Some Lifetimes and Branching Ratios for Charmed Hadrons Produced in the Fermilab Wide-Band Photon Beam

Technical Report · Mon Oct 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/1855260· OSTI ID:1855260

Shephard, W. D. ^[1]

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1. Univ. of Notre Dame, IN (United States); et al.

Preliminary values are presented for lifetimes of the $$Λ_{c}^{+}$$ decaying into $pK^⁻π^+$ and $$D_{8}^+$$ decaying into Φπ. Also presented are preliminary results on samples of $$D^0→\overline{K^0}K^+K^⁻$$, including $$D^0→\overline{K^0}Φ$$, and $$D^0→\overline{K^0}π^+π^⁻$$ decays. The data are from the first run of Fermilab experiment E687 using the Fermilab Wide-Band Photon Spectrometer. Our lifetime values are (0.20±0.03±0.03) ps for the $$Λ_{c}^{+}$$ and (0.50±0.06±0.03) ps for the $$D_{8}^+$$. We find preliminary values for the branching ratios $$B(D^0→\overline{K^0}K^+K^⁻)/B(D^0→\overline{K^0}π^+π^⁻)$$ and $$B(D^0→\overline{K^0}Φ)/B(D^0→\overline{K^0}π^+π^⁻)$$ of 0.20 ± 0.06 and 0.16 ± 0.06, respectively; only statistical errors are quoted. Further work is in progress.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Italian lstituto Nazionale di Fisica Nucleare; Ministero della Universita' e della Ricerca Scientifica
• Contributing Organization: E-687
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1855260
• Report Number(s): FERMILAB-FN-0557; oai:inspirehep.net:300995
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS