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Titolo:
Single and multi-photon events with missing energy e(+)e(-)collisions at root s=189 GeV
Autore:
Acciarri, M; Achard, P; Adriani, O; Aguilar-Benitez, M; Alcaraz, J; Alemanni, G; Allaby, J; Aloisio, A; Alviggi, MG; Ambrosi, G; Anderhub, H; Andreev, VP; Angelescu, T; Anselmo, F; Arefiev, A; Azemoon, T; Aziz, T; Bagnaia, P; Baksay, L; Balandras, A; Ball, RC; Banerjee, S; Banerjee, S; Barczyk, A; Barillere, R; Barone, L; Bartalini, P; Basile, M; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Bellucci, L; Berdugo, J; Berges, P; Bertucci, B; Betev, BL; Bhattacharya, S; Biasini, M; Biland, A; Blaising, JJ; Blyth, SC; Bobbink, GJ; Bohm, A; Boldizsar, L; Borgia, B; Bourilkov, D; Bourquin, M; Braccini, S; Branson, JG; Brigljevic, V; Brochu, F; Buffini, A; Buijs, A; Burger, JD; Burger, WJ; Busenitz, J; Button, A; Cai, XD; Campanelli, M; Capell, M; Romeo, GC; Carlino, G; Cartacci, AM; Casaus, J; Castellini, G; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Cesaroni, F; Chamizo, M; Chang, YH; Chaturvedi, UK; Chemarin, M; Chen, A; Chen, G; Chen, GM; Chen, HF; Chen, HS; Chereau, X; Chiefari, G; Cifarelli, L; Cindolo, F; Civinini, C; Clare, I; Clare, R; Coignet, G; Colijn, AP; Colino, N; Costantini, S; Cotorobai, F; Cozzoni, B; de la Cruz, B; Csilling, A; Cucciarelli, S; Dai, TS; van Dalen, JA; DAlessandro, R; de Asmundis, R; Deglon, P; Degre, A; Deiters, K; della Volpe, D; Denes, P; DeNotaristefani, F; De Salvo, A; Diemoz, M; van Dierendonck, D; Di Lodovico, F; Dionisi, C; Dittmar, M; Dominguez, A; Doria, A; Dova, MT; Duchesneau, D; Dufournaud, D; Duinker, P; Duran, I; El Mamouni, H; Engler, A; Eppling, FJ; Erne, FC; Extermann, P; Fabre, M; Faccini, R; Falagan, MA; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Ferguson, T; Ferroni, F; Fesefeldt, H; Fiandrini, E; Field, JH; Filthaut, F; Fisher, PH; Fisk, I; Forconi, G; Fredj, L; Freudenreich, K; Furetta, C; Galaktionov, Y; Ganguli, SN; Garcia-Abia, P; Gataullin, M; Gau, SS; Gentile, S; Gheordanescu, N; Giagu, S; Gong, ZF; Grenier, G; Grimm, O; Gruenewald, MW; Guida, M; van Gulik, R; Gupta, VK; Gurtu, A; Gutay, LJ; Haas, D; Hasan, A; Hatzifotiadou, D; Hebbeker, T; Herve, A; Hidas, P; Hirschfelder, J; Hofer, H; Holzner, G; Hoorani, H; Hou, SR; Iashvili, I; Jin, BN; Jones, LW; de Jong, P; Josa-Mutuberria, I; Khan, RA; Kamrad, D; Kaur, M; Kienzle-Focacci, MN; Kim, D; Kim, DH; Kim, JK; Kim, SC; Kirkby, J; Kiss, D; Kittel, W; Klimentov, A; Konig, AC; Kopp, A; Korolko, I; Koutsenko, V; Kraber, M; Kraemer, RW; Krenz, W; Kunin, A; de Guevara, PL; Laktineh, I; Landi, G; Lassila-Perini, K; Laurikainen, P; Lavorato, A; Lebeau; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Le Coultre, P; Lee, HJ; Le Goff, JM; Leiste, R; Leonardi, E; Levtchenko, P; Li, C; Lin, CH; Lin, WT; Linde, FL; Lista, L; Liu, ZA; Lohmann, W; Longo, E; Lu, YS; Lubelsmeyer, K; Luci, C; Luckey, D; Lugnier, L; Luminari, L; Lustermann, W; Ma, WG; Maity, M; Malgeri, L; Malinin, A; Mana, C; Mangeol, D; Marchesini, P; Marian, G; Martin, JP; Marzano, F; Massaro, GGG; Mazumdar, K; McNeil, RR; Mele, S; Merola, L; Meschini, M; Metzger, WJ; von der Mey, M; Mihul, A; Milcent, H; Mirabelli, G; Mnich, J; Mohanty, GB; Molnar, P; Monteleoni, B; Moulik, T; Muanza, GS; Muheim, F; Muijs, AJM; Musy, M; Napolitano, M; Nessi-Tedaldi, F; Newman, H; Niessen, T; Nisati, A; Nowak, H; Oh, YD; Organtini, G; Ostonen, R; Palomares, C; Pandoulas, D; Paoletti, S; Paolucci, P; Paramatti, R; Park, HK; Park, IH; Pascale, G; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, F; Peach, D; Pedace, M; Pensotti, S; Perret-Gallix, D; Petersen, B; Piccolo, D; Pierella, F; Pieri, M; Piroue, PA; Pistolesi, E; Plyaskin, V; Pohl, M; Pojidaev, V; Postema, H; Pothier, J; Produit, N; Prokofiev, DO; Prokofiev, D; Quartieri, J; Rahal-Callot, G; Rahaman, MA; Raics, P; Raja, N; Ramelli, R; Rancoita, PG; Raven, G; Razis, P; Ren, D; Rescigno, M; Reucroft, S; van Rhee, T; Riemann, S; Riles, K; Robohm, A; Rodin, J; Roe, BP; Romero, L; Rosca, A; Rosier-Lees, S; Rubio, JA; Ruschmeier, D; Rykaczewski, H; Saremi, S; Sarkar, S; Salicio, J; Sanchez, E; Sanders, MP; Sarakinos, ME; Schafer, C; Schegelsky, V; Schmidt-Kaerst, S; Schmitz, D; Schopper, H; Schotanus, DJ; Schwering, G; Sciacca, C; Sciarrino, D; Seganti, A; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shumilov, E; Shvorob, A; Siedenburg, T; Son, D; Smith, B; Spillantini, P; Steuer, M; Stickland, DP; Stone, A; Stone, H; Stoyanov, B; Straessner, A; Sudhakar, K; Sultanov, G; Sun, LZ; Suter, H; Swain, JD; Szillasi, Z; Sztaricskai, T; Tang, XW; Tauscher, L; Taylor, L; Timmermans, C; Ting, SCC; Ting, SM; Tonwar, SC; Toth, J; Tully, C; Tung, KL; Uchida, Y; Ulbricht, J; Valente, E; Vesztergombi, G; Vetlitsky, I; Vicinanza, D; Viertel, G; Villa, S; Vivargent, M; Vlachos, S; Vodopianov, I; Vogel, H; Vogt, H; Vorobiev, I; Vorobyov, AA; Vorvolakos, A; Wadhwa, M; Wallraff, W; Wang, M; Wang, XL; Wang, ZM; Weber, A; Weber, M; Wienemann, P; Wilkens, H; Wu, SX; Wynhoff, S; Xia, L; Xu, ZZ; Yang, BZ; Yang, CG; Yang, HJ; Yang, M; Ye, JB; Yeh, SC; Zalite, A; Zalite, Y; Zhang, ZP; Zhu, GY; Zhu, RY; Zichichi, A; Ziegler, F; Zilizi, G; Zoller, M;
Indirizzi:
Ist Nazl Fis Nucl, Sez Milan, I-20133 Milan, Italy Ist Nazl Fis Nucl Milan Italy I-20133 l, Sez Milan, I-20133 Milan, Italy Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany Rhein Westfal TH Aachen Aachen Germany D-52056 , D-52056 Aachen, Germany Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany Rhein Westfal TH Aachen Aachen Germany D-52056 , D-52056 Aachen, Germany NIKHEF, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands NIKHEF Amsterdam Netherlands NL-1009 DB L-1009 DB Amsterdam, Netherlands Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands NL-1009 DB B Amsterdam, Netherlands Univ Michigan, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 iv Michigan, Ann Arbor, MI 48109 USA CNRS, IN2P3, LAPP, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France CNRS Annecy Le Vieux France F-74941 les, F-74941 Annecy Le Vieux, France Univ Basel, Inst Phys, CH-4056 Basel, Switzerland Univ Basel Basel Switzerland CH-4056 st Phys, CH-4056 Basel, Switzerland Louisiana State Univ, Baton Rouge, LA 70803 USA Louisiana State Univ Baton Rouge LA USA 70803 , Baton Rouge, LA 70803 USA Inst High Energy Phys, Beijing 100039, Peoples R China Inst High Energy Phys Beijing Peoples R China 100039 39, Peoples R China Humboldt Univ, D-10099 Berlin, Germany Humboldt Univ Berlin Germany D-10099 boldt Univ, D-10099 Berlin, Germany Univ Bologna, I-40126 Bologna, Italy Univ Bologna Bologna Italy I-40126Univ Bologna, I-40126 Bologna, Italy Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy Ist Nazl Fis Nucl Bologna Italy I-40126 Bologna, I-40126 Bologna, Italy Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India Tata Inst Fundamental Res Bombay Maharashtra India 400005 arashtra, India Northeastern Univ, Boston, MA 02115 USA Northeastern Univ Boston MA USA 02115 heastern Univ, Boston, MA 02115 USA Inst Atom Phys, R-76900 Bucharest, Romania Inst Atom Phys Bucharest Romania R-76900 hys, R-76900 Bucharest, Romania Univ Bucharest, R-76900 Bucharest, Romania Univ Bucharest Bucharest Romania R-76900 est, R-76900 Bucharest, Romania Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary Hungarian Acad Sci Budapest Hungary 114 ys, H-1525 Budapest 114, Hungary MIT, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Cambridge, MA 02139 USA Lajos Kossuth Univ, ATOMKI, H-4010 Debrecen, Hungary Lajos Kossuth Univ Debrecen Hungary H-4010 MKI, H-4010 Debrecen, Hungary Univ Florence, I-50125 Florence, Italy Univ Florence Florence Italy I-50125 v Florence, I-50125 Florence, Italy Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy Ist Nazl Fis NuclFlorence Italy I-50125 irenze, I-50125 Florence, Italy CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23 Particle Phys, CH-1211 Geneva 23, Switzerland World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland World Lab Geneva Switzerland 23 Project, CH-1211 Geneva 23, Switzerland Univ Geneva, CH-1211 Geneva 4, Switzerland Univ Geneva Geneva Switzerland 4 v Geneva, CH-1211 Geneva 4, Switzerland Univ Sci & Technol China, Anhua 230029, Peoples R China Univ Sci & TechnolChina Anhua Peoples R China 230029 9, Peoples R China SEFT, Res Inst High Energy Phys, SF-00014 Helsinki, Finland SEFT Helsinki Finland SF-00014 h Energy Phys, SF-00014 Helsinki, Finland Univ Lausanne, CH-1015 Lausanne, Switzerland Univ Lausanne Lausanne Switzerland CH-1015 CH-1015 Lausanne, Switzerland Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy Ist Nazl Fis Nucl Lecce Italy I-73100 l, Sez Lecce, I-73100 Lecce, Italy Univ Lecce, I-73100 Lecce, Italy Univ Lecce Lecce Italy I-73100Univ Lecce, I-73100 Lecce, Italy Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 on, F-69622 Villeurbanne, France CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain CIEMAT Madrid Spain E-28040 oambientales & Tecnol, E-28040 Madrid, Spain ITEP, Moscow, Russia ITEP Moscow RussiaITEP, Moscow, Russia Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy Ist Nazl Fis Nucl Naples Italy I-80125 Sez Napoli, I-80125 Naples, Italy Univ Naples, I-80125 Naples, Italy Univ Naples Naples Italy I-80125Univ Naples, I-80125 Naples, Italy Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus Univ Cyprus Nicosia CyprusUniv Cyprus, Dept Nat Sci, Nicosia, Cyprus Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands Univ Nijmegen Nijmegen Netherlands NL-6525 ED 5 ED Nijmegen, Netherlands NIKHEF, NL-6525 ED Nijmegen, Netherlands NIKHEF Nijmegen Netherlands NL-6525 ED NL-6525 ED Nijmegen, Netherlands CALTECH, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125CALTECH, Pasadena, CA 91125 USA Univ Perugia, I-06100 Perugia, Italy Univ Perugia Perugia Italy I-06100Univ Perugia, I-06100 Perugia, Italy Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy Ist Nazl Fis Nucl Perugia Italy I-06100 Perugia, I-06100 Perugia, Italy Carnegie Mellon Univ, Pittsburgh, PA 15213 USA Carnegie Mellon Univ Pittsburgh PA USA 15213 iv, Pittsburgh, PA 15213 USA Princeton Univ, Princeton, NJ 08544 USA Princeton Univ Princeton NJ USA 08544 ceton Univ, Princeton, NJ 08544 USA Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy Ist Nazl Fis Nucl Rome Italy I-00185 Nucl, Sez Roma, I-00185 Rome, Italy Univ Rome La Sapienza, I-00185 Rome, Italy Univ Rome La Sapienza Rome Italy I-00185 a Sapienza, I-00185 Rome, Italy Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia Russian Acad Sci St Petersburg Russia Nucl Phys, St Petersburg, Russia Univ Salerno, I-84100 Salerno, Italy Univ Salerno Salerno Italy I-84100Univ Salerno, I-84100 Salerno, Italy Ist Nazl Fis Nucl, I-84100 Salerno, Italy Ist Nazl Fis Nucl Salerno Italy I-84100 Fis Nucl, I-84100 Salerno, Italy Univ Calif San Diego, La Jolla, CA 92093 USA Univ Calif San Diego La Jolla CA USA 92093 Diego, La Jolla, CA 92093 USA Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago, Spain Univ Santiago Santiago Spain E-15706 lementales, E-15706 Santiago, Spain Bulgarian Acad Sci, Cent Lab Mechatron & Instrumentat, BU-1113 Sofia, Bulgaria Bulgarian Acad Sci Sofia Bulgaria BU-1113 entat, BU-1113 Sofia, Bulgaria Korea Adv Inst Sci & Technol, Ctr High Energy Phys, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 5701, South Korea Univ Alabama, Tuscaloosa, AL 35486 USA Univ Alabama Tuscaloosa AL USA 35486 iv Alabama, Tuscaloosa, AL 35486 USA Univ Utrecht, NL-3584 CB Utrecht, Netherlands Univ Utrecht Utrecht Netherlands NL-3584 CB 3584 CB Utrecht, Netherlands NIKHEF, NL-3584 CB Utrecht, Netherlands NIKHEF Utrecht Netherlands NL-3584 CB F, NL-3584 CB Utrecht, Netherlands Purdue Univ, W Lafayette, IN 47907 USA Purdue Univ W Lafayette IN USA 47907 rdue Univ, W Lafayette, IN 47907 USA Paul Scherrer Inst, CH-5232 Villigen, Switzerland Paul Scherrer Inst Villigen Switzerland CH-5232 32 Villigen, Switzerland DESY, D-15738 Zeuthen, Germany DESY Zeuthen Germany D-15738DESY, D-15738 Zeuthen, Germany ETH Zurich, CH-8093 Zurich, Switzerland ETH Zurich Zurich Switzerland CH-8093 urich, CH-8093 Zurich, Switzerland Univ Hamburg, D-22761 Hamburg, Germany Univ Hamburg Hamburg Germany D-22761 v Hamburg, D-22761 Hamburg, Germany Natl Cent Univ, Chungli 32054, Taiwan Natl Cent Univ Chungli Taiwan 32054 atl Cent Univ, Chungli 32054, Taiwan Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan Hua Univ, Dept Phys, Hsinchu, Taiwan
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 1-4, volume: 470, anno: 1999,
pagine: 268 - 280
SICI:
0370-2693(199912)470:1-4<268:SAMEWM>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
DYNAMICAL SUPERSYMMETRY BREAKING; MONTE-CARLO PROGRAM; E+E ANNIHILATION; LIGHT GRAVITINO; E(+)E(-) COLLISIONS; L3 EXPERIMENT; BHABHA SCATTERING; STANDARD MODEL; SCALE; LEP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
67
Recensione:
Indirizzi per estratti:
Indirizzo: Acciarri, M Ist Nazl Fis Nucl, Sez Milan, Via Celoria 16, I-20133 Milan, Italy Ist Nazl Fis Nucl Via Celoria 16 Milan Italy I-20133 n, Italy
Citazione:
M. Acciarri et al., "Single and multi-photon events with missing energy e(+)e(-)collisions at root s=189 GeV", PHYS LETT B, 470(1-4), 1999, pp. 268-280

Abstract

Single and multi-photon events with missing energy are analysed using datacollected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb(-1) of integrated luminosity. The cross section ofthe process e(+)e(-) --> nu<(nu)over bar>gamma(gamma) is measured and the number of light neutrino flavours is determined to be N-nu= 3.011 +/- 0.077including lower energy data. Upper limits on cross sections of supersymmetric processes are set and interpretations in supersymmetric models provide improved limits on the masses of the lightest neutralino and the gravitino. Graviton-photon production in low scale gravity models with extra dimensions is searched for and limits on the energy scale of the model are set exceeding 1 TeV for two extra dimensions. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 26/01/21 alle ore 04:42:10