Natural supersymmetry and b→sγ constraints

Koji Ishiwata, Natsumi Nagata, Norimi Yokozaki

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


We investigate constraints from the observed branching ratio for b→sγ and fine-tuning in the framework of natural supersymmetry. The natural supersymmetry requires the large trilinear coupling of the stop sector, light higgsinos (a small μ parameter) and light stops, in order to reduce the fine-tuning in the Higgs sector while avoiding the LEP constraint. It is found that in such a scenario 5% (10%) level of fine-tuning is inevitable due to the b→sγ constraint even if the messenger scale is as low as 10 5GeV(10 4GeV), provided that the gaugino masses satisfy the GUT relation.

Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1
Publication statusPublished - 2012 Mar 29
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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