Using data from the FOCUS experiment (FNAL-E831), we study the decay of Lambda(c)(+) baryons into final states containing a Lambda hyperon. The branching fractions of Lambda(c)(+) into Lambda pi(+), Lambda pi(+)pi(+)pi(-) and Lambda(K) over bar K-0(+) relative to that into pK(-)pi(+) are measured to be 0.217 +/- 0.013 +/- 0.020, 0.508 +/- 0.024 +/- 0.024 and 0.142 +/- 0.018 +/- 0.022, respectively. We also report new measurements of Gamma(Lambda(c)(+)->Sigma(0)pi(+))/Gamma(Lambda(c)(+)->Lambda pi(+)) = 1.09 +/- 0.11 +/- 0.19, Gamma(Lambda(c)(+)->Sigma pi(+)pi(+)pi(-))/Gamma(Lambda(c)(+)->Lambda pi(+)pi(+)pi(-)) = 0.26 +/- 0.06 +/- 0.09 and Gamma(Lambda(c)(+) ->Xi(1690)(0)(Lambda(K) over bar (0))K+)/Gamma(Lambda c+->Lambda(K) over bar K-0(+)) = 0.32 +/- 0.10 +/- 0.04. Further, an analysis of the subresonant structure for the Lambda(c)(+) -> Lambda pi(+)pi(+)pi(-) decay mode is presented.
Study of Lambda(+)(c) Cabibbo favored decays containing a Lambda baryon in the final state / J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Castromonte, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sanchez-Hernandez, C. Uribe, F. Vazquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, K. Stenson, J.N. Butler, Falso Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, S. Pacetti, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. Di Corato, P. Dini, L. Edera, S. Erba, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D.L. Pegna, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, C. Gobel, H. Hernandez, A.M. Lopez, H. Mendez, A. Paris, J. Quinones, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, E. Luiggi, J.E. Moore, M. Nehring, P.D. Sheldon, E.W. Vaandering, M. Webster, M. Sheaff. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 624:1-2(2005), pp. 22-30. [10.1016/j.physletb.2005.08.014]
Study of Lambda(+)(c) Cabibbo favored decays containing a Lambda baryon in the final state
F. Leveraro;G. Gianini;
2005
Abstract
Using data from the FOCUS experiment (FNAL-E831), we study the decay of Lambda(c)(+) baryons into final states containing a Lambda hyperon. The branching fractions of Lambda(c)(+) into Lambda pi(+), Lambda pi(+)pi(+)pi(-) and Lambda(K) over bar K-0(+) relative to that into pK(-)pi(+) are measured to be 0.217 +/- 0.013 +/- 0.020, 0.508 +/- 0.024 +/- 0.024 and 0.142 +/- 0.018 +/- 0.022, respectively. We also report new measurements of Gamma(Lambda(c)(+)->Sigma(0)pi(+))/Gamma(Lambda(c)(+)->Lambda pi(+)) = 1.09 +/- 0.11 +/- 0.19, Gamma(Lambda(c)(+)->Sigma pi(+)pi(+)pi(-))/Gamma(Lambda(c)(+)->Lambda pi(+)pi(+)pi(-)) = 0.26 +/- 0.06 +/- 0.09 and Gamma(Lambda(c)(+) ->Xi(1690)(0)(Lambda(K) over bar (0))K+)/Gamma(Lambda c+->Lambda(K) over bar K-0(+)) = 0.32 +/- 0.10 +/- 0.04. Further, an analysis of the subresonant structure for the Lambda(c)(+) -> Lambda pi(+)pi(+)pi(-) decay mode is presented.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
