Hadroproduction of $$\Lambda_c \to p K \pi$$

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

DOI:https://doi.org/10.2172/1433218· OSTI ID:1433218

Filaseta, John Eugene ^[1]

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1. Illinois U., Urbana

Production of the charmed baryon $$\Lambda_c$$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5$$\sigma$$ peak was seen in the decay mode $$\Lambda^+_c \to pK^- \pi+$$ (and charge conjugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $$\Lambda^+_c$$ 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 < $$x_f$$ < 0.226. The fraction of $$\Lambda^+_c$$ / ($$\Lambda^+_c + \Lambda^-_c$$) was estimated to be 78% $$\pm$$ 18%.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1433218
• Report Number(s): FERMILAB-THESIS-1987-18; RX-1220 (ILLINOIS); 255464
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS