We report on the study of charm baryons decaying to Lambda(c)+: Lambda(c)★+(2625) → Lambda(c)+pi+pi−, Lambda(c)★+(2593) → Lambda(c)+pi+pi−, Sigma(c)0 → Lambda(c)+pi− and Sigma(c)++ → Lambda(c)+pi+. We present a confirmation of the state Lambda(c)*+ (2593) and determine its mass difference to be M(Lambda(c)★+(2593)) − M(Lambda(c)+) = 309.2 ± 0.7 ± 0.3 MeV/c2. We determine the lower limit on the resonant branching ratio to be BR(Lambda(c)*+(2593) -> Sigma(c) pi(+-)/ Lambda(c)*+(2593)-> Lambda(c)+ pi+ pi-) > 0.51 (90% c.l.). We also measure the mass differences M(Sigma(c)0) − M(Lambda(c)+) = 166.6±0.5±0.6 MeV/c2 and M(Sigma(c)++) − M(Lambda(c)+) = 167.6±0.6±0.6 MeV/c2. Finally, we measure the relative photoproduction cross sections for Lambda(c)★+ and Sigma(c) with respect to the (inclusive) photoproduction cross section for Lambda(c)+.
Study of higher mass charm baryons decaying to Lambda(c)+ / P.L. Frabetti, H.W.K. Cheung, J.P. Cumalat, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R.W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J.M. Bishoph, N.M. Cason, C.J. Kennedy, G.N. Kim T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A. Lopez, G.P. Grim, V.S. Paolone, P.M. Yager, J.R. Wilson, P.D. Sheldon, F. Davenport, G.R. Balckett, K. Danyo, M. Pisharody, T. Handler, B.G. Cheon, J.S. Kang, K.Y. Kim. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 365:1-4(1996), pp. 461-469. [10.1016/0370-2693(95)01458-6]
Study of higher mass charm baryons decaying to Lambda(c)+
G. Alimonti;G. Bellini;B. Caccianiga;M. Di Corato;M. Giammarchi;F. Leveraro;E. Meroni;G. Gianini;
1996
Abstract
We report on the study of charm baryons decaying to Lambda(c)+: Lambda(c)★+(2625) → Lambda(c)+pi+pi−, Lambda(c)★+(2593) → Lambda(c)+pi+pi−, Sigma(c)0 → Lambda(c)+pi− and Sigma(c)++ → Lambda(c)+pi+. We present a confirmation of the state Lambda(c)*+ (2593) and determine its mass difference to be M(Lambda(c)★+(2593)) − M(Lambda(c)+) = 309.2 ± 0.7 ± 0.3 MeV/c2. We determine the lower limit on the resonant branching ratio to be BR(Lambda(c)*+(2593) -> Sigma(c) pi(+-)/ Lambda(c)*+(2593)-> Lambda(c)+ pi+ pi-) > 0.51 (90% c.l.). We also measure the mass differences M(Sigma(c)0) − M(Lambda(c)+) = 166.6±0.5±0.6 MeV/c2 and M(Sigma(c)++) − M(Lambda(c)+) = 167.6±0.6±0.6 MeV/c2. Finally, we measure the relative photoproduction cross sections for Lambda(c)★+ and Sigma(c) with respect to the (inclusive) photoproduction cross section for Lambda(c)+.
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