CaltechAUTHORS
  A Caltech Library Service

Probing supersymmetry beyond the reach of LEP2 at the Fermilab Tevatron: Low |M^3| dark matter models

Baer, Howard and Mustafayev, Azar and Profumo, Stefano and Tata, Xerxes (2007) Probing supersymmetry beyond the reach of LEP2 at the Fermilab Tevatron: Low |M^3| dark matter models. Physical Review D, 75 (3). Art. No. 035004. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:BAEprd07

[img]
Preview
PDF - Published Version
See Usage Policy.

446Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:BAEprd07

Abstract

In supersymmetric models where the magnitude of the GUT scale gaugino mass parameter M3 is suppressed relative to M1 and M2, the lightest neutralino can be a mixed higgsino-bino state with a thermal relic abundance in agreement with the WMAP central value for OmegaCDMh2 and consistent with all other phenomenological constraints. In these models, the gluino can be as light as 200 GeV without conflicting with the LEP2 bounds on the chargino mass. Thus, gluino pair production can be accessible at the Fermilab Tevatron at high rates. In this framework, gluinos decay radiatively with a large branching fraction to a gluon plus a neutralino. We find that experiments at the Fermilab Tevatron, with 5 fb-1 of integrated luminosity, will be sensitive to g-tilde g-tilde production in the mg-tilde~200–350 GeV range via the multi-jet+ETmiss and multi-jet+[script-l]+[script-l]-+ETmiss channels at the 5sigma level, while trilepton signatures are expected to be below this level of detectability. Dilepton mass edges from both Z-tilde2 and Z-tilde3 decays may be measurable in the dilepton+multi-jet+ETmiss channel.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/0.1103/PhysRevD.75.035004OtherUNSPECIFIED
ORCID:
AuthorORCID
Profumo, Stefano0000-0002-9159-7556
Additional Information:© 2007 The American Physical Society (Received 17 October 2006; published 8 February 2007) We would like to thank A. Belyaev and J.-F. Grivaz for useful discussions. This research was supported in part by grants No. DE-FG02-97ER41022, DE-FG02-95ER40896, DE-FG03-92-ER40701, DE-FG02-ER41291, and DE-FG02-05ER41361 DE-FG02-04ER41308 from the United States Department of Energy, NASA NNG05GF69G from NASA and the Wisconsin Alumni Research Foundation.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-97ER41022
Department of Energy (DOE)DE-FG02-95ER40896
Department of Energy (DOE)DE-FG03-92-ER40701
Department of Energy (DOE)DE-FG02-ER41291
Department of Energy (DOE)DE-FG02-05ER41361
Department of Energy (DOE)DE-FG02-04ER41308
NASANNG05GF69G
Wisconsin Alumni Research FoundationUNSPECIFIED
Subject Keywords:supersymmetry; sparticles; dark matter; grand unified theory; sparticle production; elementary particle jets
Issue or Number:3
Record Number:CaltechAUTHORS:BAEprd07
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:BAEprd07
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7460
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:21 Feb 2007
Last Modified:02 Oct 2019 23:42

Repository Staff Only: item control page