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1. An automated testing system for the RD51 VMM hybrid and yield measurement of the first production batches

Author: Finn Jaekel, Klaus Desch, Jochen Kaminski, Michael Lupberger, Lucian Scharenberg, and Patrick Schwaebig
Subjects: Nuclear and High Energy Physics, High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Nuclear Physics - Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Detectors and Experimental Techniques, Instrumentation, Nuclear Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: We present the development of an automated testing system for the VMM hybrid of the RD51 collaboration. The VMM hybrid is a new front-end board for the RD51 common readout system, the Scalable Readout System, and will become the workhorse for the next decade to read out Micro-Pattern Gaseous Detectors. It uses the VMM chip developed for the ATLAS New Small Wheel to convert charge signals from detectors to digital data. Our testing system automatically characterises the quality of the VMM chips on the hybrid after production during multiple tests. Results are evaluated to classify the chips and hybrids and uploaded to a database. We evaluated those results for the first two production batches to measure the production yield. The yield is better than the threshold below which chip testing on a wafer level offers financial benefits. Observations on prominent chip failures were propagated back to the hybrid production process to further increase the yield for future productions. We present the development of an automated testing system for the VMM hybrid of the RD51 collaboration. The VMM hybrid is a new front-end board for the RD51 common readout system, the Scalable Readout System, and will become the workhorse for the next decade to read out Micro-Pattern Gaseous Detectors. It uses the VMM chip developed for the ATLAS New Small Wheel to convert charge signals from detectors to digital data. Our testing system automatically characterises the quality of the VMM chips on the hybrid after production during multiple tests. Results are evaluated to classify the chips and hybrids and uploaded to a database. We evaluated those results for the first two production batches to measure the production yield. The yield is better than the threshold below which chip testing on a wafer level offers financial benefits. Observations on prominent chip failures were propagated back to the hybrid production process to further increase the yield for future productions.
Published: 2022
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2. Development of a GridPix X-ray polarimeter

Author: Markus Gruber, Klaus Desch, Jochen Kaminski, and Leonie Richarz
Subjects: History, Computer Science Applications, Education
Abstract: In gaseous detectors it is possible to determine the polarization of an X-ray beam by tracking photoelectrons which are created in photoelectric interactions of the photons with the gas molecules. Based on the differential cross section of this interaction the emission angle of the photoelectrons is correlated with the polarization plane of the beam. Depending on the photon energy and on scattering of the photoelectrons on gas molecules the length of the relevant part of the track is only in the order of a few hundred microns. Thus, a high tracking resolution is needed. This is achieved with the GridPix [1] - a combination of the highly granular Timepix pixel ASIC [2] and a photolithographically postprocessed MicroMegas called InGrid which holes are aligned with the pixels of the ASIC. Such a detector was operated in a testbeam at the P09 beamline [3] of PETRA III with a 99% linear polarized beam and a modulation factor of 77% was measured. Furthermore, tests of different gas pressures and different beam energies were performed.
Published: 2022

3. How alive is constrained SUSY really?

Author: Tim Stefaniak, Bjorn Sarrazin, Herbert K. Dreiner, Peter Wienemann, Mathias Uhlenbrock, Ben O'Leary, Philip Bechtle, Klaus Desch, Matthias Hamer, Michael Kramer, and Werner Porod
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Physics beyond the Standard Model, High Energy Physics::Phenomenology, FOS: Physical sciences, Supersymmetry, 01 natural sciences, Supersymmetry breaking, Bayesian statistics, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Frequentist inference, supersymmetry phenomenology, 0103 physical sciences, Higgs boson, LHC, 010306 general physics, Minimal Supersymmetric Standard Model
Abstract: Constrained supersymmetric models like the CMSSM might look less attractive nowadays because of fine tuning arguments. They also might look less probable in terms of Bayesian statistics. The question how well the model under study describes the data, however, is answered by frequentist p-values. Thus, for the first time, we calculate a p-value for a supersymmetric model by performing dedicated global toy fits. We combine constraints from low-energy and astrophysical observables, Higgs boson mass and rate measurements as well as the non-observation of new physics in searches for supersymmetry at the LHC. Using the framework Fittino, we perform global fits of the CMSSM to the toy data and find that this model is excluded at more than 95% confidence level., 6 pages, 7 figures; To appear in the Proceedings of the 37th International Conference on High Energy Physics (ICHEP 2014), 2-9 July 2014, Valencia, Spain
Published: 2016

4. Search for invisibly decaying Higgs bosons in e+e−→Z0h0 production at s=183–209 GeV

Author: A. J. Martin, M. Ford, M. Boutemeur, F. S. Merritt, D. E. Plane, P. Scharff-Hansen, J. von Krogh, W. Mader, R. J. Hawkings, A. Harel, Ikuo Ueda, D. M. Strom, J. Lu, Ehud Duchovni, A. M. Smith, J. A. McKenna, Kiyotomo Kawagoe, Daniel Lellouch, Tara Shears, A. Michelini, J. Dubbert, Robert Vertesi, R. K. Carnegie, J. A. Wilson, Takehiko Mori, M. Schumacher, Gideon Bella, Andris Skuja, Robert McPherson, T. Kobayashi, M. Przybycień, A. Ludwig, A. D. Schaile, Gabriella Pasztor, D. Axen, A. A. Carter, Richard Teuscher, Oana Elena Vickey Boeriu, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, P. J. Bell, H. J. Burckhart, R. M. Brown, T. R. Junk, Tetsuro Mashimo, M. F. Turner-Watson, P. Vannerem, Fabrizio Fabbri, A. Frey, E. A. De Wolf, F. Spano, P. S. Wells, Lorne Levinson, Peter Sherwood, Terry Richard Wyatt, A. T. Watson, J. Lillich, Matthias Schröder, B. W. Kennedy, C. P. Ward, G. W. Wilson, I. R. Bailey, P. Jovanovic, Christoph Geich-Gimbel, J. Ludwig, M. Hauschild, M. Hamann, N. Meyer, Klaus Rabbertz, L. Zivkovic, K. Runge, P. Bock, Peter Krieger, J. M. Roney, S. Söldner-Rembold, S. W. O'Neale, W. Menges, Otmar Biebel, M. Kupper, H. Nanjo, R. J. Sobie, Stephen Lloyd, Joost Vossebeld, Oliver Pooth, Klaus Desch, T. Schörner-Sadenius, Koichi Nagai, C. F. Vollmer, Attila Krasznahorkay, E. Torrence, A. Gupta, Yoram Rozen, W. Mohr, H. Mes, I. P. Duerdoth, Shlomo Dado, Jochen Schieck, K. J. Anderson, Thorsten Wengler, T. Behnke, D. J. Miller, G. Mikenberg, Norbert Wermes, Junichi Kanzaki, James Pinfold, A. Quadt, R. Seuster, M. A. Thomson, Marco Cuffiani, Gideon Alexander, Paolo Capiluppi, T. Kawamoto, E. K. U. Gross, R. J. Batley, Dave Charlton, H. Voss, R. J. Barlow, S. Orito, H. Landsman, C. Y. Chang, Teresa Barillari, Satoru Yamashita, Gabriele Benelli, P. Gagnon, A. Csilling, R. D. Heuer, M. J. Oreglia, E. L. Barberio, S. Braibant, E. Tsur, C. M. Hawkes, Zoltan Laszlo Trocsanyi, Isabel Marian Trigger, K. W. Bell, P. Mättig, Shoji Asai, Gregor Herten, J. C. Hill, Balazs Ujvari, Tobias Kramer, J. E. Pilcher, B. C. Shen, Siegfried Bethke, I. Nakamura, J. W. Gary, Raimund Ströhmer, Marek Tasevsky, Dezso Horvath, R. G. Kellogg, Beatrix Dienes, Alexander Oh, D. Lanske, Csaba Hajdu, J. Goldberg, Stefano Marcellini, Christoph Rembser, Gunter Wolf, James Letts, D. Karlen, D. Zer-Zion, F. K. Loebinger, Erez Etzion, Ivor Fleck, Stefan Kluth, Shlomit Tarem, Joleen Pater, M. Giunta, Edward K. G. Sarkisyan, D. Toya, H. A. Neal, Sachio Komamiya, M. Gruwe, T. Saeki, A. Mutter, J. Grunhaus, Gordon H. Hanson, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, Alain Bellerive, P. Igo-Kemenes, K. Ishii, H. Jeremie, G. Anagnostou, O. Schaile, T. Kuhl, Pamela Ferrari, Paolo Giacomelli, Claudia Ciocca, K. Sachs, J. R. Carter, Philip Bechtle, N. K. Watson, Achim Stahl, C. Ainsley, C. Pahl, A. M. Rossi, G. D. Lafferty, R. K. Keeler, P. M. Watkins, P. Renkel, S. Campana, Guenter Duckeck, Satoshi Mihara, Frank Fiedler, and D. R. Ward
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Elementary particle, 01 natural sciences, Standard Model, Vector boson, Nuclear physics, 0103 physical sciences, Neutralino, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Minimal Supersymmetric Standard Model, Boson
Abstract: A search is performed for Higgs bosons decaying into invisible final states, produced in association with a Z(0) boson in e(+)e(-) collisions at energies between 183 and 209 GeV. The search is based on data samples collected by the OPAL detector at LEP corresponding to an integrated luminosity of about 660 pb(-1). The analysis aims to select events containing the hadronic decay products of the Z(0) boson and large missing momentum, as expected from Higgs boson decay into a pair of stable weakly interacting neutral particles, such as the lightest neutralino in the Minimal Supersymmetric Standard Model. The same analysis is applied to a search for nearly invisible Higgs boson cascade decays into stable weakly interacting neutral particles. No excess over the expected background from Standard Model processes is observed. Limits on the production of invisibly decaying Higgs bosons produced in association with a Z(0) boson are derived. Assuming a branching ratio BR(h(0) -> invisible) = 1, a lower limit of 108.2 GeV is placed on the Higgs boson mass at the 95% confidence level. Limits on the production of nearly invisibly decaying Higgs bosons are also obtained. (C) 2009 Elsevier B.V. All rights reserved.
Published: 2010

5. Search for Dirac magnetic monopoles in e+e− collisions with the OPAL detector at LEP2

Author: M. Ford, P. Igo-Kemenes, W. Menges, Otmar Biebel, Achim Stahl, J. von Krogh, K. Ishii, H. Jeremie, Kiyotomo Kawagoe, Yoram Rozen, David J. Miller, M. Boutemeur, F. S. Merritt, S. Campana, Sachio Komamiya, R. J. Hawkings, B. C. Shen, H. Landsman, M. Gruwe, O. Schaile, Norbert Wermes, J. A. McKenna, T. Kawamoto, Oliver Pooth, D. Zer-Zion, F. K. Loebinger, Junichi Kanzaki, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, H. A. Neal, Andris Skuja, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, T. Kuhl, Siegfried Bethke, Alain Bellerive, S. W. O'Neale, Gordon H. Hanson, Gideon Bella, S. Orito, Daniel Lellouch, H. Mes, E. L. Barberio, Paolo Giacomelli, Takehiko Mori, T. Saeki, H. J. Burckhart, Christoph Geich-Gimbel, I. Nakamura, I. P. Duerdoth, Gideon Alexander, A. D. Schaile, D. Axen, J. Dubbert, Robert Vertesi, R. K. Carnegie, A. J. Martin, Paolo Capiluppi, Tetsuro Mashimo, M. F. Turner-Watson, J. W. Gary, Oana Elena Vickey Boeriu, Gabriella Pasztor, P. Vannerem, J. A. Wilson, A. Krasznahorkay, F. Spano, G. Mikenberg, Guenter Duckeck, K. J. Anderson, Peter Sherwood, Lorne Levinson, D. R. Ward, Thorsten Wengler, Raimund Ströhmer, J. Lillich, Richard Teuscher, N. Meyer, P. Mättig, Teresa Barillari, B. W. Kennedy, I. R. Bailey, Marek Tasevsky, A. Csilling, M. J. Oreglia, J. Letts, J. Ludwig, K. Runge, P. Jovanovic, R. J. Batley, M. Kupper, P. Bock, T. R. Wyatt, S. Braibant, C. P. Ward, N. K. Watson, C. Pahl, Dezso Horvath, J. Grunhaus, Gunter Wolf, Peter Krieger, D. E. Plane, Shoji Asai, W. Mader, M. Schumacher, S. Söldner-Rembold, M. Przybycień, Klaus Rabbertz, T. R. Junk, A. A. Carter, G. M. Dallavalle, D. Karlen, J. M. Roney, E. A. De Wolf, Stephen Lloyd, C. Ainsley, P. S. Wells, Tara Shears, M. Verzocchi, G. Giacomelli, A. M. Rossi, P. F. Åkesson, Giovanni Abbiendi, A. T. Watson, P. Scharff-Hansen, L. Zivkovic, Dave Charlton, P. Gagnon, A. De Roeck, M. Kobel, Gabriele Benelli, Koichi Nagai, Shlomo Dado, W. Mohr, A. Mutter, Ehud Duchovni, Robert McPherson, R. M. Brown, P. M. Watkins, Zoltan Laszlo Trocsanyi, Frans Meijers, A. Harel, Fabrizio Fabbri, A. Frey, George Lafferty, A. M. Smith, Satoshi Mihara, A. Michelini, Ikuo Ueda, D. M. Strom, E. Torrence, A. Gupta, P. Renkel, R. D. Heuer, T. Kobayashi, J. Lu, M. Cozzi, Gregor Herten, A. Ludwig, John Hill, James Pinfold, A. Quadt, R. Seuster, Claudia Ciocca, Beatrix Dienes, K. Sachs, J. R. Carter, J. Goldberg, Philip Bechtle, Frank Fiedler, M. Hamann, G. Anagnostou, Balazs Ujvari, J. E. Pilcher, Richard Keeler, Pamela Ferrari, G. W. Wilson, R. J. Sobie, M. Hauschild, C. Y. Chang, Joost Vossebeld, M. A. Thomson, E. K. U. Gross, H. Voss, Klaus Desch, Satoru Yamashita, Matthias Schröder, E. Tsur, C. M. Hawkes, Christoph Rembser, T. Behnke, Isabel Marian Trigger, K. W. Bell, Erez Etzion, T. Schörner-Sadenius, Stefan Kluth, Shlomit Tarem, Tobias Kramer, M. Giunta, P. J. Bell, M. Cuffiani, H. Nanjo, C. F. Vollmer, Jochen Schieck, R. J. Barlow, Alexander Oh, and D. Lanske
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), 010308 nuclear & particles physics, Dirac (video compression format), Electron–positron annihilation, Magnetic monopole, Tracking (particle physics), 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Ionization energy, 010306 general physics, Event generator
Abstract: This Letter describes a direct search for pair produced magnetic monopoles in e(+)e(-) collisions. The analysis is based on 62.7 pb(-1) of data collected with the OPAL detector at an average centre-of-mass energy of root S = 206.3 GeV. The monopole signal was assumed to be characterized by two back-to-back particles with an anomalously high ionization energy loss dE/dx in the tracking chambers. No evidence for production of monopoles was observed. Upper limits were obtained on the magnetic monopole pair-production cross-section (sigma) in the mass range 45 GeV/c(2) < m(M) < 102 GeV/c(2). The average limit is sigma < 0.05 pb and is essentially independent of the magnetic monopole mass. The cross-section limit is derived at the 95% confidence level and is valid for spin-1/2 magnetic monopoles. (C) 2008 Published by Elsevier B.V.
Published: 2008

6. Inclusive jet production in photon–photon collisions at see from 189 to 209 GeV

Author: George Lafferty, Erez Etzion, Satoshi Mihara, Thorsten Wengler, Stefan Kluth, Shlomit Tarem, Klaus Rabbertz, Frank Fiedler, Dave Charlton, M. Ford, Stephen Lloyd, A. Harel, J. Lillich, Kiyotomo Kawagoe, Ikuo Ueda, D. M. Strom, S. Campana, B. W. Kennedy, M. Giunta, P. Jovanovic, C. Y. Chang, J. Lu, Peter Krieger, D. R. Ward, J. von Krogh, M. Schumacher, P. J. Bell, Shlomo Dado, Ehud Duchovni, D. Zer-Zion, D. E. Plane, Christoph Geich-Gimbel, R. D. Heuer, Gabriele Benelli, F. K. Loebinger, A. Michelini, P. Scharff-Hansen, R. J. Hawkings, T. Schörner-Sadenius, E. A. De Wolf, Gideon Bella, Ivor Fleck, E. Tsur, Gunter Wolf, Joleen Pater, Sachio Komamiya, C. M. Hawkes, H. J. Burckhart, Edward K. G. Sarkisyan, D. Toya, T. Kobayashi, A. Ludwig, Isabel Marian Trigger, K. W. Bell, D. Karlen, H. A. Neal, L. Zivkovic, Pamela Ferrari, H. Nanjo, A. M. Smith, D. J. Miller, A. D. Schaile, Gabriella Pasztor, P. Igo-Kemenes, M. Przybycień, P. Vannerem, J. C. Hill, Tara Shears, Gregor Herten, Richard Teuscher, Tobias Kramer, B. C. Shen, T. R. Junk, A. A. Carter, K. Ishii, H. Jeremie, C. P. Ward, M. Gruwe, Andris Skuja, S. W. O'Neale, E. Torrence, A. Gupta, Siegfried Bethke, H. Mes, P. S. Wells, A. Csilling, S. Söldner-Rembold, Oliver Pooth, C. F. Vollmer, M. Boutemeur, F. S. Merritt, Jochen Schieck, J. M. Roney, Gideon Alexander, Tetsuro Mashimo, M. F. Turner-Watson, Balazs Ujvari, J. Goldberg, J. E. Pilcher, R. K. Keeler, N. K. Watson, Koichi Nagai, H. Landsman, T. R. Wyatt, I. P. Duerdoth, K. J. Anderson, A. T. Watson, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, I. Nakamura, J. W. Gary, W. Mohr, O. Schaile, N. Meyer, R. J. Barlow, Paolo Capiluppi, Paolo Giacomelli, M. Kupper, M. Hamann, Raimund Ströhmer, G. Mikenberg, G. W. Wilson, M. Hauschild, T. Behnke, P. Mättig, Marek Tasevsky, P. M. Watkins, T. Kuhl, E. L. Barberio, J. A. McKenna, Dezso Horvath, M. A. Thomson, J. Dubbert, Robert Vertesi, R. K. Carnegie, Robert McPherson, R. M. Brown, Lorne Levinson, Christoph Rembser, E. K. U. Gross, H. Voss, Daniel Lellouch, Marco Cuffiani, Takehiko Mori, P. Renkel, R. J. Batley, R. J. Sobie, J. A. Wilson, I. R. Bailey, R. G. Kellogg, Satoru Yamashita, James Pinfold, Joost Vossebeld, A. Quadt, R. Seuster, C. Ainsley, Fabrizio Fabbri, Klaus Desch, A. Frey, Guenter Duckeck, A. M. Rossi, A. J. Martin, Csaba Hajdu, Stefano Marcellini, Alain Bellerive, A. Krasznahorkay, W. Mader, J. Letts, C. Pahl, T. Saeki, Alexander Oh, G. Anagnostou, D. Lanske, Gordon H. Hanson, Claudia Ciocca, Achim Stahl, K. Sachs, J. R. Carter, Philip Bechtle, G. Giacomelli, A. Mutter, A. De Roeck, M. Kobel, Frans Meijers, Yoram Rozen, J. Grunhaus, Junichi Kanzaki, Teresa Barillari, B. Dienes, Shoji Asai, D. Axen, Oana Elena Vickey Boeriu, F. Spano, Peter Sherwood, J. Ludwig, K. Runge, P. Bock, P. Gagnon, Zoltan Laszlo Trocsanyi, W. Menges, Otmar Biebel, Norbert Wermes, T. Kawamoto, S. Orito, M. J. Oreglia, S. Braibant, and Matthias Schröder
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Jet (fluid), Photon, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Perturbative QCD, 01 natural sciences, Nuclear physics, Pair production, 0103 physical sciences, Strong coupling, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Event generator
Abstract: Inclusive jet production (e(+)e(-) -> e(+)e(-) + jet + X) is studied in collisions of quasi-real photons radiated by the LEP beams at e(+)e(-) centre-of-mass energies root s(ee) from 189 to 209 GeV. Jets are reconstructed using the k(perpendicular to) jet algorithm. The inclusive differential cross-section is measured as a function of the jet transverse momentum, p(T)(jet), in the range 5 < p(T)(jet) < 40 GeV for pseudo-rapidities, eta(jet), in the range - 1.5 < eta(jet) < 1.5. The results are compared to predictions of perturbative QCD in next-to-leading order in the strong coupling constant. (c) 2007 Elsevier B.V. All rights reserved.
Published: 2008

7. Model-independent determination of the top Yukawa coupling from LHC and ILC

Author: Markus Schumacher and Klaus Desch
Subjects: Physics, Particle physics, Top quark, Large Hadron Collider, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, Electron, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Positron, Higgs boson, Measurement precision, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: We show how a measurement of the process pp-->t tbar H + X at the LHC and a measurement of the Higgs boson branching ratios BR(H-->b bar) and BR(H-->W+W-) at a future linear electron positron collider can be combined to extract a model-independent measurement of the top quark Yukawa coupling. We find that for 120 GeV < m_H < 200 GeV a measurement precision of 15% including systematic uncertainties can be achieved for integrated luminosities of 300 fb-1 at the LHC and 500 fb-1 at the LC at a centre-of-mass energy of 350 GeV., A contribution to the LHC / LC Study Group document, 7 pages, 3 figures
Published: 2006

8. Measurement of $F_2^{c\bar{c}}$ and $F_2^{b\bar{b}}$ at low Q2 and x * using the H1 vertex detector at HERA

Author: Daniel Pitzl, J. Zacek, G. Leibenguth, Pavel Murin, M. Ibbotson, B. Stella, Roland Horisberger, A. Valkárová, I. Sheviakov, Stefan Schmitt, F. Cassol-Brunner, A. Makankine, Wolfram Erdmann, G. Buschhorn, D. Ozerov, R. Weber, A. Baghdasaryan, M. Jacquet, D. P. C. Sankey, P. E. Reimer, A. Rostovtsev, M. Goettlich, L. Hajduk, Wolfgang Lange, B. Olivier, Laurent Favart, B. Portheault, A. Vest, O. Behrendt, S. Vinokurova, P. Kostka, T. Anthonis, V. Jemanov, J. Gayler, M. Hildebrandt, S. Hussain, J. Turnau, I. Milcewicz-Mika, I. Tsakov, Sakar Osman, C. Veelken, D. Meer, Matthew Beckingham, T. Laštovička, E. Barrelet, E. Gabathuler, E. Wünsch, Vladimir Palichik, K. H. Hiller, G. Thompson, R. C. W. Henderson, S. Gorbounov, V. Spaskov, Jan Kretzschmar, Anna Kropivnitskaya, V. Chekelian, S. Ghazaryan, J. Kückens, A. Nikiforov, Paul Laycock, E. Malinovski, Z. Rurikova, Emmanuel Sauvan, E. A. De Wolf, Ch. Berger, Karlheinz Meier, R. Roosen, G. Grindhammer, C. Goyon, B. R. Grell, Andrej Liptaj, R. Felst, D. Utkin, J. Bähr, Theodora Papadopoulou, D. Wegener, N. Werner, Y. de Boer, H. Henschel, E. Rizvi, G. D. Patel, K. Wacker, H. Meyer, Georgios Tsipolitis, M. Fleischer, B. List, A. Aktas, D.P. Johnson, P. Van Mechelen, J.C. Bizot, C. Niebuhr, Fabian Zomer, A. Specka, C. Wissing, D. Mladenov, Matthias Ulrich Mozer, R. Marshall, N. Malden, C. Pascaud, L. Finke, Dirk L. Hoffmann, S. Egli, Dusan Bruncko, G. Franke, B. Naroska, I. Foresti, M.-O. Boenig, G. Cozzika, Thorsten Lux, L. Janauschek, S. Ginzburgskaya, Grzegorz Nowak, Stefan Valkar, A. Petrukhin, E. Lobodzinska, C. Kiesling, F. Salvaire, P. D. Thompson, Bogdan Povh, F. Sefkow, M. Urban, D. Haidt, V. Yeganov, T. Greenshaw, Y.C. Zhu, K. Daum, John A Coughlan, Y. Soloviev, W.D. Dau, J. B. Dainton, K. Krastev, T. Hreus, L. Lytkin, A. De Roeck, E. Tzamariudaki, A. J. Campbell, A. Dubak, Y. Vazdik, D. Lüke, M. Peez, Stefania Xella, Leif J. Jönsson, Benoit Roland, J. Cvach, T. Klimkovich, Cristinel Diaconu, Stephen Maxfield, J. Stiewe, J. Bracinik, N. Gogitidze, F. P. Schilling, Christoph Grab, L. Schoeffel, Nicolas Berger, J. Zimmermann, S. Levonian, A. Zhelezov, S. Baudrand, J. Ferencei, M. Martisikova, S. Sch¨atzel, V. Efremenko, S. Mikocki, S. Schmidt, T. Kluge, Guenter Eckerlin, André Schöning, L. Goerlich, Michael R. Wessels, V. Brisson, L. Lindfeld, Zhen Zhang, Ricardo Lopez-Fernandez, S. Baumgartner, Andreas Meyer, A. Usik, T. Frisson, I. Strauch, Philipp Fleischmann, E. Perez, Peter Robmann, A. D.R. Vargas Trevino, B. Vujicic, Jean-Arcady Meyer, P. Baranov, G. Laštovička-Medin, C. Schmitz, Hannes Jung, Alexander Zhokin, J. Becker, C. Vallée, A. Rimmer, A. Knutsson, Gero Flucke, M. Kapichine, M. Nozicka, F. Tomasz, G. Knies, B. Delcourt, Magnus Hansson, G. Heinzelmann, V. Dodonov, S. Mangano, F. Moreau, S. J. Aplin, S. Essenov, Ilias Panagoulias, D. Traynor, R. Plačakyte, Katerina Lipka, M. Ismail, David Milstead, P. A. Smirnov, V. Tchoulakov, Pierre Marage, Klaus Desch, A. Falkewicz, R. Eichler, Adrian Perieanu, S. Caron, J. E. Olsson, W. Bartel, F. W. Büsser, J. Zalesak, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, J. V. Morris, I. Glushkov, Gerhard Brandt, S. Backovic, V. Volchinski, I. R. Kenyon, Natasa Raicevic, H. Lueders, C. Risler, Vincent Boudry, A. W. Jung, Xavier Janssen, A. N. Morozov, M. Ellerbrock, W. Yan, D. Perez-Astudillo, M. Gregori, N. Loktionova, A. Bunyatyan, G. Herrera, Bradley Cox, D.K. Nikitin, O. Henshaw, O. Behnke, R. Wolf, B. Wessling, F. Eisele, A. Hovhannisyan, Ankita Mehta, Anton Babaev, J. G. Contreras, C. Gwilliam, A. M. Fomenko, A. Mohamed, J. Wagner, V. P. Andreev, C. Gerlich, M. P. J. Landon, A. Astvatsatourov, P. Prideaux, R. Oganezov, I. Tsurin, K. Sedlák, C. Wigmore, H-C. Schultz-Coulon, H. U. Martyn, Matthias Klein, K. Müller, V. Cerny, D.P. Brown, Judith Katzy, A. Asmone, Y.H. Fleming, David South, Karel Cerny, K. Krüger, V. Lubimov, K. Nankov, L. N. Shtarkov, A. Glazov, V. Korbel, Alexandre Lebedev, C. Werner, Paul Newman, T. Zimmermann, Claus Kleinwort, G. Weber, U. Straumann, Thomas Naumann, Erika Garutti, A. V. Fedotov, L. Bystritskaya, H. Zohrabyan, R.N. Shaw-West, N. Keller, V. Lendermann, and A.-I. Lucaci-Timoce
Subjects: Quark, Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, Vertex (curve), High Energy Physics::Experiment, Charm (quantum number), Impact parameter, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Bar (unit)
Abstract: Measurements are presented of inclusive charm and beauty cross sections in e^+p collisions at HERA for values of photon virtuality 12 \le Q^2 \le 60 GeV^2 and of the Bjorken scaling variable 0.0002 \le x \le 0.005. The fractions of events containing charm and beauty quarks are determined using a method based on the impact parameter, in the transverse plane, of tracks to the primary vertex, as measured by the H1 vertex detector. Values for the structure functions F_2^{c\bar{c}} and F_2^{b\bar{b}} are obtained. This is the first measurement of F_2^{b\bar{b}} in this kinematic range. The results are found to be compatible with the predictions of perturbative quantum chromodynamics and withprevious measurements of F_2^{c\bar{c}}.
Published: 2006

9. Search for light gravitinos in events with photons and missing transverse momentum at HERA

Author: V. Yeganov, D. Kant, P. E. Reimer, F. Moreau, G. G. Winter, Laurent Schoeffel, Dusan Bruncko, J. Wagner, Katerina Lipka, B. Naroska, J. Kroseberg, V. Lubimov, Pierre Marage, Murrough Landon, J. Böhme, T. Kluge, V. Tchoulakov, S. Gorbounov, I. R. Kenyon, Karel Cerny, H. U. Martyn, F. Zomer, A. Uraev, V. Andreev, H. Spitzer, Yves Sirois, T. Greenshaw, Erika Garutti, G. Franke, K. Nankov, L. N. Shtarkov, J. Ferencei, M. Martisikova, J. Naumann, I. Foresti, G. Cozzika, Georgios Tsipolitis, M. Fleischer, P. Van Mechelen, R. Weber, J. Marks, Claus Kleinwort, R. D. Heuer, Klaus Desch, Stefan Valkar, B. Olivier, Roland Horisberger, A. Valkárová, H.-B. Bröker, Hannes Jung, D.P. Brown, J. Haller, O. Henshaw, V. Jemanov, Paul Laycock, E. Malinovski, T. Laštovička, A. D.R. Vargas Trevino, A. Dubak, A. Rimmer, C. Wissing, Alexander Zhokin, S. Baumgartner, C. Niebuhr, J. Becker, Adrian Perieanu, C. Vallée, A. Lebedev, O. Behnke, Emmanuel Sauvan, A. Knutsson, S. Levonian, E. Barrelet, Z. Rurikova, Bogdan Povh, F. Sefkow, G. Grindhammer, J. Dingfelder, I. Sheviakov, S. Schmitt, Y. Vazdik, Daniel Pitzl, S. Egli, Y. R. Coppens, P. Baranov, D. Traynor, K. Daum, A. Asmone, K. H. Hiller, R. C. W. Henderson, N. Werner, F. Cassol-Brunner, E. A. De Wolf, Ch. Berger, C. Risler, R. Roosen, E. Perez, D. Haidt, David South, F. Tomasz, G. Knies, L. Hajduk, A. Aktas, Anton Babaev, J. G. Contreras, M. Urban, M. Jacquet, A. Mohamed, G. Weber, U. Straumann, I. Herynek, Thorsten Lux, L. Janauschek, N. Van Remortel, A. Nikiforov, V. Korbel, P.D. Thompson, M. Schneider, Stefania Xella, G. Thompson, Y. Soloviev, Leif J. Jönsson, Benoit Roland, T. Klimkovich, M. Peez, V. Volchinski, J. Zálešák, V. Spaskov, J. Kückens, K. Wacker, Peter Schleper, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, Martin Karlsson, C. Pascaud, P. Truöl, Paul Richard Newman, Guenter Eckerlin, A. Specka, H. Meyer, R. Demirchyan, C. Gwilliam, R. Pöschl, L. Bystritskaya, Eram Rizvi, H. Henschel, F. P. Schilling, Grzegorz Nowak, I. Milcewicz-Mika, Rainer Stamen, R. Koutouev, A. Petrukhin, Xavier Janssen, R. Marshall, J.C. Bizot, Th. Naumann, H. Zohrabyan, G. Heinzelmann, R. Plačakytė, W. Yan, K. Meier, Gero Flucke, M. Kapichine, M. Nozicka, K. Rybicki, A. Vest, O. Behrendt, V. Dodonov, N. Loktionova, V. Chekelian, S. Vinokurova, Pavel Murin, H. Grässler, J. Cvach, I. Strauch, M. Ibbotson, V. Nagovizin, J-P. Meyer, Judith Katzy, A. Makankine, N. Keller, G. Buschhorn, A. Hovhannisyan, J. Scheins, R. Lemrani, B. Delcourt, E. Gabathuler, Philipp Fleischmann, Laurent Favart, Christoph Grab, C. Werner, Y.H. Fleming, V. Lendermann, V. Schröder, L. Lytkin, T. Anthonis, D. Ozerov, I. Tsurin, B. Portheault, P. Kostka, Peter Robmann, Cristinel Diaconu, V. Brisson, J. Garvey, E. E. Elsen, J. Turnau, W.D. Dau, J. B. Dainton, S. Schätzel, A. Schöning, D. Lüke, C. Duprel, P. Höting, E. Wünsch, A. M. Fomenko, B. Leißner, A. Rostovtsev, Dave Sankey, M. Beckingham, Matthias Ulrich Mozer, A. Fedotov, D. Utkin, B. Reisert, G. D. Patel, C. Gerlich, Günter Flügge, M.-O. Boenig, J. Bähr, Wolfram Erdmann, B. List, S. Backovic, Max Klein, S. Ginzburgskaya, C. Kiesling, D.P. Johnson, A. De Roeck, E. Tzamariudaki, A. J. Campbell, H. Lueders, Stephen Maxfield, N. Malden, S. Mangano, M. Ismail, David Milstead, P. A. Smirnov, Wolfgang Lange, J. Stiewe, J. V. Morris, C. Veelken, S. Schmidt, A. Bunyatyan, J. Gayler, Andrew Mehta, J. Bracinik, N. Gogitidze, Nicolas Berger, Ewelina Lobodzinska, M. Wessels, S. Ghazaryan, M. Ellerbrock, G. Herrera, Bradley Cox, R. Wolf, B. Wessling, Anna Kropivnitskaya, Alexander Paramonov, R. Felst, A. Zhelezov, K. Müller, Christian Schwanenberger, John A Coughlan, S. Caron, Magnus Hansson, D.K. Nikitin, L. Goerlich, B. Stella, K. Gabathuler, D. Wegener, V. Efremenko, B. Koblitz, S. Mikocki, J. Formánek, R. Gerhards, K. Krüger, J. Žáček, Hans-Christian Schultz-Coulon, R. Eichler, E.-E. Woehrling, F. Eisele, R. Oganezov, K. Sedlák, J. E. Olsson, W. Bartel, Malte Hildebrandt, F. W. Büsser, T. Berndt, Natasa Raicevic, Vincent Boudry, A. N. Morozov, M. Gregori, Zhen Zhang, Ricardo Lopez-Fernandez, D. Hoffmann, Andreas Meyer, D. Meer, A. Usik, G. Frising, L. Lindfeld, 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 Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), H1, 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, HERA, 01 natural sciences, Lightest Supersymmetric Particle, Supersymmetry breaking, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Selectron tube, 0103 physical sciences, Neutralino, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Gravitino, 010306 general physics
Abstract: A search for gravitinos produced in e±p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb -1 for e+p collisions and 13.5 pb-1 for e -p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on R-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95% confidence level for R-parity-violating couplings λ′ equal to 1, in some parts of the parameter space of the considered model. © 2005 Elsevier B.V. All rights reserved., 0, DESY-04-227 / hep-ex/0501030, SCOPUS: ar.j, H1 Collaboration., info:eu-repo/semantics/published
Published: 2005

10. Search for radions at LEP2

Author: S. Yamashita, P. Igo-Kemenes, A. D. Schaile, K. Ishii, H. Jeremie, Gabriella Pasztor, P. Vannerem, H. Voss, D. E. Plane, O. Schaile, T. Kuhl, G. Giacomelli, Pamela Ferrari, P. Scharff-Hansen, C. P. Ward, S. Söldner-Rembold, P. Tran, Yoram Rozen, Matthias Schröder, D. Axen, R. M. Brown, A. De Roeck, M. Kobel, Lorne Levinson, I. R. Bailey, Ehud Duchovni, Oana Elena Vickey Boeriu, F. Spano, Kiyotomo Kawagoe, A. Gupta, A. Csilling, Frans Meijers, Junichi Kanzaki, Graham Wilson, J. Ludwig, T. Schörner-Sadenius, K. Runge, D. J. Miller, P. Bock, T. Kobayashi, A. Ludwig, J. Goldberg, C. Y. Chang, John Hill, Achim Stahl, B. C. Shen, Alain Bellerive, Daniel Lellouch, Shlomo Dado, D. R. Ward, A. M. Smith, Takehiko Mori, M. Donkers, Arnulf Quadt, P. M. Watkins, Siegfried Bethke, M. Przybycień, S. Campana, G. Anagnostou, N. K. Watson, A. A. Carter, George Lafferty, T. Behnke, A. J. Martin, Christoph Rembser, Satoshi Mihara, J. W. Gary, Klaus Rabbertz, Teresa Barillari, H. Landsman, P. Renkel, Gunter Wolf, M. Verzocchi, Stephen Lloyd, Andris Skuja, P. F. Åkesson, Giovanni Abbiendi, C. Ainsley, A. M. Rossi, Raimund Ströhmer, D. Karlen, Marek Tasevsky, Frank Fiedler, B. Dienes, Dezso Horvath, M. J. Oreglia, A. Michelini, P. Mättig, E. L. Barberio, Shoji Asai, P. Gagnon, Gianni Masetti, R. J. Hemingway, S. Braibant, J. Dubbert, R. K. Carnegie, J. Allison, Tetsuro Mashimo, M. F. Turner-Watson, J. Lillich, B. W. Kennedy, Tara Shears, Zoltan Laszlo Trocsanyi, P. Jovanovic, Claudia Ciocca, J. A. Wilson, K. Sachs, L. Zivkovic, C. Pahl, Peter Krieger, Dave Charlton, Philip Bechtle, C. F. Vollmer, Erez Etzion, Jochen Schieck, N. Meyer, Guenter Duckeck, Stefan Kluth, Shlomit Tarem, Paolo Giacomelli, R. J. Barlow, A. Mutter, J. R. Carter, M. Kupper, Richard Teuscher, Gideon Alexander, Paolo Capiluppi, M. Giunta, E. Tsur, C. M. Hawkes, W. Menges, Otmar Biebel, Isabel Marian Trigger, K. W. Bell, J. von Krogh, T. R. Wyatt, R. J. Hawkings, Tobias Kramer, James Pinfold, Alexander Oh, I. Nakamura, D. Lanske, S. W. O'Neale, Sachio Komamiya, R. D. Heuer, P. O. Günther, Gideon Bella, H. J. Burckhart, T. Saeki, K. J. Anderson, Norbert Wermes, T. Kawamoto, S. Orito, J. Grunhaus, J. M. Roney, M. Schumacher, Koichi Nagai, W. Mohr, E. A. De Wolf, P. Amaral, M. A. Thomson, E. K. U. Gross, H. Mes, I. P. Duerdoth, Eric Torrence, G. Mikenberg, R. J. Batley, P. J. Bell, H. Nanjo, M. Gruwé, Richard Nisius, Marco Cuffiani, M. Ford, A. Harel, Robert McPherson, K. D. Hoffman, Ikuo Ueda, D. M. Strom, Fabrizio Fabbri, A. Frey, J. Lu, W. F. Mader, P. S. Wells, A. T. Watson, M. Hamann, Richard Keeler, R. J. Sobie, Joost Vossebeld, Klaus Desch, T. R. Junk, M. Boutemeur, F. S. Merritt, Gregor Herten, J. A. McKenna, Christoph Geich-Gimbel, J. E. Pilcher, Thorsten Wengler, Gabriele Benelli, M. Hauschild, R. Vértesi, Gordon H. Hanson, Rolf Seuster, P. Sherwood, Oliver Pooth, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, Balazs Ujvari, H. A. Neal, G.ABBIENDI, C.AINSLEY, P.F.°AKESSON, G.ALEXANDER, J.ALLISON, P.AMARAL, G.ANAGNOSTOU, K.J.ANDERSON, S.ASAI, D.AXEN, G.AZUELOS, I.BAILEY, E.BARBERIO, T.BARILLARI, R.J.BARLOW, R.J.BATLEY, P.BECHTLE, T.BEHNKE, K.W.BELL, P.J.BELL, G.BELLA, A.BELLERIVE, G.BENELLI, S.BETHKE, O.BIEBEL, O.BOERIU, P.BOCK, M.BOUTEMEUR, S.BRAIBANT, R.M.BROWN, K.BUESSER, H.J.BURCKHART, S.CAMPANA, P.CAPILUPPI, R.K.CARNEGIE, A.A.CARTER, J.R.CARTER, C.Y.CHANG, D.G.CHARLTON, C.CIOCCA, A.CSILLING, M.CUFFIANI, S.DADO, A.DE ROECK, E.A.DE WOLF, K.DESCH, B.DIENES, M.DONKERS, J.DUBBERT, E.DUCHOVNI, G.DUCKECK, I.P.DUERDOTH, E.ETZION, F.FABBRI, L.FELD, P.FERRARI, F.FIEDLER, I.FLECK, M.FORD, A.FREY, P.GAGNON, J.W.GARY, G.GAYCKEN, C.GEICH-GIMBEL, G.GIACOMELLI, P.GIACOMELLI, M.GIUNTA, J.GOLDBERG, E.GROSS, J.GRUNHAUS, M.GRUW´E, P.O.G¨UNTHER, A.GUPTA, C.HAJDU, M.HAMANN, G.G.HANSON, A.HAREL, M.HAUSCHILD, C.M.HAWKES, R.HAWKINGS, R.J.HEMINGWAY, G.HERTEN, R.D.HEUER, J.C.HILL, K.HOFFMAN, D.HORV´ATH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T.R. JUNK, N.KANAYA, J.KANZAKI, D.KARLEN, K.KAWAGOE, T.KAWAMOTO, R.K.KEELER, R.G.KELLOGG, B.W.KENNEDY, S.KLUTH, T.KOBAYASHI, M.KOBEL, S.KOMAMIYA, T.KR¨AMER, P.KRIEGER, J. VON KROGH, K.KRUGER, T.KUHL, M.KUPPER, G.D. LAFFERTY, H. LANDSMAN, D. LANSKE, J.G. LAYTER, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S.L. LLOYD, F.K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W.MADER, S.MARCELLINI, A.J.MARTIN, G.MASETTI, T.MASHIMO, P.M¨ATTIGM, J.MCKENNA, R.A.MCPHERSON, F.MEIJERS, W.MENGES, F.S.MERRITT, H.MES, N.MEYER, A.MICHELINI, S.MIHARA, G.MIKENBERG, D.J.MILLER, S.MOED, W.MOHR, T.MORI, A.MUTTER, K.NAGAI, I.NAKAMURA, H.NANJO, H.A.NEAL, R.NISIUS, S.W.O’NEALE, A.OH, M.J.OREGLIA, S.ORITO, C.PAHL, G.P´ASZTOR, J.R.PATER, J.E.PILCHER, J.PINFOLD, D.E.PLANE, O.POOTH, M.PRZYBYCIE´N, A.QUADT, K.RABBERTZ, C.REMBSER, P.RENKEL, J.M.RONEY, A.M.ROSSI, Y.ROZEN, K.RUNGE, K. SACHS, T. SAEKI, E.K.G. SARKISYAN, A.D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCH¨ORNER-SADENIUS, M. SCHR¨ODER, M. SCHUMACHER, W.G. SCOTT, R. SEUSTER, T.G. SHEARS, B.C. SHEN, P. SHERWOOD, A. SKUJA, A.M. SMITH, R. SOBIE, S. S¨OLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STR¨OHMER, S.TAREM, M.TASEVSKY, R.TEUSCHER, M.A.THOMSON, E.TORRENCE, D.TOYA, P.TRAN, I.TRIGGER, Z.TR´OCS´ANYI, E.TSUR, M.F.TURNER-WATSON, I.UEDA, B.UJV´ARI, C.F.VOLLMER, P.VANNEREM, R.V´ERTESI, M.VERZOCCHI, H.VOSS, J.VOSSEBELD, C.P.WARD, D.R.WARD, P.M.WATKINS, A.T.WATSON, N.K.WATSON, P.S.WELLS, T.WENGLER, N.WERMES, G.W.WILSON, J.A.WILSON, G.WOLF, T.R.WYATT, S.YAMASHITA, D. ZER-ZION, L. ZIVKOVIC, and OPAL Collaboration
Subjects: Particle physics, Nuclear and High Energy Physics, High Energy Physics::Lattice, FOS: Physical sciences, Elementary particle, 01 natural sciences, 7. Clean energy, Standard Model, High Energy Physics - Experiment, symbols.namesake, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Boson, Physics, Condensed Matter::Quantum Gases, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hierarchy problem, Scalar boson, Higgs field, Higgs boson, symbols, High Energy Physics::Experiment, Higgs mechanism, Particle Physics - Experiment
Abstract: A new scalar resonance, called the radion, with couplings to fermions and bosons similar to those of the Higgs boson, is predicted in the framework of Randall-Sundrum models, proposed solutions to the hierarchy problem with one extra dimension. An important distinction between the radion and the Higgs boson is that the radion would couple directly to gluon pairs, and in particular its decay products would include a significant fraction of gluon jets. The radion had the same quantum numbers as the Standard Model (SM) Higgs boson, and therefore they can mix, with the resulting mass eigenstates having properties different from those of the SM Higgs boson. Existing searches for the Higgs boson are sensitive to the possible production and decay of radions and Higgs bosons in these models. For the first time, searches for the SM Higgs boson and flavour-independent and decay-mode independent searches for a neutral Higgs boson are used in combination to explore the parameter space of the Randall-Sundrum model. In the dataset recorded by the OPAL experiment at LEP, no evidence for radion or Higgs particle production was observed in any of those searches. The results are used to set limits on the radion and Higgs boson masses., Comment: 18 pages, 6 figures, Submitted to Phys. Lett. B
Published: 2005
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11. Measurements of Rb in e+e− collisions at s between 182 and 209 GeV

Author: A. Csilling, P. Mättig, Shoji Asai, Daniel Lellouch, Takehiko Mori, W. F. Mader, E. Torrence, A. Gupta, Dave Charlton, O. Schaile, Yoram Rozen, Junichi Kanzaki, Paolo Giacomelli, J. Goldberg, J. M. Roney, M. Schumacher, Andris Skuja, Christoph Geich-Gimbel, R. Nisius, R. Vértesi, George Lafferty, Graham Wilson, P. S. Wells, Matthias Schröder, Tetsuro Mashimo, M. F. Turner-Watson, Satoshi Mihara, P. Gagnon, Gianni Masetti, R. D. Heuer, Koichi Nagai, A. T. Watson, Shlomo Dado, E. A. De Wolf, D. E. Plane, C. F. Vollmer, Achim Stahl, Gideon Bella, S. Yamashita, P. Igo-Kemenes, Gordon H. Hanson, Klaus Rabbertz, Stephen Lloyd, Zoltan Laszlo Trocsanyi, M. Hauschild, H. J. Burckhart, W. Mohr, N. Meyer, M. Kupper, P. Tran, F. S. Merritt, A. Harel, N. K. Watson, Alain Bellerive, M. A. Thomson, K. Ishii, R. K. Carnegie, T. Schörner-Sadenius, Ikuo Ueda, D. M. Strom, J. A. Wilson, P. Amaral, Oliver Pooth, H. Jeremie, E. K. U. Gross, J. Lu, Tara Shears, D. Axen, John Allison, S. Campana, D. J. Miller, Kiyotomo Kawagoe, M. Gruwé, Oana Elena Vickey Boeriu, F. Spano, C. Ainsley, Gabriella Pasztor, J. A. McKenna, Peter Sherwood, Gideon Alexander, T. Barillari, P. Vannerem, J. Ludwig, K. Runge, P. Bock, M. Hamann, R. J. Hemingway, James Pinfold, R. G. Kellogg, C. P. Ward, G. Anagnostou, R. Seuster, A. Michelini, H. Mes, J. Lillich, M. Boutemeur, A. D. Schaile, Marco Cuffiani, Csaba Hajdu, S. Söldner-Rembold, Thorsten Wengler, B. W. Kennedy, Ehud Duchovni, R. K. Keeler, I. P. Duerdoth, P. Jovanovic, R. M. Brown, Lorne Levinson, Stefano Marcellini, R. J. Sobie, A. J. Martin, Peter Krieger, T. Kuhl, Christoph Rembser, James Letts, Arnulf Quadt, Joost Vossebeld, I. R. Bailey, F. Fiedler, O. Biebel, Klaus Desch, S. Bethke, P. M. Watkins, Alessandro Montanari, D. Zer-Zion, P. J. Bell, G. Mikenberg, Claudia Ciocca, Richard Teuscher, T. Behnke, F. K. Loebinger, Gabriele Benelli, K. Sachs, Philip Bechtle, M. Ford, H. Landsman, P. Renkel, Ivor Fleck, T. Kobayashi, Pamela Ferrari, A. Ludwig, R. J. Batley, Joleen Pater, Erez Etzion, D. R. Ward, P. Scharff-Hansen, S. Kluth, Edward K. G. Sarkisyan, D. Toya, T. R. Junk, Balazs Ujvari, H. A. Neal, E. L. Barberio, T. R. Wyatt, A. M. Smith, Robert McPherson, Gregor Herten, H. Nanjo, Shlomit Tarem, K. D. Hoffman, Fabrizio Fabbri, A. Frey, J. von Krogh, H. Voss, J. Dubbert, M. Giunta, G. Giacomelli, A. De Roeck, M. Kobel, R. J. Hawkings, Gunter Wolf, J. E. Pilcher, Frans Meijers, D. Karlen, G. Duckeck, M. Przybycień, A. A. Carter, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, B. C. Shen, M. Donkers, J. W. Gary, Marek Tasevsky, Dezso Horvath, W. Menges, Norbert Wermes, T. Kawamoto, S. Orito, E. Tsur, C. M. Hawkes, M. J. Oreglia, S. Braibant, Isabel Marian Trigger, K. W. Bell, L. Zivkovic, J. R. Carter, J. C. Hill, Tobias Kramer, Jochen Schieck, R. J. Barlow, R. Ströhmer, Alexander Oh, I. Nakamura, D. Lanske, J. Grunhaus, Sachio Komamiya, T. Saeki, Alessandra Fanfani, Beatrix Dienes, C. Y. Chang, A. Mutter, S. W. O'Neale, C. Pahl, P. O. Günther, and K. J. Anderson
Subjects: Nuclear physics, Physics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Charm (quantum number), 010306 general physics, 01 natural sciences, Standard Model, Lepton
Abstract: Measurements of R b , the ratio of the b b ¯ cross-section to the q q ¯ cross-section in e + e − collisions, are presented. The data were collected by the OPAL experiment at LEP at centre-of-mass energies between 182 and 209 GeV. Lepton, lifetime and event-shape information is used to tag events containing b quarks with high efficiency. The data are compatible with the Standard Model expectation. The mean ratio of the eight measurements reported here to the Standard Model prediction is 1.055 ± 0.031 ± 0.037 , where the first error is statistical and the second systematic.
Published: 2005

12. Determination of the LEP beam energy using radiative fermion-pair events

Author: Siegfried Bethke, J. W. Gary, Dezso Horvath, W. Menges, Otmar Biebel, G. W. Wilson, M. Hamann, M. Hauschild, Richard Keeler, J. Goldberg, R. J. Sobie, Joost Vossebeld, George Lafferty, Klaus Desch, Christoph Rembser, H. Landsman, W. F. Mader, Gunter Wolf, Erez Etzion, S. W. O'Neale, Stefan Kluth, Shlomit Tarem, P. O. Günther, Norbert Wermes, T. Kawamoto, M. Giunta, D. Karlen, Satoshi Mihara, P. S. Wells, P. Sherwood, Oliver Pooth, S. Orito, A. T. Watson, Alain Bellerive, E. Tsur, C. M. Hawkes, E. L. Barberio, Isabel Marian Trigger, K. W. Bell, K. J. Anderson, H. Mes, Kiyotomo Kawagoe, John Allison, A. Harel, Ikuo Ueda, D. M. Strom, J. C. Hill, J. Lu, I. P. Duerdoth, Tobias Kramer, R. J. Hemingway, Gianni Masetti, M. J. Oreglia, C. Y. Chang, Shlomo Dado, J. Lillich, Achim Stahl, S. Braibant, N. K. Watson, Sachio Komamiya, Dave Charlton, L. Zivkovic, Frank Fiedler, Thorsten Wengler, B. W. Kennedy, P. Jovanovic, J. R. Carter, D. Toya, Tara Shears, M. Przybycień, Peter Krieger, C. Ainsley, A. M. Rossi, Raimund Ströhmer, Christoph Geich-Gimbel, Giora Mikenberg, R. G. Kellogg, R. J. Batley, Gideon Alexander, J. M. Roney, A. A. Carter, Csaba Hajdu, R. D. Heuer, P. J. Bell, Stefano Marcellini, S. Yamashita, M. Schumacher, A. D. Schaile, Gabriella Pasztor, T. Saeki, James Letts, P. Vannerem, M. Verzocchi, Gideon Bella, Gabriele Benelli, P. F. Åkesson, Giovanni Abbiendi, Beatrix Dienes, Klaus Rabbertz, P. Igo-Kemenes, Stephen Lloyd, M. Tasevsky, R. Vértesi, Yoram Rozen, E. A. De Wolf, R. M. Brown, Lorne Levinson, Claudia Ciocca, T. Behnke, K. Sachs, C. P. Ward, Philip Bechtle, H. J. Burckhart, S. Söldner-Rembold, Ehud Duchovni, Alexander Oh, P. Amaral, I. R. Bailey, J. Dubbert, R. K. Carnegie, K. Ishii, H. Jeremie, A. Michelini, Arnulf Quadt, Matthias Schröder, Koichi Nagai, D. J. Miller, T. R. Junk, T. Kobayashi, K. Hoffman, A. Ludwig, Gregor Herten, W. Mohr, J. A. Wilson, Junichi Kanzaki, M. Boutemeur, F. S. Merritt, P. Gagnon, I. Nakamura, D. Lanske, D. E. Plane, P. M. Watkins, A. Mutter, Robert McPherson, D. R. Ward, Zoltan Laszlo Trocsanyi, O. Schaile, Paolo Giacomelli, Gordon H. Hanson, J. A. McKenna, T. Schörner-Sadenius, J. E. Pilcher, P. Renkel, Daniel Lellouch, T. Kuhl, P. Tran, Fabrizio Fabbri, A. Frey, Takehiko Mori, H. Nanjo, D. Zer-Zion, A. J. Martin, D. Axen, F. K. Loebinger, M. Ford, Oana Elena Vickey Boeriu, F. Spano, Ivor Fleck, P. Capiluppi, Joleen Pater, Edward K. G. Sarkisyan, J. Ludwig, K. Runge, P. Bock, M. A. Thomson, Balazs Ujvari, H. A. Neal, C. F. Vollmer, J. von Krogh, A. Gupta, Jochen Schieck, R. J. Hawkings, E. K. U. Gross, J. Grunhaus, C. Pahl, Teresa Barillari, R. J. Barlow, A. Csilling, M. Gruwé, Eric Torrence, Richard Nisius, P. Mättig, Shoji Asai, Marco Cuffiani, H. Voss, Andris Skuja, G. Giacomelli, Pamela Ferrari, A. De Roeck, M. Kobel, Tetsuro Mashimo, M. F. Turner-Watson, Frans Meijers, N. Meyer, M. Kupper, G. Anagnostou, James Pinfold, R. Seuster, P. Scharff-Hansen, Guenter Duckeck, A. M. Smith, S. Campana, Richard Teuscher, T. R. Wyatt, B. C. Shen, M. Donkers, G.ABBIENDI, C.AINSLEY, P.F.°AKESSON, G.ALEXANDER, J.ALLISON, P.AMARAL, G.ANAGNOSTOU, K.J.ANDERSON, S.ASAI, D.AXEN, G.AZUELOS, I.BAILEY, E.BARBERIO, T.BARILLARI, R.J.BARLOW, R.J.BATLEY, P.BECHTLE, T.BEHNKE, K.W.BELL, P.J.BELL, G.BELLA, A.BELLERIVE, G.BENELLI, S.BETHKE, O.BIEBEL, O.BOERIU, P.BOCK, M.BOUTEMEUR, S.BRAIBANT, R.M.BROWN, K.BUESSER, H.J.BURCKHART, S.CAMPANA, P.CAPILUPPI, R.K.CARNEGIE, A.A.CARTER, J.R.CARTER, C.Y.CHANG, D.G.CHARLTON, C.CIOCCA, A.CSILLING, M.CUFFIANI, S.DADO, A.DE ROECK, E.A.DE WOLF, K.DESCH, B.DIENES, M.DONKERS, J.DUBBERT, E.DUCHOVNI, G.DUCKECK, I.P.DUERDOTH, E.ETZION, F.FABBRI, L.FELD, P.FERRARI, F.FIEDLER, I.FLECK, M.FORD, A.FREY, P.GAGNON, J.W.GARY, G.GAYCKEN, C.GEICH-GIMBEL, G.GIACOMELLI, P.GIACOMELLI, M.GIUNTA, J.GOLDBERG, E.GROSS, J.GRUNHAUS, M.GRUW´E, P.O.G¨UNTHER, A.GUPTA, C.HAJDU, M.HAMANN, G.G.HANSON, A.HAREL, M.HAUSCHILD, C.M.HAWKES, R.HAWKINGS, R.J.HEMINGWAY, G.HERTEN, R.D.HEUER, J.C.HILL, K.HOFFMAN, D.HORV´ATH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T.R. JUNK, N.KANAYA, J.KANZAKI, D.KARLEN, K.KAWAGOE, T.KAWAMOTO, R.K.KEELER, R.G.KELLOGG, B.W.KENNEDY, S.KLUTH, T.KOBAYASHI, M.KOBEL, S.KOMAMIYA, T.KR¨AMER, P.KRIEGER, J. VON KROGH, K.KRUGER, T.KUHL, M.KUPPER, G.D. LAFFERTY, H. LANDSMAN, D. LANSKE, J.G. LAYTER, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S.L. LLOYD, F.K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W.MADER, S.MARCELLINI, A.J.MARTIN, G.MASETTI, T.MASHIMO, P.M¨ATTIGM, J.MCKENNA, R.A.MCPHERSON, F.MEIJERS, W.MENGES, F.S.MERRITT, H.MES, N.MEYER, A.MICHELINI, S.MIHARA, G.MIKENBERG, D.J.MILLER, S.MOED, W.MOHR, T.MORI, A.MUTTER, K.NAGAI, I.NAKAMURA, H.NANJO, H.A.NEAL, R.NISIUS, S.W.O’NEALE, A.OH, M.J.OREGLIA, S.ORITO, C.PAHL, G.P´ASZTOR, J.R.PATER, J.E.PILCHER, J.PINFOLD, D.E.PLANE, O.POOTH, M.PRZYBYCIE´N, A.QUADT, K.RABBERTZ, C.REMBSER, P.RENKEL, J.M.RONEY, A.M.ROSSI, Y.ROZEN, K.RUNGE, K. SACHS, T. SAEKI, E.K.G. SARKISYAN, A.D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCH¨ORNER-SADENIUS, M. SCHR¨ODER, M. SCHUMACHER, W.G. SCOTT, R. SEUSTER, T.G. SHEARS, B.C. SHEN, P. SHERWOOD, A. SKUJA, A.M. SMITH, R. SOBIE, S. S¨OLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STR¨OHMER, S.TAREM, M.TASEVSKY, R.TEUSCHER, M.A.THOMSON, E.TORRENCE, D.TOYA, P.TRAN, I.TRIGGER, Z.TR´OCS´ANYI, E.TSUR, M.F.TURNER-WATSON, I.UEDA, B.UJV´ARI, C.F.VOLLMER, P.VANNEREM, R.V´ERTESI, M.VERZOCCHI, H.VOSS, J.VOSSEBELD, C.P.WARD, D.R.WARD, P.M.WATKINS, A.T.WATSON, N.K.WATSON, P.S.WELLS, T.WENGLER, N.WERMES, G.W.WILSON, J.A.WILSON, G.WOLF, T.R.WYATT, S.YAMASHITA, D. ZER-ZION, L. ZIVKOVIC, and OPAL Collaboration
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, Fermion, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Calibration, Radiative transfer, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Beam energy
Abstract: We present a determination of the LEP beam energy using "radiative return" fermion-pair events recorded at centre-of-mass energies from 183 GeV to 209 GeV. We find no evidence of a disagreement between the OPAL data and the LEP Energy Workings Group's standard calibration. Including the energy- averaged 11 MeV uncertainty in the standard determination, the beam energy we obtain from the OPAL data is higher than that obtained from the LEP calibration by 0+-34(stat.)+-27(syst.)MeV, Comment: 24 pages, 5 figures, Submitted to Phys. Letts. B
Published: 2004
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13. Multi-photon events with large missing energy in e+e− collisions at s=192–209 GeV

Author: James Pinfold, R. Seuster, P. Scharff-Hansen, A. M. Smith, Andris Skuja, Tetsuro Mashimo, M. F. Turner-Watson, N. Meyer, M. Kupper, Daniel Lellouch, Takehiko Mori, L. Brigliadori, T. Behnke, S. W. O'Neale, P. O. Günther, J. Goldberg, M. Boutemeur, F. S. Merritt, K. J. Anderson, Thorsten Wengler, B. C. Shen, M. Donkers, Yoram Rozen, Siegfried Bethke, J. A. McKenna, Tara Shears, W. G. Scott, S. Yamashita, Junichi Kanzaki, Silvia Arcelli, J. W. Gary, P. Igo-Kemenes, K. Buesser, M. Gruwé, K. Ishii, H. Jeremie, Gideon Bella, Gianni Masetti, C. Y. Chang, R. M. Brown, Lorne Levinson, Christoph Rembser, Christoph Geich-Gimbel, Teresa Barillari, H. J. Burckhart, A. Csilling, S. Moed, Gabriele Benelli, Guenter Duckeck, D. Axen, Dezso Horvath, Erez Etzion, Richard Nisius, Graham Wilson, I. R. Bailey, O. Schaile, Oana Elena Vickey Boeriu, Raimund Ströhmer, Stefan Kluth, T. Kuhl, Shlomit Tarem, P. Mättig, Shoji Asai, Marco Cuffiani, Shlomo Dado, Richard Teuscher, A. J. Martin, F. Spano, M. J. Oreglia, M. Hauschild, M. Giunta, D. Zer-Zion, Robert McPherson, L. Zivkovic, Lutz Feld, D. Toya, P. J. Bell, G. Gaycken, W. Mader, Beatrix Dienes, F. K. Loebinger, C. Pahl, Giora Mikenberg, M. Schumacher, Matthias Schröder, Alexander Oh, J. R. Carter, W. Menges, Otmar Biebel, Paolo Giacomelli, Ivor Fleck, J. Ludwig, K. Runge, P. Bock, Georges Azuelos, T. R. Wyatt, I. Nakamura, D. Lanske, T. R. Junk, A. D. Schaile, Joleen Pater, Edward K. G. Sarkisyan, Gabriella Pasztor, K. Hoffman, E. Tsur, Gregor Herten, C. M. Hawkes, E. A. De Wolf, P. Vannerem, H. Nanjo, T. Schörner-Sadenius, Fabrizio Fabbri, A. Frey, Balazs Ujvari, H. A. Neal, Isabel Marian Trigger, K. W. Bell, A. Gupta, C. F. Vollmer, C. P. Ward, P. Gagnon, A. Harel, J. E. Pilcher, J. C. Hill, George Lafferty, Norbert Wermes, T. Kawamoto, Jochen Schieck, Ikuo Ueda, D. M. Strom, R. J. Barlow, J. Lu, Tobias Kramer, P. Amaral, Satoshi Mihara, S. Söldner-Rembold, Gunter Wolf, S. Orito, Zoltan Laszlo Trocsanyi, Kiyotomo Kawagoe, Gideon Alexander, D. Karlen, Frank Fiedler, B. Poli, R. K. Keeler, Dave Charlton, P. S. Wells, Arnulf Quadt, H. Mes, P. M. Watkins, A. T. Watson, Klaus Rabbertz, I. P. Duerdoth, S. Braibant, P. Renkel, Stephen Lloyd, P. Sherwood, Achim Stahl, Oliver Pooth, Ehud Duchovni, John Allison, D. E. Plane, N. Kanaya, A. Michelini, R. G. Kellogg, M. Hamann, R. D. Heuer, Csaba Hajdu, T. Kobayashi, A. Ludwig, Stefano Marcellini, Claudia Ciocca, James Letts, R. Vértesi, R. J. Sobie, Joost Vossebeld, Klaus Desch, P. Tran, K. Sachs, Philip Bechtle, Gordon H. Hanson, D. R. Ward, M. Ford, N. K. Watson, R. J. Batley, S. Campana, C. Ainsley, J. von Krogh, R. J. Hawkings, J. Dubbert, R. K. Carnegie, J. A. Wilson, M. A. Thomson, E. K. U. Gross, Eric Torrence, D. J. Miller, R. J. Hemingway, J. Lillich, B. W. Kennedy, P. Jovanovic, Peter Krieger, M. Przybycień, H. Landsman, A. A. Carter, E. L. Barberio, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, J. M. Roney, M. Tasevsky, Koichi Nagai, W. Mohr, J. Grunhaus, A. Mutter, Sachio Komamiya, K. Kruger, T. Saeki, J. G. Layter, Alain Bellerive, G. Anagnostou, H. Voss, G. Giacomelli, Pamela Ferrari, A. De Roeck, M. Kobel, and Frans Meijers
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Nuclear physics, Massless particle, Pair production, Excited state, 0103 physical sciences, Neutralino, Gravitino, 010306 general physics, Bhabha scattering
Abstract: Events with a final state consisting of two or more photons and large missing transverse energy have been observed in e + e − collisions at centre-of-mass energies in the range 192–209 GeV using the OPAL detector at LEP. Cross-section measurements are performed within the kinematic acceptance of the selection and compared with the expectations from the Standard Model process e + e − → ν ν ¯ γ γ ( γ ) . No evidence for new physics contributions to this final state is observed. Upper limits on σ ( e + e − → X X ) ⋅ BR 2 ( X → Y γ ) are derived for the case of stable and invisible Y. In the case of massive Y the combined limits obtained from all the data range from 10 to 60 fb, while for the special case of massless Y the range is 20 to 40 fb. The limits apply to pair production of excited neutrinos ( X = ν * , Y = ν ), to neutralino production ( X = χ ˜ 2 0 , Y = χ ˜ 1 0 ) and to supersymmetric models in which X = χ ˜ 1 0 and Y = G ˜ is a light gravitino.
Published: 2004

14. Search for bosonic stop decays in R-parity violating supersymmetry in e+p collisions at HERA

Author: J. Wagner, J. Böhme, Karel Cerny, A. Uraev, M. Beckingham, Stephen Maxfield, J. Stiewe, Matthias Ulrich Mozer, Wolfgang Lange, Pierre Marage, A. Fedotov, Günter Flügge, V. Lubimov, S. Ginzburgskaya, J. Gayler, A. Lebedev, R. Plačakytė, C. Kiesling, A. De Roeck, E. Tzamariudaki, A. J. Campbell, C. Veelken, Andrew Mehta, J. Bracinik, K. Nankov, L. N. Shtarkov, V. Korbel, N. Gogitidze, D. Haidt, T. Laštovička, Laurent Schoeffel, R. Weber, G. Ossoskov, P. E. Reimer, E. Barrelet, N. Keller, Paul Laycock, E. Malinovski, A. Vest, G. Weber, U. Straumann, C. Werner, Z. Rurikova, Murrough Landon, O. Behnke, Emmanuel Sauvan, O. Behrendt, G. Grindhammer, E. A. De Wolf, Ch. Berger, Peter Robmann, T. J. Sloan, S. Vinokurova, V. Lendermann, J. Dingfelder, S. Gorbounov, R. Lemrani, P. Kostka, Eram Rizvi, B. Portheault, K. H. Hiller, R. C. W. Henderson, G. G. Winter, N. Werner, V. Schröder, M.-O. Boenig, T. Kuhr, Dusan Bruncko, J. Turnau, G. Heinzelmann, B. Naroska, I. Herynek, S. Levonian, R. Roosen, E. E. Elsen, V. Dodonov, P. Van Mechelen, T. Kluge, O. Henshaw, Paul Richard Newman, Grzegorz Nowak, A. Dubak, T. Greenshaw, Erika Garutti, A. Rostovtsev, V. Jemanov, S. Backovic, R. D. Heuer, R. Koutouev, A. Petrukhin, H. Lueders, S. Mangano, Y. Vazdik, M. Wessels, L. Lytkin, P.D. Thompson, M. Ellerbrock, M. Schneider, Cristinel Diaconu, Stefania Xella, J. Ferencei, G. Herrera, I. Morozov, M. Martisikova, J. Naumann, David South, Bradley Cox, J. Marks, I. R. Kenyon, R. Wolf, Alexander Paramonov, L. Bystritskaya, Y. R. Coppens, C. Pascaud, B. Stella, H. Spitzer, K. Daum, F. Tomasz, K. Krüger, Claus Kleinwort, Nicolas Berger, Th. Naumann, Gero Flucke, J. Kennedy, V. Brisson, G. Knies, M. Kapichine, M. Nozicka, H. Zohrabyan, B. Wessling, C. Risler, Guenter Eckerlin, I. Sheviakov, S. Schmitt, A. Nikiforov, E. Gabathuler, D. Lüke, Roland Horisberger, A. Valkárová, Daniel Pitzl, D. Traynor, A. Asmone, A. Schöning, M. Jacquet, E. Wünsch, Rainer Stamen, A. Specka, J. Zálešák, B. Delcourt, V. Spaskov, S. Baumgartner, I. Strauch, Philipp Fleischmann, Dave Sankey, D. Utkin, F. Cassol-Brunner, L. Hajduk, J. Kückens, K. Wacker, Martin Erdmann, M. Urban, J. Kroseberg, Anton Babaev, C. Gwilliam, S. Schätzel, S. Caron, A. Zhelezov, B. Roland, K. Müller, R. Pöschl, I. Milcewicz-Mika, Leif J. Jönsson, Christian Schwanenberger, B. Reisert, J. Bähr, P. Baranov, G. D. Patel, Adrian Perieanu, J. G. Contreras, A. Aktas, Martin Karlsson, R. Marshall, C. Niebuhr, Peter Schleper, T. Klimkovich, V. Chekelian, M. Peez, A. Mohamed, V. Nagovizin, H. U. Martyn, Georgios Tsipolitis, K. Meier, M. Fleischer, B. Olivier, N. Malden, J. Cvach, G. Thompson, S. Egli, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, Y. Soloviev, Max Klein, A. Makankine, G. Buschhorn, P. Höting, D. Ozerov, D.P. Brown, J. Haller, Pavel Murin, H. Grässler, W. Yan, J. V. Morris, D. Kant, Judith Katzy, Y.H. Fleming, H. Henschel, A. Bunyatyan, M. Ibbotson, N. Loktionova, V. Yeganov, Bogdan Povh, F. Sefkow, J.C. Bizot, A. Hovhannisyan, D.K. Nikitin, V. Volchinski, F. P. Schilling, Katerina Lipka, C. Duprel, I. Tsurin, I. Foresti, G. Cozzika, M. Ismail, David Milstead, V. Tchoulakov, P. A. Smirnov, C. Wissing, H. Meyer, R. Demirchyan, Stefan Valkar, J. Garvey, K. Rybicki, Laurent Favart, T. Anthonis, F. Moreau, H.-B. Bröker, Hannes Jung, Alexander Zhokin, J. Becker, C. Vallée, Xavier Janssen, A. M. Fomenko, C. Gerlich, Christoph Grab, A. D.R. Vargas Trevino, J. Scheins, Klaus Desch, Thorsten Lux, L. Janauschek, N. Van Remortel, A. Rimmer, W.D. Dau, J. B. Dainton, A. Knutsson, B. Leißner, E. Perez, R. Gerhards, J. Formánek, Wolfram Erdmann, B. List, K. Gabathuler, D. Wegener, S. Ghazaryan, V. Efremenko, B. Koblitz, S. Mikocki, S. Schmidt, John A Coughlan, F. Zomer, V. Andreev, Magnus Hansson, Yves Sirois, G. Franke, Daniel Johnson, L. Goerlich, F. Eisele, R. Oganezov, K. Sedlák, Ewelina Lobodzinska, Anna Kropivnitskaya, R. Felst, J. Žáček, Hans-Christian Schultz-Coulon, R. Eichler, E.-E. Woehrling, L. Lindfeld, J. E. Olsson, W. Bartel, Malte Hildebrandt, F. W. Büsser, T. Berndt, Natasa Raicevic, Vincent Boudry, A. N. Morozov, M. Gregori, Zhen Zhang, Ricardo Lopez-Fernandez, J-P. Meyer, D. Hoffmann, Andreas Meyer, D. Meer, A. Usik, and G. Frising
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Hadron, Scalar (mathematics), Yukawa potential, Supersymmetry, HERA, Nuclear physics, R-parity, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: A search for scalar top quarks in R-parity violating supersymmetry is performed in e(+)p collisions at HERA using the H1 detector. The data, taken at roots = 319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb(-1). The resonant production of scalar top quarks t in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay t --> BW. The R-parity violating decay of the sbottom quark b --> dv(e) and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay t --> eq. Mass dependent limits on lambda' are obtained in the framework of the minimal supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength. (C) 2004 Elsevier B.V. All rights reserved.
Published: 2004

15. Measurement of the proton structure function F2 at low Q2 in QED Compton scattering at HERA

Author: W. Yan, N. Loktionova, A. D.R. Vargas Trevino, Paul Richard Newman, Grzegorz Nowak, A. Hovhannisyan, R. Koutouev, A. Petrukhin, Laurent Schoeffel, J. Žáček, I. R. Kenyon, R. Plačakytė, I. Foresti, G. Cozzika, I. Sheviakov, S. Schmitt, M. Jacquet, I. Tsurin, H. Spitzer, Pierre Marage, S. Levonian, E. Perez, P. Höting, Hans-Christian Schultz-Coulon, Murrough Landon, Stefan Valkar, S. Schmidt, Z. Ratiani, Ewelina Lobodzinska, C. Wissing, N. Keller, K. Gabathuler, I. Milcewicz-Mika, H.-B. Bröker, Hannes Jung, R. Gerhards, V. Lendermann, V. Schröder, S. Gorbounov, Anna Kropivnitskaya, R. Felst, D. Wegener, V. Korbel, R. Eichler, J. Kennedy, V. Brisson, C. Niebuhr, Alexander Zhokin, J. Becker, Caroline Collard, J. Zálešák, S. Egli, J. V. Morris, V. Spaskov, Adrian Perieanu, C. Vallée, R. Heremans, E.-E. Woehrling, H. U. Martyn, B. Portheault, Matthias Klein, Y. Soloviev, O. Behnke, P. E. Reimer, David South, Magnus Hansson, J. Kückens, K. Wacker, A. Bunyatyan, L. Goerlich, E. E. Elsen, S. Baumgartner, V. Volchinski, Th. Naumann, P. Van Mechelen, Pavel Murin, H. Grässler, Daniel Pitzl, V. Lubimov, V. Efremenko, D. Traynor, B. Koblitz, M. Ibbotson, F. P. Schilling, Thorsten Lux, L. Janauschek, H. Meyer, R. Demirchyan, T. Laštovička, N. Van Remortel, R. D. Heuer, A. Asmone, Xavier Janssen, I. Morozov, J. Garvey, F. Cassol-Brunner, L. Hajduk, C. Werner, J. Scheins, G. G. Winter, D. Lüke, E. Barrelet, Leif J. Jönsson, Benoit Roland, F. Eisele, Z. Rurikova, E. Gabathuler, L. Bystritskaya, S. Mikocki, G. Thompson, E. Wünsch, D.P. Brown, M. Urban, J. Haller, H. Zohrabyan, R. Oganezov, A. M. Fomenko, V. Chekelian, K. Sedlák, Dave Sankey, T. Klimkovich, W.D. Dau, J. B. Dainton, K. Rybicki, A. Schöning, Judith Katzy, E. A. De Wolf, Ch. Berger, John A Coughlan, C. Gerlich, Karlheinz Meier, R. Roosen, M.-O. Boenig, A. Makankine, Laurent Favart, L. N. Shtarkov, Christoph Grab, J. Wagner, V. Nagovizin, K. Daum, G. Buschhorn, B. Leißner, M. Peez, Y.H. Fleming, T. Anthonis, F. Tomasz, B. Stella, G. D. Patel, J. Kroseberg, S. Mangano, D.P. Johnson, D. Ozerov, J. Böhme, H. Henschel, J.C. Bizot, Karel Cerny, C. Duprel, G. Knies, A. Uraev, N. Malden, F. Zomer, M. Beckingham, R. Weber, Nicolas Berger, Matthias Ulrich Mozer, A. Lebedev, Gero Flucke, V. Andreev, C. Risler, A. Fedotov, Günter Flügge, D. Haidt, L. Lytkin, Cristinel Diaconu, Georgios Tsipolitis, M. Fleischer, M. Kapichine, M. Nozicka, I. Herynek, C. Kiesling, Dusan Bruncko, Eram Rizvi, G. Heinzelmann, A. De Roeck, V. Dodonov, Martin Erdmann, E. Tzamariudaki, A. J. Campbell, S. Michine, J. Formánek, C. Gwilliam, A. Rostovtsev, B. Naroska, J-P. Meyer, B. Delcourt, Yves Sirois, J. Cvach, Bogdan Povh, F. Sefkow, G. Ossoskov, Rainer Stamen, T. Kluge, T. Greenshaw, Erika Garutti, M. Ismail, David Milstead, P. A. Smirnov, P. Baranov, G. Franke, Wolfram Erdmann, B. List, Peter Schleper, S. Schätzel, J. Ferencei, M. Martisikova, J. Naumann, C. Pascaud, J. Marks, Guenter Eckerlin, A. Nikiforov, A. Dubak, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Claus Kleinwort, Sergey Rusakov, P. Truöl, D. Utkin, B. Reisert, J. Bähr, S. Ghazaryan, Y. Vazdik, P.D. Thompson, M. Schneider, S. Caron, Stefania Xella, D.K. Nikitin, B. Wessling, R. Pöschl, O. Henshaw, R. Marshall, K. Müller, Christian Schwanenberger, Stephen Maxfield, M. Hildebrandt, J. Stiewe, Andrew Mehta, J. Bracinik, N. Gogitidze, Anton Babaev, J. G. Contreras, A. Mohamed, M. Wessels, M. Ellerbrock, G. Herrera, Bradley Cox, R. Wolf, Klaus Desch, A. Rimmer, A. Knutsson, Zhen Zhang, Ricardo Lopez-Fernandez, D. Hoffmann, Andreas Meyer, D. Meer, A. Usik, G. Frising, J. E. Olsson, W. Bartel, F. W. Büsser, T. Berndt, Natasa Raicevic, Vincent Boudry, A. N. Morozov, M. Gregori, L. Lindfeld, G. Weber, U. Straumann, V. Jemanov, V. Yeganov, A. Aktas, Y. R. Coppens, F. Moreau, B. Olivier, D. Kant, Katerina Lipka, K. H. Hiller, R. C. W. Henderson, V. Tchoulakov, I. Strauch, Philipp Fleischmann, A. Vest, O. Behrendt, S. Vinokurova, Peter Robmann, R. Lemrani, P. Kostka, J. Turnau, A. Specka, S. Backovic, H. Lueders, Wolfgang Lange, J. Gayler, C. Veelken, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, J. Dingfelder, N. Werner, T. Kuhr, Roland Horisberger, A. Valkárová, and Martin Karlsson
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Photon, Proton, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Detector, Structure function, Compton scattering, HERA, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: The proton structure function F-2(x, Q(2)) is measured in inelastic QED Compton scattering using data collected with the H1 detector at HERA. QED Compton events are used to access the kinematic range of very low virtualities of the exchanged photon, Q(2), down to 0.5 GeV2, and Bjorken x up to similar to 0.06, a region which has not been covered previously by inclusive measurements at HERA. The results are in agreement with the measurements from fixed target lepton-nucleon scattering experiments. (C) 2004 Published by Elsevier B.V.
Published: 2004

16. Flavour independent search for Higgs bosons decaying into hadronic final states in e+e− collisions at LEP

Author: Silvia Arcelli, N. Kanaya, Daniel Lellouch, Erez Etzion, Gordon H. Hanson, M. Ford, Takehiko Mori, A. Okpara, Stefan Kluth, Shlomit Tarem, T. R. Junk, Christoph Geich-Gimbel, Gregor Herten, R. M. Brown, Lorne Levinson, J. Böhme, M. Giunta, Gianni Masetti, C. Y. Chang, Alexander Oh, C. Pahl, T. Behnke, A. J. Martin, Georges Azuelos, E. Tsur, C. M. Hawkes, J. Goldberg, A. Hocker, S. Moed, G. D. Lafferty, S. Yamashita, E. K. U. Gross, I. R. Bailey, Gideon Bella, H. J. Burckhart, I. Nakamura, D. Lanske, D. R. Ward, K. Hoffman, H. Mes, P. Igo-Kemenes, A. Mutter, J. E. Pilcher, A. D. Schaile, Isabel Marian Trigger, K. W. Bell, M. A. Thomson, Robert McPherson, Gabriella Pasztor, P. Vannerem, Fabrizio Fabbri, A. Frey, Raimund Ströhmer, R. J. Hemingway, I. P. Duerdoth, M. Gruwé, K. Ishii, H. Jeremie, P. Gagnon, S. Braibant, James Pinfold, D. Zer-Zion, W. Mader, J. C. Hill, Lutz Feld, B. W. Kennedy, F. K. Loebinger, J. Lillich, A. Harel, Thorsten Wengler, R. Seuster, Tobias Kramer, Ikuo Ueda, D. M. Strom, D. E. Plane, Klaus Rabbertz, Ivor Fleck, Yoram Rozen, R. K. Keeler, Christoph Rembser, J. M. Roney, M. Boutemeur, F. S. Merritt, J. Lu, Joleen Pater, Edward K. G. Sarkisyan, C. P. Ward, Zoltan Laszlo Trocsanyi, B. Poli, Richard Teuscher, Stephen Lloyd, B. C. Shen, P. Jovanovic, Tara Shears, M. Tasevsky, Beatrix Dienes, Richard Nisius, M. Donkers, P. Tran, O. Schaile, M. Przybycień, A. Klier, R. J. Batley, Balazs Ujvari, H. A. Neal, Arnulf Quadt, Koichi Nagai, W. Mohr, Marco Cuffiani, S. Söldner-Rembold, Gabriele Benelli, Siegfried Bethke, W. G. Scott, Peter Krieger, Junichi Kanzaki, J. W. Gary, P. M. Watkins, T. Kuhl, Paolo Giacomelli, A. A. Carter, Gunter Wolf, N. K. Watson, G. Gaycken, J. A. McKenna, J. Grunhaus, L. Brigliadori, M. Hamann, K. Buesser, M. Schumacher, M. Hauschild, D. Karlen, P. Renkel, Oliver Pooth, C. F. Vollmer, E. A. De Wolf, John Allison, Teresa Barillari, M. Verzocchi, S. W. O'Neale, P. O. Günther, A. Csilling, C. Ainsley, M. J. Oreglia, Dezso Horvath, Stefano Rosati, Jochen Schieck, R. J. Sobie, R. J. Barlow, P. Scharff-Hansen, E. Torrence, A. Gupta, Dave Charlton, P. F. Åkesson, Giovanni Abbiendi, D. Axen, Oana Elena Vickey Boeriu, P. Amaral, Gideon Alexander, K. J. Anderson, F. Spano, R. G. Kellogg, Joost Vossebeld, Sachio Komamiya, Graham Wilson, Matthias Schröder, Klaus Desch, P. J. Bell, Peter Sherwood, Csaba Hajdu, L. Zivkovic, D. J. Miller, Stefano Marcellini, J. Ludwig, P. Mättig, Shoji Asai, Satoshi Mihara, Shlomo Dado, Ehud Duchovni, A. M. Smith, J. R. Carter, Katja Klein, K. Runge, P. Bock, Achim Stahl, James Letts, W. Menges, Otmar Biebel, D. Waller, K. Kruger, T. Saeki, R. D. Heuer, A. Michelini, Andris Skuja, T. Schörner-Sadenius, J. von Krogh, H. Landsman, Guenter Duckeck, Kiyotomo Kawagoe, P. S. Wells, Frank Fiedler, D. Toya, T. Kobayashi, Tetsuro Mashimo, M. F. Turner-Watson, A. Ludwig, Claudia Ciocca, K. Sachs, H. Nanjo, Terry Richard Wyatt, A. T. Watson, S. Campana, Giora Mikenberg, Philip Bechtle, M. Kupper, E. L. Barberio, R. J. Hawkings, Norbert Wermes, T. Kawamoto, D. Wetterling, S. Orito, J. Dubbert, R. K. Carnegie, J. A. Wilson, H. Voss, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, Alain Bellerive, G. Anagnostou, Pamela Ferrari, J. G. Layter, and R. Vértesi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Hadron, Scalar boson, 01 natural sciences, Standard Model, Nuclear physics, Pair production, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Boson, Event generator
Abstract: A search for the Higgsstrahlung process e + e − → hZ is described, where the neutral Higgs boson h is assumed to decay into hadronic final states. In order to be sensitive to a broad range of models, the search is performed independent of the flavour content of the Higgs boson decay. The analysis is based on e + e − collision data collected by the OPAL detector at energies between 192 and 209 GeV. The search does not reveal any significant excess over the Standard Model background prediction. Results are combined with previous searches at energies around 91 and at 189 GeV. A limit is set on the product of the cross-section and the hadronic branching ratio of the Higgs boson, as a function of the Higgs boson mass. Assuming the hZ coupling predicted by the Standard Model, and a Higgs boson decaying only into hadronic final states, a lower bound of 104 GeV / c 2 is set on the mass at the 95% confidence level.
Published: 2004

17. Study of Bose-Einstein correlations in ${\rm e}^ + {\rm e}^-\to {\rm W}^ + {\rm W}^-$ events at LEP

Author: N. Kanaya, Christoph Geich-Gimbel, H. Mes, I. P. Duerdoth, M. J. Oreglia, M. A. Thomson, E. K. U. Gross, Shlomo Dado, S. Braibant, Alexander Oh, R. M. Brown, Lorne Levinson, L. Zivkovic, M. Przybycień, Tara Shears, T. Barillari, Guenter Duckeck, M. Hamann, J. Grunhaus, J. R. Carter, A. Csilling, I. Nakamura, D. Lanske, J. M. Roney, A. A. Carter, B. Poli, Ehud Duchovni, M. Tasevsky, Richard Teuscher, D. Toya, D. R. Ward, Koichi Nagai, I. R. Bailey, Lutz Feld, W. Mohr, M. Verzocchi, S. Yamashita, P. F. Åkesson, Giovanni Abbiendi, Thorsten Wengler, K. Hoffman, P. Igo-Kemenes, R. J. Sobie, C. Pahl, A. Michelini, R. J. Batley, Joost Vossebeld, H. Landsman, W. Menges, Otmar Biebel, Satoshi Mihara, K. Ishii, H. Jeremie, Klaus Desch, Georges Azuelos, E. Tsur, C. F. Vollmer, Gideon Bella, T. R. Wyatt, P. Mättig, Shoji Asai, D. Zer-Zion, Giora Mikenberg, M. Boutemeur, F. S. Merritt, Katja Klein, D. E. Plane, C. M. Hawkes, Pamela Ferrari, J. G. Layter, J. von Krogh, H. J. Burckhart, N. K. Watson, Matthias Schröder, James Pinfold, R. Seuster, G. Gaycken, F. K. Loebinger, Isabel Marian Trigger, K. W. Bell, Jochen Schieck, T. Kobayashi, O. Schaile, M. Schumacher, P. Gagnon, R. J. Hawkings, E. L. Barberio, J. A. McKenna, Frank Fiedler, A. Ludwig, R. J. Barlow, Kiyotomo Kawagoe, Ivor Fleck, J. C. Hill, Yoram Rozen, L. Brigliadori, Tobias Kramer, P. Tran, T. Kuhl, B. C. Shen, E. A. De Wolf, S. Campana, Joleen Pater, P. S. Wells, C. Ainsley, T. Schörner-Sadenius, M. Donkers, J. Dubbert, R. K. Carnegie, Siegfried Bethke, Norbert Wermes, Edward K. G. Sarkisyan, A. T. Watson, P. Amaral, S. W. O'Neale, Andris Skuja, W. G. Scott, Junichi Kanzaki, J. A. Wilson, T. Kawamoto, J. Goldberg, K. Buesser, J. W. Gary, A. D. Schaile, Gabriella Pasztor, Gabriele Benelli, Tetsuro Mashimo, M. F. Turner-Watson, Daniel Lellouch, A. J. Martin, P. O. Günther, Balazs Ujvari, A. Mutter, D. J. Miller, Zoltan Laszlo Trocsanyi, Takehiko Mori, P. Vannerem, H. A. Neal, A. Harel, S. Orito, N. Meyer, Dezso Horvath, Ikuo Ueda, D. M. Strom, J. Lu, M. Kupper, K. J. Anderson, Gideon Alexander, C. P. Ward, W. Mader, Robert McPherson, Dave Charlton, S. Söldner-Rembold, Alain Bellerive, Gianni Masetti, C. Y. Chang, Fabrizio Fabbri, A. Frey, P. Scharff-Hansen, E. Torrence, A. Gupta, Sachio Komamiya, S. Moed, R. D. Heuer, T. R. Junk, A. M. Smith, R. J. Hemingway, G. Anagnostou, Klaus Rabbertz, Stephen Lloyd, Oliver Pooth, Gregor Herten, K. Kruger, T. Saeki, H. Voss, John Allison, J. Lillich, B. W. Kennedy, Raimund Ströhmer, G. Giacomelli, P. Jovanovic, A. De Roeck, M. Kobel, Christoph Rembser, Peter Krieger, J. E. Pilcher, R. G. Kellogg, G. W. Wilson, Frans Meijers, M. Hauschild, Beatrix Dienes, Csaba Hajdu, Erez Etzion, Stefano Marcellini, Stefan Kluth, Shlomit Tarem, James Letts, R. Vértesi, M. Giunta, T. Behnke, Gordon H. Hanson, M. Ford, Thomas Kress, Gunter Wolf, D. Karlen, D. Axen, Oana Elena Vickey Boeriu, F. Spano, Peter Sherwood, J. Ludwig, K. Runge, P. Bock, G. D. Lafferty, R. K. Keeler, Arnulf Quadt, P. M. Watkins, P. Renkel, M. Gruwé, Richard Nisius, Marco Cuffiani, P. J. Bell, Achim Stahl, H. Nanjo, Claudia Ciocca, K. Sachs, Philip Bechtle, and Paolo Giacomelli
Subjects: Condensed Matter::Quantum Gases, Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Monte Carlo method, High Energy Physics::Experiment, Bose–Einstein correlations, Engineering (miscellaneous), Bar (unit), Boson
Abstract: Bose-Einstein correlations between like-sign charged-particle pairs in e(+)e(-) --> W+ W- events recorded with the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV are studied. Recently proposed methods which allow direct searches for correlations in the data via distributions of test variables are used to investigate the presence of correlations between hadrons originating from different W bosons in W+W- --> q (q) over barq (q) over bar events. Within the statistics of the data sample no evidence for inter - WW Bose-Einstein correlations is obtained. The data are also compared with predictions of a recent implementation of Bose-Einstein correlation effects in the Monte Carlo model PYTHIA.
Published: 2004

18. Determining resonance parameters of heavy Higgs bosonsat a future linear collider

Author: N. Meyer and Klaus Desch
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Branching fraction, Electron–positron annihilation, Elementary particle, Nuclear physics, Positron, Mass spectrum, Higgs boson, High Energy Physics::Experiment, Engineering (miscellaneous), Boson, Positron annihilation
Abstract: This study investigates the potential of an Electron-Positron Linear Collider for measuring resonance parameters of Higgs bosons beyond the mass range studied so far. The analysis is based on the reconstruction of events from the Higgs-strahlung process $\mathrm{e}^ + \mathrm{e}^-\to\mathrm{HZ}$ . It is shown that the total width $\Gamma_{tot}^{\mathrm{H}}$ , the mass m H and the event rate N can be measured from the mass spectrum in a model independent way. Also, the branching ratios BR H WW and BR H ZZ can be measured, assuming these are the only relevant Higgs decay modes. The simulation includes realistic detector effects and all relevant Standard Model background processes. Results are given for m H = 200-320 GeV assuming ${\cal \int\!\! L} = 500$ fb-1 integrated luminosity at a collision energy $\sqrt{s} = 500$ GeV.
Published: 2004

19. Muon pair production in ep collisions at HERA

Author: Wolfgang Lange, Laurent Schoeffel, J. Gayler, Paul Laycock, E. Malinovski, Emmanuel Sauvan, J. C. Bizot, Murrough Landon, Max Klein, C. Niebuhr, G. Grindhammer, N. Keller, J. Dingfelder, S. Egli, Y. Soloviev, V. Lendermann, V. Schröder, P. D. Thompson, S. Levonian, A. B. Meyer, K. Meier, Dusan Bruncko, S. Mangano, F. Eisele, H. U. Martyn, K. Sedlák, N. Werner, M. Ismail, David Milstead, S. Gorbounov, Y.R. Coppens, B. Naroska, J. B. Dainton, F. Moreau, J. Hladký, V. Korbel, Wolfram Erdmann, T. Kluge, J. E. Olsson, T. Greenshaw, J. G. Contreras, Pierre Marage, T. Kuhr, P. A. Smirnov, F. P. Schilling, A. Makankine, G. Buschhorn, D. Ozerov, R. Weber, J. V. Morris, S. D. Kolya, P. Van Mechelen, S. Michine, A. Bunyatyan, F. W. Büsser, J. Žáček, J. Haller, D. Kant, Stephen Maxfield, J. Ferencei, M. Martisikova, C. Veelken, R. D. Heuer, I. Morozov, L. Bystritskaya, M.-O. Boenig, P. Murín, J. Garvey, J. Scheins, C. Johnson, H. Zohrabyan, Hans-Christian Schultz-Coulon, J. Stiewe, A. Vichnevski, I. R. Kenyon, T. Berndt, C. Risler, A. M. Fomenko, J. D. Dowell, D.P. Brown, S. Ghazaryan, Alexandre Lebedev, W.D. Dau, B. Leißner, Natasa Raicevic, Vincent Boudry, K. Rybicki, Christoph Grab, D. Meer, J. Marks, Andrew Mehta, J. Bracinik, Claus Kleinwort, V. Lubimov, I. Sheviakov, S. Schmitt, C. Werner, D. Haidt, F. Tomasz, C. Gerlich, G. Thompson, O. Behnke, Martin Erdmann, S. Lüders, A. N. Morozov, Nicolas Berger, C. Berger, J. Formánek, M. Gregori, N. Gogitidze, W. Bartel, R. Eichler, G. Knies, S. Caron, T. J. Sloan, A. J. Campbell, B. E. Cox, K. H. Hiller, R. C. W. Henderson, Eram Rizvi, R. Pöschl, A. Rostovtsev, I. Strauch, Philipp Fleischmann, Peter Robmann, M. Winde, P. Baranov, M. Hildebrandt, Roland Horisberger, G. Heinzelmann, V. Dodonov, Daniel Pitzl, D. Traynor, M. Jacquet, A. Asmone, H. Grässler, M. Ibbotson, V. Spaskov, J. Kroseberg, Judith Katzy, H. Henschel, A. Valkárová, L. N. Shtarkov, F. Cassol-Brunner, K. Gabathuler, D.K. Nikitin, O. Henshaw, Paul Newman, D. Wegener, V. Grabski, W. Braunschweig, F. Zomer, J. Kückens, Y.H. Fleming, H. Spitzer, Rainer Stamen, L. Hajduk, C. Wissing, Laurent Favart, T. Anthonis, M. Wessels, D. South, E. Wünsch, C. Duprel, M. Urban, Adrian Perieanu, Dave Sankey, N. Delerue, M. Ellerbrock, V. Andreev, A. Specka, Thorsten Lux, L. Janauschek, Martin Karlsson, Gero Flucke, R. Marshall, B. Reisert, J. Bähr, G. Herrera, B. Waugh, G. Weber, M. C. Cousinou, U. Straumann, M. Kapichine, M. Nozicka, G. D. Patel, V. Jemanov, S. Backovic, B. Wessling, Thomas Naumann, V. Efremenko, B. Koblitz, V. Chekelian, D.P. Johnson, V. Nagovizin, N. Malden, Georgios Tsipolitis, H. Lueders, V. Volchinski, A. Vest, O. Behrendt, E. E. Woehrling, S. Vinokurova, M. Fleischer, S. Mikocki, J. Wagner, Yves Sirois, R. Lemrani, H. Meyer, Klaus Desch, J. Böhme, R. Demirchyan, P. Kostka, Karel Cerny, A. Uraev, G. Franke, J. Turnau, L. Lytkin, Cristinel Diaconu, B. List, A. Knutsson, A. Babaev, A. Aktas, S. Schätzel, Bogdan Povh, B. Olivier, Xavier Janssen, F. Sefkow, G. Ossoskov, I. Milcewicz, Leif J. Jönsson, K. Müller, Christian Schwanenberger, Grzegorz Nowak, R. Koutouev, A. Petrukhin, Zhen Zhang, J-P. Meyer, Ricardo Lopez-Fernandez, I. Foresti, S. Baumgartner, G. Cozzika, C. Pascaud, D. Hoffmann, Guenter Eckerlin, André Schöning, A. Usik, Stefan Valkar, G. Frising, J. Cvach, A. Belousov, Peter Schleper, H.-B. Bröker, Hannes Jung, J. Kennedy, Alexander Zhokin, J. Becker, C. Vallée, P.J.W. Faulkner, V. Brisson, R. Heremans, S. Vassiliev, Sergey Rusakov, P. Truöl, W. Yan, C. Collard, T. Laštovička, N. Loktionova, J. Gassner, A. Hovhannisyan, E. Barrelet, Z. Rurikova, I. Tsurin, B. Portheault, E. A. De Wolf, J. Zalesak, E. E. Elsen, J. Martyniak, R. Roosen, J. A. Coughlan, I. Herynek, B. Delcourt, B. Stella, K. Daum, J. Rauschenberger, A. D.R. Vargas Trevino, E. Perez, R. Gerhards, P. E. Reimer, G. G. Winter, J. Naumann, L. Goerlich, P. Höting, S. Schmidt, Ewelina Lobodzinska, Anna Kropivnitskaya, R. Felst, M. Beckingham, Matthias Ulrich Mozer, A. Fedotov, Günter Flügge, C. Kiesling, A. De Roeck, E. Tzamariudaki, E. Gabathuler, K. Wacker, A. Dubak, Y. Vazdik, D. Lüke, M. Schneider, M. Peez, H1 Collaboration, 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 Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-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), H1, 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), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Damoiseaux, Magali
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, FOS: Physical sciences, HERA, Electron, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pair production, Full data, 0103 physical sciences, Transverse momentum, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: Cross sections for the production of two isolated muons up to high di-muon masses are measured in ep collisions at HERA with the H1 detector in a data sample corresponding to an integrated luminosity of 71 pb-1 at a centre of mass energy of √s=319 GeV. The results are in good agreement with Standard Model predictions, the dominant process being photon-photon interactions. Additional muons or electrons are searched for in events with two high transverse momentum muons using the full data sample corresponding to 114 pb-1, where data at √s=301 GeV and √s=319 GeV are combined. Both the di-lepton sample and the tri-lepton sample agree well with the predictions. © 2004 Published by Elsevier B.V., 0, DESY-03-159 / hep-ex/0311015, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2004

20. Search for the single production of doubly-charged Higgs bosons and constraints on their couplings from Bhabha scattering

Author: C. F. Vollmer, Jochen Schieck, R. J. Barlow, Alexander Oh, I. Nakamura, D. Lanske, Graham Wilson, Gunter Wolf, K. Stephens, N. Kanaya, Tara Shears, Shlomo Dado, D. Karlen, H. Mes, I. P. Duerdoth, S. Braibant, K. Hoffman, A. Leins, P. Gagnon, S. Yamashita, P. Igo-Kemenes, K. Ishii, H. Jeremie, Richard Teuscher, D. Toya, Giora Mikenberg, Arnulf Quadt, O. Schaile, H. Landsman, P. M. Watkins, J. Grunhaus, P. J. Bell, L. Brigliadori, T. Kuhl, R. J. Batley, M. J. Oreglia, A. D. Schaile, Gabriella Pasztor, P. Vannerem, D. R. Ward, Yoram Rozen, Zoltan Laszlo Trocsanyi, Dong Hee Kim, G. Gaycken, L. L. Kormos, G. Anagnostou, Richard J. K. Taylor, Gideon Bella, James Pinfold, R. Seuster, L. Zivkovic, E. L. Barberio, P. Renkel, M. Schumacher, A. J. Martin, H. J. Burckhart, M. Groll, Silvia Arcelli, D. E. Plane, S. W. O'Neale, C. P. Ward, Satoshi Mihara, P. O. Günther, Erez Etzion, J. R. Carter, G. N. Patrick, Katja Klein, Junichi Kanzaki, J. Polok, Stefan Kluth, Shlomit Tarem, W. Menges, Otmar Biebel, S. Söldner-Rembold, Sachio Komamiya, K. Buesser, E. A. De Wolf, Pamela Ferrari, J. G. Layter, M. Giunta, Georges Azuelos, K. J. Anderson, Daniel Lellouch, P. Amaral, J. A. McKenna, W. Mader, E. Tsur, C. M. Hawkes, J. Goldberg, Frank Fiedler, H. Nanjo, D. Waller, Takehiko Mori, A. Okpara, D. Axen, Oana Elena Vickey Boeriu, K. Kruger, T. Saeki, Gianni Masetti, C. Y. Chang, P. Tran, Matthias Schröder, Norbert Wermes, T. Kawamoto, C. Pahl, D. J. Miller, F. Spano, Peter Sherwood, Isabel Marian Trigger, K. W. Bell, G. D. Lafferty, S. Orito, H. Voss, T. J. McMahon, J. C. Hill, J. Ludwig, Christoph Rembser, P. Scharff-Hansen, K. Runge, S. Moed, P. Bock, Tobias Kramer, W. J. McDonald, B. C. Shen, P. F. Åkesson, Klaus Rabbertz, R. J. Hemingway, M. Donkers, Siegfried Bethke, M. A. Thomson, Stephen Lloyd, J. Dubbert, Robert Vertesi, R. K. Carnegie, T. Schörner-Sadenius, J. Lillich, G. Giacomelli, W. G. Scott, Dave Charlton, M. Gruwé, Raimund Ströhmer, A. M. Smith, A. Mutter, C. Hensel, A. De Roeck, M. Kobel, P. Jovanovic, E. K. U. Gross, Peter Krieger, J. W. Gary, Ehud Duchovni, Andris Skuja, T. Behnke, Frans Meijers, Guenter Duckeck, K. Harder, Richard Nisius, Tetsuro Mashimo, M. F. Turner-Watson, A. Macpherson, A. Michelini, Shoji Asai, Marek Tasevsky, Paolo Giacomelli, Dezso Horvath, R. D. Heuer, J. A. Wilson, Marco Cuffiani, M. Kupper, Beatrix Dienes, T. Kobayashi, S. Campana, J. M. Roney, R. M. Brown, Lorne Levinson, M. Harin-Dirac, Koichi Nagai, B. W. Kennedy, I. R. Bailey, W. Mohr, G. Karapetian, Gideon Alexander, Achim Stahl, E. Torrence, A. Gupta, A. Csilling, S. Rosati, A. Harel, Ikuo Ueda, D. M. Strom, J. Lu, M. Hamann, Richard Keeler, R. J. Sobie, Joost Vossebeld, Klaus Desch, T. R. Junk, P. S. Wells, Robert McPherson, J. von Krogh, Terry Richard Wyatt, A. T. Watson, Fabrizio Fabbri, A. Frey, R. J. Hawkings, D. Wetterling, M. Przybycień, A. A. Carter, M. Verzocchi, Giovanni Abbiendi, Christoph Geich-Gimbel, A. Fürtjes, Lutz Feld, M. Boutemeur, F. S. Merritt, Kiyotomo Kawagoe, G. P. Siroli, Christoph Schwick, Thorsten Wengler, B. Caron, Gabriele Benelli, M. Hauschild, Gregor Herten, J. E. Pilcher, N. K. Watson, C. Ainsley, P. Mättig, Alain Bellerive, B. Poli, K. Sachs, Philip Bechtle, Oliver Pooth, John Allison, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, Balazs Ujvari, H. A. Neal, Gordon H. Hanson, and M. Ford
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, 01 natural sciences, Lepton number, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Lepton, Event generator, Bhabha scattering, Boson
Abstract: A search for single production of doubly-charged Higgs bosons has been performed using 600.7 pb^-1 of e+e- collision data with sqrt(s)=189--209GeV collected by the OPAL detector at LEP. No evidence for the existence of H++/-- is observed. Upper limits on the Yukawa coupling of the H++/-- to like-signed electron pairs are derived. Additionally, indirect constraints on the Yukawa coupling from Bhabha scattering, where the H++/-- would contribute via t-channel exchange, are derived for M(H++/--) < 2TeV. These are the first results for both a single production search and constraints from Bhabha scattering reported from LEP., 20 pages, 9 figures, Submitted to Phys. Lett. B
Published: 2003
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21. Search for stable and long-lived massive charged particles in e+e− collisions at =130209 GeV

Author: D. Axen, Oana Elena Vickey Boeriu, James Pinfold, W. J. McDonald, R. Seuster, C. F. Vollmer, F. Spano, Gideon Bella, H. J. Burckhart, Peter Sherwood, B. C. Shen, Jochen Schieck, P. Mättig, Shoji Asai, R. J. Barlow, J. Ludwig, K. Runge, P. Bock, A. D. Schaile, Gabriella Pasztor, G. P. Siroli, Daniel Lellouch, Christoph Schwick, M. Donkers, Takehiko Mori, A. Okpara, Siegfried Bethke, P. Vannerem, P. F. Åkesson, W. G. Scott, D. E. Plane, C. P. Ward, P. Tran, C. Hensel, S. Söldner-Rembold, J. W. Gary, H. Mes, Alexander Oh, Kiyotomo Kawagoe, J. Goldberg, L. L. Kormos, T. Behnke, Oliver Pooth, K. Hoffman, John Allison, I. Nakamura, H. Landsman, S. Yamashita, P. Igo-Kemenes, Ehud Duchovni, A. Leins, D. Lanske, I. P. Duerdoth, S. Braibant, Dave Charlton, A. J. Martin, W. Menges, Otmar Biebel, P. Gagnon, L. Brigliadori, R. K. Keeler, Guenter Duckeck, K. Ishii, H. Jeremie, Marek Tasevsky, Dezso Horvath, E. Torrence, A. Gupta, A. Csilling, Graham Wilson, M. Gruwé, N. K. Watson, Zoltan Laszlo Trocsanyi, Dong Hee Kim, Yoram Rozen, Shlomo Dado, Arnulf Quadt, W. Mader, P. M. Watkins, R. D. Heuer, Richard Nisius, D. Toya, A. Michelini, Tara Shears, R. G. Kellogg, E. L. Barberio, K. Harder, O. Schaile, T. Kuhl, T. Kobayashi, Christoph Rembser, Richard J. K. Taylor, Erez Etzion, Giora Mikenberg, R. J. Batley, Csaba Hajdu, Marco Cuffiani, Junichi Kanzaki, J. Polok, Stefano Marcellini, S. Campana, P. Renkel, R. M. Brown, Stefan Kluth, K. Buesser, G. Gaycken, C. Ainsley, Lorne Levinson, Silvia Arcelli, Shlomit Tarem, James Letts, P. J. Bell, M. A. Thomson, S. W. O'Neale, R. J. Hemingway, I. R. Bailey, Georges Azuelos, M. Schumacher, E. Tsur, E. K. U. Gross, J. Lillich, C. M. Hawkes, P. O. Günther, B. W. Kennedy, E. A. De Wolf, M. Giunta, P. Jovanovic, Isabel Marian Trigger, K. W. Bell, Norbert Wermes, Peter Krieger, T. Kawamoto, Gideon Alexander, Gordon H. Hanson, Gunter Wolf, H. Nanjo, P. Amaral, J. C. Hill, Tobias Kramer, Richard Teuscher, M. Ford, J. M. Roney, K. J. Anderson, C. Pahl, D. Karlen, Koichi Nagai, S. Orito, W. Mohr, Raimund Ströhmer, Klaus Rabbertz, B. Poli, Stephen Lloyd, T. R. Wyatt, George Lafferty, Satoshi Mihara, M. J. Oreglia, Katja Klein, K. Sachs, Philip Bechtle, L. Zivkovic, D. Zer-Zion, J. R. Carter, G. N. Patrick, F. K. Loebinger, Ivor Fleck, Frank Fiedler, K. Stephens, N. Kanaya, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, Beatrix Dienes, Balazs Ujvari, H. A. Neal, M. Boutemeur, F. S. Merritt, Gianni Masetti, C. Y. Chang, D. R. Ward, J. A. McKenna, S. Moed, Christoph Geich-Gimbel, J. Grunhaus, A. Fürtjes, Lutz Feld, M. Hamann, Sachio Komamiya, R. J. Sobie, Thorsten Wengler, Joost Vossebeld, B. Caron, D. Waller, K. Kruger, T. Saeki, Klaus Desch, Gabriele Benelli, P. Scharff-Hansen, A. M. Smith, Andris Skuja, Tetsuro Mashimo, M. F. Turner-Watson, A. Macpherson, T. R. Junk, A. Mutter, M. Kupper, P. S. Wells, M. Hauschild, A. T. Watson, Matthias Schröder, T. J. McMahon, Achim Stahl, D. J. Miller, J. Dubbert, Robert Vertesi, R. K. Carnegie, S. Rosati, J. A. Wilson, Gregor Herten, Robert McPherson, G. Karapetian, A. Harel, T. Schörner-Sadenius, Alain Bellerive, Ikuo Ueda, D. M. Strom, J. Lu, Fabrizio Fabbri, A. Frey, J. E. Pilcher, M. Przybycień, A. A. Carter, M. Verzocchi, G. Anagnostou, Paolo Giacomelli, Giovanni Abbiendi, J. von Krogh, M. Harin-Dirac, R. J. Hawkings, D. Wetterling, Pamela Ferrari, J. G. Layter, H. Voss, G. Giacomelli, A. De Roeck, M. Kobel, and Frans Meijers
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Muon, 010308 nuclear & particles physics, Scalar (mathematics), Supersymmetry, 01 natural sciences, Electric charge, Charged particle, Nuclear physics, Chargino, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Lepton
Abstract: A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e+e- collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge +-1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right (left)- handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge +-2/3, +-4/3, and +-5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10-6s. A search for stable and long-lived massive particles of electric charge | Q / e |=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e + e − collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge ±1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right- (left-)handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge ±2/3, ±4/3 and ±5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10 −6 s. A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e+e- collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge +-1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right (left)- handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV. For particles with fractional charge +-2/3, +-4/3, and +-5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10-6s.
Published: 2003

22. Search for nearly mass-degenerate charginos and neutralinos at LEP

Author: Gordon H. Hanson, M. Ford, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, Oliver Pooth, A. Klier, John Allison, Balazs Ujvari, H. A. Neal, Daniele Bonacorsi, Gideon Bella, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, James Letts, Sachio Komamiya, Graham Wilson, Daniel Lellouch, D. Krop, M. A. Thomson, S. Campana, Raimund Ströhmer, Christoph Geich-Gimbel, S. Yamashita, D. E. Plane, Takehiko Mori, A. Okpara, P. J. Bell, K. Hoffman, A. Leins, N. K. Watson, J. Goldberg, D. Waller, K. Kruger, T. Saeki, H. J. Burckhart, P. Igo-Kemenes, H. Mes, I. P. Duerdoth, E. K. U. Gross, Shlomo Dado, C. F. Vollmer, K. Ishii, H. Jeremie, L. L. Kormos, P. Gagnon, S. Braibant, G. M. Dallavalle, Jochen Schieck, Vakhtang Kartvelishvili, P. Tran, J. von Krogh, A. Fürtjes, A. J. Martin, R. J. Barlow, Beatrix Dienes, A. Mutter, C. Ainsley, P. Scharff-Hansen, K. Stephens, O. Sahr, Lutz Feld, Zoltan Laszlo Trocsanyi, N. Kanaya, M. J. Oreglia, Dong Hee Kim, D. Toya, R. J. Hawkings, J. Hauschildt, P. Hüntemeyer, I. K. Klein, Gianni Masetti, O. Schaile, Christoph Rembser, C. Y. Chang, Richard Teuscher, M. Boutemeur, F. S. Merritt, D. Wetterling, D. J. Miller, Giora Mikenberg, A. M. Smith, J. Grunhaus, S. Moed, R. J. Batley, Paolo Giacomelli, Richard J. K. Taylor, P. F. Åkesson, W. Mader, S.J. Dallison, L. Zivkovic, H. Voss, Erez Etzion, G. Gaycken, S. Spagnolo, J. A. McKenna, M. Harin-Dirac, M. Schumacher, J. R. Carter, Stefan Kluth, Matthias Schröder, R. J. Homer, James Pinfold, R. Seuster, Shlomit Tarem, A. D. Schaile, Gabriella Pasztor, G. N. Patrick, D. R. Ward, R. J. Hemingway, M. Gruwé, W. Menges, Otmar Biebel, P. Vannerem, L. Brigliadori, J. Lillich, C. Hensel, G. Giacomelli, Satoshi Mihara, M. Przybycień, E. A. De Wolf, B. W. Kennedy, T. Kress, M. Giunta, E. Torrence, Achim Stahl, P. Mättig, P. Jovanovic, A. De Roeck, M. Kobel, A. A. Carter, T. Behnke, Shoji Asai, Gideon Alexander, B. Poli, S. W. O'Neale, P. Amaral, A. Gupta, Georges Azuelos, Peter Krieger, R. V. Kowalewski, Richard Nisius, Alexander Oh, Frank Fiedler, I. J. Bloodworth, P. O. Günther, E. Tsur, C. M. Hawkes, T. Schörner-Sadenius, C. P. Ward, Gunter Wolf, Isabel Marian Trigger, K. W. Bell, Andris Skuja, D. Lanske, Marco Cuffiani, M. Verzocchi, J. C. Hill, Tara Shears, Tetsuro Mashimo, S. Söldner-Rembold, Giovanni Abbiendi, D. Axen, K. J. Anderson, Tobias Kramer, W. J. McDonald, B. C. Shen, M. F. Turner-Watson, Frans Meijers, A. Macpherson, Yoram Rozen, Norbert Wermes, H. Landsman, T. Kawamoto, Oana Elena Vickey Boeriu, M. Donkers, Siegfried Bethke, C. H. Shepherd-Themistocleous, W. G. Scott, T. J. McMahon, F. Spano, I. Nakamura, M. Kupper, J. W. Gary, S. Orito, Peter Sherwood, J. Dubbert, R. K. Carnegie, P. Mendez-Lorenzo, Marek Tasevsky, Dezso Horvath, Thomas E Marchant, Guenter Duckeck, E. L. Barberio, J. A. Wilson, J. Ludwig, K. Harder, K. Runge, P. Bock, Dave Charlton, J. M. Roney, Thorsten Wengler, K. Sachs, B. Caron, Pamela Ferrari, J. G. Layter, G. Karapetian, Philip Bechtle, Junichi Kanzaki, J. Polok, D. Karlen, Ehud Duchovni, Koichi Nagai, W. Mohr, R. M. Brown, Lorne Levinson, K. Buesser, Gabriele Benelli, T. R. Junk, R. D. Heuer, A. Michelini, I. R. Bailey, P. S. Wells, T. Kobayashi, M. Hauschild, Terry Richard Wyatt, A. T. Watson, Klaus Rabbertz, Stephen Lloyd, J. P. Martin, Gregor Herten, Alain Bellerive, M. Hamann, J. E. Pilcher, Richard Keeler, G. Anagnostou, R. J. Sobie, Joost Vossebeld, Klaus Desch, R. Howard, A. Tricoli, Robert McPherson, S. Rosati, Arnulf Quadt, Fabrizio Fabbri, A. Frey, E. Elfgren, A. Harel, Ikuo Ueda, D. M. Strom, P. M. Watkins, J. Lu, H. Rick, G. P. Siroli, Christoph Schwick, P. Renkel, Silvia Arcelli, A. Csilling, C. Pahl, G. D. Lafferty, B. Vachon, Kiyotomo Kawagoe, T. Trefzger, Opal, Collaboration, G., Abbiendi, and Spagnolo, Stefania Antonia
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Superpartner, 01 natural sciences, Supersymmetry breaking, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Chargino, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment, Minimal Supersymmetric Standard Model, Bhabha scattering, Event generator
Abstract: A search was performed for charginos with masses close to the mass of the lightest neutralino in e+e- collisions at centre-of-mass energies of 189-209 GeV recorded by the OPAL detector at LEP. Events were selected if they had an observed high-energy photon from initial state radiation, reducing the dominant background from two-photon scattering to a negligible level. No significant excess over Standard Model expectations has been observed in the analysed data set corresponding to an integrated luminosity of 570pb-1. Upper limits were derived on the chargino pair-productin cross-section, and lower limits on the chargino mass were derived in the context of the Minimal Supersymmetric Extension of the Standard Model for the gravity and anomaly mediated Supersymmetry breaking scenarios., 26 pages, 9 figures
Published: 2003

23. Measurement of the branching ratio for →τ decays

Author: J. Letts, A. Leins, Shlomo Dado, K. Graham, Tara Shears, P. Gagnon, D. Toya, A. W. Lloyd, C. Pahl, Paolo Giacomelli, M. Hauschild, Giora Mikenberg, G. D. Lafferty, J. Allison, Zoltan Laszlo Trocsanyi, M. Harin-Dirac, C. H. Shepherd-Themistocleous, Kiyotomo Kawagoe, Dong Hee Kim, R. J. Homer, I. J. Bloodworth, A. K. Honma, O. Runolfsson, Gideon Bella, Claudio Grandi, J. S. White, Claudia Schmitt, W. J. McDonald, B. C. Shen, David Futyan, Yoram Rozen, H. J. Burckhart, D. J. Miller, M. Donkers, Naoko Kanaya, Siegfried Bethke, Alexander Oh, S. Yamashita, P. Igo-Kemenes, M. A. Thomson, P. F. Åkesson, D. Lanske, G. W. Wilson, Junichi Kanzaki, P. G. Estabrooks, R. K. Keeler, G. Gaycken, Gregor Herten, W. G. Scott, J. Polok, D. Karlen, T. Trefzger, S. Spagnolo, K. Ishii, H. Jeremie, S. D. Talbot, C. Hensel, Daniel Lellouch, I. Nakamura, Richard J. K. Taylor, T. Behnke, Takehiko Mori, C. R. Jones, A. Okpara, J. W. Gary, Arnulf Quadt, P. M. Watkins, C. F. Vollmer, T. R. Wyatt, R. J. Barlow, H. Landsman, J. E. Pilcher, Erez Etzion, K. R. Hossain, P. Mättig, D. Zer-Zion, O. Schaile, M. Verzocchi, A. J. Martin, Christoph Geich-Gimbel, P. Mendez-Lorenzo, Thorsten Wengler, Stefan Kluth, Shlomit Tarem, B. Caron, D. Axen, P. Renkel, A. Jawahery, Oana Elena Vickey Boeriu, D. Glenzinski, Marek Tasevsky, F. G. Oakham, A. D. Schaile, Gabriella Pasztor, Dezso Horvath, M. J. Losty, E. L. Barberio, F. Spano, Peter Sherwood, A. Macchiolo, J. Couchman, W. Mader, F. Odorici, T. Kress, B. Surrow, A. A. Carter, P. Vannerem, G. A. Snow, C. P. Ward, J. Ludwig, K. Runge, P. Bock, G. Benelli, L. Brigliadori, Shoji Asai, E. A. De Wolf, S. Rosati, Sachio Komamiya, Giovanni Abbiendi, M. J. Oreglia, A. Csilling, S. Söldner-Rembold, Dave Charlton, J. G. Layter, S. W. O'Neale, K. Hoffman, A. Harel, S.J. Dallison, T. P. Kokott, D. Waller, P. O. Günther, T. Saeki, Rolf Seuster, M. Gruwé, G. N. Patrick, P. E.L. Clarke, Ikuo Ueda, D. M. Strom, K. J. Anderson, V. Kartvelishvili, J. P. Martin, T. Kuhl, R. D. Heuer, Richard Nisius, W. Menges, Achim Stahl, J. Lu, Satoshi Mihara, Guenter Duckeck, H. Rick, C. Y. Chang, Marco Cuffiani, M. Ford, G. Anagnostou, Katja Klein, L. Stumpf, H. Voss, H. Mes, I. P. Duerdoth, S. Braibant, K. Sachs, J. R. Carter, Norbert Wermes, Sherry Towers, T. Kawamoto, G. G. Hanson, N. K. Watson, G. Giacomelli, J. Grunhaus, S. Orito, G. P. Siroli, I. Lawson, Frank Fiedler, A. De Roeck, M. Kobel, Christoph Schwick, J. Böhme, M. S. Dixit, T. R. Junk, Raimund Ströhmer, Richard Teuscher, Frans Meijers, Juergen Thomas, Matthias Schröder, P. S. Wells, T. Kämer, C. Ainsley, P. Hüntemeyer, A. T. Watson, Andris Skuja, A. M. Rossi, Georges Azuelos, B. Vachon, O. Sahr, E. Tsur, C. M. Hawkes, R. Liebisch, Isabel Marian Trigger, K. W. Bell, A. Macpherson, R. J. Hemingway, Tetsuro Mashimo, R. Kowalewski, J. C. Hill, J. Lillich, M. F. Turner-Watson, Beatrix Dienes, Paul Kyberd, F. K. Loebinger, B. W. Kennedy, R. J. Sobie, Joost Vossebeld, P. Jovanovic, E. Torrence, Austin Ball, S. Arcelli, Klaus Desch, R. Howard, Peter Krieger, Alessandro Montanari, M. Kupper, K. Stephens, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, H. A. Neal, Alain Bellerive, N. L. Rodning, Thomas E Marchant, C. Littlewood, P. Dervan, B. Poli, P. Scharff-Hansen, A. M. Smith, Daniele Bonacorsi, D. Krop, J. von Krogh, Gideon Alexander, James Pinfold, R. J. Hawkings, Oliver Pooth, D. Wetterling, Paolo Capiluppi, T. J. McMahon, J. Dubbert, R. K. Carnegie, M. Schumacher, Richard Batley, V. Zacek, J. A. Wilson, D. R. Ward, G. Karapetian, R. G. Kellogg, C. Sbarra, Csaba Hajdu, Stefano Marcellini, J. Goldberg, I. Cohen, Christoph Rembser, A. Fürtjes, Lutz Feld, M. Fanti, Ehud Duchovni, M. Boutemeur, F. S. Merritt, J. A. McKenna, A. Michelini, Robert McPherson, T. Kobayashi, Fabrizio Fabbri, A. Frey, J. Cammin, K. Harder, R. M. Brown, Lorne Levinson, G. D. Long, I. R. Bailey, Klaus Rabbertz, Stephen Lloyd, O. Biebel, D. R. Rust, D. E. Plane, G. M. Dallavalle, K. Roscoe, A. Gupta, E. Clay, J. M. Roney, Koichi Nagai, W. Mohr, P. Ferrari, German Martinez, E. K. U. Gross, and M. Sproston
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Exponential decay, Nuclear Experiment, 010306 general physics
Abstract: Using about 3.9 million hadronic Z decays from e + e − collisions recorded by the OPAL detector at LEP at centre-of-mass energies s ≈M Z , the branching ratio for the decay D − s →τ − ν τ has been measured to be BR ( D − s →τ − ν τ )=(7.0±2.1( stat )±2.0( syst ))%. This result can be used to derive the decay constant of the D − s meson: f D s =(286±44( stat )±41( syst )) MeV .
Published: 2001

24. Search for anomalous production of acoplanar di-lepton events in ${\rm e^+e^-}$ collisions at $\sqrt{s} =$ 183 and 189 GeV

Author: P. Ferrari, Randall Sobie, H. Mes, Naoko Kanaya, R. J. Hemingway, G. D. Lafferty, I. P. Duerdoth, S. Braibant, J. Lillich, Christopher Hawkes, German Martinez, K. Stephens, H. O. Ogren, B. W. Kennedy, P. Jovanovic, C. Littlewood, Christoph Geich-Gimbel, Gideon Bella, K. Stoll, Andris Skuja, S. Petzold, Austin Ball, Guenter Duckeck, A. A. Faust, P. Hüntemeyer, Daniel Lellouch, L. Brigliadori, H. J. Burckhart, Jacqueline Batley, Peter R Hobson, D. Zer-Zion, Takehiko Mori, Peter Krieger, Vakhtang Kartvelishvili, Tetsuro Mashimo, S. W. O'Neale, M. F. Turner-Watson, K. J. Anderson, Sachio Komamiya, A. Okpara, P. Mättig, T. J. McMahon, Richard Teuscher, R. Kowalewski, Erez Etzion, M. A. Thomson, A. T. Watson, Matthias Schröder, D. E. Plane, F. Fiedler, M. Thiergen, J. E. Conboy, A. Fürtjes, S. Arcelli, Alessandro Montanari, I. Meyer, C. Couyoumtzelis, T. P. Kokott, J. Dubbert, D. Waller, E. K. U. Gross, M. Verzocchi, W. Gorn, R. K. Carnegie, Shlomit Tarem, Lutz Feld, R. Van Kooten, T. Saeki, G. M. Dallavalle, Alessandra Fanfani, R. Davis, G. Gaycken, P. G. Bright-Thomas, J. A. Wilson, M. Sproston, C. R. Jones, J. Böhme, B. Surrow, M. Schumacher, M. Boutemeur, F. S. Merritt, Gideon Alexander, Thomas E Marchant, Paolo Capiluppi, Michael Hildreth, Achim Stahl, I. Trigger, Stefan Schmitt, Alain Bellerive, M. Kolrep, N. L. Rodning, T. Kuhl, Paul Kyberd, F. K. Loebinger, P. Dervan, S. Yamashita, P. Scharff-Hansen, B. Poli, F. Odorici, K. Graham, F. Wäckerle, D. R. Ward, Tara Shears, H. Voss, R. J. Barlow, Georges Azuelos, Ivor Fleck, Richard Nisius, B. List, Ekg Sarkisyan, D. M. Gingrich, P. Igo-Kemenes, E. Tsur, Ehud Duchovni, D. Axen, A. Jawahery, Oana Elena Vickey Boeriu, J. Grunhaus, J. Bechtluft, J. A. McKenna, D. J. Miller, Joleen Pater, K. W. Bell, J. Goldberg, Dave Charlton, Marco Cuffiani, K. Ishii, H. Jeremie, S. B. Anderson, Shoji Asai, M. Jimack, A. M. Smith, K. Hoffman, A. Klier, A. Michelini, Juergen Thomas, M. Przybycień, H. A. Neal, M. Fanti, T. Kress, J. C. Hill, J. M. Roney, S. Spagnolo, A. M. Rossi, W. R. Gibson, W. J. McDonald, B. C. Shen, A. A. Carter, I. J. Bloodworth, M. Donkers, Kiyotomo Kawagoe, K. Harder, Siegfried Bethke, D. Liu, A. K. Honma, Robert McPherson, Paolo Giacomelli, T. Kobayashi, Stan Bentvelsen, O. Schaile, M. Hansroul, Koichi Nagai, John Allison, W. G. Scott, J. Schieck, R. Hawkings, I. Nakamura, H. Landsman, Peter Sherwood, I. Cohen, R. D. Heuer, Christoph Rembser, James Pinfold, S. Robertson, Yoram Rozen, W. Mohr, Fabrizio Fabbri, A. Frey, R. Perez-Ochoa, R. Seuster, Giovanni Abbiendi, A. J. Martin, Claudia Ciocca, M. Harin-Dirac, S. A. Robins, R. L. Coxe, T. Trefzger, R. J. Homer, R. G. Kellogg, Junichi Kanzaki, J. Polok, R. M. Brown, D. Karlen, D. R. Rust, P. Mendez-Lorenzo, F. G. Oakham, R. Liebisch, K. Ackerstaff, Alexander Wagner, A. Macchiolo, J. Ludwig, A. Hocker, Daniele Bonacorsi, K. Runge, P. Bock, Lorne Levinson, Csaba Hajdu, D. Glenzinski, Dezso Horvath, M. J. Losty, Stefano Marcellini, E. L. Barberio, D. Chrisman, G. D. Long, V. Zacek, K. R. Hossain, W. M. Sang, J. Couchman, W. Mader, O. C. Cooke, P. Pfeifenschneider, J. W. Gary, Marcello Mannelli, C. K. Hargrove, Stephen Lloyd, J. Patt, D. C. Imrie, André Schöning, C. H. Shepherd-Themistocleous, J. von Krogh, O. Sahr, C. Sbarra, F. R. Jacob, G. P. Siroli, M. Gruwé, D. Wetterling, Christoph Schwick, K. Roscoe, P. Gagnon, S. Baumann, E. Torrence, Zoltan Laszlo Trocsanyi, E. Clay, Dong Hee Kim, J. Lauber, E. A. Mckigney, S. D. Talbot, T. Behnke, Satoshi Mihara, T. R. Junk, D. Lanske, D. I. Futyan, P. S. Wells, Terry Richard Wyatt, O. Runolfsson, P. G. Estabrooks, R. K. Keeler, N. K. Watson, Arnulf Quadt, P. M. Watkins, Claudio Grandi, J. S. White, M. Fierro, S. Rosati, A. Harel, Ikuo Ueda, D. M. Strom, A. D. Schaile, Gabriella Pasztor, J. Lu, P. Vannerem, G. A. Snow, C. P. Ward, Raimund Ströhmer, S. Söldner-Rembold, P. Poffenberger, Beatrix Dienes, J. Letts, C. Y. Chang, P. Taras, A. Macpherson, K. Sachs, Shlomo Dado, Giora Mikenberg, Klaus Desch, S. F. Ashby, R. Howard, Otmar Biebel, P. I. Kayal, Norbert Wermes, Sherry Towers, T. Kawamoto, S. Orito, S. Betts, M. Hapke, M. J. Oreglia, Gregor Herten, J. E. Pilcher, A. W. Lloyd, G. W. Wilson, M. Hauschild, S.J. Dallison, J. R. Carter, G. N. Patrick, A. Biguzzi, J. G. Layter, P. E.L. Clarke, J. P. Martin, S. De Jong, H. Rick, G. G. Hanson, G. Giacomelli, I. Lawson, A. De Roeck, M. Kobel, M. S. Dixit, and Frans Meijers
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Standard Model, Nuclear physics, Chargino, Neutralino, Higgs boson, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Minimal Supersymmetric Standard Model, Lepton
Abstract: A selection of di-lepton events with significant missing transverse momentum has been performed using a total data sample of 237.4 pb-1 at e+e- centre-of-rnass energies of approximately 183 GeV and 189 GeV. The observed numbers of events - 78 at 183 GeV and 301 at 189 GeV - are consistent with the numbers expected from Standard Model processes, which arise predominantly from W+W- production with both W bosons decaying leptonically. This topology is also an experimental signature for the pair production of new particles that decay to a charged lepton accompanied by one or more invisible particles. Discrimination techniques are described that optimise the sensitivity to particular new physics channels. No evidence for new phenomena is apparent. Upper limits on the production cross-section times branching ratio squared for sleptons and for leptonically decaying charginos and charged Higgs are presented in a manner intended to minimise the number of model assumptions. Assuming a 100% branching ratio for the decay l±R → l±χ01, where χ01 is the lightest neutralino, we exclude at 95% CL: right-handed smuons with masses below 82.3 GeV for mμ- - mχ01 > 3 GeV and right-handed staus with masses below 81.0 GeV for mτ- -mχ01 > 8 GeV. Right-handed selectrons are excluded at 95% CL for masses below 87.1 GeV for mẽ - mχ01 > 5 GeV, within the framework of the Minimal Supersymmetric Standard Model assuming μ, < - 100 GeV and tan β= 1.5. Charged Higgs bosons, H±, are excluded at 95% CL for masses below 82.8 GeV, assuming a 100% branching ratio for the decay H± → τ ± vτ.
Published: 2000

25. A study of $\mathrm{B_s^0}$ meson oscillation using hadronic $\mathrm Z^0$ decays containing leptons

Author: H. O. Ogren, Erez Etzion, Christoph Geich-Gimbel, Shlomit Tarem, Sachio Komamiya, D. Axen, S. Yamashita, A. T. Watson, A. Jawahery, B. Surrow, Richard Teuscher, P. Igo-Kemenes, Vakhtang Kartvelishvili, F. Fiedler, A. Biguzzi, J. E. Conboy, A. Fürtjes, J. G. Layter, K. Ishii, H. Jeremie, Peter Sherwood, Daniele Bonacorsi, J. von Krogh, M. Gruwé, D. Wetterling, T. P. Kokott, T. Saeki, Lutz Feld, Kiyotomo Kawagoe, O. C. Cooke, Alexander Wagner, A. Macchiolo, W. R. Gibson, P. Pfeifenschneider, T. J. McMahon, C. Couyoumtzelis, S. Betts, A. Macpherson, J. Dubbert, J. Ludwig, M. Hapke, K. Harder, S. A. Robins, R. Liebisch, K. Ackerstaff, J. Letts, R. K. Carnegie, G. Gaycken, P. G. Bright-Thomas, J. A. Wilson, J. Böhme, Raimund Ströhmer, M. Kolrep, Alessandra Fanfani, R. Davis, S. Baumann, K. Runge, P. Bock, M. Przybycień, T. Kress, E. A. Mckigney, A. A. Carter, I. J. Bloodworth, J. Patt, André Schöning, O. Schaile, W. J. McDonald, Giovanni Abbiendi, M. Schumacher, Matthias Schröder, B. C. Shen, R. J. Hemingway, M. A. Thomson, J. Lauber, M. Boutemeur, F. S. Merritt, O. Sahr, Klaus Desch, P. E.L. Clarke, R. Howard, S. Robertson, P. Poffenberger, Siegfried Bethke, D. Liu, A. K. Honma, K. R. Hossain, C. H. Shepherd-Themistocleous, K. Sachs, Christopher Hawkes, W. M. Sang, S. B. Anderson, Shlomo Dado, J. Grunhaus, E. K. U. Gross, R. L. Coxe, M. Thiergen, F. Odorici, W. G. Scott, Yoram Rozen, J. P. Martin, B. W. Kennedy, T. Kuhl, S. De Jong, I. Nakamura, Richard Nisius, J. Goldberg, J. Bechtluft, M. Sproston, P. Jovanovic, M. J. Oreglia, Stan Bentvelsen, Austin Ball, K. Stoll, S. D. Talbot, R. M. Brown, Lorne Levinson, Andris Skuja, Peter Krieger, B. List, H. Rick, Marco Cuffiani, P. Mendez-Lorenzo, Junichi Kanzaki, J. Polok, D. I. Futyan, Gregor Herten, K. Hoffman, Giora Mikenberg, S. F. Ashby, D. Glenzinski, Paolo Giacomelli, D. Karlen, T. Behnke, R. D. Heuer, Alessandro Montanari, Daniel Lellouch, T. R. Junk, P. S. Wells, M. Hansroul, Beatrix Dienes, A. Hocker, J. A. McKenna, I. Cohen, S. Petzold, Juergen Thomas, Tetsuro Mashimo, M. F. Turner-Watson, A. D. Schaile, Randall Sobie, G. D. Lafferty, R. Hawkings, Christoph Rembser, Dezso Horvath, M. J. Losty, Takehiko Mori, A. Okpara, Terry Richard Wyatt, P. Mättig, G. D. Long, G. G. Hanson, C. Y. Chang, Gabriella Pasztor, P. Gagnon, H. Landsman, J. M. Roney, M. Verzocchi, J. E. Pilcher, H. Mes, P. G. Estabrooks, R. K. Keeler, N. K. Watson, M. Harin-Dirac, P. Vannerem, G. A. Snow, C. P. Ward, D. C. Imrie, R. J. Homer, G. Giacomelli, I. Lawson, A. De Roeck, M. Kobel, Arnulf Quadt, Naoko Kanaya, P. M. Watkins, Guenter Duckeck, A. Sittler, Zoltan Laszlo Trocsanyi, I. P. Duerdoth, S. Braibant, F. G. Oakham, P. Taras, Dong Hee Kim, Koichi Nagai, J. Schieck, C. Sbarra, F. R. Jacob, Stefan Schmitt, G. P. Siroli, S. Söldner-Rembold, W. Gorn, J. R. Carter, G. N. Patrick, E. L. Barberio, A. J. Martin, M. S. Dixit, Stephen Lloyd, Frans Meijers, Satoshi Mihara, P. Hüntemeyer, Christoph Schwick, K. Roscoe, W. Mohr, John Allison, Otmar Biebel, Georges Azuelos, E. Tsur, Shoji Asai, P. Scharff-Hansen, A. A. Faust, Achim Stahl, O. Runolfsson, K. W. Bell, N. Altekamp, H. Voss, A. W. Lloyd, E. Torrence, R. J. Barlow, D. J. Miller, J. Couchman, W. Mader, Ehud Duchovni, A. M. Smith, R. G. Kellogg, K. Stephens, J. C. Hill, E. Clay, C. K. Hargrove, K. Graham, G. W. Wilson, M. Jimack, Csaba Hajdu, S. Spagnolo, C. Littlewood, Tara Shears, P. I. Kayal, Claudio Grandi, J. S. White, Stefano Marcellini, M. Hauschild, German Martinez, Ekg Sarkisyan, James Pinfold, L. Brigliadori, R. Perez-Ochoa, R. Seuster, V. Gibson, A. Michelini, Norbert Wermes, Sherry Towers, D. E. Plane, T. Kawamoto, D. Lanske, V. Zacek, Paul Kyberd, F. K. Loebinger, I. Trigger, T. Kobayashi, J. W. Gary, J. Steuerer, Ivor Fleck, D. R. Ward, S. Orito, G. M. Dallavalle, Marcello Mannelli, Joleen Pater, A. Klier, H. A. Neal, M. Fierro, R. Kowalewski, S. W. O'Neale, S. Arcelli, K. J. Anderson, Gideon Alexander, Paolo Capiluppi, Gideon Bella, H. J. Burckhart, Jacqueline Batley, C. R. Jones, M. Fanti, Peter R Hobson, D. Zer-Zion, Robert McPherson, Fabrizio Fabbri, A. Frey, R. Van Kooten, Claudia Ciocca, F. Wäckerle, D. M. Gingrich, A. M. Rossi, Michael Hildreth, Alain Bellerive, N. L. Rodning, P. Dervan, B. Poli, D. R. Rust, S. Rosati, A. Harel, Ikuo Ueda, D. M. Strom, and J. Lu
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Oscillation, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Charge (physics), Jet (particle physics), Nuclear physics, High Energy Physics::Experiment, Production (computer science), Engineering (miscellaneous), Lepton
Abstract: A sample of ${\rm Z}^0$ decays containing b-flavoured hadrons is tagged using leptons, and events having precise proper time measurements are selected. These events are used to study ${\rm B}^0_{\rm s}$ oscillations. The flavour (b or $\rm \bar{b}$) at decay is determined from the lepton charge while the flavour at production is determined from jet charge or the charge of a second lepton, where available. The experiment was not able to resolve the oscillatory behaviour, and we deduce that the ${\rm B}^0_{\rm s}$ oscillation frequency $\Delta m_{\rm s} > 5.2$ ps$^{-1}$ at the 95% confidence level.
Published: 1999

26. Extracting SUSY parameters from LHC measurements using Fittino

Author: Klaus Desch
Subjects: Physics, Particle physics, Large Hadron Collider, Supersymmetry
Published: 2010

27. Extracting SUSY parameters from LHC measurements using Fittino

Author: Philip Bechtle, Klaus Desch, Mathias Uhlenbrock, Peter Wienemann, George Alverson, Pran Nath, and Brent Nelson
Subjects: Physics, Particle physics, Luminosity (scattering theory), Large Hadron Collider, High Energy Physics::Phenomenology, FOS: Physical sciences, Function (mathematics), Supersymmetry, High Energy Physics - Phenomenology, High Energy Physics::Theory, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Experiment, Point (geometry), Mass scale, Projection (set theory)
Abstract: We show that presently available precision data are in good agreement with supersymmetry at a mass scale below 1 TeV. Using a SUSY point close to the best fit to present data, we give a projection of the capabilities of the LHC to constrain SUSY models and their parameters as function of the accumulated luminosity., 4 pages, contribution to the proceedings of the 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY09), Northeastern University, Boston, MA, USA, June 2009
Published: 2010

28. Constraining SUSY models with Fittino using measurements before, with and beyond the LHC

Author: Klaus Desch, Philip Bechtle, Mathias Uhlenbrock, and Peter Wienemann
Subjects: Physics, Particle physics, Muon, Large Hadron Collider, Physics and Astronomy (miscellaneous), Anomalous magnetic dipole moment, Supergravity, High Energy Physics::Phenomenology, FOS: Physical sciences, Supersymmetry, law.invention, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), law, Point (geometry), High Energy Physics::Experiment, Collider, Engineering (miscellaneous), Order of magnitude
Abstract: We investigate the constraints on Supersymmetry arising from available precision measurements using a global fit approach. When interpreted within minimal supergravity (mSUGRA), the data provide significant constraints on the masses of supersymmetric particles, which are predicted to be light enough for an early discovery at the Large Hadron Collider (LHC). We provide predicted mass spectra including, for the first time, full uncertainty bands. The most stringent constraint is from the measurement of the anomalous magnetic moment of the muon. Using the results of these fits, we investigate to which precision mSUGRA and more general MSSM parameters can be measured by the LHC experiments with three different integrated luminosities for a parameter point which approximately lies in the region preferred by current data. The impact of the already available measurements on these precisions, when combined with LHC data, is also studied. We develop a method to treat ambiguities arising from different interpretations of the data within one model and provide a way to differentiate between values of different digital parameters of a model. Finally, we show how measurements at a linear collider with up to 1 TeV centre-of-mass energy will help to improve precision by an order of magnitude., Comment: submitted to EPJ C
Published: 2009
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29. Sigma-antihyperon correlations in Z0 decay and investigation of the baryon production mechanism

Author: G. W. Wilson, M. Schumacher, M. Hauschild, Teresa Barillari, W. Menges, Otmar Biebel, E. A. De Wolf, Oliver Pooth, J. Grunhaus, L. Zivkovic, B. Dienes, J. A. McKenna, P. Mättig, Shoji Asai, Norbert Wermes, T. Kawamoto, S. Orito, M. Dallavalle, H. Landsman, E. L. Barberio, R. G. Kellogg, Attila Krasznahorkay, H. Mes, I. P. Duerdoth, J. Lillich, J. M. Roney, B. W. Kennedy, P. Jovanovic, Peter Krieger, A. J. Martin, A. Harel, Thorsten Wengler, Dave Charlton, Csaba Hajdu, Stefano Marcellini, James Letts, N. K. Watson, Daniel Lellouch, Guenter Duckeck, Ikuo Ueda, D. M. Strom, D. J. Miller, J. Lu, D. Axen, Christoph Geich-Gimbel, Oana Elena Vickey Boeriu, Koichi Nagai, K. Ishii, H. Jeremie, Takehiko Mori, G. Mikenberg, W. Mader, Sachio Komamiya, M. Gruwe, F. Spano, W. Mohr, Peter Sherwood, Tara Shears, R. J. Batley, Gabriele Benelli, Robert McPherson, P. Scharff-Hansen, R. D. Heuer, C. Ainsley, M. J. Oreglia, S. Braibant, Gordon H. Hanson, E. Tsur, C. M. Hawkes, O. Schaile, C. F. Vollmer, Richard Teuscher, J. Ludwig, K. Runge, P. Bock, T. Saeki, T. Kuhl, A. M. Rossi, M. A. Thomson, Rolf Seuster, Isabel Marian Trigger, K. W. Bell, Yoram Rozen, E. K. U. Gross, H. Voss, D. Zer-Zion, A. M. Smith, Kiyotomo Kawagoe, Gregor Herten, Gideon Bella, H. J. Burckhart, J. C. Hill, Jochen Schieck, R. J. Barlow, J. Goldberg, Junichi Kanzaki, F. K. Loebinger, Fabrizio Fabbri, A. Frey, Satoru Yamashita, Matthias Schröder, Tobias Kramer, B. C. Shen, Ivor Fleck, Andris Skuja, Joleen Pater, Balazs Ujvari, J. E. Pilcher, Edward K. G. Sarkisyan, D. Toya, M. Boutemeur, F. S. Merritt, Siegfried Bethke, Tetsuro Mashimo, M. F. Turner-Watson, H. A. Neal, A. Mutter, T. Schörner-Sadenius, I. Nakamura, N. Meyer, S. Campana, J. W. Gary, M. Kupper, T. Behnke, T. R. Junk, James Pinfold, A. Quadt, P. S. Wells, Alexander Oh, Terry Richard Wyatt, A. T. Watson, Marco Cuffiani, Claudia Ciocca, P. Gagnon, M. Hamann, K. Sachs, J. R. Carter, D. Lanske, Philip Bechtle, Marek Tasevsky, Christoph Rembser, C. Pahl, R. J. Sobie, G. D. Lafferty, Joost Vossebeld, Klaus Desch, Erez Etzion, R. K. Keeler, Zoltan Laszlo Trocsanyi, P. J. Bell, Stefan Kluth, P. M. Watkins, Shlomit Tarem, P. Renkel, M. Giunta, Dezso Horvath, Gunter Wolf, D. Karlen, Gideon Alexander, Paolo Capiluppi, H. Nanjo, P. Igo-Kemenes, M. Przybycień, Ehud Duchovni, A. Michelini, A. A. Carter, T. Kobayashi, A. Ludwig, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, Klaus Rabbertz, Stephen Lloyd, J. Dubbert, Robert Vertesi, R. K. Carnegie, J. A. Wilson, M. Ford, J. von Krogh, R. J. Hawkings, D. Wetterling, E. Torrence, A. Gupta, Alain Bellerive, A. Csilling, G. Anagnostou, Pamela Ferrari, D. E. Plane, Shlomo Dado, G. Giacomelli, A. De Roeck, M. Kobel, Frans Meijers, R. M. Brown, Lorne Levinson, A. D. Schaile, Paolo Giacomelli, Gabriella Pasztor, P. Vannerem, I. R. Bailey, C. P. Ward, S. Söldner-Rembold, Achim Stahl, C. Y. Chang, Raimund Ströhmer, S. W. O'Neale, K. J. Anderson, D. R. Ward, Satoshi Mihara, Frank Fiedler, OPAL Collaboration, G. ABBIENDI, C. AINSLEY, P. F. ÅKESSON, G. ALEXANDER, G. ANAGNOSTOU, K. J. ANDERSON, S. ASAI, D. AXEN, I. BAILEY, E. BARBERIO, T. BARILLARI, R. J. BARLOW, R. J. BATLEY, P. BECHTLE, T. BEHNKE, K. W. BELL, P. J. BELL, G. BELLA, A. BELLERIVE, G. BENELLI, S. BETHKE, O. BIEBEL, O. BOERIU, P. BOCK, M. BOUTEMEUR, S. BRAIBANT, R. M. BROWN, H. J. BURCKHAR, S. CAMPANA, P. CAPILUPPI, R. K. CARNEGIE, A. A. CARTER, J. R. CARTER, C. Y. CHANG, D. G. CHARLTON, C. CIOCCA, A. CSILLING, M. CUFFIANI, S. DADO, M. DALLAVALLE, A. DE ROECK, E. A. DE WOLF, K. DESCH, B. DIENES, J. DUBBERT, E. DUCHOVNI, G. DUCKECK, I. P. DUERDOTH, E. ETZION, F. FABBRI, P. FERRARI, F. FIEDLER, I. FLECK, M. FORD, A. FREY, P. GAGNON, J. W. GARY, C. GEICH-GIMBEL, G. GIACOMELLI, P. GIACOMELLI, M. GIUNTA, J. GOLDBERG, E. GROSS, J. GRUNHAUS, M. GRUWÉ, A. GUPT, C. HAJDU, M. HAMANN, G. G. HANSON, A. HAREL, M. HAUSCHILD, C. M. HAWKES, R. HAWKINGS, G. HERTEN, R. D. HEUER, J. C. HILL, D. HORVÁTH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T. R. JUNK, J. KANZAKI, D. KARLEN, K. KAWAGOE, T. KAWAMOTO, R. K. KEELER, R. G. KELLOGG, B. W. KENNEDY, S. KLUTH, T. KOBAYASHI, M. KOBEL, S. KOMAMIYA, T. KRÄMER, A. KRASZNAHORKAY JR., P. KRIEGER, J. VON KROGH, T. KUHL, M. KUPPER, G. D. LAFFERTY, H. LANDSMAN, D. LANSKE, D. LELLOUCH, J. LETTS, L. LEVINSON, J. LILLICH, S. L. LLOYD, F. K. LOEBINGER, J. LU, A. LUDWIG, J. LUDWIG, W. MADER, S. MARCELLINI, A. J. MARTIN, T. MASHIMO, P. MÄTTIG, J. MCKENNA, R. A. MCPHERSON, F. MEIJERS, W. MENGES, F. S. MERRITT, H. MES, N. MEYER, A. MICHELINI, S. MIHARA, G. MIKENBERG, D. J. MILLER, W. MOHR, T. MORI, A. MUTTER, K. NAGAI, I. NAKAMURA, H. NANJO, H. A. NEAL, S. W. O’NEALE, A. OH, M. J. OREGLIA, S. ORITO, C. PAHL, G. PÁSZTOR, J. R. PATER, J. E. PILCHER, J. PINFOLD, D. E. PLANE, O. POOTH, M. PRZYBYCIEń, A. QUADT, K. RABBERTZ, C. REMBSER, P. RENKEL, J. M. RONEY, A. M. ROSSI, Y. ROZEN, K. RUNGE, K. SACHS, T. SAEKI, E. K. G. SARKISYAN, A. D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCHÖRNER-SADENIUS, M. SCHRÖDER, M. SCHUMACHER, R. SEUSTER, T. G. SHEARS, B. C. SHEN, P. SHERWOOD, A. SKUJA, A. M. SMITH, R. SOBIE, S. SÖLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STRÖHMER, S. TAREM, M. TASEVSKY, R. TEUSCHER, M. A. THOMSON, E. TORRENCE, D. TOYA, I. TRIGGER, Z. TRÓCSÁNYI, E. TSUR, M. F. TURNER-WATSON, I. UEDA, B. UJVÁRI, C. F. VOLLMER, P. VANNEREM, R. VÉRTESI, M. VERZOCCHI, H. VOSS, J. VOSSEBELD, C. P. WARD, D. R. WARD, P. M. WATKINS, A. T. WATSON, N. K. WATSON, P. S. WELLS, T. WENGLER, N. WERMES, D. WETTERLING, G. W. WILSON, J. A. WILSON, G. WOLF, T. R. WYATT, S. YAMASHITA, D. ZER-ZION, and L. ZIVKOVIC
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Nuclear Theory, FOS: Physical sciences, Fizikai tudományok, Context (language use), Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Természettudományok, 0103 physical sciences, ddc:530, Rapidity, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hyperon, 3. Good health, Hadronization, Baryon, Diquark, High Energy Physics::Experiment, Baryon number, Particle Physics - Experiment
Abstract: Data collected around sqrt{s}=91 GeV by the OPAL experiment at the LEP e+e- collider are used to study the mechanism of baryon formation. As the signature, the fraction of Sigma-hyperons whose baryon number is compensated by the production of a Sigma-, Lambda or Xi- antihyperon is determined. The method relies entirely on quantum number correlations of the baryons, and not rapidity correlations, making it more model independent than previous studies. The diquark fragmentation model without the popcorn mechanism is strongly disfavored with a significance of 3.8 standard deviations including systematic uncertainties. It is shown that previous studies of the popcorn mechanism are not conclusive if parameter uncertainties are considered., Comment: No of pages 31 - No of figures 7
Published: 2009
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30. Physics and Experiments - Linear Collider

Author: Klaus DESCH
Published: 2007

31. Electron-Positron Linear Collider

Author: Klaus Desch
Subjects: Physics, Particle physics, Gauge boson, Positron, law, Higgs boson, Electron, Collider, law.invention
Published: 2005

32. Determination of MSSM Parameters from LHC and ILC Observables in a Global Fit

Author: Werner Porod, Philip Bechtle, Klaus Desch, and Peter Wienemann
Subjects: Physics, Particle physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Observable, Supersymmetry, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Simulated annealing, Radiative transfer, Electroweak scale, Engineering (miscellaneous), Minimal Supersymmetric Standard Model, Parametric statistics
Abstract: We present the results of a realistic global fit of the Lagrangian parameters of the Minimal Supersymmetric Standard Model assuming universality for the first and second generation and real parameters. No assumptions on the SUSY breaking mechanism are made. The fit is performed using the precision of future mass measurements of superpartners at the LHC and mass and polarized topological cross-section measurements at the ILC. Higher order radiative corrections are accounted for whereever possible to date. Results are obtained for a modified SPS1a MSSM benchmark scenario but they were checked not to depend critically on this assumption. Exploiting a simulated annealing algorithm, a stable result is obtained without any a priori assumptions on the values of the fit parameters. Most of the Lagrangian parameters can be extracted at the percent level or better if theoretical uncertainties are neglected. Neither LHC nor ILC measurements alone will be sufficient to obtain a stable result. The effects of theoretical uncertainties arising from unknown higher-order corrections and parametric uncertainties are examined qualitatively. They appear to be relevant and the result motivates further precision calculations. The obtained parameters at the electroweak scale are used for a fit of the parameters at high energy scales within the bottom-up approach. In this way regularities at these scales are explored and the underlying model can be determined with hardly any theoretical bias. Fits of high-scale parameters to combined LHC+ILC measurements within the mSUGRA framework reveal that even tiny distortions in the low-energy mass spectrum already lead to inacceptable chi^2 values. This does not hold for ``LHC only'' inputs., Comment: 25 pages, 5 figures
Published: 2005
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33. Measurement of Charm and Beauty Photoproduction at HERA using D* mu Correlations

Author: C. Niebuhr, S. Egli, Y. Soloviev, Georgios Tsipolitis, M. Fleischer, F. P. Schilling, Christoph Grab, A. Makankine, G. Buschhorn, Bogdan Povh, F. Sefkow, D. Ozerov, T. Laštovička, A. Vest, John A Coughlan, O. Behrendt, S. Vinokurova, E. Barrelet, Z. Rurikova, Adrian Perieanu, E. A. De Wolf, Ch. Berger, Karlheinz Meier, R. Roosen, P. Kostka, Paul Laycock, E. Malinovski, Emmanuel Sauvan, J. Turnau, G. Grindhammer, I. Foresti, A. Baghdasaryan, A. Rostovtsev, B. Stella, J. Žáček, T. Kluge, Gerhard Brandt, K. Krastev, G. Cozzika, V. Volchinski, N. Werner, I. Tsakov, B. Wessling, H. U. Martyn, Matthias Klein, T. Frisson, L. Lindfeld, H. Meyer, R. Demirchyan, Vladimir Palichik, I. Strauch, Roland Horisberger, Philipp Fleischmann, A. Valkárová, D. Wegener, I. R. Kenyon, Stefan Valkar, V. Lubimov, C. Pascaud, B. Olivier, C. Schmitz, Hannes Jung, Alexander Zhokin, V. Efremenko, Xavier Janssen, S. Mikocki, Guenter Eckerlin, A. Dubak, Peter Robmann, M. Goettlich, J. Formánek, Hans-Christian Schultz-Coulon, Martin Karlsson, V. Yeganov, J. Becker, C. Vallée, D. Utkin, J. Bähr, B. Vujicic, Magnus Hansson, Paul Richard Newman, Grzegorz Nowak, Zhen Zhang, K. Nankov, Ricardo Lopez-Fernandez, P. E. Reimer, Klaus Desch, F. Moreau, S. J. Aplin, L. N. Shtarkov, A. Rimmer, D. Hoffmann, Andreas Meyer, D. Meer, S. Backovic, R. Koutouev, A. Petrukhin, J-P. Meyer, P. Baranov, R. Weber, G. G. Winter, Gero Flucke, A. Knutsson, A. Usik, Sakar Osman, S. Baumgartner, L. Goerlich, V. Chekelian, G. Frising, H. Lueders, M. Kapichine, M. Nozicka, C. Veelken, S. Baudrand, A. Nikiforov, B. Delcourt, Wolfgang Lange, Ewelina Lobodzinska, Matthew Beckingham, S. Essenov, A. M. Fomenko, J. E. Olsson, Leif J. Jönsson, V. Cerny, A. Falkewicz, W. Bartel, V. Jemanov, Benoit Roland, Matthias Ulrich Mozer, S. Levonian, S. Schätzel, J. Gayler, C. Gerlich, Anna Kropivnitskaya, R. Felst, K. H. Hiller, R. C. W. Henderson, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Malte Hildebrandt, Sergey Rusakov, P. Truöl, A. Fedotov, T. Klimkovich, F. W. Büsser, M. Peez, S. Ginzburgskaya, C. Kiesling, W. Yan, R. Marshall, A. De Roeck, E. Tzamariudaki, A. J. Campbell, G. Thompson, D.P. Brown, J. Haller, N. Loktionova, R. Eichler, Michael R. Wessels, David South, V. Brisson, Theodora Papadopoulou, M.-O. Boenig, A. Specka, A. Hovhannisyan, Søren Schmidt, S. Mangano, K. Krüger, Natasa Raicevic, H. Henschel, I. Sheviakov, S. Schmitt, Th. Naumann, I. Tsurin, B. Portheault, Nicolas Berger, E. Gabathuler, J.C. Bizot, E. E. Elsen, K. Müller, C. Wigmore, Vincent Boudry, A. Zhelezov, A. Schöning, A. D.R. Vargas Trevino, Emmanuelle Perez, Christian Schwanenberger, A. Aktas, J. Zimmermann, Y. Vazdik, A. N. Morozov, P.D. Thompson, Stefania Xella, Stephen Maxfield, D. Perez-Astudillo, C. Risler, M. Gregori, J. Zálešák, V. Spaskov, R. Gerhards, J. Stiewe, F. Zomer, J. Kückens, K. Wacker, Dusan Bruncko, B. Naroska, Andrew Mehta, J. Bracinik, T. Greenshaw, Erika Garutti, J. Ferencei, M. Martisikova, J. Naumann, Katerina Lipka, Claus Kleinwort, N. Gogitidze, V. Tchoulakov, L. Bystritskaya, V. Andreev, H. Zohrabyan, C. Gwilliam, R. Plačakytė, A. Astvatsatourov, M. Ellerbrock, N. Keller, G. Herrera, Bradley Cox, Yves Sirois, V. Lendermann, V. Schröder, R. Wolf, A.-I. Lucaci-Timoce, G. Franke, F. Eisele, Judith Katzy, R. Oganezov, K. Sedlák, Y.H. Fleming, J. Cvach, C. Goyon, J. Wagner, Karel Cerny, A. Glazov, G. Weber, U. Straumann, V. Korbel, C. Werner, W.D. Dau, J. B. Dainton, B. Leißner, M. Ismail, David Milstead, P. A. Smirnov, O. Henshaw, L. Finke, K. Daum, F. Tomasz, G. Knies, M. Jacquet, I. Milcewicz-Mika, Anton Babaev, J. G. Contreras, Laurent Schoeffel, A. Mohamed, P. Prideaux, Murrough Landon, Pavel Murin, S. Gorbounov, M. Ibbotson, Wolfram Erdmann, B. List, P. Van Mechelen, Laurent Favart, T. Anthonis, J. V. Morris, A. Bunyatyan, D. Lüke, E. Wünsch, Dave Sankey, G. D. Patel, D.P. Johnson, N. Malden, A. Lebedev, F. Salvaire, D. Haidt, Daniel Pitzl, D. Traynor, A. Asmone, S. Ghazaryan, Eram Rizvi, G. Heinzelmann, F. Cassol-Brunner, V. Dodonov, L. Hajduk, M. Urban, C. Wissing, Jan Kretzschmar, L. Lytkin, Cristinel Diaconu, Thorsten Lux, L. Janauschek, N. Van Remortel, S. Caron, D.K. Nikitin, Pierre Marage, I. Glushkov, O. Behnke, 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 Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-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), H1, 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), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Proton, High Energy Physics::Lattice, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, law.invention, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), 010306 general physics, Collider, Nuclear Experiment, Physics, Quantum chromodynamics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: A measurement of charm and beauty photoproduction at the electron proton collider HERA is presented based on the simultaneous detection of a D*± meson and a muon. The correlation between the D* meson and the muon serves to separate the charm and beauty contributions and the analysis provides comparable sensitivity to both. The total and differential experimental cross sections are compared to LO and NLO QCD calculations. The measured charm cross section is in good agreement with QCD predictions including higher order effects while the beauty cross section is higher. © 2005 Elsevier B.V. All rights reserved., 0, DESY-05-040 / hep-ex/0503038, H1 Collaboration., info:eu-repo/semantics/published
Published: 2005
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34. Constraints on anomalous quartic gauge boson couplings fromνν¯γγandqq¯γγevents at CERN LEP2

Author: T. R. Junk, Gregor Herten, J. E. Pilcher, J. von Krogh, M. Hamann, Georges Azuelos, E. Tsur, C. M. Hawkes, Robert McPherson, K. D. Hoffman, H. Mes, I. P. Duerdoth, R. J. Hawkings, Klaus Rabbertz, Stephen Lloyd, Isabel Marian Trigger, K. W. Bell, Fabrizio Fabbri, A. Frey, Erez Etzion, Stefan Kluth, P. Gagnon, Gianni Masetti, S. Braibant, W. Menges, Otmar Biebel, M. Hauschild, Thorsten Wengler, Gabriele Benelli, Pamela Ferrari, J. G. Layter, J. C. Hill, S. Yamashita, P. Igo-Kemenes, Shlomit Tarem, Tobias Kramer, K. Ishii, H. Jeremie, G. Mikenberg, A. J. Martin, Zoltan Laszlo Trocsanyi, J. Grunhaus, R. J. Sobie, M. Giunta, Satoshi Mihara, D. J. Miller, R. J. Batley, Gideon Alexander, Paolo Giacomelli, Joost Vossebeld, O. Schaile, E. Torrence, A. Gupta, Yoram Rozen, Klaus Desch, Christoph Geich-Gimbel, T. Kuhl, A. D. Schaile, Gabriella Pasztor, P. Vannerem, Dave Charlton, Junichi Kanzaki, Norbert Wermes, Frank Fiedler, K. Buesser, W. Mader, T. Kawamoto, J. Dubbert, R. K. Carnegie, J. Goldberg, Ehud Duchovni, C. P. Ward, R. D. Heuer, J. A. Wilson, S. Orito, S. Söldner-Rembold, R. K. Keeler, Achim Stahl, R. M. Brown, Lorne Levinson, Lutz Feld, Gideon Bella, Daniel Lellouch, H. J. Burckhart, M. Boutemeur, F. S. Merritt, I. R. Bailey, Takehiko Mori, A. Harel, Christoph Rembser, T. Kobayashi, A. Ludwig, M. Przybycień, A. Mutter, J. A. McKenna, Ikuo Ueda, D. M. Strom, Kiyotomo Kawagoe, A. A. Carter, H. Landsman, J. Lu, M. Verzocchi, P. F. Åkesson, Giovanni Abbiendi, P. J. Bell, Matthias Schröder, Teresa Barillari, D. E. Plane, A. Csilling, H. Nanjo, Sachio Komamiya, Andris Skuja, M. J. Oreglia, P. Mättig, M. Gruwé, Shoji Asai, K. Kruger, Richard Nisius, H. Voss, T. Saeki, L. Zivkovic, Marco Cuffiani, Tetsuro Mashimo, Gunter Wolf, E. L. Barberio, J. R. Carter, M. F. Turner-Watson, D. Karlen, T. Schörner-Sadenius, N. Meyer, M. Kupper, Tara Shears, G. Giacomelli, A. De Roeck, M. Kobel, M. A. Thomson, D. Axen, E. K. U. Gross, Oana Elena Vickey Boeriu, Guenter Duckeck, Arnulf Quadt, Frans Meijers, F. Spano, P. M. Watkins, Peter Sherwood, G. Gaycken, N. K. Watson, J. Ludwig, James Pinfold, K. Runge, P. Bock, R. Seuster, M. Schumacher, P. Renkel, R. J. Hemingway, Richard Teuscher, J. Lillich, C. Ainsley, B. W. Kennedy, P. Jovanovic, E. A. De Wolf, S. Campana, Peter Krieger, J. M. Roney, P. S. Wells, Terry Richard Wyatt, A. T. Watson, Koichi Nagai, W. Mohr, P. Amaral, T. Behnke, P. Scharff-Hansen, N. Kanaya, A. M. Smith, D. R. Ward, Alain Bellerive, G. Anagnostou, B. C. Shen, M. Donkers, Siegfried Bethke, W. G. Scott, J. W. Gary, Marek Tasevsky, Dezso Horvath, C. Pahl, G. D. Lafferty, R. Vértesi, P. Tran, Gordon H. Hanson, M. Ford, C. F. Vollmer, Jochen Schieck, R. J. Barlow, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, Graham Wilson, Balazs Ujvari, H. A. Neal, Shlomo Dado, C. Y. Chang, S. Moed, L. Brigliadori, B. Poli, S. W. O'Neale, P. O. Günther, K. J. Anderson, Raimund Ströhmer, Beatrix Dienes, Alexander Oh, I. Nakamura, D. Lanske, A. Michelini, Oliver Pooth, John Allison, Claudia Ciocca, K. Sachs, Philip Bechtle, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, and James Letts
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Gauge boson, 010308 nuclear & particles physics, Electron–positron annihilation, Elementary particle, Lambda, 01 natural sciences, Particle identification, Standard Model, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Boson, Bar (unit)
Abstract: Anomalous quartic couplings between the electroweak gauge bosons may contribute to the nu(nu) over bar gammagamma and q (q) over bar gammagamma final states produced in e(+)e(-) collisions. This analysis uses the LEP2 OPAL data sample at center-of-mass energies up to 209 GeV. Event selections identify nu(nu) over bar gammagamma and q (q) over bar gammagamma events in which the two photons are reconstructed within the detector acceptance. The cross section for the process e(+)e(-)-->q (q) over bar gammagamma is measured. Averaging over all energies, the ratio of the observed e(+)e(-)-->q (q) over bar gammagamma cross section to the standard model expectation is R(data/SM)=0.92+/-0.07+/-0.04, where the errors represent the statistical and systematic uncertainties respectively. The nu(nu) over bar gammagamma and q (q) over bar gammagamma data are used to constrain possible anomalous W(+)W(-)gammagamma and ZZgammagamma couplings. Combining with previous OPAL results from the W(+)W(-)gamma final state, the 95% confidence level limits on the anomalous coupling parameters a(0)(Z), a(c)(Z), a(0)(W) and a(c)(W) are found to be -0.007 GeV-2
Published: 2004

35. Experimental studies of unbiased gluon jets frome+e−annihilations using the jet boost algorithm

Author: T. R. Junk, P. S. Wells, Terry Richard Wyatt, A. T. Watson, R. J. Hemingway, J. Lillich, B. W. Kennedy, Teresa Barillari, Tara Shears, P. Jovanovic, Gianni Masetti, S. Yamashita, Alain Bellerive, Andris Skuja, Peter Krieger, Georges Azuelos, B. Dienes, J. Grunhaus, K. Stephens, N. Kanaya, M. Przybycień, Gunter Wolf, A. A. Carter, P. Igo-Kemenes, Shlomo Dado, Shoji Asai, Dave Charlton, C. Y. Chang, C. F. Vollmer, Jochen Schieck, D. Karlen, C. Hensel, Tetsuro Mashimo, M. F. Turner-Watson, E. Torrence, A. Gupta, A. Csilling, Christoph Schwick, M. Kupper, Daniel Lellouch, S. Moed, Claudia Ciocca, Arnulf Quadt, E. Tsur, C. M. Hawkes, Isabel Marian Trigger, K. W. Bell, K. Ishii, H. Jeremie, R. J. Barlow, Takehiko Mori, J. C. Hill, A. Okpara, K. Sachs, Philip Bechtle, M. Verzocchi, M. A. Thomson, E. K. U. Gross, P. M. Watkins, G. Anagnostou, T. Behnke, P. F. Åkesson, Giovanni Abbiendi, Tobias Kramer, W. J. McDonald, Gideon Alexander, B. C. Shen, D. E. Plane, S. Komamiya, M. J. Oreglia, D. J. Miller, M. Donkers, Guenter Duckeck, Siegfried Bethke, L. Zivkovic, J. Letts, P. Renkel, P. Scharff-Hansen, W. G. Scott, R. D. Heuer, I. Nakamura, J. R. Carter, P. Tran, J. Goldberg, J. W. Gary, Gideon Bella, O. Schaile, Pamela Ferrari, J. G. Layter, P. Gagnon, Silvia Arcelli, L. Brigliadori, Matthias Schröder, W. Menges, Otmar Biebel, A. Mutter, H. J. Burckhart, H. Landsman, T. Kuhl, A. M. Smith, B. Poli, S. Campana, D. R. Ward, Kiyotomo Kawagoe, Marek Tasevsky, Dezso Horvath, Achim Stahl, Yoram Rozen, J. von Krogh, G. Gaycken, S. W. O'Neale, P. O. Günther, Zoltan Laszlo Trocsanyi, S. Rosati, M. Schumacher, A. Harel, Ikuo Ueda, D. M. Strom, J. Lu, Satoshi Mihara, A. D. Schaile, Gabriella Pasztor, M. Hamann, E. L. Barberio, A. Macpherson, R. J. Hawkings, Richard Keeler, James Pinfold, R. Seuster, R. J. Sobie, Joost Vossebeld, Junichi Kanzaki, Klaus Desch, Katja Klein, Norbert Wermes, J. Polok, H. Voss, T. Kawamoto, P. Vannerem, Klaus Rabbertz, D. Wetterling, K. J. Anderson, K. Buesser, E. A. De Wolf, Christoph Rembser, Raimund Ströhmer, Stephen Lloyd, S. Orito, G. Giacomelli, T. J. McMahon, T. Schörner-Sadenius, R. M. Brown, Frank Fiedler, C. Pahl, J. M. Roney, Erez Etzion, C. P. Ward, A. De Roeck, M. Kobel, J. Dubbert, D. Waller, Robert Vertesi, R. K. Carnegie, Lorne Levinson, D. Axen, P. Amaral, Paolo Giacomelli, Oana Elena Vickey Boeriu, Stefan Kluth, Shlomit Tarem, J. A. McKenna, G. D. Lafferty, K. Kruger, T. Saeki, Ehud Duchovni, F. Spano, Richard Teuscher, I. R. Bailey, J. A. Wilson, S. Söldner-Rembold, B. Ujvári, Koichi Nagai, L. L. Kormos, Peter Sherwood, Frans Meijers, M. Giunta, A. J. Martin, W. Mohr, H. Mes, P. Mättig, J. Ludwig, K. Runge, P. Bock, A. Michelini, I. P. Duerdoth, S. Braibant, W. Mader, T. Kobayashi, A. Ludwig, M. Gruwé, G. Mikenberg, Richard Nisius, Marco Cuffiani, R. J. Batley, P. J. Bell, H. Nanjo, Alexander Oh, D. Lanske, Robert McPherson, K. D. Hoffman, Fabrizio Fabbri, A. Frey, Christoph Geich-Gimbel, A. Fürtjes, Lutz Feld, M. Boutemeur, F. S. Merritt, Thorsten Wengler, B. Caron, Gabriele Benelli, G. W. Wilson, M. Hauschild, Gregor Herten, J. E. Pilcher, N. K. Watson, C. Ainsley, Oliver Pooth, John Allison, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, D. Zer-Zion, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, D. Toya, A. Klier, H. A. Neal, Gordon H. Hanson, and M. Ford
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Elementary particle, Jet (particle physics), 01 natural sciences, Particle identification, Gluon, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Algorithm
Abstract: We present the first exptl. results based on the jet boost algorithm, a technique to select unbiased samples of gluon jets in e+e- annihilations, i.e. gluon jets free of biases introduced by event selection or jet finding criteria. Our results are derived from hadronic Z0 decays obsd. with the OPAL detector at the LEP e+e- collider at CERN. First, we test the boost algorithm through studies with HERWIG Monte Carlo events and find that it provides accurate measurements of the charged particle multiplicity distributions of unbiased gluon jets for jet energies larger than about 5 GeV, and of the jet particle energy spectra (fragmentation functions) for jet energies larger than about 14 GeV. Second, we apply the boost algorithm to our data to derive unbiased measurements of the gluon jet multiplicity distribution for energies between about 5 and 18 GeV, and of the gluon jet fragmentation function at 14 and 18 GeV. In conjunction with our earlier results at 40 GeV, we then test QCD calcns. for the energy evolution of the distributions, specifically the mean and first two nontrivial normalized factorial moments of the multiplicity distribution, and the fragmentation function. The theor. results are in global agreement with the data, although the factorial moments are not well described for jet energies below about 14 GeV. [on SciFinder (R)]
Published: 2004

36. SUSY parameter determination in combined analyses at LHC/LC

Author: Mihoko M. Nojiri, Jan Kalinowski, Gudrid Moortgat-Pick, Giacomo Polesello, and Klaus Desch
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, High Energy Physics::Phenomenology, Gaugino, FOS: Physical sciences, Supersymmetry, Supersymmetry breaking, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Chargino, Neutralino, Supersymmetric standard model, Phenomenology, Higgsino, Minimal Supersymmetric Standard Model
Abstract: We demonstrate how the interplay of a future e^+e^- LC at its first stage with sqrt{s} sim 500 GeV and of the LHC could lead to a precise determination of the fundamental SUSY parameters in the gaugino/higgsino sector without assuming a specific supersymmetry breaking scheme. We demonstrate this for the benchmark scenario SPS1a, taking into account realistic errors for the masses and cross sections measured at the LC with polarised beams, including errors coming from polarisation measurements, and mass measurements at the LHC. The results clearly demonstrate the complementarity of the LHC and LC, and the benefit from the joint analyses of their data., Comment: 16 pages, 6 figures
Published: 2004

37. Search for Charged Excited Leptons in e+e- Collisions at sqrt(s) = 183-209 GeV

Author: Gideon Bella, H. J. Burckhart, P. F. Åkesson, Silvia Arcelli, A. D. Schaile, Gabriella Pasztor, P. Vannerem, B. Vachon, T. R. Junk, C. Hensel, P. S. Wells, S. Campana, C. P. Ward, S. Söldner-Rembold, A. T. Watson, H. Mes, Georges Azuelos, Richard Teuscher, E. Tsur, C. M. Hawkes, M. Hauschild, I. P. Duerdoth, S. Braibant, M. Przybycień, A. Csilling, T. Behnke, S. Rosati, Isabel Marian Trigger, K. W. Bell, T. Kress, A. A. Carter, H. Voss, Dave Charlton, C. Pahl, G. D. Lafferty, E. Elfgren, A. Harel, J. Letts, M. J. Oreglia, Matthias Schröder, Kiyotomo Kawagoe, J. C. Hill, J. Goldberg, Shoji Asai, Tobias Kramer, P. Hüntemeyer, L. Brigliadori, W. J. McDonald, D. Axen, Ikuo Ueda, D. M. Strom, James Pinfold, J. Lu, B. C. Shen, M. Donkers, Siegfried Bethke, I. J. Bloodworth, M. Verzocchi, Oana Elena Vickey Boeriu, Giovanni Abbiendi, H. Rick, Shlomo Dado, R. D. Heuer, S. Yamashita, S.J. Dallison, L. Zivkovic, R. K. Keeler, A. Tricoli, T. Trefzger, W. G. Scott, I. Nakamura, G. Giacomelli, Guenter Duckeck, P. Igo-Kemenes, Daniele Bonacorsi, F. Spano, Peter Sherwood, G. N. Patrick, J. W. Gary, V. Zacek, Arnulf Quadt, G. Gaycken, H. Landsman, M. Boutemeur, F. S. Merritt, S. W. O'Neale, A. De Roeck, M. Kobel, D. Krop, W. Menges, Tara Shears, D. Toya, Yoram Rozen, P. M. Watkins, J. Ludwig, K. Ishii, H. Jeremie, P. Mendez-Lorenzo, P. Mättig, M. Hamann, M. Schumacher, Frans Meijers, I. Cohen, P. O. Günther, Christoph Rembser, Giora Mikenberg, Gregor Herten, K. Runge, P. Bock, Marek Tasevsky, Dezso Horvath, P. Renkel, A. Macpherson, J. von Krogh, C. F. Vollmer, Andris Skuja, Gunter Wolf, T. R. Wyatt, E. A. De Wolf, K. Hoffman, R. J. Hawkings, Jochen Schieck, G. W. Wilson, Junichi Kanzaki, J. Polok, D. Wetterling, Tetsuro Mashimo, M. F. Turner-Watson, A. Leins, R. J. Sobie, D. Karlen, Balazs Ujvari, K. J. Anderson, J. E. Pilcher, E. L. Barberio, P. Amaral, J. P. Martin, P. J. Bell, L. L. Kormos, T. J. McMahon, Thorsten Wengler, P. Gagnon, Joost Vossebeld, Norbert Wermes, Alain Bellerive, O. Schaile, Klaus Desch, T. Kawamoto, R. J. Barlow, A. J. Martin, M. Kupper, J. Dubbert, R. K. Carnegie, Daniel Lellouch, R. Howard, B. Caron, Gianni Masetti, J. Allison, Takehiko Mori, J. A. Wilson, A. Okpara, W. Mader, S. Orito, Zoltan Laszlo Trocsanyi, C. Y. Chang, Thomas E Marchant, Dong Hee Kim, G. Karapetian, Gabriele Benelli, G. Anagnostou, J. A. McKenna, P. Scharff-Hansen, Paolo Giacomelli, D. J. Miller, Richard J. K. Taylor, G. P. Siroli, Erez Etzion, S. Moed, S. Spagnolo, Stefan Kluth, Shlomit Tarem, A. M. Smith, R. J. Hemingway, M. Harin-Dirac, Christoph Schwick, J. Lillich, B. W. Kennedy, M. Giunta, P. Jovanovic, M. Gruwé, Peter Krieger, C. H. Shepherd-Themistocleous, Richard Nisius, R. J. Homer, Marco Cuffiani, M. Ford, Christoph Geich-Gimbel, Alexander Oh, M. A. Thomson, D. Lanske, K. Stephens, A. Fürtjes, O. Sahr, N. Kanaya, Lutz Feld, J. Hauschildt, Achim Stahl, E. K. U. Gross, D. R. Ward, J. M. Roney, Koichi Nagai, Satoshi Mihara, Katja Klein, W. Mohr, Klaus Rabbertz, Frank Fiedler, Stephen Lloyd, P. Ferrari, R. Kowalewski, Gideon Alexander, Richard Batley, Ehud Duchovni, A. Michelini, D. E. Plane, T. Kobayashi, G. M. Dallavalle, P. Tran, K. Buesser, J. Cammin, K. Harder, Sachio Komamiya, R. M. Brown, Lorne Levinson, I. R. Bailey, O. Biebel, T. P. Kokott, D. Waller, T. Saeki, D. Zer-Zion, E. Torrence, Paul Kyberd, A. Gupta, F. K. Loebinger, Ivor Fleck, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, H. A. Neal, B. Poli, J. Grunhaus, N. K. Watson, C. Ainsley, V. Kartvelishvili, A. Mutter, K. Sachs, J. R. Carter, Philip Bechtle, Gordon H. Hanson, Rolf Seuster, Oliver Pooth, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, D. R. Rust, Robert McPherson, Thomas Schoerner-Sadenius, Fabrizio Fabbri, A. Frey, J. G. Layter, Raimund Ströhmer, and OPAL Collaboration
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, FOS: Physical sciences, Fermion, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pair production, Excited state, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Lepton
Abstract: A search for charged excited leptons decaying into a lepton and photon has been performed using approximately 680 pb-1 of e+e- collision data collected by the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV. No evidence for their existence was found. Upper limits on the product of the cross-section and the branching fraction are inferred. Using results from the search for singly produced excited leptons, upper limits on the ratio of the excited lepton coupling constant to the compositeness scale are calculated. From pair production searches, 95% confidence level lower limits on the masses of excited electrons, muons and taus are determined to be 103.2 GeV., Comment: 18 pages, 4 figures. Typos corrected
Published: 2002
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38. Search for the Standard Model Higgs Boson in e+e- Collisions at sqrt(s) = 192-209 GeV

Author: M. Donkers, Satoshi Mihara, Siegfried Bethke, W. G. Scott, Katja Klein, A. Leins, M. A. Thomson, I. Nakamura, J. W. Gary, Thorsten Wengler, W. Menges, P. Gagnon, E. K. U. Gross, Frank Fiedler, P. Mendez-Lorenzo, B. Caron, N. K. Watson, G. Gaycken, P. G. Bright-Thomas, M. Sproston, D. Glenzinski, F. Odorici, E. A. De Wolf, O. Sahr, Marek Tasevsky, Dezso Horvath, M. J. Losty, K. Hoffman, Matthias Schröder, O. Runolfsson, R. Liebisch, K. Roscoe, Dave Charlton, J. Letts, Zoltan Laszlo Trocsanyi, Dong Hee Kim, C. Ainsley, L. Stumpf, A. M. Rossi, H. Mes, I. P. Duerdoth, S. Braibant, P. Hüntemeyer, G. P. Siroli, Christoph Schwick, R. J. Batley, I. J. Bloodworth, Naoko Kanaya, R. Kowalewski, S. Arcelli, A. Gupta, E. Clay, Achim Stahl, Norbert Wermes, Christoph Geich-Gimbel, C. Y. Chang, Claudio Grandi, P. F. Åkesson, J. M. Roney, Sherry Towers, T. Kawamoto, Shlomo Dado, J. S. White, M. Fanti, Gregor Herten, P. G. Estabrooks, R. K. Keeler, R. D. Heuer, Koichi Nagai, Georges Azuelos, Yoram Rozen, T. R. Junk, W. Mohr, S. Orito, James Pinfold, R. Seuster, Gideon Alexander, Paolo Capiluppi, K. Graham, Tara Shears, B. Vachon, S. Yamashita, Vakhtang Kartvelishvili, E. Tsur, C. M. Hawkes, Gideon Bella, S. D. Talbot, Isabel Marian Trigger, K. W. Bell, T. Kress, C. Hensel, P. S. Wells, T. Kämer, J. Goldberg, C. Sbarra, Arnulf Quadt, D. Toya, Paolo Giacomelli, H. J. Burckhart, Terry Richard Wyatt, J. E. Pilcher, A. A. Carter, P. Ferrari, P. Igo-Kemenes, Robert McPherson, P. M. Watkins, A. Fürtjes, J. Cammin, K. Harder, A. T. Watson, J. C. Hill, C. H. Shepherd-Themistocleous, T. Behnke, Junichi Kanzaki, J. Polok, Giora Mikenberg, M. Harin-Dirac, D. Karlen, V. Zacek, K. Ishii, H. Jeremie, Lutz Feld, K. Sachs, R. J. Homer, Paul Kyberd, Fabrizio Fabbri, A. Frey, P. Renkel, A. W. Lloyd, M. Gruwé, R. M. Brown, Lorne Levinson, E. Torrence, D. Axen, A. Jawahery, S. Rosati, German Martinez, Daniel Lellouch, Oana Elena Vickey Boeriu, Guenter Duckeck, Alexander Oh, G. D. Long, Giovanni Abbiendi, K. Stephens, M. Boutemeur, F. S. Merritt, J. Grunhaus, H. Landsman, Kiyotomo Kawagoe, D. R. Rust, F. K. Loebinger, M. J. Oreglia, A. Csilling, G. W. Wilson, T. Kuhl, M. Hauschild, Richard Nisius, Ivor Fleck, P. Scharff-Hansen, Daniele Bonacorsi, F. Spano, I. R. Bailey, I. Cohen, O. Biebel, Peter Sherwood, Takehiko Mori, A. Harel, Christoph Rembser, A. Okpara, A. Macchiolo, P. Mättig, D. Lanske, Klaus Rabbertz, A. J. Martin, Stephen Lloyd, Richard Teuscher, C. Littlewood, J. Böhme, Raimund Ströhmer, S.J. Dallison, Ikuo Ueda, D. M. Strom, Marco Cuffiani, C. R. Jones, D. Krop, J. Ludwig, K. Runge, P. Bock, G. Benelli, Richard J. K. Taylor, Alain Bellerive, D. E. Plane, J. Lu, Erez Etzion, A. D. Schaile, Gabriella Pasztor, N. L. Rodning, A. M. Smith, M. Verzocchi, T. Trefzger, Joleen Pater, Edward K. G. Sarkisyan, A. Klier, O. Schaile, J. Couchman, W. Mader, Ehud Duchovni, P. Dervan, B. Poli, J. A. McKenna, Juergen Thomas, J. R. Carter, G. N. Patrick, H. Rick, P. Vannerem, G. M. Dallavalle, Stefan Kluth, Shlomit Tarem, Andris Skuja, C. F. Vollmer, H. A. Neal, A. Michelini, J. von Krogh, D. R. Ward, K. R. Hossain, Tetsuro Mashimo, M. F. Turner-Watson, G. A. Snow, C. P. Ward, B. Surrow, A. Macpherson, T. Kobayashi, R. J. Barlow, R. J. Hawkings, D. Wetterling, F. G. Oakham, M. Kupper, S. Söldner-Rembold, C. Pahl, T. J. McMahon, G. D. Lafferty, D. I. Futyan, M. Ford, Thomas E Marchant, D. Zer-Zion, J. Dubbert, R. K. Carnegie, M. Schumacher, E. L. Barberio, R. J. Sobie, Sachio Komamiya, Beatrix Dienes, Joost Vossebeld, Oliver Pooth, Klaus Desch, Shoji Asai, J. A. Wilson, John Allison, R. Howard, L. Brigliadori, T. P. Kokott, D. Waller, G. Karapetian, T. Saeki, R. G. Kellogg, Csaba Hajdu, Stefano Marcellini, S. W. O'Neale, P. O. Günther, K. J. Anderson, A. K. Honma, D. J. Miller, S. Spagnolo, R. J. Hemingway, J. Lillich, B. W. Kennedy, P. Jovanovic, Austin Ball, Peter Krieger, Alessandro Montanari, P. E.L. Clarke, J. P. Martin, G. Anagnostou, H. Voss, G. G. Hanson, G. Giacomelli, I. Lawson, A. De Roeck, M. Kobel, M. S. Dixit, Frans Meijers, J. G. Layter, W. J. McDonald, B. C. Shen, and OPAL Collaboration
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, FOS: Physical sciences, 01 natural sciences, Upper and lower bounds, Lower limit, High Energy Physics - Experiment, 3. Good health, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Full data, Consistency (statistics), 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment
Abstract: A search for the Standard Model Higgs boson has been performed with the OPAL detector at LEP based on the full data sample collected at sqrt(s) = 192-209 GeV in 1999 and 2000, corresponding to an integrated luminosity of approximately 426 pb-1. The data are examined for their consistency with the background-only hypothesis and various Higgs boson mass hypotheses. A lower bound of 109.7 GeV is obtained on the Higgs boson mass at the 95% confidence level. At higher masses, the data are consistent with both the background and the signal-plus-background hypotheses., Comment: 19 pages, 7 figures, Accepted by Physics Letters B
Published: 2001
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39. Precision studies of the Higgs boson profile at the e[sup +]e[sup −] linear collider

Author: Marco Battaglia and Klaus Desch
Subjects: Physics, Particle physics, Luminosity (scattering theory), Large Hadron Collider, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, law.invention, Muon collider, law, Complementarity (molecular biology), Higgs boson, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract: This paper reviews the potential of a high luminosity e+e- linear collider (LC) in the precision study of the Higgs boson profile. The complementarity of the linear collider data with that from the LHC is also discussed together with a comparison with a muon collider.
Published: 2001

40. Study of Higgs boson production through WW-fusion at a linear collider

Author: Klaus Desch and N. Meyer
Subjects: Nuclear physics, Physics, Higgs field, Gauge boson, Particle physics, High Energy Physics::Phenomenology, Higgs boson, High Energy Physics::Experiment, Elementary particle, Scalar boson, Standard Model, Boson, Vector boson
Abstract: We study the feasibility of measuring the cross section of Higgs boson production in the WW-fusion process, e+e−→νeνeH0, at a future linear collider at center-of-mass energies between 350 and 500 GeV. Realistic assumptions for detector resolution effects, b-quark tagging efficiency and background processes are made. Using the decay mode H0→bb the cross section can be measured to an accuracy of 3% for a Higgs boson mass of 120 GeV, assuming 500fb−1 of data. This measurement can be used to extract the coupling gHWW between Higgs and W bosons and indirectly determine the total decay width of the Higgs boson.
Published: 2001

41. Multi-photon production in e+e− collisions at √s = 189 GeV

Author: M. Schumacher, John Allison, Raimund Ströhmer, F. Odorici, Otmar Biebel, S. Yamashita, K. Hoffman, P. Igo-Kemenes, T. R. Junk, R. G. Kellogg, D. Axen, K. Ishii, H. Jeremie, P. Poffenberger, P. S. Wells, D. J. Miller, Dave Charlton, M. Fierro, I. J. Bloodworth, A. Jawahery, Csaba Hajdu, Oana Elena Vickey Boeriu, O. Runolfsson, S. Baumann, Stefano Marcellini, Terry Richard Wyatt, Claudio Grandi, J. S. White, O. C. Cooke, Ekg Sarkisyan, P. Pfeifenschneider, Peter Sherwood, R. Kowalewski, P. I. Kayal, Alexander Wagner, A. Macchiolo, S. Arcelli, E. A. Mckigney, Yoram Rozen, Beatrix Dienes, A. Biguzzi, A. J. Martin, O. Schaile, D. Lanske, R. D. Heuer, J. Ludwig, K. Runge, L. Brigliadori, J. Patt, André Schöning, Gideon Alexander, W. M. Sang, J. G. Layter, P. Bock, S. Robertson, Norbert Wermes, H. Mes, P. Scharff-Hansen, Paolo Capiluppi, I. P. Duerdoth, S. Braibant, J. Lauber, Sherry Towers, O. Sahr, Junichi Kanzaki, J. Polok, Erez Etzion, J. Couchman, A. Macpherson, T. Kawamoto, W. Mader, D. I. Futyan, C. K. Hargrove, D. Karlen, Gideon Bella, S. D. Talbot, S. W. O'Neale, R. L. Coxe, P. Hüntemeyer, Shlomit Tarem, Matthias Schröder, K. J. Anderson, M. Thiergen, A. M. Smith, P. E.L. Clarke, T. Kuhl, Stefan Schmitt, S. Orito, D. Chrisman, G. D. Long, H. J. Burckhart, Jacqueline Batley, Richard Nisius, Achim Stahl, A. D. Schaile, T. Behnke, B. Surrow, Gabriella Pasztor, Klaus Desch, C. H. Shepherd-Themistocleous, B. List, P. Vannerem, C. Sbarra, F. R. Jacob, J. P. Martin, A. M. Rossi, P. G. Estabrooks, R. K. Keeler, Richard Teuscher, R. Howard, F. Fiedler, Marco Cuffiani, R. Hawkings, K. Stoll, Stephen Lloyd, H. Landsman, Andris Skuja, C. Y. Chang, S. Petzold, S. Betts, Ehud Duchovni, S. De Jong, G. A. Snow, C. P. Ward, N. K. Watson, Arnulf Quadt, M. Hapke, S. Rosati, Tetsuro Mashimo, Shoji Asai, P. Taras, J. Goldberg, K. Stephens, M. F. Turner-Watson, K. Graham, Tara Shears, M. Jimack, Paul Kyberd, Naoko Kanaya, F. K. Loebinger, S. Söldner-Rembold, H. Rick, A. Michelini, Ivor Fleck, M. Watkins, C. R. Jones, P. Gagnon, A. Harel, A Höcker, C. Littlewood, Ikuo Ueda, D. M. Strom, J. Lu, J. Letts, Joleen Pater, T. Kobayashi, A. Klier, F. G. Oakham, W. Gorn, Zoltan Laszlo Trocsanyi, Dong Hee Kim, M. J. Oreglia, Daniel Lellouch, E. L. Barberio, A. W. Lloyd, G. W. Wilson, Takehiko Mori, I. Cohen, H. A. Neal, Peter R Hobson, Thomas E Marchant, Paolo Giacomelli, K. Sachs, Shlomo Dado, G. G. Hanson, M. Hansroul, A. A. Faust, A. Okpara, P. Mättig, Christoph Rembser, James Pinfold, R. Perez-Ochoa, R. Seuster, S. A. Robins, S.J. Dallison, M. Hauschild, Michael Hildreth, Alain Bellerive, R. J. Hemingway, G. Giacomelli, I. Lawson, J. Lillich, Christopher Hawkes, I. Trigger, M. Verzocchi, R. Liebisch, K. Ackerstaff, M. Kolrep, A. De Roeck, M. Kobel, B. W. Kennedy, D. Zer-Zion, D. R. Ward, J. R. Carter, G. N. Patrick, Sachio Komamiya, M. Harin-Dirac, V. Zacek, A. T. Watson, P. Jovanovic, Austin Ball, N. L. Rodning, Peter Krieger, Giora Mikenberg, J. W. Gary, R. J. Homer, M. S. Dixit, Frans Meijers, Satoshi Mihara, S. F. Ashby, Marcello Mannelli, S. B. Anderson, Alessandro Montanari, I. Meyer, P. Dervan, B. Poli, H. Voss, R. J. Barlow, T. P. Kokott, D. Waller, Stan Bentvelsen, S. Spagnolo, T. Saeki, Randall Sobie, G. D. Lafferty, Alessandra Fanfani, R. Davis, Guenter Duckeck, J. Grunhaus, Juergen Thomas, Claudia Ciocca, M. Fanti, D. E. Plane, G. M. Dallavalle, P. Ferrari, K. Roscoe, German Martinez, Robert McPherson, E. Torrence, J. M. Roney, W. J. McDonald, E. Clay, B. C. Shen, M. Donkers, M. Przybycień, T. Kress, Kiyotomo Kawagoe, T. Trefzger, Siegfried Bethke, D. Liu, A. K. Honma, A. A. Carter, Koichi Nagai, K. R. Hossain, Fabrizio Fabbri, A. Frey, J. Schieck, W. R. Gibson, W. G. Scott, D. C. Imrie, K. Harder, I. Nakamura, W. Mohr, Giovanni Abbiendi, G. P. Siroli, Daniele Bonacorsi, Christoph Schwick, D. R. Rust, R. M. Brown, Lorne Levinson, P. Mendez-Lorenzo, D. Glenzinski, J. von Krogh, Dezso Horvath, M. J. Losty, M. A. Thomson, M. Gruwé, D. Wetterling, T. J. McMahon, C. Couyoumtzelis, J. Dubbert, R. K. Carnegie, J. A. Wilson, J. Böhme, E. K. U. Gross, R. Van Kooten, M. Sproston, F. Wäckerle, D. M. Gingrich, Georges Azuelos, E. Tsur, K. W. Bell, J. C. Hill, M. Boutemeur, F. S. Merritt, J. Bechtluft, J. A. McKenna, H. O. Ogren, Christoph Geich-Gimbel, Vakhtang Kartvelishvili, J. E. Conboy, A. Fürtjes, Lutz Feld, Gregor Herten, J. E. Pilcher, G. Gaycken, and P. G. Bright-Thomas
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Photon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Resonance, Context (language use), 01 natural sciences, 7. Clean energy, Nuclear physics, Excited state, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, 010306 general physics
Abstract: The process e+e−→γγ(γ) is studied using data recorded with the OPAL detector at LEP. The data sample taken at a centre-of-mass energy of 189 GeV corresponds to a total integrated luminosity of 178 pb−1. The measured cross-section agrees well with the expectation from QED. A fit to the angular distribution is used to obtain improved limits at 95% CL on the QED cut-off parameters: Λ+> 304 GeV and Λ−> 295 GeV as well as a mass limit for an excited electron, Me* > 306 GeV assuming equal e*ey and eeγ couplings. Graviton exchange in the context of theories with higher dimensions is excluded for scales G+< 660 GeV and G−< 634 GeV. No evidence for resonance production is found in the invariant mass spectrum of photon pairs. Limits are obtained for the cross-section times branching ratio for a resonance decaying into two photons and produced in association with another photon.
Published: 1999

42. Test of the universality of $\tau$ and $\mu$ lepton couplings in $W$-boson decays from $t\bar{t}$ events with the ATLAS detector

Author: Georges Aad, Braden Abbott, Abbott, Dale Charles, Adam Abed Abud, Kira Abeling, Deshan Abhayasinghe, Syed Haider Abidi, Ossama Sherif Alexander AbouZeid, Abraham, Nicola, Halina Abramowicz, Abreu, Henso, Yiming Abulaiti, Bobby Acharya, Baida Achkar, Lennart Adam, Claire Bourdarios, Leszek Adamczyk, Lukas Adamek, Jahred Adelman, Adersberger, Michael, Aytul Adiguzel, Sofia Adorni Braccesi Chiassi, Tim Adye, Anthony Affolder, Yoav Afik, Christina Agapopoulou, Merve Nazlim Agaras, Anamika Aggarwal, Agheorghiesei, Catalin, Juan Antonio Aguilar Saavedra, Ahmad, Ammara, Faig Ahmadov, waleed syed ahmed, Xiaocong Ai, Giulio Aielli, Shunichi Akatsuka, Melike Akbiyik, Torsten Akesson, ECE AKILLI, Andrey Akimov, konie al khoury, Gian Luigi Alberghi, Justin Albert, Maria Josefina Alconada Verzini, Sara Alderweireldt, Martin Aleksa, Igor Alexandrov, Calin Alexa, Alexopoulos, Theodoros, Alice Alfonsi, FABRIZIO ALFONSI, Muhammad Alhroob, Babar Ali, Shahzad Ali, Malik Aliev, Gianluca Alimonti, Corentin Allaire, Benedict Allbrooke, Benjamin Allen, Philip Allport, Alberto Aloisio, Francisco Alonso, Cristiano Alpigiani, Alunno Camelia, Elio, Manuel Alvarez Estevez, Mariagrazia Alviggi, Yara Coutinho, Alessandro Ambler, Luca Ambroz, Amelung, Christoph, Dante Amidei, Susana Amor Santos, Simone Amoroso, Amrouche, Cherifa Sabrina, Fenfen An, Christos Anastopoulos, Nansi Andari, Timothy Andeen, John Anders, Stefio Yosse Andrean, Andreazza, Attilio, Andrei, George Victor, Anelli, Christopher Ryan, Stylianos Angelidakis, Aaron Angerami, Alexey Anisenkov, Alberto Annovi, Claire Antel, Matthew Anthony, Egor Antipov, Mario Antonelli, Daniel Antrim, Fabio Anulli, Masato Aoki, Aparisi Pozo, Javier Alberto, Aparo, Marco, Ludovica Aperio Bella, Nordin Aranzabal, Victor Araujo Ferraz, Araujo Pereira, Rodrigo, Chiara Arcangeletti, Ayana Holloway Arce, Arduh, Francisco Anuar, Jean-Francois Arguin, Spyridon Argyropoulos, Jan-Hendrik Arling, Aaron Armbruster, Alexander Armstrong, Olivier Arnaez, Hannah Arnold, Arrubarrena Tame, Zulit Paola, Giacomo Artoni, Haruka Asada, Asai, Kanae, Shoji Asai, Asawatavonvanich, Thanawat, Nedaa Alexandra Asbah, Eleni Myrto Asimakopoulou, lily asquith, Jihad Assahsah, Assamagan, Ketevi, Robert Astalos, Ryan Atkin, Atkinson, Markus, Naim Bora Atlay, Atmani, Hicham, Kamil Augsten, Volker Andreas Austrup, Giuseppe Avolio, Mohamad Kassem Ayoub, Georges Azuelos, Henri Bachacou, Konstantinos Bachas, Backman, Filip, Paolo Bagnaia, Marzieh Bahmani, Baluch Bahrasemani, Sina, Adam Bailey, Virginia Bailey, John Baines, Bakalis, Christos, Oliver Baker, Pepijn Bakker, Evelin Bakos, Debottam BakshiGupta, Shyam Balaji, Rahul Balasubramanian, Evgenii Baldin, Petr Balek, Fabrice Balli, William Balunas, Johannes Balz, Elżbieta Banaś, Marilena Bandieramonte, Anjishnu Bandyopadhyay, swagato banerjee, Liron Barak, William Barbe, Elisabetta Barberio, Dario Barberis, Marlon, Barbour, Gregory, Barillari Teresa, Martin Barisits, Jason Barkeloo, Timothy Barklow, Barnea, Rotem, Bruce Barnett, Michael Barnett, Zuzana Blenessy, Antonio Baroncelli, Gaetano Barone, Alan Barr, Laura Barranco Navarro, Fernando Barreiro, Joao Guimaraes da Costa, Uriel Barron, Sergey Barsov, Falk Bartels, Rainer Bartoldus, Giovanni Bartolini, Adam Barton, Pavol Bartos, Artem Basalaev, Alexander Basan, Ahmed Bassalat, Matthew Basso, richard bates, Batlamous, Souad, Richard Batley, Binish Batool, Battaglia, Marco, Matteo Bauce, Florian Bauer, Patrick Bauer, Bawa, Harinder Singh, Arif Bayirli, James Beacham, Tristan Beau, Pierre-Hugues Beauchemin, Fabian Becherer, Philip Bechtle, Beck, Helge Christoph, Hans Peter Beck, Kathrin Becker, Cyril Becot, Beddall, Ayda, Andrew Beddall, Vadim Bednyakov, Matteo Bedognetti, Christopher Bee, Beermann, Thomas Alfons, Marcia Begalli, Michael Begel, Arabinda Behera, Katharina Behr, J., Florian Beisiegel, Mohamed Belfkir, Andrew Bell, Gideon Bella, Lorenzo Bellagamba, Alain Bellerive, Panagiotis Bellos, Beloborodov, Konstantin, Konstantin Belotsky, Nikita Belyaev, Driss Benchekroun, Nektarios Benekos, yan benhammou, Douglas Benjamin, Mathieu Benoit, James Bensinger, Stan Bentvelsen, Lydia Beresford, Matteo Mario Beretta, David Berge, Elin Bergeaas Kuutmann, Nicolas Berger, Benedikt Ludwig Bergmann, Laura, Juerg Beringer, Simon, Gregorio Bernardi, Catrin Bernius, Florian Bernlochner, Tracey Berry, Peter Berta, Anne-Sophie Berthold, Iain Alexander Bertram, Olga Bessidskaia Bylund, Nathalie Besson, Agni Bethani, Siegfried Bethke, Alessandra Betti, Adrian Bevan, Julien-Christopher Beyer, Deb Sankar Bhattacharya, Bhattarai, Prajita, Vallary Bhopatkar, Bi, Runyu, Riccardo Maria Bianchi, Otmar Biebel, Dustin Biedermann, Rafal Bielski, Katharina Bierwagen, Nicolò Vladi Biesuz, Michela Biglietti, Thomas Billoud, Marcello Bindi, Ahmet Bingul, Cesare Bini, Silvia Biondi, Birch-Sykes, Callum Jacob, Mattias Birman, Bisanz, Tobias, Jyoti Prakash Biswal, Diptaparna Biswas, Alexander Bitadze, Carsten Bittrich, Kristian Bjørke, Tomas Blazek, Ingo Bloch, Craig Blocker, Andrew Blue, Ulla Blumenschein, gerard jan bobbink, Viktor Bobrovnikov, Bocchetta, Simona Serena, Daniela Boerner, Danijela Bogavac, Alexander Bogdanchikov, Bohm, Christian, Veronique Boisvert, Petar Bokan, Tomasz Bold, Arthur Eugen Bolz, Marco Bomben, Marcella Bona, Johan Bonilla, Maarten Boonekamp, Booth, Callum Dale, Borbély, A. G., Hanna Borecka-Bielska, Borgna, Lucas Santiago, Borisov, Anatoly, Guennadi Borissov, Daniela Bortoletto, Davide Boscherini, Martine Bosman, Jonathan David Bossio Sola, Khalil Bouaouda, Joseph Boudreau, Evelina Bouhova-Thacker, Boumediene, Djamel, Antonio Boveia, James Boyd, Diallo Boye, Igor Boyko, Adam Bozson, Juraj Bracinik, Brahimi, Nihal, Brandt, Gerhard, Oleg Brandt, Früd Braren, Benjamin Brau, Brau, James E., Breaden Madden, William Dmitri, Kurt Brendlinger, Roy Schimmel Brener, Lydia Brenner, Richard Brenner, Shikma Bressler, Bernard Brickwedde, Daniel Briglin, David Britton, Britzger Daniel, Ian Brock, Raymond Brock, Gustaaf Brooijmans, William Brooks, Elizabeth Brost, Pawel Bruckman de Renstrom, Ben Brüers, Dusan Bruncko, Alessia Bruni, Graziano Bruni, Marco Bruschi, Nello Bruscino, Lene Kristian Bryngemark, Trygve Buanes, Quentin Buat, Peter Buchholz, Andy Buckley, Ioulian Budagov, Magnar Kopangen Bugge, Felix Bührer, Oleg Bulekov, Brendon Bullard, Tyler James Burch, Sergey Burdin, Carsten Burgard, Angela Burger, Blake Burghgrave, Jonathan Burr, Charles Burton, Burzynski, Jackson Carl, Volker Buescher, Buschmann, Eric, peter bussey, John Butler, Craig Buttar, Jonathan Butterworth, Butti, Pierfrancesco, William Buttinger, Buxo Vazquez, Carlos Josue, Adrian Buzatu, Alexey Buzykaev, Grazia Cabras, Susana Cabrera Urbán, Davide Caforio, Huacheng Cai, Valentina Maria Martina Cairo, Cakir, Orhan, Noemi Calace, Paolo Calafiura, Giovanni Calderini, Philippe Calfayan, Giuseppe Callea, Caloba, Luiz, Caltabiano, Alessandro, Sergio Calvente Lopez, David Calvet, Samuel Calvet, Thomas Calvet, Milene Calvetti, Reina Coromoto Camacho Toro, Stefano Camarda, Daniel Camarero Muñoz, Paolo Camarri, Maria Teresa Camerlingo, David Cameron, Clément Camincher, Campana, Simone, Mario Campanelli, Alessandra Camplani, Vincenzo Canale, Auriane Canesse, Marc Bret Cano, Josu Cantero García, Tingting Cao, Yumeng Cao, Mar Capeans, Marcella Capua, Roberto Cardarelli, Fabio Cardillo, Giovandomenico Carducci, Ina Carli, Tancredi Carli, Gianpaolo Carlino, Benjamin Carlson, Evan Carlson, LEONARDO CARLO CARMINATI, Rebecca Carney, Sascha, Edson Carquin, SONIA CARRA, Giuseppe Carratta, Joseph Carter, Thomas Carter, María Pilar Casado Lechuga, Casha, Albert Francis, Castiglia, Emma Grace, Florencia Luciana Castillo, Lucía Castillo García, Maria Victoria Castillo, Nuno Castro, Andrea Catinaccio, Catmore, James, Cattai, Ariella, Viviana Cavaliere, Vincenzo Cavasinni, Celebi, Emre, Celli, Federico, Karel Černý, Augusto Cerqueira, alessandro cerri, Lucio Cerrito, Fabio Cerutti, Alberto Cervelli, SERKANT ALİ ÇETİN, Chadi, Zakaria, dhiman chakraborty, Jay Chan, Wing Sheung Chan, Chan, Wai Yuen, John Chapman, Bakar Chargeishvili, David Charlton, Thomas Charman, Chatterjee, Meghranjana, Chav Chhiv Chau, Siinn Che, Sergei Chekanov, Sergey Chekulaev, SHELKOV GEORGY, Boping Chen, Chen, Cheng, Chunhui Chen, Huirun Chen, Hucheng Chen, Jing Chen, jue chen, Jiayi Chen, Shion Chen, Shenjian Chen, Chen, Xin, Ye Chen, Chen Yu-Heng, Hok-Chuen Cheng, Huajie Cheng, Alexander Cheplakov, Cheremushkina, Evgenia, Rajaa Cherkaoui El Moursli, Elliott Cheu, Kingman Cheung, Thibault Chevalerias, laurent chevalier, Vitaliano Chiarella, Giorgio Chiarelli, Gabriele Chiodini, Andrew Chisholm, Adrian Chitan, Chiu, I-Huan, Yu Him Justin Chiu, Mihail Chizhov, KYUNGEON CHOI, Arthur Chomont, Chow, Yun Sang, Lawrence christopher, Ming-chung Chu, Xiaotong Chu, Jiri Chudoba, Janusz Chwastowski, Chytka, Ladislav, Davide Cieri, Krzysztof Cieśla, Vladimir Cindro, Irina Cioara, Alessandra Ciocio, Francesco Cirotto, Zvi Citron, Mauro Citterio, Ciubotaru, Dan Andrei, Ciungu, Bianca Monica, Allan Clark, Michael Clark, Philip Clark, Savannah Clawson, Christophe Clement, Yann Coadou, marina cobal, Andrea Coccaro, Cochran, James H., Rafael Coelho Lopes de Sa, Cohen, Hadar Yosef, Artur Coimbra, Brian Cole, Colijn, Auke-Pieter, Johann Collot, Conde Muino, P., Simon Connell, Ian Connelly, 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Bogdan, Paweł Malecki, Victor Maleev, Fairouz Malek, Davide Malito, Usha Mallik, Claire Malone, Maltezos, Stavros, Malyukov, Sergei, Judita Mamuzic, Giada Mancini, Igor Mandić, Luciano Manhães de Andrade Filho, Ioannis Maniatis, Joany Manjarrés Ramos, Katja Mankinen, Alexander Mann, Athanasios Manousos, Bruno Mansoulie, Ioannis Manthos, Stefano Manzoni, Alexandros Marantis, Gino Marceca, Luigi Marchese, Giovanni Marchiori, Michal Marcisovsky, Lorenzo Marcoccia, Caterina Marcon, Marija Marjanovic, Zachary Marshall, Mikael Mårtensson, Salvador Marti-Garcia, Christopher Blake Martin, Tim Martin, Victoria Martin, Bertrand Martin dit Latour, Luca Martinelli, MARIO MARTINEZ, Pablo Martinez-Agullo, Verena Ingrid Martinez Outschoorn, Stewart Martin-Haugh, Sorin Martoiu, Alex Martyniuk, Antoine Marzin, Stefan Raimund Maschek, Lucia Masetti, Tetsuro Mashimo, Ruslan Mashinistov, Jiri Masik, Alexey Maslennikov, Lorenzo Massa, Paolo Massarotti, Paolo Mastrandrea, Anna Mastroberardino, Tatsuya 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D., Matej Melo, Federico Meloni, Alexander Melzer, Emanuel Gouveia, António Jacques Costa, Lingxin Meng, Xiangting Meng, Sven Menke, Meoni, Evelin, Mergelmeyer, Sebastian, Merkt, Sebastian Andreas, Claudia Merlassino, Mermod, P., Leonardo Merola, Chiara Meroni, Merz, Garrett, Oleg Meshkov, John Meshreki, Jessica Metcalfe, Alaettin Serhan Mete, Christopher Meyer, Meyer, Jean-Pierre, Michele Michetti, Robin Middleton, Liza Mijovic, Mikenberg, Giora, Marcela Mikestikova, Marko Mikuz, Hannes Mildner, Adriana Milic, Christopher Milke, David Miller, Laura Miller, Alexander Milov, Milstead, David, Robert Mina, Andrey Minaenko, Irakli Minashvili, Allen Mincer, Bartosz Mindur, Mikhail Mineev, Minegishi, Yuji, Yuya Mino, Lluïsa-Maria Mir, Mironova, Maria, Khilesh Mistry, Takashi Mitani, Mitrevski, Jovan, Vasiliki Mitsou, Mittal, Monika, Ovidiu Miu, Antonio Miucci, Paul Miyagawa, Atsushi Mizukami, Mjoernmark, Jan-Ulf, Tigran Mkrtchyan, Michaela Mlynáriková, Torbjoern Moa, Silke Möbius, Kazuya Mochizuki, Philipp Mogg, Soumya Mohapatra, Regina Moles-Valls, Klaus Moenig, Emmanuel monnier, Alyssa Montalbano, Javier Montejo Berlingen, Marco Montella, Fernando Monticelli, Simone Monzani, Nicolas Morange, Ana Luisa Carvalho, Deywis Moreno Lopez, María Moreno Llácer, Carlos Moreno Martínez, Paolo Morettini, Marcus Morgenstern, Stefanie Morgenstern, Daniel Mori, Masahiro Morii, Morinaga, Masahiro, Vanja Morisbak, Anthony Morley, Giuseppe Mornacchi, Alice Morris, Ljiljana Morvaj, Paris Moschovakos, Brian Moser, Mosidze, Maia, Tetiana Moskalets, Polina Moskvitina, Joshua Moss, Edward Moyse, Steve Muanza, James Mueller, Mueller, Ralph Soeren Peter, Daniel Matthias Alfred Muenstermann, Geoffrey Mullier, Davide Pietro Mungo, Muñoz Martinez, Jose L., Francisca Munoz Sanchez, Pavel Murín, William Murray, Alessia Murrone, Joseph Muse, Miha Muskinja, Mwewa, Chilufya, Alexey Myagkov, Myers, Ava Anne, Gregory Myers, John Myers, Miroslav Myška, Benjamin Nachman, Olaf Nackenhorst, Abhishek Nag, Koichi Nagai, Kunihiro Nagano, Yasushi Nagasaka, JAMES NAGLE, Elemer Nagy, Armin Nairz, Yu Nakahama, Koji Nakamura, Tomoaki Nakamura, Hajime Nanjo, Fabrizio Napolitano, Roger Naranjo Garcia, Rohin Thampilali Narayan, Naryshkin Iurii, Mohsen Naseri, Thomas Naumann, Gabriela Alejandra Navarro, Polina Nechaeva, Filip Nechansky, Thomas Neep, Andrea Negri, Matteo Negrini, Clara Nellist, Christina Nelson, Michael Nelson, Stanislav Nemecek, Marzio Nessi, Mark Neubauer, Friedemann Neuhaus, Neumann, Manuel, Robin Newhouse, Paul Newman, Chi Wing Ng, Ng, Yan Wing, Ng, Ying Wun Yvonne, Badr-eddine Ngair, Nguyen, Hoang Dai Nghia, Tuan Nguyen, Emery Nibigira, Richard Nickerson, Nicolaidou, R., Daniel Stefaniak Nielsen, Jason Nielsen, Marcel Niemeyer, Nikiforos Nikiforou, Vladimir Nikolaenko, Irena Nikolic-Audit, Konstantinos Nikolopoulos, Paul Nilsson, Herjuno Nindhito, Aleandro Nisati, Nishu, N., Richard Nisius, Nitsche, Isabel, Tatsumi Nitta, Takuya Nobe, Daniel Noel, Yohei Noguchi, Ioannis Nomidis, Nomura, Marcelo Ayumu, Nordberg, Markus, Novak, Jakob, Tadej Novak, Olga Novgorodova, Radek Novotny, Nozka, Libor, Konstantinos Ntekas, Nurse, Emily, Frank Gerald Oakham, Oberlack, Horst, José Ocariz, Atsuhiko Ochi, Inês Ochoa, Ochoa-Ricoux, J. 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G., Osamu Sasaki, Koji Sato, Frank Sauerburger, Emmanuel Sauvan, Pierre Savard, Ryu Sawada, Craig Sawyer, Lee Sawyer, Sayago Galvan, Ivan, carla sbarra, Antonio Sbrizzi, Timothy Scanlon, Jana Schaarschmidt, Peter Schacht, Douglas Schaefer, Leigh Schaefer, Uli Schaefer, Arthur Schaffer, Dorothee Schaile, Dean Schamberger, R., Eric Schanet, Christian Scharf, Nicolas Scharmberg, Valery Schegelsky, Daniel Scheirich, Ferdinand Schenck, Michael Schernau, Carlo Schiavi, Lara Katharina Schildgen, Zachary Schillaci, Enrico Junior Schioppa, marco schioppa, Schleicher, Katharina E., Stefan Schlenker, Korbinian Schmidt-Sommerfeld, Kristof Schmieden, Christian Schmitt, Stefan Schmitt, Laurent Schoeffel, Andre Schöning, Patrick Scholer, Elisabeth Schopf, Matthias Schott, Jeroen Schouwenberg, Jaroslava Schovancová, Steven Schramm, Frederic Schröder, Alexandra Schulte, Hans-Christian Schultz-Coulon, Markus Schumacher, Bruce Schumm, Philippe Schune, Ariel Schwartzman, Thomas Schwarz, Philippe Schwemling, Reinhard Schwienhorst, Andrea Sciandra, Gabriella Sciolla, Matteo Scornajenghi, Fabrizio Scuri, Scutti, Federico, Ludovic Michel Scyboz, Cristiano Sebastiani, Pienpen Seema, Sally Seidel, Abraham Seiden, Blair Seidlitz, Todd Seiss, Claudia Seitz, Jose Seixas, Givi Sekhniaidze, Stephen Sekula, Nicola Semprini Cesari, Sourav Sen, Cédric Serfon, Serin, Laurent, Leonid Serkin, Marco Sessa, Horst Severini, Stanislava Sevova, Federico Sforza, Anna Sfyrla, Elizaveta Shabalina, Jeffrey Shahinian, Nabila Wahab Shaikh, Dan Shaked Renous, Marjorie Shapiro, Abhishek Sharma, Pavel Shatalov, KATE SHAW, Savanna Shaw, Shehade, Mahran, Shen, Yu-Ting, Sherman, Alexander David, Peter Sherwood, Liaoshan Shi, Chase Shimmin, Shimogama, Yoshihiro, Makoto Shimojima, James Shinner, Ian Shipsey, Shohei Shirabe, Mariya Shiyakova, Jonathan Shlomi, Shmeleva, Alevtina, Melvyn Shochet, Seyed Ruhollah Shojaii, Shope, David Richard, Suyog Shrestha, Esra Mohammed Shrif, Maheyer Jamshed Shroff, Shulga, E., Sicho, Petr, Anne Sickles, Elias Sideras-Haddad, Ourania Sidiropoulou, Antonio Sidoti, Frank Siegert, Sijacki, Djordje, Manuel Silva, Marcos Vinicius Silva Oliveira, Samuel Silverstein, Simion, Stefan, Rosa Simoniello, Simpson-Allsop, Cameron James, Sinem Simsek, Sinervo, P., Viktor Sinetckii, Sundeep Singh, Maximiliano Sioli, Ismet Siral, Sergey Sivoklokov, Jörgen Sjölin, Ali, Skorda, Eleni, Patrick Skubic, Magdalena Slawinska, Krzysztof Sliwa, Radim Slovak, Smakhtin, Vladimir, Ben Smart, Juraj Smiesko, Nikita Smirnov, Sergei Smirnov, Yury Smirnov, Smirnova, L. N., Smirnova, Oxana, Emily Smith, Hayden Smith, Maria Smizanska, Karel Smolek, Andrzej Smykiewicz, Andrei Snesarev, Hella Snoek, Ian Snyder, scott snyder, Randall Sobie, Abner Soffer, Andreas Søgaard, Fabian Sohns, Carlos Antonio Solans Sanchez, Evgeny Soldatov, Alexander Solodkov, Alexei Soloshenko, Oleg Solovyanov, Victor Solovyev, Philip Sommer, Hyungsuk Son, Anil Sonay, Weimin Song, Wen Yi Song, Andre Sopczak, Sopio, Alexander Linus, Filomena Sopkova, Simone Sottocornola, Rachik Soualah, Andrey Sukharev, David South, stefania spagnolo, Margherita Spalla, Martin Spangenberg, Francesco Spanò, Dennis Sperlich, Thomas Spieker, GIANCARLO SPIGO, Mario Spina, Dwayne Spiteri, Martin Spousta, Alberto Stabile, Brianna Dwyer, Rainer Stamen, Marko Stamenkovic, Alexios Stampekis, Ewa Stanecka, Beojan Stanislaus, Marcel Stanitzki, Migle Stankaityte, Birgit Stapf, Evgeny Starchenko, Giordon Stark, Jan Stark, Pavel Staroba, Pavel Starovoitov, Steffen Stärz, Rafał Staszewski, Georgios Stavropoulos, Stegler, Martin, Peter Steinberg, Amanda Steinhebel, Bernd Stelzer, Joerg Stelzer, Oliver Stelzer-Chilton, Hasko Stenzel, Thomas Stevenson, Stewart, Graeme A., Mark Stockton, Gabriel Stoicea, Stolarski, M., Stefan Stonjek, Arno Straessner, Jonas Strandberg, Sara Strandberg, Michael Strauss, Thomas Strebler, Pavol Strizenec, Raimund Ströhmer, David Strom, Ryszard Stroynowski, Antonia Strubig, Stefania Stucci, Bjarne Stugu, Iii, John Stupak, Nicholas Styles, Dong Su, Wanyun Su, Xiaowen Su, VLADIMIR SULIN, Matthew Sullivan, Sultan, D. M. S., Saleh Sultansoy, Toshi Sumida, Siyuan Sun, Xiaohu Sun, Carl Joseph Edmund Suster, Mark Sutton, Shota Suzuki, Michal Svatos, Maximilian Swiatlowski, Swift, Stewart Patrick, Thorben Swirski, Sydorenko, Alexander, Ivan Sykora, Martin Sykora, Tomáš Sýkora, Duc Bao Ta, Kerstin Tackmann, Kinghorn-Taenzer, Joseph Peter, Anyes Taffard, Reda Tafirout, Emin Tagiev, Takashima, Ryuichi, Kosuke Takeda, Tohru Takeshita, Emily Takeva, Yosuke Takubo, Mossadek Talby, Talyshev, Alexey, Tam, Kai Chung, Tamir, Nadav Michael, Junichi Tanaka, Reisaburo Tanaka, Sebastian Tapia, Stefan Tapprogge, Ahmed Tarek Abouelfadl Mohamed, Shlomit Tarem, Khuram Tariq, Grigore Tarna, Giuseppe Francesco Tartarelli, Petr Tas, Marek Tasevsky, Tassi, Enrico, Tavares Delgado, Ademar, yahya tayalati, Alan Taylor, GEOFFREY TAYLOR, Wendy Taylor, Teagle, Hamish, Tee, Amy Selvi, Rafael Teixeira de Lima, Pedro Teixeira-Dias, Ten Kate, Herman, Jia Jian Teoh, Koji Terashi, JUAN TERRON, Stefano Terzo, Marianna Testa, Richard Teuscher, Savannah Thais, Neofytos Themistokleous, Timothée Theveneaux-Pelzer, Thiele, Fabian A. J., Thomas, David William, Thomas, James Oscar, Juergen Thomas, Emily Anne Thompson, Paul Thompson, Evelyn Thomson, Edward Thorpe, Royer Edson Ticse Torres, Vladimir Tikhomirov, Yuriy Tikhonov, Timoshenko, Sergey, Paul Tipton, Sylvain Tisserant, Kazuki Todome, Sarka Todorova, Todt, Stefanie, Junji Tojo, Stanislav Tokar, Katsuo Tokushuku, Emma Tolley, Rupert Tombs, Kehinde Tomiwa, Makoto Tomoto, Lauren Tompkins, Peter Tornambe, Eric Torrence, Heberth Torres, Emma Torro Pastor, Mariana Toscani, Cecilia Tosciri, Jozsef Toth, Daniel Tovey, Traeet, Are Sivertsen, Colleen Treado, Thomas Trefzger, Fabio Tresoldi, Alessandro, Isabel Trigger, Sophie Trincaz-Duvoid, Dominique Trischuk, Trischuk, William, Trocme, Benjamin, Artur Trofymov, Clara Troncon, Fabrizio Trovato, Thi Ngoc Loan Truong, Maciej Trzebinski, Adam Trzupek, Fang-Ying Tsai, Jeffrey Tseng, Tsiareshka, Pavel, Apostolos Tsirigotis, Vakhtang Tsiskaridze, Tskhadadze, Edisher, MARIA EVANTHIA TSOPOULOU, Ilya Tsukerman, Vakhtang Tsulaia, Soshi Tsuno, Dmitri Tsybychev, Tu, Y., Alexandra Tudorache, Valentina Tudorache, Tulbure, Traian Tiberiu, Alexander Tuna, Semen Turchikhin, Daniel Turgeman, Turk Cakir, Ilkay, Turner, Russell James, Ruggero Turra, Philip Tuts, Tzamarias, Spyros, Eftychia Tzovara, Uchida, Kenta, Fumihiko Ukegawa, Guillaume Unal, Mesut Ünal, Alexander Undrus, Unel, Gokhan, Francesca Ungaro, Yoshinobu Unno, Kenta Uno, Jozef Urban, PHILLIP URQUIJO, Giulio Usai, zekeriya uysal, Vacek, Vaclav, Brigitte Vachon, Knut Oddvar Høie Vadla, Theodoros Vafeiadis, Amal Vaidya, Chrysostomos Valderanis, Eduardo Valdes Santurio, Marco Valente, Sara Valentinetti, Alberto Valero, Loïc Valéry, Robert Vallance, Vallier, Alexis Roger Louis, Valls Ferrer, Juan Antonio, Tal van Daalen, Peter van Gemmeren, Samuel Van Stroud, Ivo van Vulpen, Marco Vanadia, Wainer Vandelli, Maxence Vandenbroucke, Evan Van de Wall, Aleksandr Vanyashin, damiano vannicola, Riccardo Vari, Erich Varnes, Carlo Varni, Tulin Varol, Dimitris Varouchas, 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Yi-Lin Yang, Yang, Zhe, Wei-Ming Yao, Yee Chinn Yap, Elena Yatsenko, Hanfei Ye, Jingbo Ye, Shuwei Ye, Ivan Yeletskikh, Melissa Yexley, Efe Yigitbasi, Pengqi Yin, Kohei Yorita, Keisuke Yoshihara, Christopher Young, Charles Young, Jie Yu, Rui Yuan, Xiaoguang Yue, Mohamed Zaazoua, Bartłomiej Żabiński, Georgios Zacharis, Ettore Zaffaroni, Jad Mathieu Sardain, Alexandre Zaitsev, Tamar Zakareishvili, Nataliia Zakharchuk, Stefano Zambito, Daniele Zanzi, Sonja Verena Zeißner, Christian Zeitnitz, Gabija Zemaityte, Jian Cong Zeng, Oleg Zenin, Tibor Zenis, Dirk Zerwas, Miha Zgubic, Zhang, Bowen, Dengfeng Zhang, Gang Zhang, Jinlong Zhang, Kaili Zhang, Lei Zhang, Liqing Zhang, Matt Zhang, Rui Zhang, Zhang, Shuzhou, Xiangke Zhang, xueyao zhang, Yu Zhang, Zhang, Zhidong, Zhiqing Zhang, Pingchuan Zhao, Zhao, Zhengguo, Alexey Zhemchugov, Zheng, Zhi, Dewen Zhong, Zhou, Bing, Chen Zhou, Hao Zhou, Maosen Zhou, Mingliang Zhou, Ning Zhou, Zhou, You, chengguang zhu, Chenzheng Zhu, Heling Zhu, Hongbo Zhu, Junjie Zhu, Yingchun Zhu, Xuai Zhuang, Konstantin Zhukov, Vladimir Zhulanov, Daria Zieminska, Nikolai Zimine, Stephanie Zimmermann, Zinonos, Zinonas, Ziolkowski, Michael, Lidija Zivkovic, Georg Zobernig, Antonio Zoccoli, Knut Zoch, Theodore Georgio Zorbas, Rui Zou, and Lukasz Zwalinski

43. Two-particle Bose-Einstein correlations in pp collisions at ${\sqrt{s} = 13}$ TeV measured with the ATLAS detector at the LHC

Author: Georges Aad, Braden Abbott, Dale Abbott, Adam Abed Abud, Kira Abeling, Deshan Abhayasinghe, Syed Haider Abidi, Ossama Sherif Alexander AbouZeid, Abraham, Nicola Louise, Halina Abramowicz, Abreu, Henso, Yiming Abulaiti, Bobby Acharya, Baida Achkar, SHUNSUKE ADACHI, Lennart Adam, Claire Bourdarios, Leszek Adamczyk, Lukas Adamek, Jahred Adelman, Adersberger, Michael, Aytul Adiguzel, Sofia Adorni Braccesi Chiassi, Tim Adye, Anthony Affolder, Yoav Afik, Christina Agapopoulou, Merve Nazlim Agaras, Anamika Aggarwal, Agheorghiesei, Catalin, Juan Antonio Aguilar Saavedra, Faig Ahmadov, waleed syed ahmed, Xiaocong Ai, Giulio Aielli, Shunichi Akatsuka, Torsten Akesson, ECE AKILLI, Andrey Akimov, konie al khoury, Gian Luigi Alberghi, Justin Albert, Maria Josefina Alconada Verzini, Sara Alderweireldt, Martin Aleksa, Igor Alexandrov, Calin Alexa, Alexandre, Didier, Theodoros Alexopoulos, Alice Alfonsi, Muhammad Alhroob, Babar Ali, Gianluca Alimonti, John Alison, Alkire, Steve, Corentin Allaire, Benedict Allbrooke, Benjamin Allen, Philip Allport, Alberto Aloisio, Alejandro Alonso, Francisco Alonso, Cristiano Alpigiani, Alshehri, Azzah Aziz, Manuel Alvarez Estevez, Damián Álvarez Piqueras, Mariagrazia Alviggi, Yara Coutinho, Alessandro Ambler, Luca Ambroz, Amelung, Christoph, Dante Amidei, Susana Amor Santos, Simone Amoroso, Amrouche, Cherifa Sabrina, Fenfen An, Christos Anastopoulos, Nansi Andari, Timothy Andeen, Christoph Falk Anders, John Anders, Andreazza, Attilio, Andrei, Victor, Anelli, Christopher Ryan, Stylianos Angelidakis, Aaron Angerami, Alexey Anisenkov, Alberto Annovi, Claire Antel, Matthew Anthony, Mario Antonelli, Daniel Antrim, Fabio Anulli, Masato Aoki, Javier Alberto Aparisi Pozo, Ludovica Aperio Bella, Arabidze, Giorgi, Juan Pedro Araque Espinosa, Victor Araujo Ferraz, Pereira, Rodrigo, Chiara Arcangeletti, Ayana Holloway Arce, Arduh, Francisco Anuar, Jean-Francois Arguin, Spyridon Argyropoulos, Jan-Hendrik Arling, Aaron Armbruster, Alexander Armstrong, Olivier Arnaez, Hannah Arnold, Giacomo Artoni, Artz, Sebastian, Shoji Asai, Nedaa Alexandra Asbah, Eleni Myrto Asimakopoulou, lily asquith, Assamagan, Ketevi Adikle, Robert Astalos, Ryan Atkin, Atkinson, Markus Julian, Naim Bora Atlay, Atmani, Hicham, Kamil Augsten, Giuseppe Avolio, Rachel Maria Avramidou, Mohamad Kassem Ayoub, Azoulay, Adam, Georges Azuelos, Baca, Matt, Henri Bachacou, Konstantinos Bachas, Moritz Backes, Filip Backman, Paolo Bagnaia, Bahrasemani, Sina, Adam Bailey, Virginia Bailey, John Baines, Milena Bajic, Christos Bakalis, Oliver Baker, Pepijn Bakker, Debottam BakshiGupta, Shyam Balaji, Evgenii Baldin, Petr Balek, Fabrice Balli, William Balunas, Johannes Balz, Elżbieta Banaś, Anjishnu Bandyopadhyay, swagato banerjee, Arwa Bannoura, Liron Barak, William Barbe, Elisabetta Barberio, Dario Barberis, Marlon, Barillari Teresa, Martin Barisits, Jason Barkeloo, Timothy Barklow, Barnea, Rotem, Barnes, Sarah Louise, Bruce Barnett, Michael Barnett, Zuzana Blenessy, Antonio Baroncelli, Gaetano Barone, Alan Barr, Laura Barranco Navarro, Fernando Barreiro, Joao Guimaraes da Costa, Sergey Barsov, Rainer Bartoldus, Giovanni Bartolini, Adam Barton, Pavol Bartos, Artem Basalaev, Ahmed Bassalat, richard bates, Batista, Santiago, Batlamous, Souad, Richard Batley, Binish Batool, Battaglia, Marco, Matteo Bauce, Florian Bauer, Bauer, Kevin Thomas, Bawa, Harinder Singh, James Beacham, Tristan Beau, Pierre-Hugues Beauchemin, Fabian Becherer, Philip Bechtle, Beck, Helge Christoph, Hans Peter Beck, Kathrin Becker, Becker, Maurice, Cyril Becot, Beddall, Ayda, Andrew Beddall, Vadim Bednyakov, Matteo Bedognetti, Christopher Bee, Thomas Beermann, Marcia Begalli, Michael Begel, Arabinda Behera, Katharina Behr, J., Florian Beisiegel, Andrew Bell, Gideon Bella, Lorenzo Bellagamba, Alain Bellerive, Panagiotis Bellos, Konstantin Beloborodov, Konstantin Belotsky, Nikita Belyaev, Driss Benchekroun, Nektarios Benekos, yan benhammou, Douglas Benjamin, Mathieu Benoit, James Bensinger, Stan Bentvelsen, Lydia Beresford, Matteo Mario Beretta, David Berge, Elin Bergeaas Kuutmann, Nicolas Berger, Benedikt Ludwig Bergmann, Laura, Juerg Beringer, Simon, Nathan Bernard, Gregorio Bernardi, Catrin Bernius, Florian Bernlochner, Tracey Berry, Peter Berta, Claudia Bertella, Iain Alexander Bertram, Geert-Jan Besjes, Olga Bessidskaia Bylund, Nathalie Besson, Agni Bethani, Siegfried Bethke, Alessandra Betti, Adrian Bevan, Julien-Christopher Beyer, Bi, Runyu, Riccardo Maria Bianchi, Otmar Biebel, Dustin Biedermann, Rafal Bielski, Katharina Bierwagen, Nicolò Vladi Biesuz, Michela Biglietti, Thomas Billoud, Marcello Bindi, Ahmet Bingul, Cesare Bini, Silvia Biondi, Mattias Birman, Bisanz, Tobias, Jyoti Prakash Biswal, Diptaparna Biswas, Alexander Bitadze, Carsten Bittrich, Kristian Bjørke, Kevin Black, Tomas Blazek, Ingo Bloch, Craig Blocker, Andrew Blue, Ulla Blumenschein, gerard jan bobbink, Viktor Bobrovnikov, Bocchetta, Simona, Andrea Bocci, Danijela Bogavac, Alexander Bogdanchikov, Bohm, Christian, Veronique Boisvert, Petar Bokan, Tomasz Bold, Alexey Boldyrev, Arthur Eugen Bolz, Marco Bomben, Marcella Bona, Johan Bonilla, Maarten Boonekamp, Hanna Borecka-Bielska, Borisov, Anatoli, Guennadi Borissov, Jonathan Bortfeldt, Daniela Bortoletto, Bortolotto, Valerio, Davide Boscherini, Martine Bosman, Jonathan David Bossio Sola, Khalil Bouaouda, Joseph Boudreau, Evelina Bouhova-Thacker, Boumediene, Djamel, Sarah Boutle, Antonio Boveia, James Boyd, Diallo Boye, Igor Boyko, Adam Bozson, Juraj Bracinik, Brahimi, Nihal, Gerhard Immanuel Brandt, Oleg Brandt, Früd Braren, Benjamin Brau, Brau, James E., Breaden Madden, Will, Kurt Brendlinger, Lydia Brenner, Richard Brenner, Shikma Bressler, Bernard Brickwedde, Daniel Briglin, David Britton, Britzger Daniel, Ian Brock, Raymond Brock, Gustaaf Brooijmans, William Brooks, Elizabeth Brost, James Broughton, Pawel Bruckman de Renstrom, Dusan Bruncko, Alessia Bruni, Graziano Bruni, Lucrezia Stella Bruni, Salvatore bruno, Benjamin Brunt, Marco Bruschi, Nello Bruscino, Patrick Bryant, Lene Kristian Bryngemark, Trygve Buanes, Quentin Buat, Peter Buchholz, Andy Buckley, Ioulian Budagov, Magnar Kopangen Bugge, Felix Bührer, Oleg Bulekov, Tyler James Burch, Sergey Burdin, Carsten Burgard, Angela Burger, Blake Burghgrave, Jonathan Burr, Jackson Burzynski, Volker Buescher, Buschmann, Eric, peter bussey, John Butler, Craig Buttar, Jonathan Butterworth, Butti, Pierfrancesco, William Buttinger, Adrian Buzatu, Alexey Buzykaev, Grazia Cabras, Susana Cabrera Urbán, Davide Caforio, Huacheng Cai, Valentina Maria Martina Cairo, Cakir, Orhan, Noemi Calace, Paolo Calafiura, Calandri Alessandro, Giovanni Calderini, Philippe Calfayan, Giuseppe Callea, Caloba, Luiz, Sergio Calvente Lopez, David Calvet, Samuel Calvet, Thomas Calvet, Milene Calvetti, Reina Coromoto Camacho Toro, Stefano Camarda, Daniel Camarero, Paolo Camarri, David Cameron, Roger Caminal Armadans, Clément Camincher, Campana, Simone, Mario Campanelli, Alessandra Camplani, Angel Campoverde, Vincenzo Canale, Auriane Canesse, Marc Bret Cano, Josu Cantero García, Tingting Cao, Yumeng Cao, Mar Capeans, Marcella Capua, Roberto Cardarelli, Fabio Cardillo, Giovandomenico Carducci, Ina Carli, Tancredi Carli, Gianpaolo Carlino, Benjamin Carlson, LEONARDO CARLO CARMINATI, Rebecca Carney, Sascha, Edson Carquin, SONIA CARRA, Joseph Carter, María Pilar Casado Lechuga, Casha, Albert Francis, David Casper, Castelijn, Remco Johannes, Florencia Luciana Castillo, Maria Victoria Castillo, Nuno Castro, Andrea Catinaccio, James Catmore, Cattai, Ariella, Julien Caudron, Viviana Cavaliere, Emanuele Cavallaro, Vincenzo Cavasinni, Emre Celebi, Leonor Cerda Alberich, Karel Černý, Augusto Cerqueira, alessandro cerri, Lucio Cerrito, Fabio Cerutti, Alberto Cervelli, SERKANT ALİ ÇETİN, Zakaria Chadi, dhiman chakraborty, Chan, Stephen Kam-Wah, Wing Sheung Chan, Chan, Wai Yuen, John Chapman, Bakar Chargeishvili, David Charlton, Thomas Charman, Chav Chhiv Chau, 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Cochran Jr, James Herbert, Cohen, Hadar, Artur Coimbra, Luca Colasurdo, Brian Cole, Colijn, Auke-Pieter, Johann Collot, Conde Muino, P., Elias Coniavitis, Simon Connell, Ian Connelly, Constantinescu, Serban, Francesco Alessandro Conventi, Amanda Cooper-Sarkar, Felix Cormier, Cormier, Kyle James Read, Louie Corpe, Massimo Corradi, Eric Edward Corrigan, Francois Corriveau, Costa Mezquita, Francesco Costanza, Davide Costanzo, Glen Cowan, James Cowley, Jonathan Crane, Kyle Cranmer, Crawley, Samuel Joseph, Rachael Creager, Sabine Crépé-Renaudin, Francesco Crescioli, Markus Cristinziani, Vincent Alexander Croft, Nanni Crosetti, Ana Rosario Cueto Gómez, Tulay Cuhadar Donszelmann, Aviv Cukierman, Sabina Czekierda, Patrick Czodrowski, Mário José Cunha Sargedas Sousa, JOAO VICTOR DA FONSECA PINTO, Cinzia Da Via, Wladyslaw Dabrowski, Tomas Dado, Salah-eddine Dahbi, Tiesheng Dai, Carlo Dallapiccola, Mogens Dam, Amen, Gabriele D., Amico, Valerio D., Johannes Damp, Jeffrey Dandoy, Maria Florencia 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Dreyer, Timo Dreyer, Alec Drobac, Duan, Yanyun, Filipp, Michal Dubovsky, Arnaud Dubreuil, Ehud Duchovni, Guenter Duckeck, Audrey Ducourthial, Otilia Ducu, Dominik Duda, Alexey Dudarev, Andreas Düdder, Duffield, Emily Marie, Laurent Duflot, Michael Duehrssen-Debling, Carsten Dülsen, Mirta Dumancic, Dumitriu Ana Elena, Anna Duncan, Monica Dunford, Arnaud Duperrin, Hatice, Michael Düren, Archil Durglishvili, Duschinger, Dirk Uwe, Baishali Dutta, Damir Duvnjak, Brianna Dwyer, George Ian Dyckes, Mateusz Dyndal, Samuel Dysch, Bartosz Dziedzic, Ecker, Katharina Maria, Edgar, Ryan Christopher, Eggleston, Michael Glenn, Till Eifert, Gerald Eigen, Kevin Einsweiler, Tord Ekelof, Hassnae El Jarrari, El Kacimi, Mohamed, El Kosseifi, Rima, Venugopal Ellajosyula, Mattias Ellert, Frank Ellinghaus, Alison Elliot, Nicolas Ellis, Johannes Elmsheuser, Markus Elsing, Dmitry Emeliyanov, Alexander Emerman, Yuji Enari, Matthew Epland, Johannes Erdmann, Antonio Ereditato, Martin Errenst, Marc Escalier, Carlos 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