Baryonic Z{sup '} Explanation for the CDF Wjj Excess

Journal Article · Fri May 27 04:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.211803· OSTI ID:21538367

Cheung, Kingman ^[1]; Song, Jeonghyeon ^[1]

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1. Division of Quantum Phases and Devices, School of Physics, Konkuk University, Seoul 143-701 (Korea, Republic of)

The latest CDF anomaly, the excess of dijet events in the invariant-mass window 120-160 GeV in associated production with a W boson, can be explained by a baryonic Z{sup '} model in which the Z{sup '} boson has negligible couplings to leptons. Although this Z{sup '} model is hardly subject to the Drell-Yan constraint from Tevatron, it is constrained by the dijet data from UA2 ({radical}(s)=630 GeV), and the precision measurements at LEP through the mixing with the SM Z boson. We show that under these constraints this model can still explain the excess in the M{sub jj{approx}}120-160 GeV window, as well as the claimed cross section {sigma}(WZ{sup '}){approx}4 pb. Implications at the Tevatron would be the associated production of {gamma}Z{sup '}, ZZ{sup '}, and Z{sup '}Z{sup '} with the Z{sup '}{yields}jj. We show that with tightened jet cuts and improved systematic uncertainties both {gamma}Z{sup '}{yields}{gamma}jj and ZZ{sup '}{yields}l{sup +}l{sup -}jj channels could be useful to probe this model at the Tevatron.

• OSTI ID: 21538367
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYONS
BOSONS
COUPLINGS
CROSS SECTIONS
CYCLIC ACCELERATORS
DRELL MODEL
ELEMENTARY PARTICLES
ENERGY RANGE
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FERMIONS
GEV RANGE
GEV RANGE 100-1000
HADRONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEP STORAGE RINGS
LEPTONS
MEASURING INSTRUMENTS
RADIATION DETECTORS
STORAGE RINGS
SYNCHROTRONS
W MINUS BOSONS
W PLUS BOSONS
Z NEUTRAL BOSONS