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A Study of the decay D0 ---> K+ pi-

Journal Article · · Phys.Rev.Lett.
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  1. UC, Davis
  2. Rio de Janeiro, CBPF
  3. CINVESTAV, IPN
  4. Colorado U.
  5. Fermilab
  6. Frascati
  7. Illinois U., Urbana
  8. Indiana U.
  9. Korea U.
  10. INFN, Milan; Milan U.
  11. North Carolina U.
  12. Pavia U.; INFN, Pavia
  13. Puerto Rico U., Mayaguez
  14. South Carolina U.
  15. Tennessee U.
  16. Vanderbilt U.
  17. Wisconsin U., Madison
Using a large sample of photoproduced charm mesons from the FOCUS experiment at Fermilab (FNAL-E831), we observe the decay $$D^0\to K^+\pi^-$$ with a signal yield of $$149\pm31$$ events compared to a similarly cut sample consisting of $$36760 \pm 195$$ $$D^0\to K^-\pi^+$$ events. We use the observed ratio of $$D^0\to K^+\pi^-$$ to $$D^0\to K^-\pi^+$$ $$(0.404\pm 0.085\pm 0.025)%$$ to obtain a relationship between the $D^0$ mixing and doubly Cabibbo suppressed decay parameters.
Research Organization:
Frascati; Vanderbilt U.; Korea U.; UC, Davis; INFN, Milan; Tennessee U.; CINVESTAV, IPN; Indiana U.; South Carolina U.; Puerto Rico U., Mayaguez; Milan U.; Pavia U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); North Carolina U.; Colorado U.; Wisconsin U., Madison; Rio de Janeiro, CBPF; Illinois U., Urbana; INFN, Pavia
Sponsoring Organization:
US Department of Energy
DOE Contract Number:
AC02-07CH11359
OSTI ID:
2568742
Report Number(s):
FERMILAB-PUB-00-341-E; oai:inspirehep.net:539005; arXiv:hep-ex/0012048
Journal Information:
Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 86
Country of Publication:
United States
Language:
English

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