Observation of new states decaying into Lambda+(c)pi(-)pi(+)

• Published in: Physical review letters 2001-05, Vol.86 (20), p.4479-4482
• Main Authors: Artuso, M, Ayad, R, Boulahouache, C, Bukin, K, Dambasuren, E, Karamov, S, Majumder, G, Moneti, G C, Mountain, R, Schuh, S, Skwarnicki, T, Stone, S, Wang, J C, Wolf, A, Wu, J, Kopp, S, Kostin, M, Mahmood, A H, Csorna, S E, Danko, I, McLean, K W, Xu, Z, Godang, R, Bonvicini, G, Cinabro, D, Dubrovin, M, McGee, S, Zhou, G J, Lipeles, E, Pappas, S P, Schmidtler, M, Shapiro, A, Sun, W M, Weinstein, A J, Würthwein, F, Jaffe, D E, Masek, G, Paar, H P, Potter, E M, Prell, S, Asner, D M, Eppich, A, Hill, T S, Morrison, R J, Briere, R A, Chen, G P, Gritsan, A, Alexander, J P, Baker, R, Bebek, C, Berger, B E, Berkelman, K, Blanc, F, Boisvert, V, Cassel, D G, Drell, P S, Duboscq, J E, Ecklund, K M, Ehrlich, R, Foland, A D, Gaidarev, P, Galik, R S, Gibbons, L, Gittelman, B, Gray, S W, Hartill, D L, Heltsley, B K, Hopman, P I, Hsu, L, Jones, C D, Kandaswamy, J, Kreinick, D L, Lohner, M, Magerkurth, A, Meyer, T O, Mistry, N B, Nordberg, E, Palmer, M, Patterson, J R, Peterson, D, Riley, D, Romano, A, Thayer, J G, Urner, D, Valant-Spaight, B, Viehhauser, G, Warburton, A, Avery, P, Prescott, C, Rubiera, A I, Stoeck, H, Yelton, J, Brandenburg, G, Ershov, A, Kim, D Y, Wilson, R, Bergfeld, T, Eisenstein, B I, Ernst, J, Gladding, G E
• Format: Article
• Language: English
• ISSN: 0031-9007
• DOI: 10.1103/PhysRevLett.86.4479

Using 13.7 fb(-1) of data recorded by the CLEO detector at the Cornell Electron Storage Ring, we investigate the spectrum of charmed baryons which decay into Lambda+(c)pi(-)pi(+) and are more massive than the Lambda+(c)(2625) baryon. We find evidence for two new states: one is broad and has an invariant mass roughly 480 MeV above that of the Lambda+(c) baryon; the other is narrow with an invariant mass of 596+/-1+/-2 MeV above the Lambda+(c) mass.