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U.S. Department of Energy
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Hadroproduction of. lambda. /sub c/. -->. pK. pi

Technical Report ·
OSTI ID:6920492
Production of the charmed baryon ..lambda../sub c/ has been observed in n-nucleus collisons at the Proton East area of FNAL. A 5sigma peak was seen in the decay mode ..lambda../sub c//sup /plus// ..-->.. pK/sup /minus//..pi../sup /plus// (and charged congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for ..lambda../sub c//sup +/ at ..sqrt..s = 33 GeV was measured to be sigma /center dot/ BR = 2.1 +- 1.1 (+-.74)..mu..b/nucleon for 0.028 < x/sub f/ < 0.226. The fraction of ..lambda../sub c//sup +//(..lambda../sub c//sup +/ + ..lambda../sub c//sup /minus/) was estimated to be 78% /plus minus/ 18%. 40 refs.
Research Organization:
Illinois Univ., Urbana (USA). Graduate Coll.
DOE Contract Number:
AC02-76ER01195
OSTI ID:
6920492
Report Number(s):
DOE/ER/01195-T9; ON: DE88014946
Country of Publication:
United States
Language:
English