne, T. Buran, Laurent Chevalier, G. Zhang, Themistocles Bowcock, A. Tilquin, P. Weilhammer, Evangelos Gazis, M. Fernandez Alonso, E. Lillethun, Clara Troncon, D. J. Holthuizen, P. Siegrist, S. J. Alvsvaag, E. Agasi, J-C. Marin, R. Gokieli, S. Ueberschaer, Peter M. Allen, M. Pimenta, B. A. Khomenko, N. De Groot, Francesco Navarria, P. Vaz, J. Zúñiga, Pawel Jalocha, Barry King, E. Spiriti, Dietrich Liko, V. Obraztsov, P. Privitera, P. Frenkiel, A. Grant, P. Poropat, Andromachi Tsirou, C. O. Higgins, Jürgen H. Werner, D. Vilanova, Stefano Ragazzi, R. Zuberi, R. Keranen, R. Frühwirth, J. Timmermans, Milos Lokajicek, Hans Dijkstra, Juan Fuster, A. Pullia, Olga Botner, K. Furnival, T. Todorov, J. Straver, F. Waldner, I. Roncagliolo, P. Zalewski, Francisco Matorras, N. Yamdagni, F. Cao, Spyros Tzamarias, O. Tchikilev, Krzysztof Korcyl, A. Lipniacka, T. Maron, H. B. Crawley, R. Lindner, M. T. Trainor, Andre Augustinus, A. Wehr, G. Tristram, Paula Eerola, M. A. Lopez Aguera, Carmen García, A. Koch-Mehrin, C. Walck, Daniel Treille, J. P. Gerber, H. P. Borner, Stefan Schael, Wolfgang Adam, Th. D. Papadopoulou, Guenakh Mitselmakher, R. Barate, G. Galeazzi, F. Couchot, A. Ferrer, V. Bocci, R. Orava, Fernand Grard, L. Tortora, Mogens Dam, D. Bertrand, A. Daum, M. Dracos, S. Rossi, W. Da Silva, G. E. Kalmus, H. Furstenau, M. Davenport, J. Bjarne, G. Crossetti, F. J. Harris, W. A. Mitaroff, J. Lindgren, Natale Demaria, G. Meola, Martino Margoni, B. Nijjhar, Stefaan Tavernier, P. Antilogus, J. Krstic, K. D. Brand, J. Pennanen, E. Fokitis, Yu. Belokopytov, F. Richard, J. E. Hooper, C. Matteuzzi, Carlos Lacasta, M. Hahn, B. Bouquet, Maria Elena Pol, S. Almehed, M. Berggren, W. Klempt, N. I. Zimin, Krzysztof A. Rybicki, D. Wormald, F. Hahn, J. M. Levy, M. Feindt, P. Negri, S. Katsanevas, D. Y. Bardin, E. K. Johansson, B. Muryn, George Kalkanis, P. B. Renton, Cristian Stanescu, P. Branchini, Francesca Romana Cavallo, T. Hofmokl, Marek Szczekowski, H. Schneider, E. Cortina, Mitchell Wayne, M. De Beer, E. G. Anassontzis, J. P. Engel, T. A. Filippas, Göran Jarlskog, M. Regler, M. V. Castillo Gimenez, W. Ruckstuhl, D. C. Fries, Steinar Stapnes, V. V. Lapin, M. Bonesini, W. D. Apel, P. Yepes, R. Ehret, G. Damgaard, E. Rosso, H. Klein, Y. Sacquin, O. Pingot, C. De Clercq, E. C. Katsoufis, W. J. Murray, V. Gracco, P. Beltran, Pavlos Ioannou, K. Osterberg, Marta Calvi, Vincenzo Canale, Geoffrey Smith, R. Strub, H. Mueller, Klaus Moenig, M. A. Houlden, M. Richardson, W. Bonivento, V. Vrba, G. Borisov, M. Baubillier, Achille Stocchi, I. A. Tyapkin, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, E. Karvelas, J. Cuevas Maestro, R. Moeller, Roberto Cirio, L. K. Resvanis, Massimo Caccia, Vladimir Nikolaenko, J. J. Hernandez, P. O. Hulth, P. Delpierre, E. Daubie, G. Myatt, A. N. Sisakian, J. T.M. Chrin, C. Matthiae, Edoardo Castelli, F. Pierre, G. Ekspong, Giovanni Darbo, P. N. Ratoff, S. Simonetti, M. Begalli, Louis Lyons, R. Sekulin, G. E. Theodosiou, S. C. Blyth, Demetrios Loukas, G. Wilkinson, T. Moa, G. Maehlum, M.D.M. De Fez Laso, Fares Djama, William Trischuk, A. Markou, M. A. Winter, A. Petrolini, T. Henkes, B. De Lotto, Evgueni Vlasov, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, H. Herr, L. G. Tkatchev, Pieter David, W. Krupinski, H. J. Hilke, M. Battaglia, T. Bolognese, Y. Dufour, P. D. Dauncey, Sandor Czellar, G. Polok, T. Tabarelli, C. Gaspar, 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), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and UCL - SST/IRMP - Institut de recherche en mathématique et physique

Subjects
Quark, Physics, Particle physics, Muon, Partial width, HEAVY FLAVOR PRODUCTION, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Branching fraction, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, High Energy Physics::Phenomenology, 01 natural sciences, Spectral line, Sphericity, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The spectra of prompt electrons and muons from the semi-leptonic decays of heavy hadrons produced inZ 0 decays have been used to measure the coupling of theZ 0 tob quarks weighted by theB hadrons mean semi-leptonic branching fraction, giving a value: $$BR_{sl}^b *{{\Gamma _{b\bar b} } \mathord{\left/ {\vphantom {{\Gamma _{b\bar b} } {\Gamma _H }}} \right. \kern-\nulldelimiterspace} {\Gamma _H }} = 0.0221 \pm 0.0015$$ . The data has also been used to measure the value of the fragmentation parameter, defined in the context of the LUND PS Model, version 7.2, giving: $$\varepsilon (b) = \left( {8\begin{array}{*{20}c} { + 5} \\ { - 3} \\ \end{array} \pm 2} \right)10^{ - 3} $$ . The corresponding value of the mean fraction of the beam energy taken by aB hadron in the fragmentation of ab quark is: $$\overline {X_E^b } = 0.69\begin{array}{*{20}c} { + 0.02} \\ { - 0.03} \\ \end{array} \pm 0.01$$ . If the values of $$\Gamma _{b\bar b} $$ andΓ H are taken from the Standard Model, the following value is obtained for the mean semi-leptonic braching fraction ofB hadrons: BR sl =(10.1±0.7)%. Taking the value of $${{\Gamma _{b\bar b} } \mathord{\left/ {\vphantom {{\Gamma _{b\bar b} } {\Gamma _{\rm H} }}} \right. \kern-\nulldelimiterspace} {\Gamma _{\rm H} }}$$ from an independent analysis of DELPHI data based on the use of the boosted sphericity product, a value: BR sl =(10.1±1.3)% is obtained.

Published
1992
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39. Searches for heavy neutrinos from Z decays

Author

A. Passeri, A. G. Olshevski, L. Chaussard, P. Poropat, H. Furstenau, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, V. Ruhlmann, P. Vaz, C. Vander Velde, L. Mathis, N. Demaria, G. Damgaard, G. Smadja, A. Zalewska, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, M. Bonapart, W. T. Meyer, O. Pingot, Rana R. McKay, Y. Dufour, Sandor Czellar, A. J. Camacho Rozas, Antonio Ferrer, P. Jalocha, T. Tabarelli, A. M. Segar, Mikko Voutilainen, G. Polok, Piotr Zalewski, R. Sekulin, D. Z. Toet, P. Siegrist, H. P. Borner, Stefano Ragazzi, E. Lieb, Klaus Moenig, M. Schaeffer, G. E. Theodosiou, S. C. Blyth, P. S. Iversen, M.D.M. De Fez Laso, Louis Lyons, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, J. J. Hernandez, Paul Baillon, M. Szeptycka, D. Fassouliotis, G. Wormser, Pieter David, M. Richardson, F. Cao, G. Maehlum, W. Trischuk, A. Baroncelli, Guy Wilkinson, L. G. Tkatchev, W. Krupinski, Patrick Jarry, F. Ledroit, Jacques Lemonne, A. Perrotta, S. Vlassopoulos, G. Borisov, O. Ullaland, W. Mitaroff, M. Tyndel, A. Chan, I. Herbst, S. Dagoret, G. Rinaudo, V.A. Uvarov, W.S.C. Williams, V. Gracco, Demetrios Loukas, S. Haider, P. Van Dam, T. Kreuzberger, Alexander Zaitsev, R. Moeller, G. Stavropoulos, F. Stichelbaut, G. Hamel de Monchenault, M. Baubillier, D. Vilanova, Josef Strauss, V. Chorowicz, G. Galeazzi, M. Battaglia, W. Van Doninck, M. Regler, Roberto Cirio, L. K. Resvanis, D. Zavrtanik, Renato Turchetta, U. Trevisan, Edoardo Castelli, F. Pierre, Itzhak Roditi, E. K. Johansson, A. Firestone, M. Pernicka, S. Braibant, J-C. Marin, R. Gokieli, G. W. Van Apeldoorn, D. J. Holthuizen, F. Richard, F. Bianchi, F. Adami, M. Feindt, I. Hietanen, C. De La Vaissiere, C. Matteuzzi, R. Llosa, Pierre Astier, Spyros Tzamarias, O. Tchikilev, L. Ventura, Jesus Marco, R. Strub, M. Hahn, S. Almehed, W. Venus, A. Tsirou, Tiziano Rovelli, P. Kokkinias, M. Koratzinos, B. Franek, F. Kapusta, Jürgen H. Werner, N. Magnussen, Massimo Caccia, J. Sanchez, Ph. Charpentier, Th. D. Papadopoulou, G. Ekspong, J. N. Jackson, G. Zhang, T. B. Skaali, K. Furnival, R. Keranen, Guenakh Mitselmakher, G. Sajot, Y. Lemoigne, A. Tilquin, Francisco Matorras, Maria Elena Pol, Martino Margoni, M. Kopf, Y. Sacquin, S. Katsanevas, J. E. Augustin, P. D. Dauncey, G. Matthiae, N. Yamdagni, Giovanni Darbo, D. R. Johnson, E. Fokitis, E. I. Rosenberg, G. D. Alekseev, E. Torassa, S-O. Holmgren, P. Szymanski, S. Simonetti, M. Begalli, B. Åsman, R. McNulty, F. Carena, I. Kronkvist, Barry King, A. Campion, E. Spiriti, S. Volponi, J. Cuevas Maestro, P. Abreu, J. Garcia, M. Vollmer, C. Ronnqvist, P. Negri, M. Mazzucato, P. Juillot, O. Doll, J. G. Loken, P. Weilhammer, M. Fernandez Alonso, Wolfgang Adam, R. Frühwirth, C. Kourkoumelis, José Salt, A. P. Ostankov, U. Rossi, M. Jonker, Paolo Giacomelli, M. T. Trainor, K. Kurvinen, L. Jonsson, M. Mccubbin, R. Zukanovich Funchal, Marc Winter, Jelena Krstic, G. Lenzen, A. Lopez-Fernandez, J. Timmermans, R. Zitoun, O. Toker, L. Vibert, F. Djama, V. Obraztsov, T. A. Filippas, A. Lipniacka, C. Troncon, Jon Christopher Wikne, F. Fulda-Quenzer, D. Bertrand, Cristian Stanescu, P. Branchini, Yu. Belokopytov, H. Schneider, Luc Pape, V. Nikolaenko, Tuure Tuuva, H. Forsbach, M. Boratav, S. Delorme, V. Lepeltier, A. S. Vodopyanov, K. Hultqvist, R. A. Brenner, Tord Ekelof, R. Lauhakangas, V. Kostiukhin, H. Staeck, A. Letessier-Selvon, Ariel Goobar, G. P. Gopal, J. H. Koehne, N. Brummer, W. D. Apel, Paolo Checchia, Lucio Cerrito, Ariella Cattai, U. Gasparini, R. Sosnowski, I. Roncagliolo, L. Bugge, C.J. Beeston, E. Graziani, J. M. Brunet, W. Ruckstuhl, F. Naraghi, H. B. Crawley, P. N. Bogolubov, E. Dahl-Jensen, T. Henkes, G. Crosetti, Evgueni Vlasov, G. Vegni, S. J. Alvsvaag, B. Loerstad, Ph. Gavillet, T. Moa, K. H. Becks, E. Vallazza, Dietrich Liko, S. Schael, A. De Min, Joao Varela, B. Grossetete, Allan Hallgren, Rupert Leitner, M. Paganoni, Giovanni Valenti, V. G. Timofeev, K. A. J. Forbes, M. Donszelmann, G. Meola, H. Wahlen, Abdenour Lounis, P. Beltran, J. J. Gomez Y Cadenas, W. Kucewicz, D. Isenhower, S. D. Hodgson, F. Couchot, H. Burmeister, B. Koene, R. Pain, H. Herr, K. D. Brand, J. Pennanen, Claire Bourdarios, Flavio Fontanelli, J. Bjarne, Robert S. Brown, G. Kalmus, A. G. Frodesen, T. Buran, B. Dalmagne, Laurent Chevalier, M. Turala, P. Antilogus, Gueorgui Chelkov, S. Squarcia, J. P. Gerber, R. Holmes, H. Saarikko, A. Markou, T. Todorov, P. Borgeaud, U. Kruener-Marquis, S. Marti, H. Mueller, A. Koch-Mehrin, Alastair Grant, M. L. Turluer, B. De Lotto, K. Rybicki, W. Klempt, P. Billoir, F. Hahn, Torsten Paul Ake Åkesson, Paolo Ronchese, George Kalkanis, P. B. Renton, Milos Lokajicek, A. Pullia, Marco Sessa, A. Maltezos, R. Orava, P. N. Ratoff, D. Reid, K. W. Glitza, Eugene P. Gross, Olga Botner, N. J. Kjaer, Daniel Treille, P. Herquet, Paolo Morettini, W. Dulinski, Mogens Dam, Gianni Zumerle, Z. Hajduk, R. Contri, U. Nau-Korzen, R. Dzhelyadin, P. Beilliere, Krzysztof Korcyl, V. Bocci, Maciej Górski, L. Tortora, F. J. Harris, Carmen García, J. E. Hooper, M. Davenport, A. Hakansson, C. Gaspar, J. Lindgren, T. Hofmokl, D. C. Fries, Marek Szczekowski, Klaus Hamacher, F. Verbeure, B. Nijjhar, C. Bricman, J. Drees, Carlos Lacasta, J. Dolbeau, P. Folegati, M. Chapkin, Jose M. Benlloch, H. Foeth, R. J. Apsimon, P. Bambade, D. Wormald, G. Tristram, Paula Eerola, E. Vlasov, B. Ueberschaer, Hans Dijkstra, P.S.L. Booth, P. V. Chliapnikov, M. Pimenta, M. Houlden, Manolis Dris, A. M. Wetherell, M. Michelotto, Guido Barbiellini, P. Grosse-Wiesmann, G. Grosdidier, R. Barate, M. Berggren, P. Privitera, M. Crozon, Nikita Smirnov, Chiara Meroni, H. Palka, G. Skjevling, Alessandra Romero, A. Augustinus, A. De Angelis, P. Collins, D. Delikaris, J. Guy, J. W. Lamsa, A. Ruiz, J. Kesteman, E. C. Katsoufis, Tim Adye, M. A E Schyns, M. Zito, F. Barao, Daniel Bloch, E. Lillethun, P. F. Honore, Paul Allen, M. S. Bilenky, Marta Calvi, M. R. Monge, A. N. Sissakian, Ahmimed Ouraou, V.M. Golovatyuk, C. Caso, Geoffrey Smith, E. Higon, P. O. Hulth, R. Seufert, F. Scuri, E. Rosso, H. Klein, L. Lanceri, P. Delpierre, E. Daubie, O. Barring, M. P. Clara, G. Myatt, C. O. Higgins, Mario Sannino, M. A. Lopez Aguera, B. Bouquet, M. Los, M. J. Bates, Evangelos Gazis, G. Leder, E. Menichetti, M. Dracos, D. Gamba, M. De Beer, M. Bonesini, G. Voulgaris, C. Walck, T. Bolognese, W. Bonivento, V. Vrba, D. Husson, I. A. Tyapkin, T. S. Spassoff, Alexander Lincoln Read, Juan Fuster, D. Y. Bardin, P. Kluit, P. Yepes, Goeran Jarlskog, K. Woschnagg, H. J. Hilke, E. J. Sanchez, P. Roudeau, G. Sette, A. Elliot Peisert, H. De Boeck, B. Jean-Marie, M. Pegoraro, J. Maillard, B. Boštjančič, V. Perevozchikov, Tiziano Camporesi, G. Cosme, N. G. Redaelli, Borge Svane Nielsen, J. J. Lozano, Marco Bozzo, Krzysztof Doroba, Jan Buytaert, P. Frenkiel, P. Ioannou, F. Waldner, D. Benedic, N.I. Zimin, S. Ueberschaer, Stefaan Tavernier, B. A. Khomenko, N. De Groot, A. Stocchi, Francesco Navarria, C. Defoix, J. Zúñiga, Francesca Romana Cavallo, Mitchell Wayne, L.J. Carroll, V. V. Lapin, C. De Clercq, J. A. Valls Ferrer, W. J. Murray, V. Canale, A. Klovning, U. Mjoernmark, C. Bosio, Andrey Korytov, I. Lippi, E.N. Tsyganov, J. H. Wickens, B. Muryn, Jose Luis Contreras, Jan Krolikowski, N. N. Khovanski, W. Bartl, K. Oesterberg, L. Vitale, J. P. Laugier, L. S. Vertogradov, D. Radojicic, Jan Ridky, P. Lutz, F. Simonetto, Fernand Grard, D. Crennell, F. Mandl, B. W. Heck, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Abreu, P., Adam, W., Canale, Vincenzo, 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), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
Z-PEAK, LEPTONS, RESONANCE, LIMITS, QUARKS, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Hadron, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Mixing (physics), Physics, Muon, 010308 nuclear & particles physics, Dirac (video compression format), High Energy Physics::Phenomenology, MAJORANA, Physique des particules élémentaires, Física nuclear, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment, Lepton
Abstract

We have searched for possible fourth family heavy neutrinos, pair produced in Z0 decays, in a sample of about 112 000 hadronic Z0 final states collected with the DELPHI detector. For all mixing matrix elements we exclude a new Dirac neutrino lighter than 44.5 GeV at a 95% confidence level, if the neutrino couples to the electron or muon family, and lighter than 44.0 GeV, if the neutrino couples to the tau family. Depending on the values of the mixing element and to which lepton family the neutrino couples, we obtain mass limits up to 46.2 GeV. For all mixing matrix elements we exclude a new Majorana neutrino lighter than 39.0 GeV, if it couples to the electron or the muon family, and lighter than 38.2 GeV, if it couples to the tau family. Depending on the values of the mixing matrix element and to which lepton family the neutrino couples, we obtain mass limits up to 44.7 GeV. We also exclude stable new Dirac neutrinos lighter than 45.0 GeV and new Majorana neutrinos lighter than 39.5 GeV., 0, info:eu-repo/semantics/published

Published
1992
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40. A search for neutral higgs particles in Z$^0$ decays

Author

A. Markou, G. Skjevling, J. W. Lamsa, George Kalkanis, P. B. Renton, F. Barao, I. Lippi, C. Gaspar, E. N. Tsyganov, D. C. Fries, P. Herquet, L.J. Carroll, J. Dolbeau, P. Bambade, P.S.L. Booth, R. Sekulin, V. Canale, E. C. Katsoufis, Marta Calvi, E. Higon, R. Seufert, R. Contri, U. Nau-Korzen, Itzhak Roditi, J. H. Wickens, Jose Luis Contreras, Edoardo Castelli, F. Pierre, J. A M A Buytaert, P. Allen, F. Kapusta, D. Vilanova, J-C. Marin, R. Gokieli, G. Sette, A. Elliot Peisert, M. De Beer, M. Bonesini, Geoffrey Smith, F. Scuri, M. Houlden, Manolis Dris, L. Vitale, L. S. Vertogradov, D. Radojicic, Jan Ridky, P. Lutz, F. Simonetto, Fernand Grard, D. Crennell, F. Mandl, B. W. Heck, G. Ekspong, N. Magnussen, Spyros Tzamarias, Rupert Leitner, R. Mc Nulty, G. W. Van Apeldoorn, E. Lillethun, H. De Boeck, B. Jean-Marie, T. Bolognese, C. Caso, Giovanni Darbo, J. J. Hernandez, S. Simonetti, L. Lanceri, G. Maehlum, Pierre Astier, S-O. Holmgren, S. Braibant, A. Lopez-Fernandez, Tuure Tuuva, Abdenour Lounis, W. Kucewicz, M. Pegoraro, J. Maillard, Tord Ekelof, H. Staeck, Jose M. Benlloch, A. Grant, L. Ventura, Y. Lemoigne, W. Bonivento, A. Baroncelli, A. Klovning, U. Mjoernmark, C. Bosio, M. Begalli, C. Kourkoumelis, R. Sosnowski, F. Naraghi, V. G. Timofeev, Eugene P. Gross, T. Hofmokl, Marek Szczekowski, S. Gumenyuk, R. A. Brenner, Hans Dijkstra, P. Privitera, B. Loerstad, B. Boštjančič, G. Matthiae, Y. Dufour, M. P. Clara, M. H. Gros, V. Vrba, P. Van Dam, U. Kruener-Marquis, V. Perevozchikov, P. D. Dauncey, Sandor Czellar, E. Rosso, H. Klein, S. J. Alvsvaag, M. Kopf, L. Jonsson, M. Turala, H. Burmeister, Paolo Ronchese, E. G. Anassontzis, Th. D. Papadopoulou, M. T. Trainor, M. Wayne, Guenakh Mitselmakher, G. Lenzen, Lucio Cerrito, J. Krstic, F. Carena, B. Dalmagne, K. Rybicki, Laurent Chevalier, P. Weilhammer, G. Polok, Maria Elena Pol, Renato Turchetta, N. J. Kjaer, K. D. Brand, P. N. Bogolubov, A. Koch-Mehrin, M. Jonker, Robert S. Brown, C. De La Vaissiere, Mogens Dam, M. Bonapart, S. Katsanevas, R. Zitoun, Francesca Romana Cavallo, P. Yepes, V. Ruhlmann, S. Tavernier, Jon Christopher Wikne, V. Bocci, E. Dahl-Jensen, J. P. Engel, A. Passeri, Goeran Jarlskog, T. Henkes, G. Crosetti, Evgueni Vlasov, M. V. Castillo Gimenez, F. Fulda-Quenzer, Milos Lokajicek, P. Poropat, José Salt, P. Negri, Louis Lyons, M. Paganoni, V. V. Lapin, A. Tilquin, T. A. Filippas, M. Crozon, A. G. Olshevski, A. J. Camacho Rozas, Antonio Ferrer, E. Graziani, M. Los, V. Lepeltier, A. S. Vodopyanov, J. M. Brunet, K. Woschnagg, L. Vibert, Cristian Stanescu, P. Branchini, D. Z. Toet, P. Siegrist, A. M. Wetherell, G. Tristram, Paula Eerola, G. Wormser, Pieter David, D. J. Holthuizen, Evangelos Gazis, Andrey Korytov, H. Herr, C. De Clercq, J. A. Valls Ferrer, H. J. Hilke, H. Furstenau, Paolo Checchia, G. Vegni, Ph. Gavillet, T. Moa, P. Vaz, Barry King, G. Gopal, H. Schneider, K. A. J. Forbes, S. D. Hodgson, Patrick Jarry, G. Rinaudo, N. Demaria, G. Damgaard, L. O. Eek, R. C. Shellard, W. J. Murray, R. Lauhakangas, R. Barate, L. Tortora, F. J. Harris, W. Trischuk, W. Krupinski, Josef Hrubec, K. Furnival, Y. Sacquin, T. Buran, E. Spiriti, A. Fenyuk, A. Letessier-Selvon, E. J. Sanchez, Guido Barbiellini, A. Firestone, M. Dracos, G. Smadja, P. Roudeau, M. Sessa, L. Di Ciaccio, A. M. Segar, J. Guy, Carlos Lacasta, Jan Krolikowski, N. N. Khovanski, W. Bartl, R. Frühwirth, Mikko Voutilainen, J. Timmermans, Demetrios Loukas, A. Zalewska, H. Mueller, J. Sanchez, Ph. Charpentier, Wolfgang Adam, L. Mathis, Guy Wilkinson, P. Jalocha, W. T. Meyer, H. P. Borner, Stefan Schael, Tiziano Rovelli, M. Donszelmann, Olga Botner, R. Lucock, M. J. Bates, P. S. Iversen, P. Billoir, D. Wormald, Flavio Fontanelli, Piotr Zalewski, J. N. Jackson, V. Gracco, W. D. Apel, Krzysztof Korcyl, M. Pimenta, Tiziano Camporesi, A. Lipniacka, G. Cosme, S. Haider, M. Vollmer, U. Rossi, Paolo Giacomelli, D. Husson, E. K. Johansson, M. Kostrikov, Carmen García, G. Leder, C. O. Higgins, Tim Adye, L. Bugge, D. Gamba, G. Grosdidier, G. Voulgaris, B. Åsman, L. G. Tkatchev, Yu. Belokopytov, Alessandra Romero, N. G. Redaelli, H. Forsbach, H. Foeth, Marco Bozzo, V.A. Uvarov, S. Delorme, I. A. Tyapkin, G. E. Theodosiou, M. Schaeffer, C. Ronnqvist, G. Zhang, A. P. Ostankov, Mario Sannino, M. A. Lopez Aguera, R. J. Apsimon, R. Zukanovich Funchal, C. Walck, A. Ruiz, J. Kesteman, J. P. Laugier, M. A E Schyns, P. F. Honore, B. Ueberschaer, S. C. Blyth, O. Pingot, P. Frenkiel, P. Ioannou, M.D.M. De Fez Laso, J. Garcia, K. Kurvinen, I. Herbst, G. D. Alekseev, B. Koene, P. Grosse-Wiesmann, A. De Angelis, P. Collins, D. Delikaris, M. S. Bilenky, A. N. Sissakian, D. Y. Bardin, B. Grossetete, M. Fernandez Alonso, F. Waldner, Allan Hallgren, A. Tsirou, Giovanni Valenti, N.I. Zimin, P. Kluit, V. Obraztsov, J. Werner, Luc Pape, Alexander Lincoln Read, Daniel Bloch, Juan Fuster, Klaus Moenig, P. Kokkinias, T. B. Skaali, D. Bertrand, Ahmimed Ouraou, V.M. Golovatyuk, A. Pullia, O. Doll, Paolo Morettini, G. Hamel de Monchenault, B. Bouquet, I. Roncagliolo, P. Folegati, J. E. Hooper, P. Beilliere, Josef Strauss, W. Venus, S. Dagoret, M. Mc Cubbin, W. Ruckstuhl, Paul Baillon, K. Hultqvist, J. P. Gerber, M. Szeptycka, H. Wahlen, P. Beltran, I. Kronkvist, R. Orava, P. N. Ratoff, K. W. Glitza, M. Pernicka, M. Feindt, I. Hietanen, T. Todorov, Borge Svane Nielsen, J. J. Lozano, Klaus Hamacher, B. Nijjhar, O. Barring, M. L. Turluer, D. Reid, M. Berggren, A. Augustinus, Jesus Marco, W. Dulinski, E. Menichetti, Krzysztof Doroba, Gianni Zumerle, R. Strub, Stefano Ragazzi, C. Vander Velde, W. K. Van Doninck, F. Richard, C. Matteuzzi, M. Koratzinos, M. Hahn, F. Cao, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, G. Galeazzi, S. Almehed, Martino Margoni, E. Fokitis, E. I. Rosenberg, S. Marti, M. Richardson, A. Perrotta, W. Mitaroff, D. Benedic, M. Tyndel, G. Borisov, M. Baubillier, G. Sajot, Dietrich Liko, T. Kreuzberger, M. Battaglia, G. Kalmus, J. E. Augustin, F. Bianchi, M. Matveev, M. Boratav, B. De Lotto, H. B. Crawley, Daniel Treille, R. Holmes, J. Cuevas Maestro, B. A. Khomenko, N. De Groot, J. Lindgren, Nikita Smirnov, Chiara Meroni, A. Stocchi, Francesco Navarria, C. Defoix, J. Zúñiga, A. Campion, S. Volponi, Marc Winter, C. Troncon, Ariel Goobar, J. H. Koehne, K. H. Becks, E. Vallazza, F. Couchot, J. Bjarne, P. Antilogus, W. Klempt, F. Hahn, F. Stichelbaut, R. Mc Kay, M. Regler, D. Zavrtanik, F. Adami, S. Vlassopoulos, R. Keranen, Francisco Matorras, N. Yamdagni, P. Abreu, P. Borgeaud, J. G. Loken, Ariella Cattai, U. Gasparini, C. J. Beeston, D. Isenhower, Gueorgui Chelkov, S. Squarcia, H. Saarikko, T. Tabarelli, E. Lieb, D. Fassouliotis, R. Llosa, A. G. Frodesen, F. Ledroit, Jacques Lemonne, O. Ullaland, U. Trevisan, Torsten Paul Ake Åkesson, B. Franek, Z. Hajduk, Maciej Górski, M. Davenport, A. Hakansson, P. V. Chliapnikov, N. Brummer, J. Pyyhtia, D. Johnson, J. Derkaoui, A. Chan, W.S.C. Williams, G. Stavropoulos, V. Chorowicz, Alexander Zaitsev, R. Moeller, Roberto Cirio, L. K. Resvanis, Massimo Caccia, P. Juillot, F. Djama, V. Nikolaenko, T. S. Spassoff, M. Mazzucato, A. De Min, P. Szymanski, Joao Varela, J. J. Gomez Y Cadenas, R. Pain, S. Ueberschaer, A. Maltezos, F. Verbeure, C. Bricman, J. Drees, M. Michelotto, M. Zito, M. R. Monge, P. O. Hulth, P. Delpierre, E. Daubie, G. Myatt, H. Palka, G. Meola, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), 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), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, STANDARD MODEL, 01 natural sciences, Lower limit, Standard Model, Nuclear physics, PHYSICS, LIMITS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Boson, Physics, MASS SCALAR BOSON, LIGHT SCALAR, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Z0 DECAY, E+E COLLISIONS, Supersymmetry, SUPERSYMMETRIC MODELS, LEP, NUCLEAR DECAY, Higgs boson, High Energy Physics::Experiment, Física nuclear, Particle Physics - Experiment, Minimal Supersymmetric Standard Model
Abstract

The search in DELPHI data for neutral Higgs bosons is described. No candidate for the Standard Model Higgs is seen in Z0 decays to H 0 ν ν , H 0 μ + μ − or H0τ+τ− after selections that proved efficient for finding simulated H0. One remaining candidate for Z0 → H0e+e− is consistent with background. Together with our earlier studies, these results restrict the H0 mass to be above 38 GeV/c2 at the 95% confidence level. No signal is found for decays of Minimal Supersymmetric Standard Model neutral Higgs bosons to τ+τ−. Limits are obtained for their decays to produce four jets.

Published
1992
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41. Multiplicity dependence of mean transverse momentum in $e^+e^-$ annihilations at LEP energies

Author

N. Vishnevsky, Tiziano Rovelli, D. Bertrand, N. Redaelli, S. Braibant, J. Bjarne, Rupert Leitner, G. Matthiae, V. Ronjin, P. Antilogus, H. Palka, G. Skjevling, C. Ronnqvist, J.-M. Brunet, A. P. Ostankov, F. Simonetto, P.H. Kramer, E. Lieb, P. Folegati, M. Bonesini, M. Bozzo, C. Gaspar, H. Foeth, K. Rybicki, W. Ruckstuhl, G. Leder, B. Åsman, Fernand Grard, W. Klempt, R. A. Brenner, Luc Pape, F. Barao, G. Sette, R. J. Apsimon, M. Jonker, D. Crennell, M. Paganoni, Joao Varela, G. Crosetti, G. Sajot, J. J. Gomez Y Cadenas, F. Mandl, P. Beltran, P. Grosse-Wiesmann, A. De Angelis, P. Collins, D. Delikaris, M. Bonapart, P. O. Hulth, E. Daubie, P. Herquet, S. J. Alvsvaag, M. Berggren, E. Higon, F. Scuri, G. Hamel de Monchenault, Winfried Mitaroff, B. Koene, K.-H. Becks, A. Maltezos, M. Crozon, T. Todorov, B. W. Heck, M. Vollmer, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, P. Beilliere, Louis Lyons, G. W. Van Apeldoorn, F. Naraghi, A. M. Wetherell, Josef Strauss, Jelena Krstic, F. Verbeure, M. L. Turluer, D. Reid, P. David, J. Werner, W. Bonivento, M. Turala, M.A.E. Schyns, P. Abreu, A. Chan, W.S.C. Williams, A. Katargin, Mogens Dam, C. Caso, L. Lanceri, W. Venus, P. Morettini, J. G. Loken, L. Ventura, A. Ruiz, T. Maron, M. Los, V. Lepeltier, Dietrich Liko, J.-E. Augustin, A. De Min, M.R. Monge, C. Bricman, S. Ueberschaer, M. Weierstall, R. Moeller, Roberto Cirio, L. K. Resvanis, Andrea Perrotta, I. Kronkvist, Massimo Caccia, Vladimir Nikolaenko, F. Fontanelli, W. Krupinski, D. Husson, W. Dulinski, Gianni Zumerle, I. Lippi, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, V. Vrba, M. Kopf, Manolis Dris, S. Dagoret, Eilam Gross, D.C. Fries, C. O. Higgins, C. Matteuzzi, Ugo Gasparini, Lucio Cerrito, M. A. Winter, Y. Lemoigne, A. Elliot Peisert, P. D. Dauncey, P. Borgeaud, Demetrios Loukas, Patrick Jarry, G. Rinaudo, H. J. Hilke, W.-D. Apel, M. Voutilainen, G. Grosdidier, P. Siegrist, K. Oesterberg, Jon Christopher Wikne, E. Lillethun, R. Seufert, F. Fulda-Quenzer, L. Vitale, Daniel Treille, Paolo Ronchese, D. Radojicic, F. Stichelbaut, O. Barring, T. Henkes, B. De Lotto, Evgueni Vlasov, P. Delpierre, P. Poropat, Andromachi Tsirou, N. J. Kjaer, Antonio Ferrer, R. Lauhakangas, Alessandra Romero, Andre Augustinus, Paolo Checchia, Ph. Gavillet, Guido Barbiellini, J. Guy, D. J. Holthuizen, J.-P. Engel, Edoardo Castelli, F. Pierre, J. Kesteman, R. Mc Nulty, V. Kostiukhin, D. Isenhower, Jan Ridky, P. Frenkiel, K. A. J. Forbes, S. D. Hodgson, G. Zhang, Mario Sannino, L. Chaussard, K. Woschnagg, S. Squarcia, W. K. Van Doninck, R. Mc Kay, P. Allen, D. Zavrtanik, M. Sessa, Tuure Tuuva, H. De Boeck, M. Tyndel, B. Bouquet, P. Van Dam, W. Kucewicz, K. Furnival, E. C. Katsoufis, G. Gopal, H. Herr, L. G. Tkatchev, P. F. Honore, R. Holmes, H. Saarikko, H. Wahlen, V. Bocci, T. Buran, M. Richardson, A. N. Sissakian, G. Wormser, F. Adami, S. Vlassopoulos, T. S. Spassoff, M. Donszelmann, R. Pain, E. J. Sanchez, R. Llosa, H. Staeck, G. Ekspong, M. Mazzucato, P. Roudeau, P. Juillot, Tim Adye, G. D. Alekseev, E. Torassa, F. Richard, B. Jean-Marie, M. T. Trainor, G. E. Theodosiou, D. Fassouliotis, Ariella Cattai, C. Bosio, G. Meola, P. N. Bogolubov, F. Ledroit, Jacques Lemonne, J-C. Marin, Christine Kourkoumelis, E. Dahl-Jensen, V. Gracco, B. Dalmagne, Olga Botner, R. Orava, Spyros Tzamarias, M. Karlsson, O. Ullaland, R. Gokieli, Leif J. Jönsson, Krzysztof Korcyl, S. Almehed, M. J. Bates, P. N. Ratoff, Jmv Garcia, M. Pimenta, Evangelos Gazis, M. Michelotto, B. A. Khomenko, Wolfgang Adam, G. Borisov, W. De Boer, M. Mc Cubbin, B. Boštjančič, V. Perevozchikov, K. Hultqvist, Theodora Papadopoulou, V. Canale, J. Chauveau, Claire Bourdarios, B. Franek, Georgios Stavropoulos, O. Pingot, G. Wilkinson, M.D.M. De Fez Laso, M. S. Bilenky, C. De La Vaissiere, Laurent Chevalier, Carmen García, Renato Turchetta, S. Tavernier, A. Tilquin, U. Kruener-Marquis, J. Lindgren, M. Begalli, J. W. Lamsa, E. I. Rosenberg, N. De Groot, P. Szymanski, Milos Lokajicek, B. Grossetete, A. Stocchi, F. Hahn, S. Marti, Toralf Bernhard Skaali, G. Voulgaris, A. G. Olshevski, G. Lenzen, K. Kurvinen, Javier Sánchez, M. Baubillier, S. Schael, J. Cuevas Maestro, L.J. Carroll, C. Meroni, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, A. Campion, S. Volponi, M. Davenport, M. Dracos, M.A. Lopez Aguera, G. Tristram, Paula Eerola, R. Barate, G. E. Kalmus, Maria Elena Pol, Barry King, S. Katsanevas, Yu. Belokopytov, D. Y. Bardin, Guenakh Mitselmakher, A. M. Zaitsev, Alexander Vodopyanov, T. Tabarelli, R. Sekulin, F. Carena, Francesco Navarria, Francesca Romana Cavallo, F. Bianchi, J. Zúñiga, P. Privitera, D. Vilanova, Mitchell Wayne, S. Ragazzi, E. Menichetti, Tord Ekelof, R. Frühwirth, F. J. Harris, T. A. Filippas, K. D. Brand, J. Pennanen, G. Cosme, M. Regler, P. Weilhammer, R. Zukanovich Funchal, J. Drees, O. Toker, M. De Beer, N. I. Zimin, V. Ruhlmann, J. Timmermans, F. Cao, S. L. Blyth, A. Lipniacka, A. Zalewska, H. Schneider, P. Vaz, P. Lutz, W. T. Meyer, P. Yepes, A. Firestone, V. V. Lapin, B. Loerstad, M. Battaglia, Carlos Lacasta, José Salt, J. J. Hernandez, C. Troncon, L. Bugge, Juan Fuster, Ariel Goobar, D. Gamba, N. Demaria, V.A. Uvarov, J. Maillard, S. O. Holmgren, D. Wormald, C. De Clercq, Y. Sacquin, D. Z. Toet, N. Brummer, T. Moa, G. Maehlum, P. Branchini, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, G. Smadja, V. Chorowicz, J. H. Koehne, P. Negri, P. Jalocha, W. J. Murray, L. S. Vertogradov, L. Tortora, U. Trevisan, K. Belous, G. Galeazzi, M. Schaeffer, H. Burmeister, E. Vallazza, R. Strub, H. P. Borner, C.J. Beeston, Martino Margoni, E. Fokitis, Y. Dufour, F. Couchot, P.S.L. Booth, L. O. Eek, R. C. Shellard, Josef Hrubec, Abdenour Lounis, T. Bolognese, Robert S. Brown, D. Johnson, J. N. Jackson, B. Muryn, M. Pernicka, I. Hietanen, G. Darbo, R. Contri, S. Haider, P. Kokkinias, Sandor Czellar, R. Sosnowski, A. M. Segar, T. Hofmokl, Marek Szczekowski, V. G. Timofeev, I. Roncagliolo, George Kalkanis, P. B. Renton, U. Rossi, Tiziano Camporesi, H. Mueller, E. Spiriti, A. Lopez-Fernandez, P. S. Iversen, A. Wehr, E. Rosso, H. Klein, E. K. Johansson, L. Mathis, J. Marco, M. P. Clara, Paolo Giacomelli, H. Briand, G. Polok, M. Koratzinos, Fares Djama, Matteo Pegoraro, P. Zalewski, E. Graziani, M. Hahn, A. Baroncelli, A. G. Frodesen, Geoffrey Smith, R. Lindner, S. Delorme, K. Hamacher, I. A. Tyapkin, M. Calvi, G. Myatt, A.J. Camacho Rozas, J. Dolbeau, M. Feindt, Torsten Paul Ake Åkesson, M. Zito, H. Furstenau, H. B. Crawley, William Trischuk, A. Markou, F. Waldner, Z. Hajduk, A. Letessier-Selvon, E. G. Anassontzis, G. Vegni, P. Bambade, M. V. Castillo Gimenez, C. Walck, Göran Jarlskog, Maciej Górski, Jose M. Benlloch, A. Grant, G. Damgaard, P. Billoir, A. Hakansson, Hans Dijkstra, Cristian Stanescu, C. Defoix, P. V. Chliapnikov, S. Simonetti, Pavlos Ioannou, Klaus Moenig, M. A. Houlden, Allan Hallgren, Borge Svane Nielsen, J. J. Lozano, Giovanni Valenti, Krzysztof Doroba, F. Kapusta, Jan Buytaert, D. Benedic, Peter Kluit, A. Passeri, A. Klovning, U. Mjoernmark, Andrey Korytov, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, W. Bartl, J. A. Valls Ferrer, J. P. Laugier, C. Vander Velde, G. A. Chelkov, C. Lambropoulos, Ugo Amaldi, E. Zevgolatakos, T. Kreuzberger, J. P. Gerber, B. Nijjhar, A. Pullia, W. Da Silva, M. Fernandez Alonso, V. Obraztsov, J. E. Hooper, R. Zitoun, Itzhak Roditi, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Abreu, P., Adam, W., Canale, Vincenzo, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
Nuclear and High Energy Physics, Particle physics, COLLISIONS, Electron–positron annihilation, Hadron, Nuclear Theory, ISR ENERGIES, ANTI-PROTON COLLIDER, SPECTRA, EVENTS, MATTER, QCD, Radiation, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Multiplicity (chemistry), 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Charged particle, Gluon, Transverse momentum, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

A strong increase of the mean transverse momentum [p(t)] with the number of charged particles n(ch) is observed in e+e- annihilations into hadrons at LEP energies, The effect resembles correlations observed in hadron-hadron interactions. In e+e- annihilations the [p(t)] and n(ch) correlations can be accounted for by gluon radiation.

Published
1992
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42. Charged particle multiplicity distributions in restricted rapidity intervals in Z0 hadronic decays

Author

P. Van Dam, Renato Turchetta, G. E. Theodosiou, S. C. Blyth, Francesca Romana Cavallo, G. Wilkinson, M.D.M. De Fez Laso, Mitchell Wayne, A. Tilquin, J. J. Lonzano, Barry King, L. DiCiaccio, E. Spiriti, V. V. Lapin, L. Mathis, Lucio Cerrito, R. Frühwirth, J. Timmermans, Natale Demaria, W. J. Murray, T. Todorov, A. Lipniacka, P. Kapusta, Paul Baillon, M. L. Turluer, D. Reid, Alexander Lincoln Read, M. Szeptycka, G. Meola, N. Degroot, Gianni Zumerle, George Kalkanis, P. B. Renton, P. Poropat, Andromachi Tsirou, G. Crosetti, R. Dzehlyadin, V. Ruhlmann, G. D. Alekseev, Andre Augustinus, M. Richardson, J. E. Augustin, B Delotto, D. C. Fries, M. Baubillier, G. Vegni, M. Battaglia, N. Brummer, T. Tabarelli, E. Lieb, P. Abreu, P. Borgeaud, G. Wormser, D. Fassouliotis, Ariella Cattai, O. Ullaland, Leif J. Jönsson, U. Trevisan, T. Bolognese, V. Canale, B. Franek, Andrea Perrotta, G. Sette, F. Alted, A. Elliot Peisert, L. Bugge, A. M. Zaitsev, Alexander Vodopyanov, B. Koene, C. J. Beeston, H. Herr, L. G. Tkatchev, F. Bianchi, A. J. Camacho Rozas, J. Pyyhtia, F. Naraghi, D. J. Holthuizen, D. Isenhower, A. Pinsent, D. Y. Bardin, D. Z. Toet, S. Squarcia, R. Holmes, H. Saarikko, S. Haider, P. D. Dauncey, Sandor Czellar, Kjell Fransson, K. Hultqvist, Paolo Morettini, M. S. Bilenky, D. Johnson, L.J. Carroll, J. G. Loken, Marta Calvi, Tord Ekelof, H. Staeck, G. Polok, K. Furnival, M. Tyndel, Georgios Stavropoulos, Geoffrey Smith, P. David, Edoardo Castelli, J. Cuevas Maestro, F. Pierre, J. Derkaoui, A. Passeri, C. Caso, J. Maillard, B. Loerstad, Stavros Maltezos, R. Lucock, P. Allen, W.S.C. Williams, D. Vilanova, Borge Svane Nielsen, E. Menichetti, Itzhak Roditi, M. H. Gros, E. K. Johansson, Wolfgang Adam, Stefano Ragazzi, D. Bertrand, O. Barring, G. Ekspong, F. Ledroit, W.H. Range, V. Perevozchikov, Krzysztof Doroba, A. D. Angelis, M. J. Bates, Chiara Meroni, Jan Buytaert, P. Weilhammer, Theodora Papadopoulou, H. Burmeister, F. Cao, Tiziano Rovelli, P. Folegati, Yu. Belokopytov, N. Crosland, R. McKay, Giovanni Darbo, W. Ruckstuhl, Toralf Bernhard Skaali, H. B. Crawley, G. Hamel de Monchenault, S. O. Holmgren, W. Krupinski, Josef Strauss, F. Stichelbaut, H. DeBoeck, P. Beltran, N. Vishnevsky, L. S. Vertogradov, Robert S. Brown, P. Vaz, S. Simonetti, P. Beiliere, G. Smadja, G. Kantardjian, D. Benedic, W. Venus, Peter Kluit, H. J. Hilke, M. Bozzo, Klaus Hamacher, E. G. Anassontzis, Tiziano Camporesi, G. Galeazzi, M. Begalli, G. Cosme, M. Kopf, K. Moenig, R. Moeller, Antonio Ferrer, J. P. Engel, M. V. Castillo Gimenez, M. Mazzucato, Mario Sannino, W. Kucewicz, A. Lounis, A. Klovning, P. Jalocha, S. Biagi, P. Szymanski, A. Lopez-Fernandez, U. Mjoernmark, C. Bosio, R. A. Brenner, C. Vander Velde, M. Boratav, D. Gamba, G. Voulgaris, N. G. Redaelli, S. J. Alvsvaag, F. Adami, Martino Margoni, E. Fokitis, M. A. Lopez Aguera, B. Bouquet, G. Damgaard, A. Demin, L. O. Eek, Jon Christopher Wikne, Roberto Cirio, R. C. Shellard, Josef Hrubec, Tuure Tuuva, C. Defoix, A. M. Segar, R. Keranen, L. K. Resvanis, F. Fulda-Quenzer, H. P. Borner, Clara Troncon, O. Pingot, Matteo Pegoraro, A. G. Frodesen, E. Graziani, P. Frenkiel, B. Korzen, K. Rybicki, F. Waldner, V. Gracco, C. Walck, J. M. Brunet, Tomaradze, F. Simonetto, F. Kapusta, G. Leder, P. S. Iversen, F. Fontanelli, Ugo Gasparini, Patrick Jarry, G. Rinaudo, B. Jean-Marie, Philippe Charpentier, Francisco Matorras, C. De La Vaissiere, Pavlos Ioannou, A. Ostankow, F. Verbeure, Torsten Paul Ake Åkesson, M. Bonapart, S. D. Hodgson, Massimo Caccia, Andrey Korytov, Mogens Dam, N. Yamdagni, Z. Hajduk, Stefaan Tavernier, Maciej Górski, H. Forsbach, C. Ronnqvist, G. Zhang, T. Buran, K. D. Brand, Vladimir Nikolaenko, Guido Barbiellini, J. Velasco, J. Guy, B. Åsman, N. I. Zimin, D. Crennell, F. Mandl, M. A. Houlden, R. Orava, Fernand Grard, Winfried Mitaroff, Louis Lyons, A. Hakansson, Jan Krolikowski, N. N. Khovanski, G. W. Van Apeldoorn, P. Siegrist, W. Bartl, R. Pain, L. Ventura, Tim Adye, A. Romero, F. Couchot, J. A. Valls Ferrer, J-C. Marin, I. Herbst, W. Dulinski, P. V. Chliapnikov, J. P. Laugier, F. Djama, Olga Botner, C. Lambropoulos, Ugo Amaldi, Krzysztof Korcyl, B. W. Heck, B. D'Almagne, Spyros Tzamarias, J. Bjarne, Juan Fuster, F. Richard, C. Matteuzzi, M. Hahn, P. Antilogus, B.D. Hyams, V. Kostukhin, V. Chorowicz, G. A. Chelkov, W. Klempt, S. Almehed, I. Lippi, Hans Muller, P. N. Bogolubov, M. Pimenta, B. A. Khomenko, Carmen García, M. Davenport, E. I. Rosenberg, F. Hahn, A. Pullia, E. Zevgolatakos, H. Foeth, Demetrios Loukas, Francesco Navarria, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, A. Campion, S. Volponi, Christine Kourkoumelis, E. Dahl-Jensen, J. Zúñiga, H. Furstenau, K. Kurvinen, Javier Sánchez, P. O. Hulth, R. Zukanovich Funchal, Marc Winter, P. Delpierre, E. Daubie, Luc Pape, H. Wahlen, Ariel Goobar, J. H. Koehne, D. Radojicic, G. Myatt, T. Hofmokl, Marek Szczekowski, E. Rosso, H. Klein, J.M. Gago, P. Collins, D. Delikaris, K. H. Becks, N. van Eijndhoven, J. Werner, Daniel Bloch, P. Lutz, Joao Varela, J. J. Gomez Y Cadenas, Ahmimed Ouraou, V.M. Golovatyuk, S. Ueberschaer, W. DeBoer, A. Maltezos, V. G. Timoveev, M. Michelotto, K. Woschnagg, E. C. Katsoufis, G. Gopal, J. Dolbeau, P. Bambade, R. Sekulin, E. J. Sanchez, T. Kreuzberger, P.S.L. Booth, P. N. Ratoff, J. J. Hernandez, T. Moa, G. Maehlum, W. Van Doninck, A. G. Olshevski, Charles Bricman, William Trischuk, A. Markou, A. Stocchi, Maria Roberta Monge, A. Zalewska, W. T. Meyer, J. P. Gerber, Jacques Lemonne, M. P. Clara, K. W. Glitza, M. Schaeffer, Maria Elena Pol, S. Katsanevas, B. Nijjhar, A. Firestone, Jorge-Armando Benitez Garcia, T. A. Filippas, M. Vollmer, U. Rossi, Paolo Giacomelli, M. Debeer, M. Fernandez Alonso, M. Regler, S. Delorme, M. Zito, V. Obraztsov, E. V. Viasov, I. Roncagliolo, B. Grossetete, Allan Hallgren, J. E. Hooper, Giovanni Valenti, P. Yepes, U. Kruener-Marquis, R. McNulty, S. Braibant, Paolo Ronchese, N. J. Kjaer, H. Mueller, M. T. Trainor, Paula Eerola, G. E. Kalmus, H. Palka, G. Skjevling, J. W. Lamsa, F. Barao, E. Higon, R. Seufert, F. Scuri, A. M. Wetherell, L. Lanceri, Laurent Chevalier, Milos Lokajicek, P. Jullot, L. Tortora, F. J. Harris, D. Wormald, Pierre Billoir, G. Matthiae, M. Chapkin, Jose M. Benlloch, A. Grant, Hans Dijkstra, P. Privitera, R. Sosnowski, M. Jonker, Mikael Berggren, M. Los, V. Lepeltier, Paolo Checchia, Ph. Gavillet, Piotr Zalewski, C. Declercq, V.A. Uvarov, M. McCubbin, J. N. Jackson, M. Voutilainen, G. Grosdidier, P. Kokkinias, M. Crozon, A. Ruiz, J. Kesteman, P. F. Honore, A. N. Sissakian, R. Llosa, Claudia J. Stubenrauch, P. Negri, J.H. Bibby, J. Drees, Göran Jarlskog, Evangelos Gazis, A. Letessier-Selvon, Guenakh Mitselmakher, M. Dracos, M. Bonesini, Y. Sacquin, W. D. Apel, G. Tristam, José Salt, L. Vibert, Cristian Stanescu, P. Branchini, V. Vrba, H. Schneider, D. Husson, I. A. Tyapkin, T. S. Spassoff, R. Lauhakangas, M. Sessa, M. Donszelmann, R. Gokieli, R. Zitoun, P. Herquet, R. Contri, U. Nau-Korzen, M. Turala, Manolis Dris, M. Pernicka, I. Hietanen, P. Roudeau, Jesus Marco, G. Lenzen, E. Lillethun, R. Strub, J. E. Campagne, M. Koratzinos, Dietrich Liko, Daniel Treille, J. Ridky, J. Lindgren, Nikita Smirnov, A. Baroncelli, S. Dagoret, 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), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Abreu, P, Adam, W, Adami, F, Adye, T, Akesson, T, Alekseev, G, Allen, P, Almehed, S, Alted, F, Alvsvaag, S, Amaldi, U, Anassontzis, E, Antilogus, P, Apel, W, Åsman, B, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Bardin, D, Baroncelli, A, Barring, O, Bartl, W, Battaglia, M, Bates, M, Baubillier, M, Becks, K, Beeston, C, Begalli, M, Beiliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Benlloch, J, Berggren, M, Bertrand, D, Biagi, S, Bianchi, F, Bibby, J, Bilenky, M, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bogolubov, P, Bolognese, T, Bonapart, M, Bonesini, M, Booth, P, Boratav, M, Borgeaud, P, Borner, H, Bosio, C, Botner, O, Bouquet, B, Bozzo, M, Braibant, S, Branchini, P, Brand, K, Brenner, R, Bricman, C, Brown, R, Brummer, N, Brunet, J, Bugge, L, Buran, T, Burmeister, H, Buytaert, J, Caccia, M, Calvi, M, Camacho Rozas, A, Campagne, J, Campion, A, Camporesi, T, Canale, V, Cao, F, Carroll, L, Caso, C, Castelli, E, Castillo Gimenez, M, Cattai, A, Cavallo, F, Cerrito, L, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, G, Chevalier, L, Chliapnikov, P, Chorowicz, V, Cirio, R, Clara, M, Collins, P, Contreras, J, Contri, R, Cosme, G, Couchot, F, Crawley, H, Crennell, D, Crosetti, G, Crosland, N, Crozon, M, Cuevas Maestro, J, Czellar, S, Dagoret, S, Dahl-Jensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Dauncey, P, Davenport, M, David, P, Angelis, A, Debeer, M, Deboeck, H, Deboer, W, Declercq, C, De Fez Laso, M, Degroot, N, De La Vaissiere, C, Delotto, B, Defoix, C, Delikaris, D, Delorme, S, Delpierre, P, Demaria, N, Demin, A, Derkaoui, J, Diciaccio, L, Dijkstra, H, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dulinski, W, Dzehlyadin, R, Eek, L, Eerola, P, Ekelof, T, Ekspong, G, Elliot Peisert, A, Engel, J, Fassouliotis, D, Fernandez Alonso, M, Ferrer, A, Filippas, T, Firestone, A, Foeth, H, Fokitis, E, Folegati, P, Fontanelli, F, Forsbach, H, Franek, B, Fransson, K, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Furnival, K, Furstenau, H, Fuster, J, Gago, J, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gasparini, U, Gavillet, P, Gazis, E, Gerber, J, Giacomelli, P, Glitza, K, Gokieli, R, Golovatyuk, V, Cadenas, J, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Gros, M, Grosdidier, G, Grossetete, B, Guy, J, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Hamel De Monchenault, G, Harris, F, Heck, B, Herbst, I, Hernandez, J, Herquet, P, Herr, H, Hietanen, I, Higon, E, Hilke, H, Hodgson, S, Hofmokl, T, Holmes, R, Holmgren, S, Holthuizen, D, Honore, P, Hooper, J, Houlden, M, Hrubec, J, Hulth, P, Hultqvist, K, Husson, D, Hyams, B, Ioannou, P, Isenhower, D, Iversen, P, Jackson, J, Jalocha, P, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Johnson, D, Jonker, M, Jonsson, L, Jullot, P, Kalkanis, G, Kalmus, G, Kantardjian, G, Kapusta, F, Kapusta, P, Katsanevas, S, Katsoufis, E, Keranen, R, Kesteman, J, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klempt, W, Klovning, A, Kluit, P, Koehne, J, Koene, B, Kokkinias, P, Kopf, M, Koratzinos, M, Korcyl, K, Korytov, A, Korzen, B, Kostukhin, V, Kourkoumelis, C, Kreuzberger, T, Krolikowski, J, Kruener-Marquis, U, Krupinski, W, Kucewicz, W, Kurvinen, K, Lambropoulos, C, Lamsa, J, Lanceri, L, Lapin, V, Laugier, J, Lauhakangas, R, Leder, G, Ledroit, F, Lemonne, J, Lenzen, G, Lepeltier, V, Letessier-Selvon, A, Liko, D, Lieb, E, Lillethun, E, Lindgren, J, Lipniacka, A, Lippi, I, Llosa, R, Loerstad, B, Lokajicek, M, Loken, J, Lopez Aguera, M, Lopez-Fernandez, A, Los, M, Loukas, D, Lounis, A, Lonzano, J, Lucock, R, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maltezos, A, Maltezos, S, Mandl, F, Marco, J, Margoni, M, Marin, J, Markou, A, Mathis, L, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Menichetti, E, Meola, G, Meroni, C, Meyer, W, Michelotto, M, Mitaroff, W, Mitselmakher, G, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, M, Morettini, P, Mueller, H, Muller, H, Murray, W, Myatt, G, Naraghi, F, Nau-Korzen, U, Navarria, F, Negri, P, Nielsen, B, Nijjhar, B, Nikolaenko, V, Obraztsov, V, Olshevski, A, Orava, R, Ostankow, A, Ouraou, A, Pain, R, Palka, H, Papadopoulou, T, Pape, L, Passeri, A, Pegoraro, M, Perevozchikov, V, Pernicka, M, Perrotta, A, Pierre, F, Pimenta, M, Pingot, O, Pinsent, A, Pol, M, Polok, G, Poropat, P, Privitera, P, Pullia, A, Pyyhtia, J, Radojicic, D, Ragazzi, S, Range, W, Ratoff, P, Read, A, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, E, Rossi, U, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Salt, J, Sanchez, E, Sanchez, J, Sannino, M, Schaeffer, M, Schneider, H, Scuri, F, Segar, A, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, R, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A, Skaali, T, Skjevling, G, Smadja, G, Smith, G, Smirnov, N, Sosnowski, R, Spassoff, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stubenrauch, C, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tavernier, S, Theodosiou, G, Tilquin, A, Timmermans, J, Timoveev, V, Tkatchev, L, Todorov, T, Toet, D, Tomaradze, N, Tortora, L, Trainor, M, Treille, D, Trevisan, U, Trischuk, W, Tristam, G, Troncon, C, Tsirou, A, Tsyganov, E, Turala, M, Turchetta, R, Turluer, M, Tuuva, T, Tyapkin, I, Tyndel, M, Tzamarias, S, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Valls Ferrer, J, Van Apeldoorn, G, Van Dam, P, Van Doninck, W, Van Eijndhoven, N, Vander Velde, C, Varela, J, Vaz, P, Vegni, G, Velasco, J, Ventura, L, Venus, W, Verbeure, F, Vertogradov, L, Vibert, L, Vilanova, D, Vishnevsky, N, Viasov, E, Vodopyanov, A, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Weilhammer, P, Werner, J, Wetherell, A, Wickens, J, Wikne, J, Wilkinson, G, Williams, W, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zevgolatakos, E, Zhang, G, Zimin, N, Zito, M, Zitoun, R, Zukanovich Funchal, R, Zumerle, G, Zuniga, J, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
COLLISIONS, Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Elementary particle, PETRA ENERGIES, 01 natural sciences, 250 GEV/C, Nuclear physics, DEPENDENCE, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, Nuclear Experiment, 010306 general physics, Parton shower, Engineering (miscellaneous), JET PRODUCTION-RATES, FRAGMENTATION, QCD, RESONANCE, Physics, 010308 nuclear & particles physics, Multiplicity (mathematics), Charged particle, Gluon, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

The multiplicity distributions of charged particles in restricted rapidity intervals in Z0 hadronic decays measured by the DELPHI detector are presented. The data reveal a shoulder structure, best visible for intervals of intermediate size, i.e. for rapidity limits around ±1.5. The whole set of distributions including the shoulder structure is reproduced by the Lund Parton Shower model. The structure is found to be due to important contributions from 3-and 4-jet events with a hard gluon jet. A different model, based on the concept of independently produced groups of particles, "clans", fluctuating both in number per event and particle content per clan, has also been used to analyse the present data. The results show that for each interval of rapidity the average number of clans per event is approximately the same as at lower energies. © 1991 Springer-Verlag., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1991

43. Search for low mass Higgs bosons produced in Z$^0$ decays

Author

B. De Lotto, G. Crosetti, Evgueni Vlasov, H. Herr, R. Sekulin, T. Moa, William Trischuk, Tiziano Rovelli, G. Kantardjian, H. Forsbach, G. Zhang, V. Kostukhin, Luc Pape, Itzhak Roditi, F. Stichelbaut, B. Lorstad, F. Adami, N. Crosland, Klaus Hamacher, M. Fernandez Alonso, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, V. Obraztsov, A.G. Olshevsky, S. Gumenyuk, R. A. Brenner, D. J. Holthuizen, S. J. Alvsvaag, A. Campion, D. Bertrand, A. Lopez-Fernandez, R. Zukanovich Funchal, Marc Winter, R. Mcnulty, P. Abreu, K. Furnival, Ugo Gasparini, P. Folegati, J. P. Gerber, R. McKay, W. Ruckstuhl, Mogens Dam, Tuure Tuuva, Clara Troncon, H. Wahlen, Ariel Goobar, Guido Barbiellini, J. Guy, P. Beltran, K. W. Glitza, B. Nijjhar, Tim Adye, Wolfgang Adam, K. H. Becks, C. J. Beeston, E. Vallazza, V. Canale, E. Chernyaev, P. Siegrist, E. Menichetti, V. Castillo Gimenez, J-C. Marin, Stefano Ragazzi, W.H. Range, A. Pinsent, A. Zalewska, A.N. Sisakian, S. Squarcia, M. Richardson, F. Couchot, F. Cao, W. T. Meyer, Spyros Tzamarias, R. Holmes, H. Saarikko, G. Hamel de Monchenault, M. Kopf, M. Pernicka, N. Vishnevsky, J. Bjarne, Josef Strauss, N. I. Zimin, M. Bonapart, Jacques Lemonne, Jesus Marco, G. Lenzen, R. Strub, J. E. Campagne, R. Zitoun, W. Venus, E. K. Johansson, M. Koratzinos, J. Velasco, P. Antilogus, W. A. Mitaroff, G. Galeazzi, E. Lieb, Jon Christopher Wikne, C. Defoix, F. Fulda-Quenzer, M. Davenport, C. Vander Velde, M. Baubillier, W. Klempt, F. Hahn, A. Ferrer, D. Fassouliotis, Ariella Cattai, V. Ronzhin, F. Alted, K. Mönig, W. Kucewicz, F. Richard, Louis Lyons, Martino Margoni, P. Negri, A. A. Rademakers, G. A. Chelkov, Leif J. Jönsson, E. Graziani, J. M. Brunet, A. M. Zaitsev, E. Fokitis, G. D. Alekseev, Jorge-Armando Benitez Garcia, C. Matteuzzi, M. Hahn, J.H. Bibby, F. Bianchi, Kjell Fransson, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, W.S.C. Williams, Demetrios Loukas, Göran Jarlskog, U. Trevisan, S. O. Holmgren, A. Passeri, S. D. Hodgson, L. S. Vertogradov, S. Almehed, A. Letessier-Selvon, F. Ledroit, G. Stavropoulos, N. Magnussen, T. Buran, V. Chorowicz, B. Korzen, K. Hultqvist, A. Firestone, O. Doll, W. D. Apel, J.H. Kohne, Edoardo Castelli, B. Franek, G. Matthiae, V. Ruhlmann, V. Lapchine, L. O. Eek, R. C. Shellard, Josef Hrubec, Olga Botner, Krzysztof Korcyl, L. Bugge, T. Bolognese, G. Ekspong, T. Kreuzberger, M. Vollmer, Giovanni Darbo, A. M. Segar, S. Braibant, U. Rossi, Th. D. Papadopoulou, M. Mazzucato, Guenakh Mitselmakher, D. Vilanova, A. J. Camacho Rozas, J. Cuevas Maestro, E. G. Anassontzis, J. P. Engel, Paolo Giacomelli, A. Baroncelli, S. Dagoret, E. Lillestol, P. Szymanski, D. Z. Toet, P. S. Iversen, F. Fontanelli, S. Simonetti, G. Mahlum, M. Begalli, M. T. Trainor, S. Delorme, H. Foeth, P. D. Dauncey, Sandor Czellar, T. Todorov, M. Schaffer, P. Vaz, L. Tkachev, G. Vegni, G. Damgaard, N. Brummer, Renato Turchetta, G. Polok, H. Stack, C. De La Vaissiere, F. Udo, J. Pyyhtia, D. Johnson, R. Lucock, M. L. Turluer, D. Reid, Daniel Treille, A. Lounis, O. Pingot, A. De Angelis, D. Delikaris, B. Grossetete, Allan Hallgren, N. van Eijndhoven, J. Drees, J. Werner, V. Gracco, Daniel Bloch, L. Vibert, Pawel Jalocha, Barry King, N.N. Khovansky, S. Biagi, Giovanni Valenti, H. P. Borner, E. Spiriti, R. Frühwirth, Ahmimed Ouraou, V.M. Golovatyuk, G. E. Theodosiou, A. G. Frodesen, Cristian Stanescu, Gianni Zumerle, P. Branchini, M. Kostrikov, J. Timmermans, H. Palka, G. Skjevling, H. Schneider, Torsten Paul Ake Åkesson, Evangelos Gazis, R. Lauhakangas, P. Poropat, G. Wilkinson, M.D.M. De Fez Laso, Pavlos Ioannou, J. W. Lamsa, Andromachi Tsirou, Natale Demaria, Piet Van Dam, Z. Hajduk, F. Barao, B. Koene, Andre Augustinus, A. Wehr, J. Lindgren, Maciej Górski, M. Sessa, L. Mathis, A. Hakansson, A. Markou, Paolo Morettini, J. G. Loken, P. Beilliere, M. A. Houlden, E. Higon, R. Seufert, M. Dracos, W. Dulinski, P. V. Chliapnikov, J. E. Augustin, George Kalkanis, M. Donszelmann, F. Scuri, P. B. Renton, Paul Baillon, R. Pain, O. Barring, A. M. Wetherell, Alexander Lincoln Read, B. Bouquet, M. Szeptycka, Tiziano Camporesi, M. De Beer, R. Gokieli, D. C. Fries, K. Belous, G. Wormser, Pieter David, S. Haider, M. Bonesini, G. Cosme, L. Lanceri, Y. Sacquin, N. G. Redaelli, L. Di Ciaccio, M. Turala, Marco Bozzo, E. C. Katsoufis, W. Krupinski, Marta Calvi, Geoffrey Smith, P. Borgeaud, C. Caso, U. Kruener-Marquis, H. J. Hilke, P. Frenkiel, Paolo Ronchese, G. W. Van Apeldoorn, P. Herquet, Pierre Astier, L. Ventura, M. Boratav, F. Waldner, K. D. Brand, H. B. Crawley, R. Contri, V. Vrba, U. Nau-Korzen, C. Walck, G. Tristram, Paula Eerola, Hans Muller, Manolis Dris, Stefaan Tavernier, D. Husson, P. Roudeau, Christine Kourkoumelis, G. E. Kalmus, E. Dahl-Jensen, I. A. Tyapkin, E. Lillethun, Francesca Romana Cavallo, Mario Sannino, S. Maltezos, M. A. Lopez Aguera, Mitchell Wayne, R. Monge, V. V. Lapin, C. De Clercq, M. Jonker, R. Orava, Fernand Grard, A. B. Fenyuk, Mikael Berggren, M. Los, Andrea Perrotta, G. Sette, V. Lepeltier, Paolo Checchia, P. Bogolyubov, Ph. Gavillet, P. Privitera, H. De Boeck, B. Jean-Marie, M. Tyndel, Piotr Zalewski, J. Maillard, V.A. Uvarov, M. McCubbin, V. Perevozchikov, Pierre Billoir, R. Dzhelyadin, Jose M. Benlloch, A. Grant, M.I. Laakso, Hans Dijkstra, A. Pullia, H. Furstenau, T. Hofmokl, Marek Szczekowski, E. Rosso, H. Klein, T. Spassof, M. J. Bates, Toralf Bernhard Skaali, D. Gamba, G. Voulgaris, F. Verbeure, Ulf Mjörnmark, I. Herbst, Juan Fuster, F. Simonetto, F. Kapusta, A. Tilquin, G. Leder, P. Yepes, B. Åsman, D. Crennell, F. Mandl, G. Smadja, B. W. Heck, Dmitri Bardin, K. Woschnagg, V. Falaleev, Javier Sánchez, M. S. Bilenky, G. Gopal, L.J. Carroll, E. J. Sanchez, P. Weilhammer, I. Belokopytov, I. Lippi, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, D. Radojicic, Jan Ridky, P. Lutz, J. J. Hernandez, P. O. Hulth, P. Delpierre, E. Daubie, P. Laurikainen, G. Myatt, Patrick Jarry, G. Rinaudo, J. Salt, J. N. Jackson, B.D. Hyams, E. I. Rosenberg, J.M. Gago, K. Kurvinen, Tord Ekelof, A. Klovning, C. Bosio, H. Burmeister, Roberto Cirio, L. K. Resvanis, Robert S. Brown, Andrey Korytov, A.S. Vodopianov, Jan Krolikowski, W. Bartl, Massimo Caccia, Matteo Pegoraro, J. A. Valls Ferrer, J. P. Laugier, Vladimir Nikolaenko, Peter M. Allen, M. Pimenta, B. A. Khomenko, N. De Groot, A. Stocchi, Francesco Navarria, P. Juillot, J. Zúñiga, F. Djama, P. Kapusta, Joao Varela, J. J. Gomez Y Cadenas, Borge Svane Nielsen, J. J. Lozano, M. H. Gros, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, D. Benedic, Peter Kluit, A. Maltezos, M. Voutilainen, G. Grosdidier, M. Crozon, Alessandra Romero, I.A. Gritsaenko, A. Ruiz, J. Kesteman, Claudia J. Stubenrauch, R. Sosnowski, F. Naraghi, V. G. Timofeev, P. Kokkinias, S. Uberschar, B. Dalmagne, Laurent Chevalier, Milos Lokajicek, L. Tortora, F. J. Harris, A.K. Topphol, J. E. Hooper, D. Wormald, Maria Elena Pol, S. Katsanevas, R. Moller, T. A. Filippas, M. Regler, Walter Van Doninck, R. Llosa, J. Dolbeau, P. Bambade, P.S.L. Booth, P. N. Ratoff, Charles Bricman, M. P. Clara, L. Cerrito, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and Heyd, Yvette

Subjects
Particle physics, SCALAR BOSON, NUCLEAR DECAY, LIGHT SCALAR, LEP, ENERGIES, LIMITS, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), Electron–positron annihilation, Technicolor, Elementary particle, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Engineering (miscellaneous), Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Supersymmetry, Higgs boson, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment, Minimal Supersymmetric Standard Model
Abstract

A search for light Higgs bosons was performed using the data sample collected in 1990 by the DELPHI detector at LEP, at centre of mass energies between 88.2 and 94.2 GeV. Using the process e+e-→H0+Z0*, Z0*→ff, it is possible to exclude the existence of the standard model Higgs particle with a mass between 0 and 210 MeV/c2 at the 99% confidence level. Extending this analysis to the minimal supersymmetric standard model restricts the lightest neutral Higgs boson to masses above 28 GeV/c2 irrespective of the value of the mixing angle., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1991

44. A MEASUREMENT OF D-MESON PRODUCTION IN Z(0) HADRONIC DECAYS

Author

F. Carena, M. Szczekowski, V.A. Uvarov, T. Todorov, A. Chan, W.S.C. Williams, G. Hamel de Monchenault, M. L. Turluer, A. Passeri, Lucio Cerrito, Josef Strauss, S. Braibant, G. Stavropoulos, V. Chabaud, R. Lauhakangas, Ph. Charpentier, W. Venus, D. Reid, Guido Barbiellini, V. Chorowicz, J. Guy, W. De Silva, M. Sessa, J. N. Jackson, M. Pernicka, I. Hietanen, Patrick Jarry, G. Rinaudo, D. Benedic, Tim Adye, R. Nicolaidou, I. Kronkvist, J. Salt, Gianni Zumerle, P. Niss, Jesus Marco, R. Strub, P. Vaz, R. Sekulin, P. Kokkinias, T. S. Spassoff, M. Donszelmann, Danilo Zavrtanik, V. Kostioukhine, M. Koratzinos, J. H. Köhne, L. S. Vertogradov, P. Poropat, Louis Lyons, R. Aleksan, B. Dalmagne, Laurent Chevalier, M. Lokajicek, D. Trielle, M. Mazzucato, Heinz Pernegger, L. Tortora, F. J. Harris, P. Szymanski, J. E. Hooper, Carlos Lacasta, G. E. Theodosiou, Andromachi Tsirou, H. P. Borner, Stefan Schael, A. Daum, F. Stichelbaut, R. Mc Kay, J. J. Hernandez, A. N. Sisakian, Andre Augustinus, A. Wehr, E. K. Johansson, D. Darbo, Steinar Stapnes, E. I. Rosenberg, K. Kulka, P. Vincent, V. G. Timofeev, P. Herquet, R. Contri, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, A. M. Segar, K. A. J. Forbes, S. D. Hodgson, B. Golob, T. Buran, Itzhak Roditi, L. Mathis, G. W. Van Apeldoorn, M. Voutilainen, D. Edsall, G. Grosdidier, M. Crozon, P. Abreu, Alessandra Romero, A. Ruiz, J. Kesteman, M. A E Schyns, P. F. Honore, G. Vegni, N. Brummer, G. D. Alekseev, E. Torassa, S. C. Blyth, G. Wilkinson, M.D.M. De Fez Laso, D. Johnson, K. Kurvinen, Javier Sánchez, Ivan Mikulec, Dietrich Liko, P. Privitera, Chariclia Petridou, A. Andreazza, D. Bertrand, O. Podobrin, Manolis Dris, P. S. Iversen, Demetrios Loukas, L. Ventura, R. Lindner, Y. Lemoigne, U. Gasparini, A. Baroncelli, J. T.M. Chrin, M. Mc Cubbin, K. Hultqvist, R. Zuberi, M. Michelotto, William Trischuk, A. De Min, I. Siccama, P. Roudeau, M. Weierstall, G. Smadja, P. N. Bogolubov, G. Sajot, H. Briand, S-O. Holmgren, J. J. Gomez Y Cadenas, Tord Ekelof, H. Staeck, Olga Botner, Krzysztof Korcyl, Alberto Benvenuti, E. Dahl-Jensen, Juan Abel Barrio, P. Van Dam, E. Cortina, G. Valenti, A. G. Frodesen, C. Kourkoumelis, A. Petrolini, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, Natale Demaria, J. Ridky, R. Pain, H. Palka, G. Skjevling, Klaus Hamacher, Carmen García, W. Ruckstuhl, D. Vilanova, G. Meola, J-C. Marin, R. Keranen, Francisco Matorras, N. Yamdagni, J. Lindgren, R. Gokieli, P. H. Kramer, S. Ueberschaer, D. Souza-Santos, Pierre Billoir, A. Markou, W. A. Mitaroff, C. J. Beeston, C. De La Vaissiere, Z. Hajduk, P. Rebecchi, Th. D. Papadopoulou, P. Beltran, Stefano Ragazzi, George Kalkanis, H. Herr, L. G. Tkatchev, B. Loerstad, Guenakh Mitselmakher, S. Rossi, F. Pierre, Maciej Górski, J. W. Lamsa, P. B. Renton, J. M. Levy, M. Feindt, Themistocles Bowcock, A. Tilquin, Spyros Tzamarias, O. Tchikilev, O. Smirnova, D. C. Fries, A. Maltezos, M. Davenport, A. Hakansson, S. J. Alvsvaag, E. Agasi, Pawel Jalocha, Barry King, F. Cao, Rupert Leitner, Vincent Hedberg, S. Squarcia, R. Holmes, H. Saarikko, F. Barao, A. Seitz, P. Negri, M. Richardson, E. Spiriti, H. Burmeister, G. Maehlum, E. C. Katsoufis, G. Ekspong, W. Kucewicz, F. Richard, R. Frühwirth, J. Timmermans, Cristian Stanescu, P. Branchini, Marta Calvi, G. Borisov, Vincenzo Canale, Geoffrey Smith, C. Matteuzzi, A. Lipniacka, M. Hahn, G. Matthiae, F. Fulda-Quenzer, T. Tabarelli, Göran Jarlskog, M. Baubillier, Achille Stocchi, A. G. Olshevski, L. Chaussard, Yu. Belokopyptov, M. Chapkin, A. Grant, N. Ershaidat, A. Ferrer, V. Bocci, Robert S. Brown, H. Schneider, Tiziano Rovelli, P. V. Chliapnikov, E. Lieb, P. N. Ratoff, G. Lenzen, S. Simonetti, A. M. Zaitsev, Alexander Vodopyanov, E. Graziani, J. M. Brunet, A. Lopez-Fernandez, F. Bianchi, A. Koch-Mehrin, R. Zukanovich Funchal, Marc Winter, B. Grossetete, O. Toker, C. Troncon, H. Wahlen, M. Begalli, H. Rahmani, H. Foeth, W. D. Apel, A. Miao, D. Fassouliotis, Ariella Cattai, F. Ledroit, Paul Baillon, R. J. Apsimon, Alexander Lincoln Read, M. Szeptycka, S. Marti, B. Koene, Martino Margoni, E. Fokitis, Mogens Dam, Matteo Pegoraro, T. L. Hessing, C. Ronnqvist, G. Zhang, A. P. Ostankov, E. Higon, R. Seufert, Hans Dijkstra, C. Gaspar, R. Moeller, M. Karlsson, O. Ullaland, Leif J. Jönsson, E. Karvelas, P. Grosse-Wiesmann, A. De Angelis, S. Francon, P. Collins, Paolo Morettini, J. G. Loken, S. Bosworth, J. Werner, Maria Roberta Monge, Tuure Tuuva, Luc Pape, Andrei Nomerotski, U. Trevisan, L. K. Resvanis, V. Ruhlmann-Kleider, P. Beilliere, K. H. Becks, J. Cuevas Maestro, C. De Clerq, E. Vallazza, Daniel Bloch, D. J. Holthuizen, A. Zalewska, P. Zalewski, F. Scuri, Ahmimed Ouraou, V.M. Golovatyuk, B. Franek, M. Verlato, G. Wormser, R. Rosnowski, M. Jonker, Massimo Caccia, W. T. Meyer, A. B. Fenyuk, S. Plaszcznski, W. Hao, O. Barring, K. Furnival, Y. Sacquin, A. M. Wetherell, Vladimir Nikolaenko, L. Lanceri, Jacques Lemonne, J. E. Augustin, F. Couchot, J. Bjarne, Wolfgang Adam, Laurent Mirabito, A. Firestone, O.M. Kouznetsov, P. Juillot, V. Lepeltier, Jorge-Armando Benitez Garcia, Paolo Checchia, Ph. Gavillet, T. Moa, A. Klovning, B. Tome, P. Antilogus, Y. Arnoud, U. Mjoernmark, C. Bosio, H. J. Hilke, F. Hahn, K. D. Brand, J. Pennanen, N. I. Zimin, Claire Bourdarios, L. Vitale, A. Algeri, Flavio Fontanelli, P. O. Hulth, S. Haider, M. Vollmer, Paolo Giacomelli, L. Bugge, P. Delpierre, A. J. Camacho Rozas, E. Daubie, M. Zito, D. Z. Toet, P. Siegrist, M. Battaglia, G. Myatt, H. B. Crawley, Allan Hallgren, Andrea Perrotta, G. Sette, P. Davies, U. Haedinger, J. P. Engel, M. van der Heijden, A. Elliot Peisert, Y. Dufour, P. D. Dauncey, U. Kruener-Marquis, Sandor Czellar, M. V. Castillo Gimenez, Paolo Ronchese, G. Damgaard, R. Mc Nulty, N. J. Kjaer, Robin Campion, O. Pingot, H. De Boeck, B. Jean-Marie, M. Tyndel, G. Polok, J. Maillard, V. Gracco, P. Yepes, G. Tristram, Paula Eerola, F. Dupont, Andrey Korytov, B. Boštjančič, R. Barate, G. E. Kalmus, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, Francesca Romana Cavallo, Mitchell Wayne, V. V. Lapin, Gary John Barker, K. Woschnagg, W. J. Murray, F. Simonetto, Tiziano Camporesi, G. Gopal, G. Cosme, Jan Krolikowski, N. G. Redaelli, Marco Bozzo, P. Frenkiel, P. Ioannou, J. Straver, F. Waldner, C. Walck, J. L. Fousset, N. N. Khovanski, W. Bartl, G. Leder, M. J. Bates, D. Gamba, M. Witek, J. A. Valls Ferrer, F. Verbeure, B. Åsman, J. P. Laugier, B. Stugu, Juan Fuster, Luis Peralta, F. Kapusta, A. Pullia, H. Furstenau, D. Crennell, F. Mandl, Eugene P. Gross, T. Hofmokl, Peter M. Allen, M. Pimenta, E. Rosso, H. Klein, K. Osterberg, M. Los, B. A. Khomenko, N. De Groot, Francesco Navarria, C. Defoix, J. Zúñiga, T. Maron, I. Lippi, E.N. Tsyganov, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, Borge Svane Nielsen, J. J. Lozano, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, Peter Kluit, D. Radojicic, P. Lutz, M. S. Bilenky, L.J. Carroll, P. Weilhammer, T. Lesiak, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, T. A. Filippas, M. Regler, R. Ehret, H. Mueller, J. Dolbeau, P. Bambade, P.S.L. Booth, Charles Bricman, C. O. Higgins, Mario Sannino, M. A. Lopez Aguera, J. P. Gerber, R. Orava, Fernand Grard, B. Bouquet, B. Nijjhar, M. Berggren, C. Vander Velde, G. A. Chelkov, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, G. Sciolla, W. Van Doninck, Richard Brenner, M. Fernandez Alonso, V. Obraztsov, I. Roncagliolo, J. Drees, Evangelos Gazis, M. Dracos, M. Bonesini, Kathy Huet, Valeriy Pozdniakov, T. Bolognese, W. Bonivento, V. Vrba, J. Chauveau, I. A. Tyapkin, A. Almehed, I. V. Ajinenko, 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), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, UCL - SC/PHYS - Département de physique, 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)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
CHARMED MESONS, Quark, Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Meson, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, Charm quark, PHYSICS, Nuclear physics, 0103 physical sciences, D meson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, RESONANCE, 010306 general physics, Engineering (miscellaneous), Physics, Partial width, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Mass spectrum, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

A study of the fragmentation properties of charm and bottom quarks intoD mesons is presented. From 263 700Z 0 hadronic decays collected in 1991 with the DELPHI detector at the LEP collider,D 0,D + andD *+ are reconstructed in the modesK − π +,K − π + K + andD 0 π + followed byD 0→K − π +, respectively. The fractional decay widths $$\Gamma {{(Z^0 \to {D \mathord{\left/ {\vphantom {D {\bar D}}} \right. \kern-\nulldelimiterspace} {\bar D}}X)} \mathord{\left/ {\vphantom {{(Z^0 \to {D \mathord{\left/ {\vphantom {D {\bar D}}} \right. \kern-\nulldelimiterspace} {\bar D}}X)} {\Gamma _h }}} \right. \kern-\nulldelimiterspace} {\Gamma _h }}$$ are determined, and first results are presented for the production ofD mesons from $$c\bar c$$ and $$b\bar b$$ events separately. The average energy fraction ofD *± in charm quark fragmentation is found to be 〈X E (D *)〉 c =0.487±0.015 (stat)±0.005 (sys.). Assuming that the fraction ofD s and charm-baryons produced at LEP is similar to that around 10 GeV, theZ 0 partial width into charm quark pairs is determined to beΓ c /Γ h =0.187±0.031 (stat)±0.023 (sys). The probability for ab quark to fragment into $$\bar B_s $$ orb-baryons is inferred to be 0.268±0.094 (stat)±0.100 (sys) from the measured probability that it fragments into a $$\bar B^0 $$ orB −.

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45. PRODUCTION-RATE AND DECAY LIFETIME MEASUREMENTS OF B(S)0 MESONS AT LEP USING D(S) AND PHI MESONS

Author

A. G. Frodesen, G. E. Theodosiou, D. Gamba, M. Witek, S. C. Blyth, Z. Hajduk, F. Couchot, G. Wilkinson, M.D.M. De Fez Laso, S. O. Holmgren, C. Martinez-Rivero, J. Drees, L. S. Vertogradov, M. Pimenta, Maciej Górski, B. Stugu, B. A. Khomenko, J. Bjarne, Patrick Jarry, A. Hakansson, G. Rinaudo, I. Lippi, Evangelos Gazis, E.N. Tsyganov, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, Francesco Navarria, J. Zúñiga, P. Langefeld, B. Tome, P. Antilogus, F. Simonetto, G. Leder, Winfried Mitaroff, F. Martinez-Vidal, D. Radojicic, B. Åsman, P. H. Kramer, Pierre Billoir, H. Pernegger, Manfred Krammer, P. Lutz, Andrea Perrotta, T. Maron, Fernand Grard, L. O. Eek, R. C. Shellard, Josef Hrubec, Juan Fuster, G. W. Van Apeldoorn, R. Sosnowski, K. Kulka, P. Vincent, L. Gorn, M. Dracos, F. Hahn, D. Crennell, F. Mandl, Paul Baillon, P. V. Chliapnikov, Itzhak Roditi, O. Podobrin, A. M. Segar, P. S. Iversen, F. Fontanelli, A. G. Olshevski, L. Chaussard, Louis Lyons, R. Aleksan, Luis Peralta, F. Kapusta, A. Pullia, Maria Roberta Monge, J. Lindgren, J. Dolbeau, M. Chapkin, A. Grant, D. Zontar, Alexander Lincoln Read, M. Szeptycka, Th D. Papadopoulou, A. De Min, I. Siccama, G. Sajot, J. J. Gomez Y Cadenas, Paolo Ronchese, N. J. Kjaer, L. Ventura, R. Lindner, Y. Lemoigne, V. G. Timofeev, B. Dalmagne, Laurent Chevalier, A. Elliot Peisert, M. Bonesini, Kathy Huet, Valeriy Pozdniakov, H. Furstenau, Eugene P. Gross, T. Hofmokl, P. Rebecchi, Guenakh Mitselmakher, G. Vegni, A. Zalewska, W. T. Meyer, Lucio Cerrito, J.D. Richardson, M. A. Winter, Richard Jacobsson, A. Klovning, P. Bambade, Y. Arnoud, U. Mjoernmark, C. Bosio, P.S.L. Booth, Vladimir Cindro, J. P. Gerber, T. Bolognese, Hans Dijkstra, José Salt, M. Weierstall, T. Tabarelli, W. Bonivento, Dietrich Liko, M. Verlato, G. Wormser, Ugo Gasparini, Laurent Mirabito, R. Pain, S. Ueberschaer, D. Gillespie, Chariclia Petridou, O. Smirnova, E. Rosso, H. Klein, V. Bocci, G. Tristram, Paula Eerola, R. Henriques, D. Bertrand, Wojciech Kucewicz, M. S. Bilenky, L.J. Carroll, B. Grossetete, O. Toker, J. Medbo, F. Dupont, Andrey Korytov, D. Vilanova, S. Braibant, Klaus Hamacher, A. Petrolini, Kerem Cankocak, P. Weilhammer, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, J-C. Marin, E. I. Rosenberg, V. Vrba, H. Wahlen, K. Osterberg, T. Lesiak, P. N. Bogolubov, V.A. Uvarov, Christine Kourkoumelis, E. Lieb, M. Los, E. Dahl-Jensen, R. Barate, G. E. Kalmus, J.T. Chrin, R. McKay, K. Kurvinen, H. J. Hilke, Milos Lokajicek, Javier Sánchez, Ivan Mikulec, A. Passeri, H. Herr, A. Chan, W.S.C. Williams, L. G. Tkatchev, R. Gokieli, H. Briand, M. Reale, Daniel Treille, M. Bigi, A. Seitz, A. Firestone, A. Buys, Demetrios Loukas, L. Di Ciaccio, Jan Krolikowski, Cristian Stanescu, P. Branchini, W. Ruckstuhl, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, J. H. Koehne, Guido Barbiellini, J. Guy, M. van der Heijden, Robin Campion, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, R. McNulty, P. Vaz, H. Schneider, G. Smadja, H. Rahmani, D. Fassouliotis, Ariella Cattai, F. Ledroit, Jacques Lemonne, Tim Adye, J. N. Jackson, J. Rames, P. Kokkinias, Antonio Ferrer, P. Herquet, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, M. Karlsson, R. Sekulin, Rupert Leitner, G. Piana, G. Matthiae, R. Contri, M. Davenport, A. Maltezos, F. Verbeure, C. Bricman, J. A. Hernando, J. Chauveau, I. A. Tyapkin, J. Ridky, N. N. Khovanski, J. A. Valls Ferrer, J. P. Laugier, V. Chorowicz, Gary John Barker, K. Woschnagg, J. Van Eldik, P. Jalocha, Nikita Smirnov, O. Ullaland, Leif J. Jönsson, T. S. Hill, M. Vollmer, Paolo Giacomelli, G. Valenti, H. P. Borner, C. Gaspar, Stefan Schael, S. Francon, F. Pierre, Vincent Hedberg, M. Zito, P. Beltran, J. J. Hernandez, L. Tortora, F. J. Harris, T. Moa, G. D. Alekseev, E. Torassa, S. J. Alvsvaag, E. Agasi, L. Brillaut, T. A. Filippas, Carlos Lacasta, M. Regler, F. Carena, M. Szczekowski, F. Stichelbaut, M. Jonker, E. C. Katsoufis, G. Gopal, Pierre Juillot, B. Koene, A. Daum, Natale Demaria, A. Andreazza, Andrei Nomerotski, M. Battaglia, Allan Hallgren, Borge Svane Nielsen, J. J. Lozano, G. Borisov, W. Neumann, A. Koch-Mehrin, R. Ehret, Manolis Dris, B. Nijjhar, S. De Brabandere, Krzysztof Doroba, Tord Ekelof, H. Staeck, P. Niss, O.M. Kouznetsov, Chiara Meroni, Jan Buytaert, M. Baubillier, Achille Stocchi, G. Ekspong, George Kalkanis, William Trischuk, P. B. Renton, U. Haedinger, V. Canale, H. Palka, G. Skjevling, E. Daubie, C. Defoix, Y. Dufour, F. Fulda-Quenzer, P. D. Dauncey, Sandor Czellar, A. Markou, Mogens Dam, A. Maio, V. Lepeltier, D. Benedic, Peter Kluit, Alberto Benvenuti, M. Mc Cubbin, K. Hultqvist, Tiziano Rovelli, B. Loerstad, Paolo Privitera, M. Pernicka, Paolo Checchia, Ph. Gavillet, H. Mueller, I. Hietanen, M. Mazzucato, B. Franek, D. C. Fries, A. Budziak, P. N. Ratoff, J. W. Lamsa, S. Simonetti, M. Begalli, F. Barao, G. Myatt, A. M. Zaitsev, Alexander Vodopyanov, T. Spassoff, E. Graziani, J. M. Brunet, P. Delpierre, G. Polok, Stanislav Nemecek, R. Keranen, Jesus Marco, G. Lenzen, Francisco Matorras, Georgios Stavropoulos, P. Szymanski, C. Ronnqvist, A. P. Ostankov, V. Kostioukhine, M. Koratzinos, M. Berggren, H. Burmeister, Marta Calvi, Geoffrey Smith, F. Bianchi, H. Foeth, R. J. Apsimon, R. Lauhakangas, Ph. Charpentier, Paolo Morettini, J. G. Loken, Claire Bourdarios, L. Vitale, A. Algeri, D. Souza-Santos, C. O. Higgins, Luc Pape, Robert S. Brown, P. Abreu, P. Beilliere, T. L. Hessing, B. Ueberschaer, M. Voutilainen, J. Dahm, D. Edsall, E. Higon, G. Grosdidier, R. Seufert, S. Bosworth, F. Scuri, M. Sessa, J. M. Levy, M. Feindt, Mario Sannino, R. Moeller, P. Negri, Stefano Ragazzi, A. De Angelis, P. Collins, A. M. Wetherell, M. A. Lopez Aguera, M. Donszelmann, Matteo Pegoraro, E. Karvelas, L. K. Resvanis, J. Blocki, Göran Jarlskog, Juan Abel Barrio, Alessandra Romero, A. Ruiz, F. Cao, Daniel Bloch, H. De Boeck, B. Jean-Marie, M. Tyndel, Danilo Zavrtanik, L. Lanceri, Stéphane Plaszczynski, J. Garcia, R. Orava, D. J. Holthuizen, J. Cuevas Maestro, W. D. Apel, Ahmimed Ouraou, V.M. Golovatyuk, Massimo Caccia, Andre Tilquin, Vladimir Nikolaenko, N. Ershaidat, M. Wielers, M. A E Schyns, A. Tomaradze, Y. Sacquin, K. A. J. Forbes, S. D. Hodgson, V. Obraztsov, B. Bouquet, S. Squarcia, Martino Margoni, E. Fokitis, M. L. Turluer, D. Reid, B. Golob, H. Saarikko, T. Buran, Markus Elsing, Wolfgang Adam, J. Maillard, P. F. Honore, T. Todorov, I. Roncagliolo, W. Hao, O. Barring, Gianni Zumerle, E. Cortina, R. Zuberi, A. Baroncelli, Yu. Belokopytov, C. Vander Velde, Olga Botner, Krzysztof Korcyl, G. A. Chelkov, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, Carmen García, P. E. S. Nilsen, G. Sciolla, P. Poropat, Andromachi Tsirou, Andre Augustinus, A. Wehr, P. Van Dam, B. Boštjančič, V. Perevozchikov, Richard Brenner, S. Hahn, Francesca Romana Cavallo, C. De La Vaissiere, V. V. Lapin, Themistocles Bowcock, Barry King, W. J. Murray, R. Strub, E. Spiriti, R. Frühwirth, J. L. Fousset, Tiziano Camporesi, J. Timmermans, G. Cosme, P. J. Holt, N. G. Redaelli, Marco Bozzo, P. Frenkiel, J. Straver, F. Waldner, C. Walck, J. E. Augustin, S. Haider, C. Caso, H. B. Crawley, W. Da Silva, A. N. Sisakian, W. K. Van Doninck, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, S. Marti, M. Michelotto, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, C. Kreuter, V. Gracco, Pavlos Ioannou, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, J. Davies, G. Hamel de Monchenault, Josef Strauss, V. Chabaud, M. Espirito Santo, W. Venus, R. Nicolaidou, I. Kronkvist, E. K. Johansson, Steinar Stapnes, G. Maehlum, A. Lopez-Fernandez, Tuure Tuuva, Clara Troncon, C. De Clerq, P. Zalewski, K. D. Brand, J. Pennanen, N. I. Zimin, L. Bugge, A. J. Camacho Rozas, D. Z. Toet, P. Siegrist, M. J. Bates, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and UCL - SC/PHYS - Département de physique

Subjects
Quark, Particle physics, Physics and Astronomy (miscellaneous), Meson, LUND MONTE-CARLO, Electron–positron annihilation, Nuclear Theory, Jet (particle physics), 01 natural sciences, JET FRAGMENTATION, Nuclear physics, PHYSICS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], B meson, Z0, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Muon, B-MESONS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Física nuclear, Particle Physics - Experiment, Production rate, Lepton
Abstract

The study of the properties of inclusive production of Ds mesons and of events in which a φ{symbol} and a muon are present in the same jet provides two independent measurements of the probability, fs w, for a heavy quark to hadronize into a strange B or D meson. The data sample analysed corresponds to 243,000 hadronic Z0 decays. The combined value of these measurements is fs w=0.19±0.06±0.08. From the flight distance distributions of Ds and of (φ{symbol}-lepton) secondary vertices, with the lepton emitted at high transverse momentum relative to the jet axis, two values are obtained for the Bs 0 meson lifetime. Combining these measurements with a previous result based on the study of Ds-μ events, the Bs 0 meson lifetime is measured to be: 0.96±0.37 ps. © 1994 Springer-Verlag.

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46. MEASUREMENT OF THE TRIPLE-GLUON VERTEX FROM 4-JET EVENTS AT LEP

Author

G. D. Alekseev, E. Torassa, Jorge-Armando Benitez Garcia, P. Vaz, R. Lauhakangas, Ph. Charpentier, M. Mc Cubbin, A. Chan, K. Hultqvist, A. De Min, Heinz Pernegger, I. Siccama, G. Sajot, W.S.C. Williams, C. Kourkoumelis, H. Palka, G. Skjevling, J. J. Gomez Y Cadenas, R. Pain, S. Ueberschaer, O. Smirnova, H. P. Borner, Stefan Schael, A. Daum, M. Sessa, Lucio Cerrito, G. Stavropoulos, V. Chorowicz, J. P. Gerber, F. Carena, A. Maltezos, G. W. Van Apeldoorn, A. Baroncelli, J. W. Lamsa, L. Ventura, R. Lindner, P. Van Dam, M. Szczekowski, D. Vilanova, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, F. Barao, Y. Lemoigne, A. N. Sisakian, Stefano Ragazzi, P. Niss, T. S. Spassoff, Guido Barbiellini, J. Guy, I. Lippi, D. Benedic, Tim Adye, C. De La Vaissiere, J-C. Marin, T. A. Filippas, R. Gokieli, B. Nijjhar, M. Donszelmann, M. Berggren, M. Weierstall, G. Smadja, C. Gaspar, Spyros Tzamarias, O. Tchikilev, M. Mazzucato, F. Cao, M. Regler, Themistocles Bowcock, A. Tilquin, Pawel Jalocha, Barry King, H. Foeth, E.N. Tsyganov, J. H. Wickens, B. Muryn, Marco Paganoni, Jose Luis Contreras, A. Lopez-Fernandez, P. N. Bogolubov, J. E. Augustin, P. Szymanski, N. Ershaidat, A. Ferrer, V. Bocci, Martino Margoni, E. Fokitis, M. Pernicka, I. Hietanen, Danilo Zavrtanik, E. Spiriti, R. Frühwirth, R. J. Apsimon, T. L. Hessing, P. Abreu, E. Higon, R. Seufert, J. Timmermans, A. Lipniacka, E. Dahl-Jensen, Tuure Tuuva, Jesus Marco, R. Ehret, R. Strub, C. De Clerq, Itzhak Roditi, H. Mueller, V. Kostioukhine, Louis Lyons, M. Koratzinos, R. Aleksan, P. Grosse-Wiesmann, A. De Angelis, S. Bosworth, P. O. Hulth, P. Collins, A. G. Olshevski, Tord Ekelof, H. Staeck, M. Turala, D. Radojicic, M. Jonker, G. Lenzen, F. Scuri, J. Werner, P. Zalewski, A. G. Frodesen, Natale Demaria, R. Zukanovich Funchal, Marc Winter, C. Vander Velde, U. Gasparini, B. Koene, Juan Abel Barrio, G. A. Chelkov, B. Grossetete, O. Toker, C. Troncon, Borge Svane Nielsen, G. Meola, A. Markou, O. Podobrin, Daniel Bloch, Demetrios Loukas, J. J. Lozano, H. Wahlen, J. H. Koehne, C. Lambropoulos, Ugo Amaldi, P. Delpierre, E. Daubie, S. J. Alsvaag, L. Chaussard, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, Ahmimed Ouraou, V.M. Golovatyuk, George Kalkanis, J. M. Levy, Paolo Morettini, Andrea Perrotta, G. Sette, J. G. Loken, P. Beilliere, A. Elliot Peisert, M. Feindt, L. S. Vertogradov, M. Bonesini, V. Ruhlmann-Kleider, K. D. Brand, P. B. Renton, P. Negri, S-O. Holmgren, G. Myatt, C. J. Beeston, K. H. Becks, E. Vallazza, P. Lutz, G. Valenti, J. Pennanen, C. Caso, N. I. Zimin, M. J. Bates, Maria Roberta Monge, A. M. Wetherell, A. Zalewska, Peter Kluit, D. C. Fries, P. Poropat, E. K. Johansson, J. Dolbeau, P. Bambade, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, P.S.L. Booth, G. Sciolla, W. T. Meyer, B. Loerstad, W. Hao, O. Barring, O.M. Kouznetsov, P. Rebecchi, E. C. Katsoufis, Klaus Hamacher, K. A. J. Forbes, Göran Jarlskog, R. Sosnowski, Marta Calvi, S. D. Hodgson, B. Golob, K. Kulka, P. Vincent, F. Stichelbaut, Th. D. Papadopoulou, F. Pierre, V. G. Timofeev, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, Steinar Stapnes, Vincent Hedberg, Maciej Górski, T. Buran, L. Lanceri, Jacques Lemonne, R. Mc Kay, F. Simonetto, Kathy Huet, Valeriy Pozdniakov, T. Bolognese, Vincenzo Canale, Geoffrey Smith, J. T.M. Chrin, M. Michelotto, Guenakh Mitselmakher, G. Leder, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, A. Andreazza, R. Moeller, S. Squarcia, Charles Bricman, V. Lepeltier, A. M. Segar, Stéphane Plaszczynski, M. Davenport, A. Hakansson, S. Rossi, H. Burmeister, W. D. Apel, D. Gamba, M. Witek, L. Mathis, G. Ekspong, L. K. Resvanis, R. Holmes, H. Saarikko, T. Tabarelli, R. Sekulin, B. Dalmagne, Laurent Chevalier, Laurent Mirabito, W. Van Doninck, B. Åsman, Fernand Grard, D. Crennell, F. Mandl, F. Dupont, Andrey Korytov, Giovanni Darbo, Paolo Checchia, P. N. Ratoff, R. Keranen, E. Lieb, Massimo Caccia, P. S. Iversen, Vladimir Nikolaenko, E. Agasi, Francisco Matorras, Robert S. Brown, N. Yamdagni, D. Souza-Santos, R. Zuberi, S. Simonetti, Olga Botner, R. Mc Nulty, W. Bonivento, M. Begalli, H. Rahmani, H. B. Crawley, G. Maehlum, Milos Lokajicek, H. De Boeck, Rupert Leitner, B. Jean-Marie, F. Verbeure, A. Firestone, Ph. Gavillet, T. Moa, F. Couchot, Jan Krolikowski, N. N. Khovanski, W. Bartl, D. Fassouliotis, Ariella Cattai, J. A. Valls Ferrer, P. V. Chliapnikov, C. O. Higgins, B. Bostiancic, M. Tyndel, P. Juillot, J. J. Hernandez, A. Koch-Mehrin, G. Matthiae, Matteo Pegoraro, Carmen García, F. Ledroit, Dietrich Liko, L. Bugge, P. Privitera, Mario Sannino, J. Bjarne, Richard Brenner, A. J. Camacho Rozas, J. P. Laugier, L. Tortora, F. J. Harris, B. Tome, B. Stugu, P. Antilogus, M. Halpaap, Cristian Stanescu, D. Z. Toet, P. Siegrist, M. Karlsson, O. Ullaland, Leif J. Jönsson, Peter M. Allen, M. Pimenta, Claire Bourdarios, J. Maillard, P. Branchini, V. Vrba, M. A. Lopez Aguera, F. Hahn, Patrick Jarry, G. Rinaudo, J. Salt, Mogens Dam, L. Vitale, A. Algeri, Flavio Fontanelli, S. Francon, Andrei Nomerotski, H. Schneider, Chariclia Petridou, B. A. Khomenko, W. Da Silva, W. A. Mitaroff, N. De Groot, G. Vegni, J. E. Hooper, Carlos Lacasta, Krzysztof A. Rybicki, U. Trevisan, Francesco Navarria, C. Defoix, M. S. Bilenky, M. Vollmer, J. Zúñiga, P. H. Kramer, R. Orava, Juan Fuster, V. Perevozchikov, L.J. Carroll, N. Brummer, M. Fernandez Alonso, V. Obraztsov, Pierre Billoir, B. Bouquet, H. Briand, Daniel Treille, M. Voutilainen, Paolo Giacomelli, M. van der Heijden, P. David, D. Edsall, G. Grosdidier, B. Franek, F. Richard, T. Maron, M. Crozon, Alessandra Romero, A. Maio, A. Ruiz, J. Kesteman, P. Weilhammer, F. Fulda-Quenzer, D. Johnson, E. Graziani, J. M. Brunet, E. I. Rosenberg, Robin Campion, J. Drees, Francesca Romana Cavallo, C. Matteuzzi, M. Hahn, J. Ridky, P. Yepes, P. Herquet, R. Contri, G. Hamel de Monchenault, M. Zito, M. A E Schyns, T. Lesiak, Mitchell Wayne, Evangelos Gazis, P. F. Honore, M. Chapkin, A. Grant, I. Roncagliolo, S. Almehed, K. Kurvinen, Javier Sánchez, Ivan Mikulec, Hans Dijkstra, J. Lindgren, Nikita Smirnov, William Trischuk, V. V. Lapin, S. Marti, Josef Strauss, Manolis Dris, S. Braibant, V. Chabaud, W. Venus, Gary John Barker, W. J. Murray, Tiziano Rovelli, K. Woschnagg, M. Dracos, P. Roudeau, Alberto Benvenuti, Allan Hallgren, V.A. Uvarov, U. Haedinger, J. Chauveau, R. Nicolaidou, G. Gopal, J. N. Jackson, I. A. Tyapkin, I. Kronkvist, U. Kruener-Marquis, Tiziano Camporesi, P. Kokkinias, G. Cosme, Paolo Ronchese, J. P. Engel, N. G. Redaelli, M. V. Castillo Gimenez, D. Bertrand, N. J. Kjaer, Marco Bozzo, C. Ronnqvist, Luis Peralta, F. Kapusta, G. Damgaard, E. Cortina, W. Ruckstuhl, P. Frenkiel, P. Ioannou, J. Straver, G. Zhang, A. P. Ostankov, O. Pingot, F. Waldner, P. Beltran, V. Gracco, A. Pullia, C. Walck, J. L. Fousset, G. Tristram, Paula Eerola, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, J. Davies, M. Richardson, R. Barate, G. E. Kalmus, D. J. Holthuizen, H. Furstenau, G. Borisov, M. Baubillier, Achille Stocchi, Luc Pape, Eugene P. Gross, K. Furnival, Y. Sacquin, T. Hofmokl, A. Petrolini, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, A. M. Zaitsev, Alexander Vodopyanov, E. Rosso, H. Klein, K. Osterberg, F. Bianchi, Wolfgang Adam, H. Herr, L. G. Tkatchev, A. Seitz, M. Los, Yu. Belokopytov, E. Karvelas, J. Cuevas Maestro, T. Todorov, M. L. Turluer, D. Reid, Gianni Zumerle, Andromachi Tsirou, Andre Augustinus, A. Wehr, M. Battaglia, Y. Dufour, P. D. Dauncey, Sandor Czellar, G. Polok, M. Verlato, G. Wormser, W. Krupinski, H. J. Hilke, S. Haider, G. E. Theodosiou, S. C. Blyth, G. Wilkinson, M.D.M. De Fez Laso, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, A. Passeri, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Quark, Particle physics, COLLISIONS, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, NON-ABELIAN NATURE, E+E-ANNIHILATION, JET FRAGMENTATION, QCD PREDICTIONS, HADRONIC DECAYS, 3-GLUON VERTEX, FINAL-STATES, PHYSICS, Electron–positron annihilation, High Energy Physics::Lattice, Elementary particle, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Quantum field theory, 010306 general physics, Engineering (miscellaneous), Physics, Coupling strength, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Bremsstrahlung, Vertex (geometry), Gluon, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

From the combined data of 1990 and 1991 of the DELPHI experiment at LEP, 13057 4-jet events are obtained and used for determining the contribution of the triple-gluon vertex. The relevant variables are the generalized Nachtmann Reiter angle θNR* and the opening angle of the two least energetic jets. A fit to their two-dimensional distribution yields {Mathematical expression} where CA/CF is the ratio of the coupling strength of the triple-gluon vertex to that of gluon bremsstrahlung from quarks, and NC/NA, the ratio of the number of quark colours to the number of gluons. This constitutes a convincing model-independent proof of the existence of the triple-gluon vertex, since its contribution is directly proportional to CA/CF. The results are in agreement with the values expected from QCD:CA/CF=2.25, and NC/NA=3/8. © 1993 Springer-Verlag.

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47. Study of orientation of three-jet events in Z0 hadronic decays using the DELPHI detector

Author

L. Bugge, D. Bertrand, W. K. van Doninck, R. Sosnowski, F. Naraghi, A. J. Camacho Rozas, D. Z. Toet, A. G. Olshevski, F. Cao, T. Adami, Tord Ekelof, H. Staeck, W. Bonivento, W. Ruckstuhl, V. G. Timofeev, J. Bibby, P. Beltran, M. Sessa, Paul Baillon, William Trischuk, A. Passeri, M. Kopf, A. Stocchi, Maria Roberta Monge, A. Zalewska, M. L. Turluer, D. Reid, R. Zitoun, Jon Christopher Wikne, C. Defoix, B. Loerstad, P. Siegrist, R. Lauhakangas, J. Kesteman, B. Franek, S. D. Hodgson, T. Buran, W. Dulinski, J. H. Wickens, Gianni Zumerle, Olga Botner, F. Fulda-Quenzer, Krzysztof Korcyl, E. Graziani, J. M. Brunet, Carmen García, M. Bonatav, H. Burmeister, Laurent Chevalier, M. Donszelmann, A. Pinsent, R. Gokieli, D. J. Holthuizen, Maria Elena Pol, S. Katsanevas, G. Vegni, N. Brummer, J. C. Marin, Andromachi Tsirou, Andre Augustinus, G. D. Alekseev, Giovanni Crosetti, Dietrich Liko, P. Privitera, Milos Lokajicek, P. Gavillet, M. Schaeffer, K. Furnival, J. Pyyhtia, E. I. Rosenberg, Piotr Zalewski, M. Mc Cubbin, L. Tortora, F. J. Harris, J. E. Hooper, Robert S. Brown, A. G. Frodesen, Andre Tilquin, M. Turala, S. O. Holmgren, L. S. Vertogradov, K. Hultqvist, Georgios Stavropoulos, M. Bozzo, V.A. Uvarov, Torsten Paul Ake Åkesson, Carlos Lacasta, Krzysztof A. Rybicki, D. Wormald, T. A. Filippas, M. Regler, H. Foeth, Itzhak Roditi, P. Poropat, Klaus Hamacher, S. Schael, S. Tzamarias, Z. Hajduk, R. J. Apsimon, B. Ueberschaer, J. N. Jackson, D. Vilanova, H. Palka, G. Skjevling, F. Barao, E. Higon, R. Seufert, F. Scuri, A. M. Wetherell, L. Lanceri, Daniel Treille, J. Ridky, A. Hakansson, A. De Angelis, P. Collins, D. Delikaris, P. Kokkinias, M. J. Bates, M. Bonesini, Toralf Bernhard Skaali, D. Gamba, G. Voulgaris, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, S.F. Biagi, Wolfgang Adam, P. V. Chliapnikov, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, M. Szczekowski, Borge Svane Nielsen, J. J. Lozano, M. H. Gros, S. J. Alvsvaag, N. van Eijndhoven, E. K. Johansson, Matteo Pegoraro, Pierre Billoir, A. M. Segar, P. S. Iversen, C. De Clercq, F. Kapusta, Mogens Dam, M. Pernicka, Yu. Belokopytov, I. Hietanen, M. Bonapart, M. Davenport, F. Fontanelli, C. Bosio, Jesus Marco, G. Lenzen, J. E. Campagne, Krzysztof Doroba, Chiara Meroni, M. Koratzinos, P. Borgeaud, U. Kruener-Marquis, R. Dzhelyadin, Alastair Grant, W.H. Range, P. Abreu, U. Nau-Korzen, J. J. Hernandez, P. O. Hulth, J. P. Gerber, K. W. Glitza, Paolo Ronchese, M. Chapkin, Jose M. Benlloch, Louis Lyons, N. J. Kjaer, Manolis Dris, G. Hamel de Monchenault, Josef Strauss, M. Voutilainen, P. Roudeau, P. Delpierre, D. Benedic, Peter Kluit, M. Crozon, G. A. Chelkov, Andrea Perrotta, G. Sette, Vaclav Vrba, Natale Demaria, S. Braibant, R. Sekulin, Hans Dijkstra, M. Richardson, P. Herquet, M. S. Bilenky, A. Campion, S. Volponi, E. Lillethun, J. Lemonne, G. Tristram, Paula Eerola, G. Grosdidier, G. Galeazzi, P. F. Honore, W. Venus, J. Velasco, T. Moa, B. Nijjhar, F. Verbeure, Demetrios Loukas, A. N. Sissakian, G. Maehlum, H. B. Crawley, M. Baubillier, Claudia J. Stubenrauch, W.S.C. Williams, I. Herbst, V. Gracco, Lucio Cerrito, F. Ledroit, V. Chorowicz, G. Rinaudo, A. M. Zaitsev, Alexander Vodopyanov, S. Ueberschaer, F. Bianchi, Kjell Fransson, M. Pimenta, B. A. Khomenko, N. De Groot, F. Alted, A. Elliot Peisert, Eleuterio Spiriti, R. Mc Nulty, M. Tyndel, Martino Margoni, E. Fokitis, D. Isenhower, F. Stichelbaut, D. Y. Bardin, Fares Djama, O. Ullaland, Maciej Górski, M. Matveev, J. Maillard, L.J. Carroll, W. Kucewicz, R. Zukanovich Funchal, G. E. Kalmus, A. Firestone, C. Bricman, J.M. Gago, Francesco Navarria, J. Zúñiga, A. Markou, N. Crosland, S. Squarcia, R. Holmes, Jamal Eddine Derkaoui, H. Saarikko, T. Tabarelli, V. Perevozchikov, H. Herr, Theodora Papadopoulou, Tiziano Camporesi, M. Vollmer, H. Wahlen, Jorge-Armando Benitez Garcia, U. Rossi, Ariel Goobar, Paolo Giacomelli, Ugo Gasparini, G. Kliutchnikov, S. Delorme, M. Mazzucato, G. Cosme, P. Weilhammer, M. Zito, E. Lieb, J. Cuevas Maestro, J. H. Koehne, W. T. Meyer, B. Grossetete, Allan Hallgren, G. Wormser, Antonio Baroncelli, Ariella Cattai, Tiziano Rovelli, Tim Adye, A. Demin, K. H. Becks, G. Valenti, M. Michelotto, D. Fassouliotis, E. Vallazza, G. Kantardjian, S. Tavernier, P. Frenkiel, Edoardo Castelli, F. Pierre, F. Grard, Juan Fuster, M. T. Trainor, A. Ferrer, Pieter David, Patrick Jarry, J. E. Augustin, Leif J. Jönsson, G. Ekspong, P. Negri, C. Walck, J. Salt, R. Contri, Giovanni Darbo, P. N. Ratoff, M. Jonker, W. Krupinski, D. R. Johnson, G. Matthiae, P. Szymanski, S. Simonetti, N. Redaelli, M. Begalli, Göran Jarlskog, F. Waldner, S. Haider, U. Trevisan, R. Mc Kay, C. Ronnqvist, Jelena Krstic, B. Korzen, S. Marti, A. Letessier-Selvon, M. Fernandez Alonso, A. P. Ostankov, G. P. Gopal, V. Lepeltier, B.D. Hyams, V. Obraztsov, J. W. Lamsa, J. A. M. A. Buytaert, A. Romero, K. Kurvinen, Paolo Checchia, A. Lopez-Fernandez, C. Caso, W. D. Apel, F. Adami, T. Todorov, I. Roncagliolo, Julien Guy, Guenakh Mitselmakher, E. Dahl-Jensen, G. E. Theodosiou, Jürgen H. Werner, O. Pingot, L. Mathis, Tuure Tuuva, G. Wilkinson, M.D.M. De Fez Laso, Clara Troncon, R. Keranen, Luc Pape, Anna Lipniacka, C. Lambropoulos, Ugo Amaldi, E. Zevgolatakos, Philippe Charpentier, Francisco Matorras, N. Yamdagni, L. Vibert, Cristian Stanescu, P. Branchini, T. Kreuzberger, M. Battaglia, H. Schneider, H. Forsbach, I. Lippi, Alexander Lincoln Read, M. Szeptycka, K. Belous, H. J. Hilke, Joao Varela, E.N. Tsyganov, T. Bolognese, J. J. Gomez Y Cadenas, Jose Luis Contreras, W. De Boer, Sandor Czellar, K. D. Brand, G. Polok, N. I. Zimin, S. Ragazzi, A. Maltezos, L. Vitale, D. Radojicic, P. Yepes, P. Lutz, Paul Allen, F. Simonetto, A. Klovning, H. De Boeck, U. Mjoernmark, G. Leder, B. Åsman, E. Daubie, R. Moeller, K. Woschnagg, F. Couchot, M. A. Winter, Roberto Cirio, R. Lucock, J. Bjarne, L. K. Resvanis, D. Crennell, F. Mandl, G. Smadja, Javier Sánchez, P. Antilogus, H. Mueller, Andrey Korytov, Massimo Caccia, D. Husson, B. De Lotto, Evgueni Vlasov, E. C. Katsoufis, B. W. Heck, I. A. Tyapkin, T. S. Spassoff, G. Barbiellini, R. A. Brenner, G. Myatt, W. Klempt, Vladimir Nikolaenko, V. Falaleev, Jan Krolikowski, N. N. Khovanski, W. Bartl, J. A. Valls Ferrer, J. P. Laugier, E. J. Sanchez, J. Drees, Evangelos Gazis, L. G. Tkatchev, C. Vander Velde, E. Menichetti, M. Los, A. Pullia, M. De Beer, M. Berggren, Y. Sacquin, W. A. Mitaroff, H. Furstenau, C.J. Beeston, G. W. Van Apeldoorn, Abdenour Lounis, Marcos Dracos, R. Llosa, Pierre Astier, F. Richard, T. Hofmokl, L. Ventura, E. Rosso, H. Klein, M. Hahn, S. Almehed, F. Hahn, C. Matteuzzi, P. D. Dauncey, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, Hans Muller, G. Damgaard, Pavlos Ioannou, P. N. Bogolubov, Christine Kourkoumelis, S. Dagoret, P. Van Dam, Renato Turchetta, C. De La Vaissiere, Klaus Moenig, G. Zhang, M. A. Houlden, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, S. L. Blyth, P. Morettini, Pierre Juillot, B. Koene, V. Ruiz, George Kalkanis, P. B. Renton, J. G. Loken, P. Beilliere, D. C. Fries, Stavros Maltezos, R. Pain, O. Barring, Marta Calvi, Vincenzo Canale, Geoffrey Smith, Mario Sannino, Francesca Romana Cavallo, Mitchell Wayne, M. A. Lopez Aguera, B. Bouquet, V. V. Lapin, W. J. Murray, R. Strub, B. Jean-Marie, R. Orava, P. Vaz, B. D'Almagne, H. P. Borner, J. Lindgren, J. Dolbeau, P. Folegati, P. Bambade, P.S.L. Booth, M. P. Clara, V. Ruhlmann, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Abreu, P., Adam, W., Canale, Vincenzo, 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), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Plane (geometry), Electron–positron annihilation, High Energy Physics::Phenomenology, Scalar (mathematics), Hadron, Thrust, Jet (particle physics), 01 natural sciences, Gluon, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

The study of the orientation of three-jet events from e + e − → Z 0 → multi-hadrons is presented, in particular the polar angle distributions of the thrust axis and of the normal to the three-jet plane, and the azimuthal correlations between the hadron plane and the one defined by the beam and thrust axes. The data are compared with results at lower energy and with QCD predictions. Good agreement with QCD predictions is observed. The scalar gluon theory is excluded by the data.

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