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A High Statistics Measurement of the $$\Lambda^+_c$$ Lifetime

Journal Article · · Phys.Rev.Lett.
A high statistics measurement of the $$\Lambda_c^+$$ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis technique with particular attention to the determination of the systematic uncertainty. The measured value of 204.6 $$\pm$$ 3.4 (stat.) $$\pm$$ 2.5 (syst.) fs from 8034 $$\pm$$ 122 $$\Lambda_c \to pK\pi$$ decays represents a significant improvement over the present world average.
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
FOCUS
DOE Contract Number:
AC02-07CH11359
OSTI ID:
1892233
Report Number(s):
FERMILAB-PUB-02-015-E; arXiv:hep-ex/0202001; oai:inspirehep.net:582481
Journal Information:
Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 88
Country of Publication:
United States
Language:
English

References (9)

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Measurement of the Λ c + lifetime journal March 1993
High-energy-physics event generation with Pythia 6.1 journal April 2001
Non-factorization effects in heavy mesons and determination of |Vub| from inclusive semileptonic B decays journal August 2001
Description and performance of the Fermilab E687 spectrometer
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  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 320, Issue 3 https://doi.org/10.1016/0168-9002(92)90948-4
journal September 1992
Precision Measurements of the Λ c + and D 0 Lifetimes journal June 2001
Search forD0−D¯0Mixing journal May 2000
Measurement of Charm Meson Lifetimes journal June 1999
Lifetimes of charm and beauty hadrons journal October 1997

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