Light Z' Bosons at the Tevatron

Journal Article · Tue Mar 01 04:00:00 EST 2011 · Phys.Rev.D83:115013,2011

DOI:https://doi.org/10.1103/PhysRevD.83.115013· OSTI ID:1018359

Buckley, Matthew R; Hooper, Dan; Kopp, Joachim; Neil, Ethan

New gauge bosons with standard model-like couplings to leptons are constrained by collider searches to be heavier than approximately -1 TeV. A Z' boson with suppressed couplings to leptons, however, could be much lighter and possess substantial couplings to standard model quarks. In this article, we consider a new leptophobic Z' gauge boson as a simple and well-motivated extension of the standard model, and discuss several of its possible signatures at the Tevatron. We find that three of the recent anomalies reported from the Tevatron - in particular, the top-quark forward-backward asymmetry and excesses in the 3b and W+2 jets final states - could be explained by a new Z' with a mass of approximately 150 GeV, relatively large couplings to quarks, and suppressed couplings to electrons and muons. Moreover, we find that such a particle could also mediate the interactions of dark matter, leading to potentially interesting implications for direct detection experiments.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: DOE Office of Science
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1018359
• Report Number(s): FERMILAB-PUB-11-154-A-T; arXiv eprint number arXiv:1103.6035
• Journal Information: Phys.Rev.D83:115013,2011, Journal Name: Phys.Rev.D83:115013,2011 Journal Issue: 11 Vol. 83; ISSN 1550-7998
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASYMMETRY
Astrophysics
Phenomenology-HEP
BOSONS
DETECTION
ELECTRONS
FERMILAB TEVATRON
LEPTONS
MUONS
NONLUMINOUS MATTER
QUARKS
STANDARD MODEL