Search for Charged Lepton Flavor Violation in NarrowΥDecays

J P Lees,S Tosi,H Marsiske,J G Smith,M Pelliccioni,J Schwiening,R Gamet,U Mallik,G Marchiori,G Mancinelli,Y Y Gao,J Prendki,M Lo Vetere,M Morandin,A C Wren,P Taras,A J Edwards,L Vitale,C Bozzi,R M White,H W Wulsin,H R Band,E Fioravanti,R Sacco,D Bailey,W S Lockman,R Stroili,J Brau,G M Vitug,D P Stoker,J Strube,M Spitznagel,K Suzuki,R C Field,D J Asgeirsson,G Eigen,M Biasini,G Cavoto,D Su,A Stocchi,E Prencipe,A J Bevan,A K Yarritu,R F Schwitters,A Zallo,M Margoni,G Calderini,A Soffer,G Wormser,C Cartaro,J M Losecco,A Y Rakitin,M Piccolo,F Renga,N Soni,K Wacker,E C Martin,C Hearty,M Nagel,T J West,M Munerato,M Mandelkern,I Ofte,V Azzolini,E Salvati,A V Telnov,E Paoloni,J W Gary,M D Sokoloff,W Dunwoodie,A Seiden,S Nelson,J Garra Tico,C L Davis,M Weaver,C Sciacca,G Cowan,I M Nugent,E Luppi,R Rahmat,S Emery,H Jasper,C C Young,S R Wagner,A Lusiani,M R Monge,C Chen,L Wang,M Nicolaci,M Posocco,R De Sangro,E Ben-Haim,C A Chavez,A Adametz,P Sonnek,M H Kelsey,G D Lafferty,D Kovalskyi,M A Giorgi,A Roodman,N Guttman,C J Schilling,H Liu,B Franek,P Roudeau,L Sun,A T Watson,D Gamba,J P Burke,M Bellis,L Cremaldi,S Li,S Paramesvaran,D Kirkby,B Bhuyan,R Prepost,P Del Amo Sanchez,S Pacetti,T M Hong,J F Benitez,L Lanceri,M J Lewczuk,H Briand,D Lopes Pegna,G Finocchiaro,B J Wogsland,A Palano,R Eckmann,K R Schubert,W F Wang,H W Zhao,J Va’Vra,H L Lynch,P H Fisher,F Di Lodovico,K Honscheid,B Hooberman,A Gaz,W J Wisniewski,P F Harrison,F Forti,S I Serednyakov,D J Lange,R Cowan,S Sitt,F Simonetto,N L Blount,C Patrignani,D Bettoni,M Negrini,O Igonkina,A Oyanguren,M Carpinelli,C Angelini,S Passaggio,P C Bloom,F Ferrarotto,T Schalk,D J Bard,M S Alam,W R Innes,A A Salnikov,S Prell,D A Roberts,R Frey,N Arnaud,R Godang,M Bomben,P Kim,B Pan,G Grosdidier,F U Bernlochner,A Cervelli,M Barrett,V Poireau,M Simard,M H Schune,J Chauveau,R Bartoldus,M Ebert,G Vasseur,G Della Ricca,A M Gabareen,C Campagnari,S Curry,V Ziegler,J Anderson,R Ayad,K T Flood,E M T Puccio,S L Wu,H Atmacan,J R Wilson,H Kim,A Snyder,E I Rosenberg,M Fritsch,A Hafner,M Martinelli,X Chen,F C Porter,P Biassoni,K J Knoepfel,D R Muller,M Verderi,J M Tuggle,S H Robertson,P D Jackson,M Zito,P J Clark,P Ongmongkolkul,E Feltresi,L Li Gioi,M K Sullivan,L T Kerth,A M Ruland,G Batignani,S Luitz,A N Yushkov,F Ferroni,G Piredda,B Echenard,C P O’Grady,A Petrella,G B Mohanty,A J S Smith,B A Schumm,E P Solodov,D J Summers,T Hartmann,C M Hawkes,E Gabathuler,B N Ratcliff,J P Coleman,C Dallapiccola,S Playfer,H L Snoek,R Waldi,J Cochran,J Albert,M Lu,R Messner,D B Macfarlane,M T Allen,C Touramanis,L A Corwin,R Kass,G P Dubois-Felsmann,S Bettarini,S Ahmed,X Nguyen,H Schröder,J Kroseberg,T Adye,G R Bonneaud,B W Drummond,M Gaspero,M Sigamani,P Franchini,W T Ford,B C Wray,M Wittgen,E Baracchini,J L Ritchie,Z Yasin,J M Izen,A Lazzaro,Z J Guo,C Hast,M A Saeed,A Petzold,T Tanabe,J M Thompson,D G Hitlin,G Castelli,F Anulli,W T Meyer,R Cenci,R Kroeger,B Lindquist,D Bernard,J Dorfan,N B Sinev,M Davier,N Gagliardi,T M Karbach,Yu I Skovpen,V Lepeltier,Yu G Kolomensky,I Bingham,D N Brown,W H Toki,C H Cheng,R Contri,V Sharma,S Stracka,P Lund,V Lombardo,B G Fulsom,J A Mckenna,A P Onuchin,E Torrence,M T Graham,A Hauke,D Strom,I M Peruzzi,O Hamon,R Faccini,P M Patel,T S Miyashita,A J Lankford,G Cibinetto,R K Yamamoto,M Battaglia,A M Lutz,G Onorato,G Hamel De Monchenault,V Sordini,G Lynch,F Liu,A Volk,S J Sekula,D Monorchio,B Malaescu,T S Mattison,H B Crawley,M Bondioli,G J King,H H F Choi,S B Zain,T Lueck,R Baldini-Ferroli,M Franco Sevilla,F Bianchi,J Firmino Da Costa,A E Rubin,U Nauenberg,J E Watson,C A Heusch,J Olsen,A M Rahimi,U Uwer,G Raven,A Jawahery,R Andreassen,B Stugu,P Grenier,A Randle-Conde,M A Mazzoni,P R Burchat,S Dasu,G Sciolla,D A Doll,E Guido,F Le Diberder,K Hamano,B Spaan,J R Fry,R H Schindler,V Santoro,A P Wagner,P K Behera,J Ocariz,G Simi,R J Barlow,M Rama,J M Roney,W Park,M J Charles,J F Hirschauer,V Tisserand,A V Gritsan,M Rotondo,G Jackson,A Calcaterra,X R Chen,A M Eisner,E Robutti,S K Swain,K E Alwyn,O Long,M Morii,E Manoni,M Pappagallo,M R Convery,D Aston,D J Payne,M Andreotti,A Khan,R Schwierz,G De Nardo,J Marks,H Koch,W Gradl,F Palombo,J Merkel,R Kowalewski,N Neri,J Serrano,M Schram,L Piemontese,S Schenk,F F Wilson,A Cecchi,R Calabrese,G Rizzo,J P Morris,Ph Leruste ,V Blinov ,I Osipenkov ,D.w.g.s Leith ,T Vazquez Schroeder ,M Dubrovin ,B Meadows ,M Purohit ,D Hutchcroft ,C Jessop ,J Kamiński ,S Henderson ,C Lü ,T Latham ,T Gershon ,М Перл ,А Р Бузыкаев ,В Б Голубев ,K Yu Todyshev ,J Dingfelder ,S Banerjee ,P Dauncey ,Y B Pan ,M Kocian ,F Martínez-Vidal ,C Vuosalo ,D Dujmić ,M Kobel ,J Ilić ,J Kolb ,J Ernst ,Dong Liu ,C West ,V Lüth ,X Lou ,R Sobie ,H A Neal ,S Spanier ,M J Tibbetts ,D A Milanés ,Ch Yèche ,N López-March ,A Denig ,E Graugés ,A Pérez ,H Lacker ,M G Zhao ,A J Martínez ,J Walsh ,Д Деркач ,E Olaiya ,J Richman ,В П Дружинин ,P Patterí ,L Winstrom ,D Wright

doi:10.1103/physrevlett.104.151802

Abstract

Charged lepton flavor violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99M Y(2S) decays and 117M Y(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions BF(Y(nS) -> e tau) and BF(Y(nS) -> mu tau) (n = 2, 3) at the 10^(-6) level and use these results to place lower limits of order 1 TeV on the mass scale of charged lepton flavor violating effective operators.

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