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Request ID:
1203.0031
Analysis:
Search for New Physics in the Paired Dijet Mass Spectrum
Status:
Active
Requester:
Recast Audience:
all
Model Name:
RPV MSSM with ubar dbar dbar vertex
Selected Subscriber(s):
Thu, 03/29/2012 - 15:56 - Activated
Request Description and Potential
Reason for request:
Adding small R-parity violating terms to the supersymmetric extension of the SM is the simplest way to avoid the severe bounds from SUSY searches with MET. The least constrained RPV coupling is the ubar dbar dbar vertex, since this does not involve any leptons. A well-motivated model of this sort was presented in arXiv:1111.1239, where the smallness of these RPV couplings is related to the smallness of the Yukawa couplings. The most interesting case is when the LSP is the stop (or one of the squarks). In this case stops are pair produced and each decay predominantly to a bottom and a strange quark, forming dijet resonances, very similar to the case of the coloron decay considered in the original analysis. This search for pairs of dijet resonances is likely the most sensitive test of such models, and the fact that the resonance is an octet or a triplet should not be very important (apart from a reduced production cross section). It should be straightforward to extend the original analysis and place the first significant bounds on these types of well-motivated models that are one of the last refuges of low-scale natural supersymmetry. One additional possibility is that the use of b-tagging can significantly enhance the reach of the original analysis for the particular scenario with stop LSP's.
Additional Information:
I can provide LHE files upon request.
Request Parameter Points
Run Condition:
7 TeV
2.2/fb
Parameter Point1:
Sample Squark Diagram
LHE File:
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# of events:
Reference Cross Section:
 (fb)
Parameter Point2:
Sample Coloron Diagram
LHE File:
  Must subscribe and accept request to download file
# of events:
Reference Cross Section:
 (fb)