Extracting the depolarization coefficient D_NN from data measured with a full acceptance detector

F. Hauenstein; H. Clement; R. Dzhygadlo; W. Eyrich; A. Gillitzer; D. Grzonka; S. Jowzaee; J. Ritman; E. Roderburg; M. Roeder; P. Wintz

doi:10.1016/j.nima.2016.01.093

arXiv · 1508.04908

Extracting the depolarization coefficient D_NN from data measured with a full acceptance detector

F. Hauenstein·H. Clement·R. Dzhygadlo·W. Eyrich·A. Gillitzer·D. Grzonka·S. Jowzaee·J. Ritman·E. Roderburg·M. Roeder·P. Wintz

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Abstract

The spin transfer from vertically polarized beam protons to Lambda or Sigma hyperons of the associated strangeness production pp -> pK Lambda (Sigma) is described with the depolarization coefficient D_NN. As the polarization of the hyperons is determined by their weak decays, detectors, which have a large acceptance for the decay particles, are needed. In this paper a formula is derived, which describes the depolarization coefficient D_NN by count rates of a 4 pi detector. It is shown, that formulas, which are given in publications for detectors with restricted acceptance, are specific cases of this formula for a 4 pi detector.

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F. Hauenstein, H. Clement, R. Dzhygadlo, W. Eyrich, A. Gillitzer, D. Grzonka, S. Jowzaee, J. Ritman, E. Roderburg, M. Roeder, P. Wintz. 2015-08-20. Extracting the depolarization coefficient D_NN from data measured with a full acceptance detector. https://doi.org/10.1016/j.nima.2016.01.093

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