Abstract
Recent indications of the 125 GeV Higgs at the LHC can be explained in a relatively high-scale SUSY scenario where the sparticle masses are multi-TeV as is realized in the focus-point region. However, it suffers from the notorious cosmological Polonyi problem. We argue that the Polonyi problem is solved and thermal or non-thermal leptogenesis scenario works successfully, if a certain Polonyi coupling to the inflaton is enhanced by a factor of 10–100.
Highlights
The ATLAS [1] and CMS [2] collaborations reported event excesses, which may imply the Higgs boson with mass of about 125 GeV
While it is difficult to explain the Higgs mass in the minimal supersymmetric standard model (MSSM) as long as the sparticle masses are around 1 TeV [3], such a Higgs mass can be explained if the sparticles are heavier than multi-TeV [4,5,6,7]
One of such scenarios is the anomaly-mediated SUSY breaking (AMSB) model [8], where the sfermions and the gravitino are O(100–1000) TeV and the gaugino masses are O(100–1000) GeV, given by the AMSB relation. Phenomenological aspects of this scenario have been discussed in Refs. [6, 9, 10], and it was shown that it is compatible with thermal leptogenesis [11, 12], which requires the reheating temperature as high as TR 109 GeV [13]
Summary
The ATLAS [1] and CMS [2] collaborations reported event excesses, which may imply the Higgs boson with mass of about 125 GeV. While it is difficult to explain the Higgs mass in the minimal supersymmetric standard model (MSSM) as long as the sparticle masses are around 1 TeV [3], such a Higgs mass can be explained if the sparticles are heavier than multi-TeV [4,5,6,7] One of such scenarios is the anomaly-mediated SUSY breaking (AMSB) model [8], where the sfermions and the gravitino are O(100–1000) TeV and the gaugino masses are O(100–1000) GeV, given by the AMSB relation. [6, 9, 10], and it was shown that it is compatible with thermal leptogenesis [11, 12], which requires the reheating temperature as high as TR 109 GeV [13].1 Another attractive scenario is that all sparticles are O(10) TeV in the gravity-mediated SUSY breaking. We consider explicit inflation models to see if there is an allowed parameter space where the Polonyi and gravitino problems are solved
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