Do About Half the Top Quarks at FNAL Come From Gluino Decays?

Details Do About Half the Top Quarks at FNAL Come From Gluino Decays? Do About Half the Top Quarks at FNAL Come From Gluino Decays?

1996-05-19

arxiv.org/abs/hep-ph/9605351v1

Phys.Rev.Lett.77:3502-3505,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, including 4 Postscript figures, uses epsf.tex, also available at http://www.hep.anl.gov/theory/mrenna/

Scientific paper

10.1103/PhysRevLett.77.3502

We argue that it is possible to make a consistent picture of FNAL data including the production and decay of gluinos and squarks. The additional cross section is several pb, about the size of that for Standard Model (SM) top quark pair production. If the stop squark mass is small enough, about half of the top quarks decay to stop squarks, and the loss of SM top quark pair production rate is compensated by the supersymmetric processes. This behavior is consistent with the reported top quark decay rates in various modes and other aspects of the data, and suggests several other possible decay signatures. This picture can be tested easily with more data, perhaps even with the data in hand, and demonstrates the potential power of a hadron collider to determine supersymmetric parameters. It also has implications for the top mass measurement and the interpretation of the LEP $R_b$ excess.

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