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A fat gluino in disguise

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Abstract

In this paper, we investigate how a sizeable width-to-mass ratio for a gluino, as is for example realized in GMSB scenarios, could affect the discovery potential of gluinos at the LHC. More importantly, the influence of the gluino being “fat” on the standard mass and spin determination methods at the LHC are investigated. For this purpose, we focus on gluino production at the LHC, where we do not factorize the first step in the gluino decay cascade, but treat the following decay cascade steps in factorization, including full spin correlations. The effects of sizeable width-to-mass ratios from a few up to 15–20 per cent on the endpoint of several mass determination methods as well as on means for discrimination between BSM spin paradigms like SUSY and UED are studied.

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Notes

  1. E.g. M TGen [64], which is the minimum of M T2 for all possible momentum assignments into two partitions.

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Acknowledgements

We would like to thank N. Pietsch, K. Rolbiecki, and K. Sakurai for fruitful and enlightening discussions. J.R.R. wants to thank D. Rainwater, who partially initiated the idea for the studies performed here.

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  1. DESY Theory Group, Notkestr. 85, 22603, Hamburg, Germany

    Jürgen Reuter & Daniel Wiesler

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  1. Jürgen Reuter
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Correspondence to Jürgen Reuter.

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Reuter, J., Wiesler, D. A fat gluino in disguise. Eur. Phys. J. C 73, 2355 (2013). https://doi.org/10.1140/epjc/s10052-013-2355-4

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