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Measurement of radiative neutralino production

2012/02/28 by Christoph Bartels, Bartels, Christoph, O. Kittel +6
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #hep-ex #hep-ph

paper · pdf · doi:10.48550/arxiv.1202.6324

6 pages, 2 figures, to appear in the proceedings of the 2011 International Workshop on Future Linear Colliders (LCWS11), Sept. 26-30, Granada, Spain

openalex publication_date 2012/02/28 · arxiv created 2012/03/01 · arxiv updated 2012/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We perform the first experimental study with full detector simulation for the radiative production of neutralinos at the linear collider, at sqrts = 500 GeV and realistic beam polarizations. We consider all relevant backgrounds, like the Standard Model background from radiative neutrino production. The longitudinal polarized beams enhance the signal and simultaneously reduce the background, such that statistical errors are significantly reduced. We find that the photon spectrum from the signal process can be well isolated. The neutralino mass and the cross section can be measured at a few per-cent level, with the largest systematic uncertainties from the measurement of the beam polarization and the beam energy spectrum.

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