G
G. Ambrosi
Researcher at University of Geneva
Publications - 108
Citations - 2749
G. Ambrosi is an academic researcher from University of Geneva. The author has contributed to research in topics: Electron–positron annihilation & Lepton. The author has an hindex of 26, co-authored 108 publications receiving 2662 citations. Previous affiliations of G. Ambrosi include University of Perugia.
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Journal ArticleDOI
The Alpha Magnetic Spectrometer (AMS)on the International Space Station : Part I - results from the test flight on the space shuttle
M. Aguilar,J. Alcaraz,Behcet Alpat,G. Ambrosi,G. Ambrosi,H. Anderhub,L. Ao,A. Arefiev,Philipp Azzarello,E. Babucci,L. Baldini,L. Baldini,M. Basile,D. Barancourt,F. Barao,G. Barbier,G.P. Barreira,Roberto Battiston,R. Becker,U. Becker,L. Bellagamba,P. Bene,J. Berdugo,P. Berges,B. Bertucci,Adrian Biland,S. Bizzaglia,S. Blasko,G. Boella,M. J. Boschini,M. Bourquin,L. Brocco,G. Bruni,M. Buenerd,J. D. Burger,W. J. Burger,X. D. Cai,C. Camps,P. Cannarsa,M. Capell,D. Casadei,J. Casaus,G. Castellini,Claudia Cecchi,Y. H. Chang,H.F. Chen,H. S. Chen,Z.G. Chen,N.A. Chernoplekov,Tzihong Chiueh,Kyung-Suk Cho,M.J. Choi,Y.Y. Choi,Y.L. Chuang,Federico Cindolo,V. Commichau,A. Contin,E. Cortina-Gil,Markus Cristinziani,J. P. Da Cunha,T. S. Dai,C. Delgado,J.D. Deus,N. Dinu,L. Djambazov,I. D'Antone,Z.R. Dong,P. Emonet,J. Engelberg,F. J. Eppling,T. Eronen,G. Esposito,P. Extermann,J. Favier,E. Fiandrini,Peter H. Fisher,G. Fluegge,N. Fouque,Yu. Galaktionov,Yu. Galaktionov,Massimo Gervasi,P. Giusti,D. Grandi,O. Grimm,W.Q. Gu,K. Hangarter,A. Hasan,V. Hermel,H. Hofer,M. A. Huang,W. Hungerford,Maria Ionica,R. Ionica,M. Jongmanns,K. Karlamaa,Waclaw Karpinski,G. Kenney,Jose Maria Kenny,D.H. Kim,Gui Nyun Kim,K.S. Kim,M.Y. Kim,A. Klimentov,A. Klimentov,R. Kossakowski,V. Koutsenko,V. Koutsenko,M. Kraber,G. Laborie,Timo Laitinen,G. Lamanna,E. Lanciotti,G. Laurenti,A. Lebedev,C. Lechanoine-Leluc,M.W. Lee,S.C. Lee,Giuseppe Levi,P. Levtchenko,C.L. Liu,Hengchang Liu,I. Lopes,G. Lu,Y.S. Lu,K. Luebelsmeyer,D. Luckey,Werner Lustermann,C. Maña,Anselmo Margotti,F. Mayet,R. R. McNeil,B. Meillon,Mauro Menichelli,A. Mihul,A. Mourao,Ari Mujunen,F. Palmonari,A. Papi,H.B. Park,W.H. Park,M. Pauluzzi,Felicitas Pauss,E. Perrin,A. Pesci,A. Pevsner,M. Pimenta,V. Plyaskin,V. Pojidaev,M. Pohl,V. Postolache,N. Produit,P. G. Rancoita,D. Rapin,Frank Raupach,D. Ren,Zhuoxiang Ren,M. Ribordy,J.P. Richeux,E. Riihonen,J. Ritakari,S. Ro,U. Roser,C. Rossin,Roald Z. Sagdeev,D. Santos,G. Sartorelli,C. Sbarra,Stefan Schael,A. Schultz von Dratzig,G. Schwering,G. Scolieri,Eun-Suk Seo,Jungwook Shin,V. Shoutko,E. Shoumilov,R. Siedling,Dong-Chul Son,Tao Song,M. Steuer,G.S. Sun,H. Suter,X.W. Tang,S.C.C. Ting,Samuel C.C. Ting,Merja Tornikoski,J. J. Torsti,J. Trümper,J. Ulbricht,S. Urpo,Eino Valtonen,J. Vandenhirtz,F. Velcea,E. P. Velikhov,B. Verlaat,I. Vetlitsky,F. Vezzu,J. P. Vialle,G. Viertel,D. Vité,H. von Gunten,S. Waldmeier Wicki,W. Wallraff,B.C. Wang,Jian Wang,Yun Wang,K. Wiik,Ciaran Williams,S. X. Wu,S. X. Wu,P.C. Xia,J.L. Yan,L.G. Yan,Changgen Yang,J. Yang,Mao-Zhi Yang,S.W. Ye,P. Yeh,Zhenghao Xu,Hao Zhang,Zhidong Zhang,Dawei Zhao,Guohuai Zhu,W.Z. Zhu,H. L. Zhuang,Antonino Zichichi,B. Zimmermann,Paolo Zuccon +226 more
TL;DR: The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 (June 1998) in a 51.7° orbit at altitudes between 320 and 390 km as discussed by the authors.
Journal ArticleDOI
Helium in near Earth orbit
J. Alcaraz,B. Alpat,G. Ambrosi,H. Anderhub,L. Ao,A. Arefiev,Philipp Azzarello,E. Babucci,L. Baldini,M. Basile,D. Barancourt,F. Barao,G. Barbier,G.P. Barreira,Roberto Battiston,R. Becker,U. Becker,L. Bellagamba,P. Bene,J. Berdugo,P. Berges,B. Bertucci,Adrian Biland,S. Bizzaglia,S. Blasko,G. Boella,M. J. Boschini,M. Bourquin,L. Brocco,G. Bruni,M. Buenerd,J. D. Burger,W. J. Burger,X. D. Cai,C. Camps,P. Cannarsa,M. Capell,D. Casadei,J. Casaus,G. Castellini,Claudia Cecchi,Y. H. Chang,H.F. Chen,H. S. Chen,Z.G. Chen,N.A. Chernoplekov,Tzihong Chiueh,Y.L. Chuang,Federico Cindolo,V. Commichau,A. Contin,Markus Cristinziani,J. P. Da Cunha,T. S. Dai,Jorge Dias de Deus,N. Dinu,L. Djambazov,I. D'Antone,Z.R. Dong,P. Emonet,J. Engelberg,F. J. Eppling,T. Eronen,G. Esposito,P. Extermann,J. Favier,E. Fiandrini,Peter H. Fisher,G. Fluegge,N. Fouque,Yu. Galaktionov,Massimo Gervasi,P. Giusti,D. Grandi,O. Grimm,W.Q. Gu,K. Hangarter,A. Hasan,V. Hermel,H. Hofer,M. A. Huang,W. Hungerford,Maria Ionica,R. Ionica,M. Jongmanns,K. Karlamaa,Waclaw Karpinski,G. Kenney,Jose Maria Kenny,W. Kim,A. Klimentov,R. Kossakowski,V. Koutsenko,M. Kraeber,G. Laborie,Timo Laitinen,G. Lamanna,G. Laurenti,A. Lebedev,S.C. Lee,Giuseppe Levi,P. Levtchenko,C.L. Liu,Hengchang Liu,I. Lopes,G. Lu,Y.S. Lu,K. Lübelsmeyer,D. Luckey,Werner Lustermann,C. Maña,Anselmo Margotti,F. Mayet,R. R. McNeil,B. Meillon,Mauro Menichelli,A. Mihul,A. Mourao,Ari Mujunen,F. Palmonari,A. Papi,Inkyu Park,M. Pauluzzi,Felicitas Pauss,E. Perrin,A. Pesci,A. Pevsner,M. Pimenta,V. Plyaskin,V. Pojidaev,M. Pohl,V. Postolache,Nicolas Produit,P. G. Rancoita,D. Rapin,Frank Raupach,D. Ren,Z. L. Ren,M. Ribordy,J.P. Richeux,E. Riihonen,J. Ritakari,U. Roeser,C. Roissin,Roald Z. Sagdeev,G. Sartorelli,A. Schultz von Dratzig,G. Schwering,G. Scolieri,Eun-Suk Seo,V. Shoutko,E. Shoumilov,R. Siedling,Dong-Chul Son,Tao Song,M. Steuer,G.S. Sun,H. Suter,X.W. Tang,Samuel C.C. Ting,S. M. Ting,Merja Tornikoski,J. J. Torsti,J. Trümper,J. Ulbricht,S. Urpo,Ilya Usoskin,Eino Valtonen,J. Vandenhirtz,F. Velcea,E. P. Velikhov,B. Verlaat,I. Vetlitsky,F. Vezzu,J.P. Vialle,G. Viertel,D. Vité,H. von Gunten,S. Waldmeier Wicki,W. Wallraff,B.C. Wang,Jing Wang,Yun Wang,K. Wiik,Ciaran Williams,S. X. Wu,P.C. Xia,J.L. Yan,L.G. Yan,Changgen Yang,Mao-Zhi Yang,S.W. Ye,P. Yeh,Zhenghao Xu,Hao Zhang,Zhidong Zhang,D.X. Zhao,Guohuai Zhu,W.Z. Zhu,H. L. Zhuang,Antonino Zichichi,B. Zimmermann,Paolo Zuccon +202 more
TL;DR: The helium spectrum from 0.1 to 1.2 was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380 km as discussed by the authors.
Journal ArticleDOI
Search for antihelium in cosmic rays
J. Alcaraz,D. Alvisi,B. Alpat,G. Ambrosi,H. Anderhub,L. Ao,A. Arefiev,Philipp Azzarello,E. Babucci,L. Baldini,L. Baldini,M. Basile,D. Barancourt,F. Barao,G. Barbier,G.P. Barreira,Roberto Battiston,R. Becker,U. Becker,L. Bellagamba,P. Bene,J. Berdugo,P. Berges,B. Bertucci,Adrian Biland,S. Bizzaglia,S. Blasko,G. Boella,M. Bourquin,G. Bruni,M. Buenerd,J. D. Burger,W. J. Burger,X. D. Cai,R. Cavalletti,C. Camps,P. Cannarsa,M. Capell,D. Casadei,J. Casaus,G. Castellini,Y. H. Chang,H. S. Chen,Z.G. Chen,N.A. Chernoplekov,A. Chiarini,Tzihong Chiueh,Y.L. Chuang,Federico Cindolo,V. Commichau,A. Contin,A. Cotta-Ramusino,P. Crespo,Markus Cristinziani,J. P. Da Cunha,T. S. Dai,Jorge Dias de Deus,L.K. Ding,N. Dinu,L. Djambazov,I. D'Antone,Z.R. Dong,E. Emonet,F. J. Eppling,T. Eronen,G. Esposito,P. Extermann,J. Favier,C.C. Feng,E. Fiandrini,Fabio Finelli,Peter H. Fisher,R. Flaminio,G. Fluegge,N. Fouque,Yu. Galaktionov,Yu. Galaktionov,Massimo Gervasi,P. Giusti,W.K. Gu,T.G. Guzik,K. Hangarter,A. Hasan,V. Hermel,H. Hofer,M. A. Huang,W. Hungerford,M. Ionica,R. Ionica,J. Isbert,M. Jongmanns,W. Karpinski,G. Kenney,Jose Maria Kenny,W. Kim,A. Klimentov,A. Klimentov,J. Krieger,R. Kossakowski,V. Koutsenko,V. Koutsenko,G. Laborie,Timo Laitinen,G. Lamanna,G. Laurenti,A. Lebedev,S.C. Lee,Giuseppe Levi,P. Levtchenko,T.P. Li,C.L. Liu,H.T. Liu,M. Lolli,I. Lopes,G. Lu,Y. S. Lu,K. Luebelsmeyer,D. Luckey,Werner Lustermann,G. Maehlum,C. Maña,Anselmo Margotti,F. Massera,F. Mayet,R. R. McNeil,B. Meillon,Mauro Menichelli,F. Mezzanotte,Raffaele Mezzenga,A. Mihul,G. Molinari,A. Mourao,Ari Mujunen,F. Palmonari,G. Pancaldi,A. Papi,Inkyu Park,M. Pauluzzi,Felicitas Pauss,E. Perrin,A. Pesci,A. Pevsner,R. Pilastrini,M. Pimenta,V. Plyaskin,V. Pojidaev,H. Postema,E. Prati,Nicolas Produit,P. G. Rancoita,D. Rapin,F. Raupach,S. Recupero,D. Ren,Zhuoxiang Ren,M. Ribordy,J.P. Richeux,E. Riihonen,J. Ritakari,U. Roeser,C. Rossin,Roald Z. Sagdeev,D. Santos,G. Sartorelli,A. Schultz von Dratzig,G. Schwering,V. Shoutko,E. Shoumilov,R. Siedling,Dong-Chul Son,Tao Song,M. Steuer,G.S. Sun,H. Suter,X. W. Tang,Samuel C.C. Ting,S. M. Ting,F. Tenbusch,G. Torromeo,J. J. Torsti,J. Truemper,J. Ulbricht,S. Urpo,Ilya Usoskin,Eino Valtonen,J. Vandenhirtz,E. P. Velikhov,B. Verlaat,I. Vetlitsky,F. Vezzu,J.P. Vialle,G. Viertel,D. Vité,H. von Gunten,S. Waldmeier Wicki,W. Wallraff,B.C. Wang,Jing Wang,Yun Wang,J.P. Wefel,E.A. Werner,Ciaran Williams,S. X. Wu,S. X. Wu,P.C. Xia,J.L. Yan,L.G. Yan,C. G. Yang,M. Yang,P. Yeh,Hao Zhang,D.X. Zhao,G.Y. Zhu,W.Z. Zhu,H.L. Zhuang,Antonino Zichichi +215 more
TL;DR: The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 in a 51.7 degree orbit at altitudes between 320 and 390 km as mentioned in this paper.
Journal ArticleDOI
Higgs Candidates in e+e- Interactions at √ s= 206.6 GeV
M. Acciarri,P. Achard,O. Adriani,M. Aguilar-Benitez,J. Alcaraz,G. Alemanni,J. Allaby,Alberto Aloisio,Mariagrazia Alviggi,G. Ambrosi,H. Anderhub,Vladimir Andreev,Vladimir Andreev,T. Angelescu,F. Anselmo,A. Arefiev,T. Azemoon,Tariq Aziz,Paolo Bagnaia,A. Bajo,L. Baksay,A. Balandras,S. V. Baldew,S. Banerjee,S. W. Banerjee,A. Barczyk,A. Barczyk,R. Barillère,P. Bartalini,M. Basile,N. Batalova,Roberto Battiston,A. Bay,Francesco Becattini,U. Becker,F. Behner,L. Bellucci,R. Berbeco,J. Berdugo,P. Berges,B. Bertucci,B. L. Betev,S. Bhattacharya,Maurizio Biasini,Adrian Biland,J. J. Blaising,S. C. Blyth,Gerjan Bobbink,A. Böhm,Laszlo Boldizsar,B. Borgia,Dimitri Bourilkov,M. Bourquin,S. Braccini,J. G. Branson,F. Brochu,A. Buffini,A. Buijs,J. D. Burger,W. J. Burger,X. D. Cai,M. Capell,G. Cara Romeo,G. Carlino,A. M. Cartacci,J. Casaus,G. Castellini,Francesca Cavallari,Nicola Cavallo,Claudia Cecchi,Marcos Cerrada,F. Cesaroni,M. Chamizo,Y. H. Chang,U. K. Chaturvedi,M. Chemarin,A. Chen,G. M. Chen,Guo-Ming Chen,H. F. Chen,H. S. Chen,G. Chiefari,L. Cifarelli,F. Cindolo,Carlo Civinini,I. Clare,Robert Clare,G. Coignet,Nicanor Colino,S. Costantini,F. Cotorobai,B. De La Cruz,A. Csilling,S. Cucciarelli,T. S. Dai,J. A. van Dalen,Raffaello D'Alessandro,R. de Asmundis,P. Déglon,A. Degré,Konrad Deiters,D. della Volpe,E. Delmeire,Peter Denes,F. DeNotaristefani,A. De Salvo,Marcella Diemoz,M. Dierckxsens,D. van Dierendonck,C. Dionisi,Michael Dittmar,Aaron Dominguez,Alessandra Doria,M. T. Dova,D. Duchesneau,D. Dufournaud,P. Duinker,I. Duran,H. El Mamouni,A. Engler,F. J. Eppling,F. C. Erné,A. Ewers,P. Extermann,M. Fabre,M. A. Falagan,Speranza Falciano,A. Favara,Jean Fay,Oleg Fedin,Marta Felcini,Thomas Ferguson,H. S. Fesefeldt,E. Fiandrini,J. H. Field,Frank Filthaut,Peter H. Fisher,I. Fisk,G. Forconi,K. Freudenreich,C. Furetta,Yu. Galaktionov,S. N. Ganguli,Pablo Garcia-Abia,M. Gataullin,S. S. Gau,Simonetta Gentile,N. Gheordanescu,Stefano Giagu,Z. F. Gong,G. Grenier,O. Grimm,M. W. Gruenewald,Michele Guida,R. van Gulik,V. K. Gupta,A. Gurtu,L. J. Gutay,D. Haas,A. Hasan,Despina Hatzifotiadou,Thomas Hebbeker,Alain Hervé,Pàl Hidas,J. Hirschfelder,H. Hofer,G. Holzner,Hafeez R Hoorani,S. R. Hou,Ya Han Hu,Ia Iashvili,B. N. Jin,L. W. Jones,P. de Jong,I. Josa-Mutuberria,R. A. Khan,D. Käfer,Manjit Kaur,M. N. Kienzle-Focacci,Dong-Hyun Kim,J. K. Kim,Jasper Kirkby,D. Kiss,W. Kittel,A. Klimentov,A. C. König,M. Kopal,Anna Katharina Kopp,V. Koutsenko,M. Kräber,R. W. Kraemer,W. Krenz,A. Krüger,A. Kunin,P. Ladron de Guevara,Imad Baptiste Laktineh,G. Landi,M. Lebeau,A. Lebedev,P. Lebrun,P. Lecomte,Paul Lecoq,P. Le Coultre,H. J. Lee,J.M. LeGoff,R. Leiste,P. Levtchenko,C-Q. Li,S. Likhoded,C. H. Lin,Willis Lin,F. L. Linde,Luca Lista,Z. A. Liu,Wolfgang Lohmann,Egidio Longo,Y. S. Lu,K. Lübelsmeyer,Claudio Luci,D. Luckey,L. Lugnier,Lamberto Luminari,Werner Lustermann,W. G. Ma,Manas Maity,Luca Malgeri,A. Malinin,C. Maña,D. Mangeol,Jeremy Mans,G. Marian,J. P. Martin,F. Marzano,Kajari Mazumdar,R. R. McNeil,Salvatore Mele,Leonardo Merola,Marco Meschini,W. J. Metzger,M. von der Mey,A. Mihul,H. Milcent,G. Mirabelli,J. Mnich,G. B. Mohanty,T. Moulik,G.S. Muanza,A. J.M. Muijs,B. Musicar,M. Musy,M. Napolitano,Francesca Nessi-Tedaldi,Harvey B Newman,T. Niessen,Aleandro Nisati,H. Nowak,R. Ofierzynski,Giovanni Organtini,A. Oulianov,C. Palomares,D. Pandoulas,Simone Paoletti,Pierluigi Paolucci,Riccardo Paramatti,H. K. Park,Inkyu Park,G. Passaleva,S. Patricelli,T. Paul,M. Pauluzzi,Christoph Paus,Felicitas Pauss,M. Pedace,S. Pensotti,D. Perret-Gallix,B. Petersen,D. Piccolo,F. Pierella,Marco Pieri,P. A. Piroué,E. Pistolesi,V. Plyaskin,M. Pohl,V. Pojidaev,H. Postema,J. Pothier,D. O. Prokofiev,D. Prokofiev,Joseph Quartieri,G. Rahal-Callot,G. Rahal-Callot,M. A. Rahaman,Peter Raics,N. Raja,R. Ramelli,P. G. Rancoita,R. Ranieri,Alexei Raspereza,G. Raven,Panos A Razis,D. Ren,M. Rescigno,S. Reucroft,Sabine Riemann,K. Riles,J. Rodin,B. P. Roe,L. Romero,A. Rosca,S. Rosier-Lees,Stefan Roth,C. Rosenbleck,J. A. Rubio,G. Ruggiero,H. Rykaczewski,S. Saremi,S. Sarkar,J. Salicio,E. J. Sanchez,M. P. Sanders,Christoph Schäfer,Valery Schegelsky,S. Schmidt-Kaerst,D.W. Schmitz,Herwig Schopper,D. J. Schotanus,G. Schwering,Crisostomo Sciacca,A. Seganti,L. Servoli,S. Shevchenko,N. Shivarov,V. Shoutko,E. Shumilov,A. Shvorob,T. Siedenburg,Dong-Chul Son,B. Smith,P. Spillantini,M. Steuer,D. P. Stickland,A. Stone,B. Stoyanov,A. Straessner,K. Sudhakar,Georgi Sultanov,L. Z. Sun,S. Sushkov,H. Suter,J. D. Swain,Z. Szillasi,T. Sztaricskai,X. W. Tang,L. Tauscher,Lucas Taylor,B. Tellili,Charles Timmermans,Samuel C.C. Ting,S. M. Ting,S. C. Tonwar,J. Tóth,Christopher George Tully,K. L. Tung,Y. Uchida,J. Ulbricht,E. Valente,Gyorgy Vesztergombi,I. Vetlitsky,D. Vicinanza,G. Viertel,S. Villa,M. Vivargent,S. Vlachos,I. Vodopianov,Hans J. Vogel,H. Vogt,Igor Vorobiev,An.A. Vorobyov,A. Vorvolakos,M. Wadhwa,W. Wallraff,Minhong Wang,X. L. Wang,Zheng Wang,A. C. Weber,Max Weber,P. Wienemann,H. Wilkens,S. X. Wu,S. Wynhoff,L. Xia,Z. Z. Xu,J. Yamamoto,B. Z. Yang,C. G. Yang,H. J. Yang,Mingming Yang,J. B. Ye,S. C. Yeh,An. Zalite,Yu. Zalite,Zhenyu Zhang,G. Y. Zhu,Ren-Yuan Zhu,A. Zichichi,G. Zilizi,B. Zimmermann,M. Zöller +407 more
TL;DR: In a search for the Standard Model Higgs boson, carried out on 212.5~$\mathrm{pb^{-1}}$ above $\sqrt{s} = 206$~GeV, an excess of candidates for the process was found for Higgs masses near 114.5 ~GeV as mentioned in this paper.
Journal ArticleDOI
Measurement of η′(958) formation in two-photon collisions at LEP1
M. Acciarri,O. Adriani,M. Aguilar-Benitez,S. P. Ahlen,J. Alcaraz,G. Alemanni,J.V. Allaby,Alberto Aloisio,George Alverson,M. G. Alviggi,G. Ambrosi,H. Anderhub,V. P. Andreev,T. Angelescu,F. Anselmo,A. Arefiev,T. Azemoon,Tariq Aziz,Paolo Bagnaia,L. Baksay,R. C. Ball,S. Banerjee,K. Banicz,A. Barczyk,R. Barillère,Luciano Barone,P. Bartalini,Andrea Baschirotto,M. Basile,Roberto Battiston,A. Bay,Francesco Becattini,U. Becker,F. Behner,J. Berdugo,P. Berges,B. Bertucci,B. L. Betev,S. Bhattacharya,Maurizio Biasini,Adrian Biland,G. M. Bilei,J. J. Blaising,S. C. Blyth,Gerjan Bobbink,R. Bock,A. Böhm,Laszlo Boldizsar,B. Borgia,Dimitri Bourilkov,M. Bourquin,D. Boutigny,S. Braccini,J. G. Branson,V. Brigljevic,I. C. Brock,A. Buffini,A. Buijs,J. D. Burger,W. J. Burger,J. Busenitz,X. D. Cai,M. Campanelli,M. Capell,G. Cara Romeo,G. Carlino,A. M. Cartacci,J. Casaus,G. Castellini,Francesca Cavallari,Nicola Cavallo,C. Cecchi,Marcos Cerrada,F. Cesaroni,M. Chamizo,Y. H. Chang,U. K. Chaturvedi,S. V. Chekanov,M. Chemarin,A. Chen,G. M. Chen,Guo-Ming Chen,H. F. Chen,H. S. Chen,Mingshui Chen,G. Chiefari,C. Y. Chien,Luisa Cifarelli,Federico Cindolo,Carlo Civinini,I. Clare,Robert Clare,H. O. Cohn,G. Coignet,A. P. Colijn,Nicanor Colino,V. Commichau,S. Costantini,F. Cotorobai,B. De La Cruz,A. Csilling,T. S. Dai,Raffaello D'Alessandro,R. de Asmundis,A. Degré,Konrad Deiters,Peter Denes,F. DeNotaristefani,D. DiBitonto,Marcella Diemoz,D. van Dierendonck,F. Di Lodovico,C. Dionisi,Michael Dittmar,Aaron Dominguez,Alessandra Doria,M. T. Dova,E. Drago,D. Duchesneau,P. Duinker,I. Duran,Suchandra Dutta,S. Easo,Yu. Efremenko,H. El Mamouni,A. Engler,F. J. Eppling,F. C. Erné,J. P. Ernenwein,P. Extermann,M. Fabre,R. Faccini,Speranza Falciano,A. Favara,Jean Fay,Oleg Fedin,Marta Felcini,B. Fenyi,Thomas Ferguson,F. Ferroni,H. S. Fesefeldt,E. Fiandrini,J. H. Field,Frank Filthaut,Peter H. Fisher,I. Fisk,G. Forconi,L. Fredj,K. Freudenreich,C. Furetta,Yu. Galaktionov,S. N. Ganguli,Pablo Garcia-Abia,S.S. 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TL;DR: In this article, the formation of the η′ in the reaction e+e−→e+e −η−η′→e−π+π−γ has been measured by the L3 detector at a centre-of-mass energy of 91 GeV.