Measurement of the lifetime of the charmed baryon Λc

• DOI: 10.1016/0370-2693(87)90583-1
• Publication Date: 2002-12-28T15:29:46Z
• Authors: S. Barlag; H. Becker; T. Böhringer; M. Bosman; V. Castillo; V. Chabaud; C. Damerell; C. Daum; H. Dietl; A. Gillman; R. Gilmore; T. Gooch; L. Görlich; P. Gras; Z. Hajduk; E. Higon; D.P. Kelsey; R. Klanner; S. Kwan; B. Lücking; G. Lütjens; V. Lüth; G. Lutz; J. Malos; W. Männer; E. Neugebauer; H. Palka; M. Pepe; J. Richardson; K. Rybicki; H.J. Seebrunner; U. Stierlin; H.G. Tiecke; G. Waltermann; S. Watts; P. Weilhammer; F. Wickens; L.W. Wiggers; T. Zeludziewicz
• Keywords: Charmed baryons; Electron–positron annihilation

Abstract We present results on a sample of Λc decays obtained in the NA32 experiment in 1985 using charge-coupled devices for vertex reconstruction and a trigger on Λc→pK−π+ (and charge conjugate). We observe a distinct peak at the Λc mass on zero background. The lifetime of the Λc is determined to be (1.4±0.30.5±0.3)x10−13 s based on a sample of 14 events.