Measurement of {ital {Lambda}{sup 0}{sub b}} Lifetime Using {ital {Lambda}{sup 0}{sub b}{r_arrow}{Lambda}{sup +}{sub c}}{ital l}{sup {minus}}{bar {nu}}
Journal Article
·
· Physical Review Letters
OSTI ID:286996
The lifetime of {Lambda}{sup 0}{sub {ital b}} is measured using the semileptonic decay {Lambda}{sup 0}{sub {ital b}}{r_arrow}{Lambda}{sup +}{sub {ital c}}l{sup {minus}}{bar {nu}}, where the {Lambda}{sup +}{sub {ital c}} is reconstructed through its decay {Lambda}{sup +}{sub {ital c}}{r_arrow}{ital pK{sup {minus}}}{pi}{sup +}. The data were collected by the CDF detector at the Tevatron Collider during 1992{endash}1995 and correspond to an integrated luminosity of 110pb{sup {minus}1} of {ital p{bar p}} collisions at {radical}{ital s}=1.8 TeV. From a fit to the decay length distribution of the {Lambda}{sub {ital c}}-lepton system from 197{plus_minus}25 signal events, the lifetime of {Lambda}{sup 0}{sub {ital b}} is measured to be 1.32{plus_minus}0.15{plus_minus}0.07 ps. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286996
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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