학술논문
Correcting the energy scale nonlinearity of the electromagnetic calorimeter by two-photon decays of a π meson.
Document Type
Article
Author
Source
Subject
*CALORIMETERS
*ELECTROMAGNETIC devices
*NONLINEAR theories
*PHOTONS
*PHYSICS experiments
*PARTICLES (Nuclear physics)
MESON decay
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Language
ISSN
0020-4412
Abstract
A method for correcting the nonlinearity of the electromagnetic calorimeter response is described. This method is based on minimizing the deviation of the measured mass of a neutral π meson decaying into two photons, depending on their energy. This method has been developed for the LGD2 electromagnetic calorimeter and used in the Hyperon-M experiment at the U-70 accelerator of the Institute for High Energy Physics. The proposed correction technique has made it possible to substantially reduce variations of the reconstructed π and η meson masses in accordance with their minimum energies. [ABSTRACT FROM AUTHOR]