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 Title: Hadroproduction of Charmed Baryon Lambda ---> Proton, Kaon, Pion Author(s): Filaseta, John Eugene Department / Program: Physics Discipline: Physics Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Physics, Nuclear Abstract: Production of the charmed baryon $\Lambda\sb{\rm c}$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5$\sigma$ peak was seen in the decay mode $\Lambda\sbsp{\rm c}{+}$ $\to$ pK$\sp-\pi\sp+$ (and charge congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $\Lambda\sbsp{\rm c}{+}$ at $\sqrt{s}$ = 33 GeV was measured to be $\sigma$ $\cdot$ BR = 2.1 $\pm$ 1.1 ($\pm$.74)$\mu$b/nucleon for 0.028 $<$ x$\sb{f}$ $<$ 0.226. The fraction of $\Lambda\sbsp{\rm c}{+}$ / ($\Lambda\sbsp{\rm c}{+}$ + $\Lambda\sbsp{\rm c}{-}$) was estimated to be 78% $\pm$ 18%. Issue Date: 1987 Type: Text Language: English Description: 144 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987. URI: http://hdl.handle.net/2142/77413 Other Identifier(s): (UMI)AAI8803038 Date Available in IDEALS: 2015-05-13 Date Deposited: 1987
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