Higgs decay to goldstini and its observability at the LHCReport as inadecuate



 Higgs decay to goldstini and its observability at the LHC


Higgs decay to goldstini and its observability at the LHC - Download this document for free, or read online. Document in PDF available to download.

Download or read this book online for free in PDF: Higgs decay to goldstini and its observability at the LHC
If supersymmetry is broken independently in multiple sectors with different scales, a number of goldstinos will be generated. One linear combination of these goldstinos is massless and eaten by the gravitino, while the orthogonal combinations acquire a tree level mass and become the physical states named goldstini (G). Compared to the gravitino, such goldstini could couple more strongly to the visible fields and lead to some exotic phenomenology. In this note we first check the goldstini couplings in some GMSB models and find that the goldstini-photon-neutralino interaction may be very small while the goldstini-Z-neutralino and goldstini-Higgs-neutralino interactions may be sizable. This can induce a new decay mode for the Higgs boson: h-> G+\chi -> Z+2G. Then in an effective model with conservative fixed parameters we study the observability of this decay channel at the LHC and find that it is not accessible at the finished 8 TeV run (25 -fb) or 14 TeV run with 100 -fb, but might be observed at the high luminosity LHC (14 TeV, 1000-3000 -fb) if the systematics of the backgrounds can be well understood.



Author: Tao Liu; Lin Wang; Jin Min Yang

Source: https://archive.org/



DOWNLOAD PDF




Related documents