Volume 82, Number 6, June 2008
|Number of page(s)||5|
|Section||The Physics of Elementary Particles and Fields|
|Published online||03 June 2008|
New contribution to dimension-five operators on proton decay in anomaly mediation scenario
Physik-Department, Technishe Universität München - James-Franck Strasse, D-85748 Garching, Germany, EU
2 Theory Division, KEK, Tsukuba 305-0801, Japan
3 Department of Particle and Nuclear Physics, The Graduate University for Advanced Studies (Sokendai) Oho 1-1, Tsukuba 305-0801, Japan
Accepted: 25 April 2008
In supergravity, effective superpotential relevant to dimension-five operators on proton decay processes also leads to supersymmetry-breaking terms among sfermions, dimension-four operators. These dimension-four operators induce the dimension-five operators through 1-loop diagrams dressed by gauginos. We find that, in a class of models with the anomaly mediation, the 1-loop contributions can be comparable to those at the tree level. Therefore, such operators have a great impact on the proton decay rate. Depending on a universal phase of gaugino masses and soft mass spectrum, the proton decay rate can be enhanced or suppressed.
PACS: 12.60.Jv – Supersymmetric models / 12.10.-g – Unified field theories and models / 11.30.Pb – Supersymmetry
© EPLA, 2008
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