Observation Of A Charmed Baryon Decaying To D(0)P At A Mass Near 2.94 Gev/C(2)
B. Aubert,R. Barate,M. Bona, D. Boutigny, F. Couderc,Y. Karyotakis,J. P. Lees,V. Poireau,V. Tisserand,A. Zghiche,E. Grauges,A. Palano,M. Pappagallo,J. C. Chen,N. D. Qi,G. Rong, P. Wang,Y. S. Zhu,G. Eigen,I. Ofte,B. Stugu,G. S. Abrams,M. Battaglia, D. N. Brown, J. Button-Schafer,R. N. Cahn, E. Charles,C. Day,M. Gill,Y. Groysman, R. Jacobsen,J. Kadyk,L. Kerth,Yu. Kolomensky, G. Kukartsev,G. Lynch,L. Mir,P. Oddone,T. Orimoto,M. Pripstein,N. Roe,M. Ronan,W. Wenzel,M. Barrett, K. Ford,T. Harrison,A. Hart,C. Hawkes,S. Morgan,A. Watson,K. Goetzen,T. Held,H. Koch,B. Lewandowski,M. Pelizaeus,K. Peters,T. Schroeder, M. Steinke,J. Boyd,J. Burke,W. Cottingham, D. Walker,T. Cuhadar-Donszelmann,B. Fulsom,C. Hearty,N. Knecht,T. Mattison, J. McKenna, A. Khan,P. Kyberd,M. Saleem,L. Teodorescu,V. Blinov,A. Bukin, V. Druzhinin,V. Golubev,A. Onuchin,S. Serednyakov,Yu. Skovpen,E. Solodov,K. Yu Todyshev,D. Best,M. Bondioli,M. Bruinsma,M. Chao,S. Curry, I. Eschrich,D. Kirkby,A. Lankford,P. Lund,M. Mandelkern, R. Mommsen,W. Roethel,D. Stoker,S. Abachi,C. Buchanan,S. Foulkes,J. Gary,O. Long,B. Shen,K. Wang, L. Zhang,H. Hadavand,E. Hill, H. Paar,S. Rahatlou, V. Sharma, J. Berryhill, C. Campagnari,A. Cunha, B. Dahmes, T. Hong, D. Kovalskyi,J. Richman,T. Beck,A. Eisner,C. Flacco, C. Heusch,J. Kroseberg, W. Lockman,G. Nesom,T. Schalk,B. Schumm, A. Seiden,P. Spradlin,D. Williams, M. Wilson,J. Albert,E. Chen,A. Dvoretskii,D. Hitlin,I. Narsky,T. Piatenko, F. Porter, A. Ryd,A. Samuel,R. Andreassen, G. Mancinelli,B. Meadows,M. Sokoloff,F. Blanc,P. Bloom,S. Chen,W. Ford, J. Hirschauer,A. Kreisel, U. Nauenberg,A. Olivas,W. Ruddick,J. Smith,K. Ulmer,S. Wagner,J. Zhang, A. Chen,E. Eckhart, A. Soffer,W. Toki,R. Wilson,F. Winklmeier,Q. Zeng,D. Altenburg,E. Feltresi,A. Hauke,H. Jasper, B. Spaan,T. Brandt,V. Klose,H. Lacker,W. Mader,R. Nogowski, A. Petzold,J. Schubert,K. Schubert, R. Schwierz,J. Sundermann,A. Volk, D. Bernard, G. Bonneaud, P. Grenier,E. Latour,Ch. Thiebaux,M. Verderi, D. Bard,P. 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Majewski,B. Petersen,C. Roat,L. Wilden,S. Ahmed,M. Alam,R. Bula,J. Ernst,V. Jain,B. Pan,M. Saeed,F. Wappler,S. Zain,W. Bugg,M. Krishnamurthy, S. Spanier,R. Eckmann,J. Ritchie,A. Satpathy,C. Schilling, R. Schwitters,J. Izen,I. Kitayama,X. Lou, S. Ye,F. Bianchi,F. Gallo,D. Gamba, M. Bomben,L. Bosisio,C. Cartaro, F. Cossutti,G. Della Ricca,S. Dittongo,S. Grancagnolo,L. Lanceri,L. Vitale, V. Azzolini,F. Martinez-Vidal,Sw. Banerjee,B. Bhuyan,C. Brown,D. Fortin,K. Hamano,R. Kowalewski,I. Nugent,J. Roney, R. Sobie,J. Back,P. Harrison,T. Latham,G. Mohanty,H. Band,X. Chen,B. Cheng, S. Dasu,M. Datta, A. Eichenbaum,K. Flood, J. Hollar, J. Johnson,P. Kutter,H. Li,R. Liu,B. Mellado,A. Mihalyi, A. Mohapatra, Y. Pan,M. Pierini,R. Prepost,P. Tan, S. Wu,Z. Yu,H. Neal
PHYSICAL REVIEW LETTERS（2007）
引用 187|浏览347
摘要
A search for charmed baryons decaying to D(0)p reveals two states: the Lambda(c)(2880)(+) baryon and a previously unobserved state at a mass of [2939.8 +/- 1.3(stat)+/- 1.0(syst)] MeV/c(2) and with an intrinsic width of [17.5 +/- 5.2(stat)+/- 5.9(syst)] MeV. Consistent and significant signals are observed for the K-pi(+) and K-pi(+)pi(-)pi(+) decay modes of the D-0 in 287 fb(-1) annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D(+)p spectrum of doubly charged partners. The mass and intrinsic width of the Lambda(c)(2880)(+) baryon and relative yield of the two baryons are also measured.
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