Measurement of the lifetime of charged and neutralD mesons with high resolution silicon strip detectors

Autor: M. Rozanska, A. R. Gillman, E. Belau, L. W. Wiggers, W. Hoogland, A. Wylie, Martine Bosman, C. Hardwick, G. de Rijk, J. Richardson, J. Kemmer, U. Stierlin, R. Klanner, Z. Hajduk, H. Palka, E. Neugebauer, R. Bailey, V. Chabaud, Hans Dijkstra, G. Lutz, S. Kwan, P. Weilhammer, J. Malos, U. Kötz, K. Rybicki, T. Böhringer, M. Turala, Fred Wickens, S. Gill, T. Zeludziewicz, C.J.S. Damerell, M. Pepé, H.G.J.M. Tiecke, G. Lütjens, B.D. Hyams, R. J. Tapper, G. Waltermann, W. Männer, R.S. Gilmore, H. J. Seebrunner, C. Daum
Rok vydání: 1985
Předmět:
Zdroj: Zeitschrift f�r Physik C Particles and Fields. 28:357-363
ISSN: 1434-6052
0170-9739
DOI: 10.1007/bf01413598
Popis: We have measured the lifetime of charged and neutralD mesons using high resolution silicon strip detectors in the NA11 spectrometer at the CERN SPS. TheD mesons were produced in 200 GeV π− interactions. We obtain a value of $$\tau _{D^ \pm } = \left( {10.6\begin{array}{*{20}c} { + 3.6} \\ { - 2.4} \\ \end{array} } \right) \cdot 10^{ - 13} s$$ based on 28, and $$\tau _{D^0 } = \left( {3.7\begin{array}{*{20}c} { + 1.0} \\ { - 0.7} \\ \end{array} } \right) \cdot 10^{ - 13} s$$ based on 26 fully reconstructed decays for the lifetime of the charged and the neutralD meson, respectively. For the ratio $$\tau _{D^ \pm } /\tau _{D^0 }$$ we find 2.8 −0.8 +1.1 .
Databáze: OpenAIRE
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