Study of radiative bottomonium transitions using converted photons

J P Lees,V Poireau,E Prencipe,V Tisserand,J Garra Tico,E Grauges,M Martinelli,D A Milanes,A Palano,M Pappagallo,G Eigen, B Stugu,Lin Sun, D J A Brown,L T Kerth,Yu G Kolomensky,G Lynch, H Koch,T Schroeder,D J Asgeirsson, C Hearty,T S Mattison, J A Mckenna,A Khan,V E Blinov,A R Buzykaev, V P Druzhinin,V B Golubev,E A Kravchenko,A P Onuchin,S I Serednyakov,Yu I Skovpen,E P Solodov,K Todyshev,A N Yushkov,M Bondioli,S Curry,D Kirkby, A J Lankford,M Mandelkern,D P Stoker,H Atmacan,J W Gary,F Liu,O Long, G M Vitug,C Campagnari,Tzungpei Hong, D Kovalskyi, J D Richman,C A West,A M Eisner,J Kroseberg, W S Lockman,Alfonso Tarazona Martinez,T Schalk, B A Schumm,A Seiden, Cheng Cheng,D A Doll, B Echenard,K T Flood,D G Hitlin,P Ongmongkolkul, F C Porter,A Y Rakitin,R Andreassen, M S Dubrovin,B T Meadows, M D Sokoloff,P C Bloom,W T Ford, A Gaz, M Nagel, U Nauenberg,J G Smith, S R Wagner,R Ayad,W H Toki,B Spaan,M Kobel,K R Schubert, R Schwierz, D Bernard,M Verderi, P J Clark,S Playfer,J Watson,D Bettoni, C Bozzi,R Calabrese,G Cibinetto,E Fioravanti, I Garzia,E Luppi,M Munerato, M Negrini,L Piemontese,R Baldiniferroli,A Calcaterra,R De Sangro, G Finocchiaro,M Nicolaci,S Pacetti,P Patteri,I M Peruzzi,M Piccolo, M Rama,A Zallo,R Contri,E Guido,M Lo Vetere,M R Monge, S Passaggio, C Patrignani,E Robutti,B Bhuyan,V Prasad,C Lee,M Morii,Andrew J Edwards,A Adametz,J Marks,U Uwer,F U Bernlochner,M Ebert, H M Lacker,T Lueck, P D Dauncey,M Tibbetts, P K Behera,U Mallik,C Chen,J Cochran,H B Crawley, W T Meyer,S Prell,E I Rosenberg,A E Rubin, A V Gritsan, Zhanjun Guo,N Arnaud, M Davier,D Derkach,G Grosdidier,F Le Diberder,A M Lutz, B Malaescu,P Roudeau,M H Schune, A Stocchi,G Wormser,David Lange,D H Wright,I Bingham,C A Chavez,J P Coleman,J R Fry, E Gabathuler,D E Hutchcroft,D G Payne,C Touramanis,A J Bevan,F Di Lodovico,R Sacco, M Sigamani,G Cowan, S Paramesvaran,C L Davis, A G Denig,M Fritsch,W Gradl,A Hafner, K E Alwyn,D Bailey, R J Barlow,George W Jackson,G D Lafferty,R Cenci,B Hamilton, A Jawahery,D A Roberts,G Simi, C Dallapiccola, E Salvati,R Cowan,D Dujmic, G Sciolla,D Lindemann,P M Patel,S H Robertson, M Schram,P Biassoni,A Lazzaro,V Lombardo,F Palombo,S Stracka, L Cremaldi,R Godang, R Kroeger,P Sonnek, D J Summers,X Nguyen,P Taras,G De Nardo,D Monorchio,G Onorato,C Sciacca,G Raven, H Snoek, C P Jessop,K J Knoepfel,J M Losecco, Wenping Wang,K Honscheid, R Kass,J Brau,R Frey, N B Sinev,D Strom,E Torrence,E Feltresi,N Gagliardi, M Margoni,M Morandin,M Posocco,Michael F Rotondo, F Simonetto,R Stroili,E Benhaim, M Bomben,G R Bonneaud,H Briand, G Calderini,J Chauveau,O Hamon,Ph Leruste, G Marchiori, J Ocariz,S Sitt, M Biasini,E Manoni, A M Rossi,C Angelini,G Batignani,S Bettarini,M Carpinelli,G Casarosa,A Cervelli, F Forti,M A Giorgi,A Lusiani, N Neri, B Oberhof,E Paoloni,A Perez,G Rizzo, J Walsh,D Lopes Pegna,C Lu, J Olsen,A J S Smith,A V Telnov, F Anulli,G Cavoto,R Faccini,F Ferrarotto,F Ferroni,M Gaspero,L Li Gioi,M A Mazzoni,G Piredda, C Bunger,T Hartmann,T Leddig,Heinz C Schroder,R Waldi,T Adye, E O Olaiya, F F Wilson,S Emery,G Hamel De Monchenault, G Vasseur,Ch Yeche,D Aston,D J Bard, R Bartoldus,J F Benitez,C Cartaro,M R Convery, J Dorfan,G P Duboisfelsmann,W Dunwoodie, R D Field,M Franco Sevilla,B G Fulsom,A M Gabareen,M T Graham,P Grenier,C Hast,W R Innes,M H Kelsey,H Kim,Philip Kim,M L Kocian, D W G S Leith,P Lewis,Sheng Li,B Lindquist,S Luitz, V Luth,H L Lynch,D B Macfarlane,D R Muller, H A Neal,S Nelson,I Ofte,M Perl,T Pulliam,B N Ratcliff,A Roodman, A A Salnikov,V Santoro, R H Schindler,A Snyder, D Su, M K Sullivan,J Va Vra, A Wagner,M Weaver,W J Wisniewski,M Wittgen,H W Wulsin, A K Yarritu,Charles Young,V Ziegler, W Park, M V Purohit,R M White, J R Wilson, A Randleconde, S J Sekula,M Bellis,P R Burchat,T S Miyashita,M A Alam,J Ernst, R Gorodeisky, N Guttman, D R Peimer, A Soffer,P Lund, S M Spanier,R Eckmann,J L Ritchie,A M Ruland,C J Schilling,R F Schwitters, B C Wray, J M Izen,X Lou,F Bianchi, D Gamba,L Lanceri,L Vitale,N Lopezmarch,F Martinezvidal,A Oyanguren,H Ahmed, J Albert,Sw Banerjee,H Choi,G King, R Kowalewski,M J Lewczuk,C Lindsay, I M Nugent, J M Roney, R Sobie, T Gershon, P F Harrison, T E Latham,E M T Puccio, H R Band, S Dasu, Y Pan,R Prepost, C Vuosalo, S Wu

PHYSICAL REVIEW D（2011）

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摘要

We use (111 +/- 1) million Gamma(3S) and (89 +/- 1) million Gamma(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e(+)e(-) pairs by the detector material. We observe Gamma(3S) -> gamma chi b(0,2)(1P) decay, make precise measurements of the branching fractions for chi b(1,2)(1P, 2P) -> gamma Gamma(1S) and chi b(1,2)(2P) -> gamma Gamma(2S) decays, and search for radiative decay to the eta(b)(1S) and eta(b)(2S) states.

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