Phenomenology of mixed modulus-anomaly mediation in fluxed string compactifications and brane models

By Kiwoon Choi, K. Jeong, Ken-ichi Okumura. 2005

232 citations recorded by the source corpus.

In some string compactifications, for instance the recently proposed KKLT set-up, light moduli are stabilized by nonperturbative effects at supersymmetric AdS vacuum which is lifted to a dS vacuum by supersymmetry breaking uplifting potential. In such models, soft supersymmetry breaking terms are determined by a specific mixed modulus-anomaly mediation in which the two mediations typically give comparable contributions to soft parameters. Similar pattern of soft terms can arise also in brane models to stabilize the radion by nonperturbative effects. We examine some phenomenological consequences of this mixed modulus-anomaly mediation, including the pattern of low energy sparticle spectrum and the possibility of electroweak symmetry breaking. It is noted that adding the anomaly-mediated contributions at MGUT amounts to replacing the messenger scale of the modulus mediation by a mirage messenger scale (m3/2/MPl)?/2MGUT where ? = m3/2/[M0ln (MPl/m3/2)] for M0 denoting the modulus-mediated contribution to the gaugino mass at MGUT. The minimal KKLT set-up predicts ? = 1. As a consequence, for ? = (1), the model can lead to a highly distinctive pattern of sparticle masses at TeV scale, particularly when ? = 2.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/9cb330674883f2a2f701c49661bfde95437d4ccd

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In Astronomy and Astrophysics

1. Eran Palti
2. Michael J. Reece
3. JiJi Fan
4. Anshuman Maharana
5. T. Weigand
6. Seung-Joo Lee
7. W. Lerche
8. Gary Shiu

In Nuclear and High Energy Physics

1. Eran Palti
2. Anshuman Maharana
3. Michael J. Reece
4. JiJi Fan
5. M. Lisanti
6. L. Strigari
7. T. Weigand
8. W. Lerche

Citations in the corpus

• MODELS OF PARTICLE PHYSICS FROM TYPE IIB STRING THEORY AND F-THEORY: A REVIEW (2012, background): “This led to “mirage mediation” [91–95] phenomenology, a scenario with competing contributions from gravity mediation and anomaly mediation.”
• In wino veritas? Indirect searches shed light on neutralino dark matter (2013, background): “This type of spectrum is predicted by both the simplest version of anomaly mediation [6, 7] and a wide variety of moduli mediation scenarios [8–13].”