TAILIEUCHUNG - Higgs mass constraint on a low scale susy model

In this paper, we investigate a model of supersymmetry in the Randall-Sundrum spacetime with a low cutoff scale. Due to the warp factor, the Kaluza-Klein scale is warped down to O(100) TeV. With the MSSM superfields living in the bulk, the soft SUSY breaking terms of the 4D effective theory are derived from the original 5D Lagrangian by integrating out the extra-dimension. | Communications in Physics, Vol. 26, No. 4 (2016), pp. 369-379 DOI: HIGGS MASS CONSTRAINT ON A LOW SCALE SUSY MODEL TRAN MINH HIEU1,† , NGUYEN THU HUONG2 AND TRIEU QUYNH TRANG3 University of Science and Technology 2 VNU University of Science, Vietnam National University, Hanoi 3 Nam Dinh Teacher’s Training College 1 Hanoi † E-mail: Received 01 January 2017 Accepted for publication 18 February 2017 Abstract. Randal-Sundrum models have an interesting feature that an effective physical scale can be generated from a much larger one of the underlying theory. In this paper, we investigate a model of supersymmetry in the Randall-Sundrum spacetime with a low cutoff scale. Due to the warp factor, the Kaluza-Klein scale is warped down to O(100) TeV. With the MSSM superfields living in the bulk, the soft SUSY breaking terms of the 4D effective theory are derived from the original 5D Lagrangian by integrating out the extra-dimension. We examine the constraint of the Higgs boson mass measurement on the model. As a result, the viable parameter space with the ability to reproduce a 125 GeV Higgs mass is identified. The constraint rules out parameter regions with the stop masses larger than 20 TeV. Therefore, the parameter space of the model can be explored in a future 100 TeV collider. Keywords: Higgs boson, supersymmetry, Randall-Sundrum, extra-dimension. Classification numbers: , I. INTRODUCTION The discovery of a Higgs boson [1] by the ATLAS and CMS Colaborations at the Large Hadron Collider (LHC) has fulfilled the prediction of the standard model (SM). However, it also raises many questions that have challenged the SM for a long time. To address these questions, physics beyond the SM is necessary. One of the long-standing problem is the so-called gauge hierarchy problem. In a theory with a scalar field like the Higgs boson, the electroweak scale becomes unstable due to quantum corrections which are

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