Stueckelberg Z{sup '} extension with kinetic mixing and millicharged dark matter from the hidden sector

Journal Article · Fri Jun 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.115001· OSTI ID:20929563

Feldman, Daniel; Zuowei, Liu; Nath, Pran ^[1]

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1. Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States)

An analysis is given of the Stueckelberg extension of the standard model with a hidden sector gauge group U(1){sub X} where the mass growth for the extra gauge boson occurs via the Stueckelberg mechanism, and where the kinetic mixing in the U(1){sub X}xU(1){sub Y} sector is included. Such a kinetic mixing is generic in a broad class of supergravity and string models. We carry out a detailed global fit of the model with the precision CERN LEP data on and off the Z pole, with {chi}{sup 2} within 1% of the {chi}{sup 2} of the standard model fit. Further, it is shown that, in the absence of matter in the hidden sector, there is a single effective parameter that controls the deviations from the standard model predictions, and the dependence on the kinetic mixing emerges only when matter in the hidden sector is included. An analysis is also given of millicharged dark matter arising from the hidden sector, where it is shown that such dark matter from the Stueckelberg extension can satisfy WMAP-3 data while allowing for a sharp Z{sup '} resonance which can be detected at the Tevatron and at the CERN LHC via a dilepton signal generated by the Drell-Yan process.

• OSTI ID: 20929563
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CERN LHC
DRELL MODEL
FERMILAB TEVATRON
GAUGE INVARIANCE
LEP STORAGE RINGS
MASS
NONLUMINOUS MATTER
STANDARD MODEL
STRING MODELS
SUPERGRAVITY
U-1 GROUPS