TY - JOUR
T1 - The MSSM without gluinos; an effective field theory for the stop sector
AU - Aebischer, Jason
AU - Crivellin, Andreas
AU - Greub, Christoph
AU - Yamada, Youichi
N1 - Funding Information:
Acknowledgements J. A. and C. G. acknowledge the support from the Swiss National Science Foundation. The work of A.C. was supported by a Marie Curie Intra-European Fellowship of the European Community’s 7th Framework Programme under contract number (PIEF-GA-2012-326948) and by an Ambizione Grant of the Swiss National Science Foundation.
Publisher Copyright:
© 2017, The Author(s).
PY - 2017/11/1
Y1 - 2017/11/1
N2 - In this article we study the MSSM with stops and Higgs scalars much lighter than gluinos and squarks of the first two generations. In this setup, one should use an effective field theory with partial supersymmetry in which the gluino and heavy squarks are integrated out in order to connect SUSY parameters (given at a high scale) to observables in the stop sector. In the construction of this effective theory, valid below the gluino mass scale, we take into account O(α3) and O(Yt,b2) effects and calculate the matching as well as the renormalization group evolution. As a result, the running of the parameters for the stop sector is modified with respect to the full MSSM and SUSY relations between parameters are broken. We show that for some couplings sizable numerical differences exist between the effective field theory approach and the naive calculation based on the MSSM running.
AB - In this article we study the MSSM with stops and Higgs scalars much lighter than gluinos and squarks of the first two generations. In this setup, one should use an effective field theory with partial supersymmetry in which the gluino and heavy squarks are integrated out in order to connect SUSY parameters (given at a high scale) to observables in the stop sector. In the construction of this effective theory, valid below the gluino mass scale, we take into account O(α3) and O(Yt,b2) effects and calculate the matching as well as the renormalization group evolution. As a result, the running of the parameters for the stop sector is modified with respect to the full MSSM and SUSY relations between parameters are broken. We show that for some couplings sizable numerical differences exist between the effective field theory approach and the naive calculation based on the MSSM running.
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U2 - 10.1140/epjc/s10052-017-5318-3
DO - 10.1140/epjc/s10052-017-5318-3
M3 - Article
AN - SCOPUS:85033702314
SN - 1434-6044
VL - 77
JO - European Physical Journal C
JF - European Physical Journal C
IS - 11
M1 - 740
ER -