Search for doubly-charged Higgs bosons at LEP RID C-2983-2009 RID C-4549-2008 RID C-5719-2008 P Achard , O Adriani , M Aguilar Benitez , J Alcaraz , G Alemanni , J Allaby , A Aloisio , Mg Alviggi , H Anderhub , Vp Andreev , F Anselmo , A Arefiev , T Azemoon , T Aziz , P Bagnaia , A Bajo , G Baksay , L Baksay , Sv Baldew , S Banerjee , A Barczyk , R Barillere , P Bartalini , M Basile , N Batalova , R Battiston , A Bay , F Becattini , U Becker , F Behner , L Bellucci , R Berbeco , J Berdugo , P Berges , B Bertucci , Bl Betev , M Biasini , M Biglietti , A Biland , Jj Blaising , Sc Blyth , Gj Bobbink , A Bohm , L Boldizsar , B Borgia , S Bottai , D Bourilkov , M Bourquin , S Braccini , Jg Branson , F Brochu , Jd Burger , Wj Burger , Xd Cai , M Capell , Gc Romeo , G Carlino , A Cartacci , J Casaus , F Cavallari , N Cavallo , C Cecchi , M Cerrada , M Chamizo , Yh Chang , M Chemarin , A Chen , G Chen , Gm Chen , Hf Chen , Hs Chen , G Chiefari , L Cifarelli , F Cindolo , I Clare , R Clare , G Coignet , N Colino , S Costantini , B de la Cruz , S Cucciarelli , van Dalen Ja , R de Asmundis , P Deglon , J Debreczeni , A Degre , K Dehmelt , K Deiters , D della Volpe , E Delmeire , P Denes , Francesco De Notaristefani , A De Salvo , M Diemoz , M Dierckxsens , C Dionisi , M Dittmar , A Doria , Mt Dova , D Duchesneau , M Duda , B Echenard , A Eline , A El Hage , H El Mamouni , A Engler , Fj Eppling , P Extermann , Ma Falagan , S Falciano , A Favara , J Fay , O Fedin , M Felcini , T Ferguson , H Fesefeldt , E Fiandrini , Jh Field , F Filthaut , Ph Fisher , W Fisher , I Fisk , G Forconi , K Freudenreich , C Furetta , Y Galaktionov , Sn Ganguli , P Garcia Abia , M Gataullin , S Gentile , S Giagu , Zf Gong , F Greco , G Grenier , O Grimm , Mw Gruenewald , M Guida , R van Gulik , Vk Gupta , A Gurtu , Lj Gutay , D Haas , D Hatzifotiadou , T Hebbeker , A Herve , J Hirschfelder , H Hofer , M Hohlmann , G Holzner , Hou , Y Hu , Bn Jin , Lw Jones , P de Jong , I Josa Mutuberria , D Kafer , M Kaur , Kienzle Focacci Mn , Jk Kim , J Kirkby , W Kittel , A Klimentov , Ac Konig , M Kopal , Koutsenko , M Kraber , Rw Kraemer , A Kruger , A Kunin , de Guevara Pl , I Laktineh , G Landi , M Lebeau , A Lebedev , P Lebrun , P Lecomte , P Lecoq , P Le Coultre , Le Goff Jm , R Leiste , M Levtchenko , P Levtchenko , C Li , S Likhoded , Ch Lin , Wt Lin , Fl Linde , L Lista , Za Liu , W Lohmann , E Longo , Ys Lu , C Luci , L Luminari , W Lustermann , Wg Ma , L Malgeri , A Malinin , C Mana , J Mans , Jp Martin , F Marzano , K Mazumdar , Rr Mcneil , S Mele , L Merola , M Meschini , Wj Metzger , A Mihul , H Milcent , G Mirabelli , J Mnich , Gb Mohanty , Gs Muanza , Ajm Muijs , B Musicar , M Musy , S Nagy , S Natale , M Napolitano , F Nessi Tedaldi , H Newman , A Nisati , T Novak , H Nowak , R Ofierzynski , G Organtini , I Pal , C Palomares , P Paolucci , R Paramatti , G Passaleva , S Patricelli , T Paul , M Pauluzzi , C Paus , F Pauss , M Pedace , S Pensotti , D Perret Gallix , B Petersen , D Piccolo , F Pierella , M Pioppi , Pa Piroue , E Pistolesi , Plyaskin , M Pohl , Pojidaev , J Pothier , D Prokofiev , J Quartieri , G Rahal Callot , Ma Rahaman , P Raics , N Raja , R Ramelli , Pg Rancoita , R Ranieri , A Raspereza , P Razis , D Ren , M Rescigno , S Reucroft , S Riemann , K Riles , Bp Roe , L Romero , A Rosca , C Rosenbleck , S Rosier Lees , S Roth , Ja Rubio , G Ruggiero , H Rykaczewski , A Sakharov , S Saremi , S Sarkar , J Salicio , E Sanchez , C Schafer , Schegelsky , H Schopper , Dj Schotanus , C Sciacca , L Servoli , S Shevchenko , N Shivarov , Shoutko , E Shumilov , A Shvorob , D Son , C Souga , P Spillantini , M Steuer , Dp Stickland , B Stoyanov , A Straessner , K Sudhakar , G Sultanov , Lz Sun , S Sushkov , H Suter , Jd Swain , Z Szillasi , Xw Tang , P Tarjan , L Tauscher , L Taylor , B Tellili , D Teyssier , C Timmermans , Scc Ting , Sm Ting , Sc Tonwar , J Toth , C Tully , Kl Tung , J Ulbricht , E Valente , Van de Walle Rt , R Vasquez , Veszpremi , G Vesztergombi , I Vetlitsky , D Vicinanza , G Viertel , S Villa , M Vivargent , S Vlachos , I Vodopianov , H Vogel , H Vogt , I Vorobiev , Aa Vorobyov , M Wadhwa , Q Wang , Xl Wang , Zm Wang , M Weber , P Wienemann , H Wilkens , S Wynhoff , L Xia , Zz Xu , J Yamamoto , Bz Yang , Cg Yang , Hj Yang , M Yang , Sc Yeh , A Zalite , Y Zalite , Zp Zhang , J Zhao , Gy Zhu , Ry Zhu , Hl Zhuang , A Zichichi , B Zimmermann , M. Zoller Physics Letters B(2003)
摘要
Doubly-charged Higgs bosons are searched for in e+e− collision data collected with the L3 detector at LEP at centre-of-mass energies up to 209 GeV. Final states with four leptons are analysed to tag the pair-production of doubly-charged Higgs bosons. No significant excess is found and lower limits at 95% confidence level on the doubly-charged Higgs boson mass are derived. They vary from 95.5 to 100.2 GeV, depending on the decay mode. Doubly-charged Higgs bosons which couple to electrons would modify the cross section and forward–backward asymmetry of the e+e−→e+e− process. The measurements of these quantities do not deviate from the Standard Model expectations and doubly-charged Higgs bosons with masses up to the order of a TeV are excluded.
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