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Lifetimes of charged and neutralD mesons |
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| Authors: | S. Barlag H. Becker T. Böhringer M. Bosman V. Castillo V. Chabaud D. Buchholz C. Damerell C. Daum H. Dietl H. Fawcett S. Gill A. Gillman R. Gilmore T. Gooch L. Görlich P. Gras Z. Hajduk E. Higon B. D. Hyams D. P. Kelsey J. Kemmer R. Klanner U. Kötz S. Kwan B. Lücking G. Lütiens G. Lutz J. Malos W. Männer E. Neugebauer H. Palka M. Pepé J. Richardson G. De Rijk K. Rybicki H. J. Seebrunner U. Stierlin H. G. Tiecke M. Turala G. Waltermann S. Watts P. Weilhammer F. Wickens L. W. Wiggers A. Wylie T. Zeludziewicz ACCMOR Collaboration |
| Affiliation: | 1. Max Planck Institut für Physik, D-8000, München, Germany 3. CERN, CH-1211, Geneva 23, Switzerland 7. Rutherford Laboratory, Chilton, OX11 0QX, Didcot, UK 8. NIKHEF-H, NL-1009 DB, Amsterdam, The Netherlands 9. University of Bristol, Bristol, UK 10. Institute of Nuclear Physics, PL-30055, Cracow, Poland 11. IFIC, CSIC and University of Valencia, Valencia, Spain 12. Technische Universit?t, D-8000, München, Germany |
| Abstract: | We have measured the lifetimes of hadronically produced charged and neutralD mesons using silicon microstrip detectors and an active silicon target in the NA32 spectrometer at the CERN SPS. We obtainτ D± = (10.9± 1.5 1.9 )·10?13s andτ D (?)10 = (4.2±0.5)·10?13s based on 59 and 90 fully reconstructed decays respectively, giving a ratioτ D±/τ D (?)10 of 2.6 ±0.5. |
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