Unified, flavor symmetric explanation for the tt asymmetry and Wjj excess at CDF

Journal Article · Tue Nov 01 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.094007· OSTI ID:21608013

Nelson, Ann E; Roy, Tuhin S ^[1]; Okui, Takemichi ^[2]

---

1. Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
2. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)

We present a simple, perturbative, and renormalizable model with a flavor symmetry which can explain both the tt forward-backward asymmetry and the bump feature present in the dijet mass distribution of the W+jj sample in the range 120-160 GeV that was recently reported by the CDF collaboration. The flavor symmetry not only ensures the flavor/CP safety of the model, but also relates the two anomalies unambiguously. It predicts a comparable forward-backward asymmetry in cc. The forward-backward asymmetry in bb is, however, small. A bump in the dijet mass distribution in Z+jj sample is also predicted but with a suppressed cross section.

• OSTI ID: 21608013
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COMPOSITE MODELS
CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
FERMILAB COLLIDER DETECTOR
FLAVOR MODEL
GEV RANGE
GEV RANGE 100-1000
MASS DISTRIBUTION
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
PARTICLE MODELS
PERTURBATION THEORY
QUARK MODEL
RADIATION DETECTORS
RENORMALIZATION
SIMULATION
SPATIAL DISTRIBUTION
SYMMETRY