Measurement of the Ds ± lifetime
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Overview
abstract
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We report a precise measurement of the Ds± meson lifetime. The data were taken by the SELEX experiment (E781) spectrometer using 600 GeV/c ∑-, π- and p beams. The measurement has been done using 918 reconstructed Ds±. The lifetime of the Ds± is measured to be 472.5 ± 17.2 ± 6.6 fs, using K*(892)0K± and φπ± decay modes. The lifetime ratio of Ds± to D0 is 1.145 ± 0.049. © 2001 Elsevier Science B.V. All rights reserved.
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British Skin Foundation, BSF Grant
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Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, BMBWF Grant
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Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP Grant
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Israel Academy of Sciences and Humanities Grant
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Istituto Nazionale di Fisica Nucleare, INFN Grant
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National Science Foundation, NSF: 9602178, Phy 9602178 Grant
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North Atlantic Treaty Organization, NATO: CR6.941058-1360-94 Grant
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Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAK Grant
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U.S. Department of Energy, USDOE: DE-AC02-76CHO3000, DE-FG02-91ER40664 Grant
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Universidad Autónoma de San Luis Potosí, UASLP Grant
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Research
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article; half life time; maximum likelihood method; negative pi meson; radiation dose; radioisotope decay; spectrometry; statistics
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