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

作者信息

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, Gollin G D, Hans R M, Johnson E, Karliner I, Marsh M A, Plager C, Sedlack C, Selen M, Thaler J J, Williams J, Edwards K W, Janicek R, Patel P M, Sadoff A J, Ammar R, Bean A, Besson D, Zhao X, Anderson S, Frolov V V, Kubota Y, Lee S J, Mahapatra R, O'Neill J J, Poling R, Riehle T, Smith A, Stepaniak C J, Urheim J, Ahmed S, Alam M S, Athar S B, Jian L, Ling L, Saleem M, Timm S, Wappler F, Anastassov A, Eckhart E, Gan K K, Gwon C, Hart T, Honscheid K, Hufnagel D, Kagan H, Kass R, Pedlar T K, Schwarthoff H, Thayer J B, von Toerne E, Zoeller M M, Richichi S J, Severini H, Skubic P, Undrus A, Chen S, Fast J, Hinson J W, Lee J, Miller D H, Shibata E I, Shipsey I P, Pavlunin V, Cronin-Hennessy D, Lyon A L, Thorndike E H, Savinov V, Coan T E, Fadeyev V, Gao Y S, Maravin Y, Narsky I, Stroynowski R, Ye J, Wlodek T

机构信息

Syracuse University, Syracuse, New York 13244, USA.

出版信息

Phys Rev Lett. 2001 May 14;86(20):4479-82. doi: 10.1103/PhysRevLett.86.4479.

DOI:10.1103/PhysRevLett.86.4479

PMID:11384263

Abstract

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.

摘要