We analyze the contributions to the neutrinoless double β decay (0νββ-decay) coming from the Grand Unified Theory (GUT) constrained Minimal Supersymmetric Standard Model (MSSM) with trilinear R-parity breaking. We discuss the importance of two-nucleon and pion-exchange realizations of the quark-level 0νββ-decay transitions. In this context, the questions of reliability of the calculated relevant nuclear matrix elements within the Renormalized Quasiparticle Random Phase Approximation (pn-RQRPA) for several medium and heavy open-shell nuclei are addressed. The importance of gluino and neutralino contributions to 0νββ-decay is also analyzed. We review the present experiments and deduce limits on the trilinear R-parity breaking parameter λ ′ 111 from the non-observability of 0νββ-decay for different GUT constrained SUSY scenarios. In addition, a detailed study of limits on the MSSM parameter space coming from the B → X s γ processes by using the recent CLEO and OPAL results is performed. Some studies in respect to the future 0νββ-decay project GENIUS are also presented.12.60. Jv,11.30.Er,23.40.Bw Typeset using REVT E X 1 .
The Minimal Supersymmetric Standard Model with gauge mediated supersymmetry breaking and trilinear R-parity violation is applied to the description of neutrinoless double beta decay. A detailed study of limits on the parameter space coming from the B → Xsγ processes by using the recent CLEO results is performed. The importance of two-nucleon and pion-exchange realizations of 0νββ decay together with gluino and neutralino contributions to this process are addressed. We have deduced new limits on the trilinear R-parity breaking parameter λ ′ 111 from the non-observability of 0νββ in several medium and heavy open-shell nuclei for different gauge mediated breaking scenarios. In general, they are stronger than those known from other analyses. Also some studies with respect to the future 0νββ projects are presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.