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Measurement of various decay modes of charmed particlesD 0,D +,D + s andΛ c s

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Zeitschrift für Physik C Particles and Fields

Abstract

In the CERN NA 32 experiment a high-resolution silicon vertex detector and a purely topological approach have been used to investigate various decays of charmed particles. We observe ∼620 fully reconstructed decays ofD 0 in 12 channels and determine the branching ratios. For fourD 0 decay modes involving a single (unseen) π0 the small and narrowD *+−D 0 mass difference is used to measure their branching ratios. We also observe ∼280 fully reconstructedD + decays in 10 channels, ∼90D + s decays in 11 channels as well as 160Λ c s and 18 decay channels ofD +. For theD + s , we measure the branching fractions within a subset of 16 three- and five-prong decay channels. For theΛ c s , we determine the branching fractions within a sample of 11 three- and five-prong decay channels, nearly all involving a proton.

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Author information

Author notes

  1. S. Barlag

    Present address: KNMI, De Bilt, NL

  2. H. Becker

    Present address: Gesamthochschule, Saarbrücken, FRG

  3. T. Böhringer

    Present address: University of Lausanne, Lausanne, CH

  4. V. Castillo

    Present address: Univ. of Valencia, Valencia, Spain

  5. D. P. Kelsey

    Present address: Rutherford Appleton Lab., Chilton, Didcot, UK

  6. R. Klanner

    Present address: DESY, Hamburg, FRG

  7. E. Neugebauer

    Present address: Universität-GH Siegen, Siegen, FRG

  8. M. Pepe

    Present address: CERN, Geneva, Switzerland

  9. J. Richardson

    Present address: Univ. of Geneva, Geneva, CH

  10. T. Zeludziewicz

    Present address: University of Melbourne, Melbourne, Australia

Authors and Affiliations

  1. NIKHEF-H, Amsterdam, The Netherlands

    C. Daum, H. G. Tiecke & L. W. Wiggers

  2. University of Bristol, Bristol, UK

    R. Gilmore, T. Gooch & J. Malos

  3. CERN, CH-1211, Geneva 23, Switzerland

    T. Böhringer, V. Castillo, V. Chabaud, D. P. Kelsey, S. Kwan, H. J. Seebrunner & P. Weilhammer

  4. Institute of Nuclear Physics, PL-30-055, Cracow, Poland

    L. Görlich, Z. Hajduk, H. Palka, K. Rybicki, M. Witek & T. Zeludziewicz

  5. Max-Planck-Institut für Physik, D-8000, München, Federal Republic of Germany

    S. Barlag, H. Becker, M. Bosman, H. Dietl, R. Klanner, B. Lücking, G. Lütjens, G. Lutz, W. Männer, E. Neugebauer, U. Stierlin & G. Waltermann

  6. Rutherford Appleton Laboratory, Chilton, Didcot, UK

    C. Damerell, A. Gillman, M. Pepe, J. Richardson & F. Wickens

  7. IFIC, CSIC and University of Valencia, Valencia, Spain

    P. Gras & E. Higon

  8. Brunel University, Uxbridge, Mddx, UK

    S. Watts

Authors
  1. S. Barlag
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  2. H. Becker
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  3. T. Böhringer
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  4. M. Bosman
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  5. V. Castillo
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  6. V. Chabaud
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  7. C. Damerell
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  8. C. Daum
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  9. H. Dietl
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  10. A. Gillman
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  17. D. P. Kelsey
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  18. R. Klanner
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  19. S. Kwan
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  20. B. Lücking
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  32. H. G. Tiecke
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  33. G. Waltermann
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  34. S. Watts
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  35. P. Weilhammer
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  36. F. Wickens
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  37. L. W. Wiggers
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  38. M. Witek
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  39. T. Zeludziewicz
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ACCMOR Collaboration., Barlag, S., Becker, H. et al. Measurement of various decay modes of charmed particlesD 0,D +,D + s andΛ c s . Z. Phys. C - Particles and Fields 48, 29–45 (1990). https://doi.org/10.1007/BF01565603

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  • DOI: https://doi.org/10.1007/BF01565603

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