The CDF dijet excess from intrinsic quarks

Details The CDF dijet excess from intrinsic quarks The CDF dijet excess from intrinsic quarks

2011-04-11

arxiv.org/abs/1104.1894v2

Eur. Phys. J. A 47 (2011) 152

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 latex pages, 1 figure. Version for journal publication

Scientific paper

10.1140/epja/i2011-11152-x

The CDF collaboration reported an excess in the production of two jets in association with a $W$. We discuss constraints on possible new particle state interpretations of this excess. The fact of no statistically significant deviation from the SM expectation for {$Z$+dijet} events in CDF data disfavors the new particle explanation. We show that the nucleon intrinsic strange quarks provide an important contribution to the $W$ boson production in association with a single top quark production. Such {$W$+t} single top quark production can contribute to the CDF {$W$+dijet} excess, thus the nucleon intrinsic quarks can provide a possible explanation to the CDF excess in {$W$+dijet} but not in {$Z$+dijet} events.

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