A Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons

TL;DR

This paper searches for unusual production of heavy-flavor quark jets alongside W bosons at the Fermilab Tevatron, comparing observed data with standard model predictions to identify potential anomalies.

Contribution

It introduces a method to enhance heavy-flavor jet detection in W+jets events and sets upper limits on anomalous production rates using collider data.

Findings

No significant deviation from the standard model observed.

Established upper limits on anomalous heavy-flavor production.

Validated jet tagging techniques for heavy-flavor identification.

Abstract

We present a search for anomalous production of heavy-flavor quark jets in association with a W boson at the Fermilab Tevatron ppbar Collider. This search is conducted through an examination of the exclusive jet spectrum of W+jets final states in which the heavy-flavor quark content has been enhanced by requiring at least one tagged jet in an event. Jets are tagged by the combined use of two algorithms, one based on semileptonic decays of b/c hadrons, and the other on their lifetimes. We compare data in e+jets (164 pb-1) and mu+jets (145 pb-1) channels, collected with the D0 detector at sqrt{s}=1.96 TeV, to expectations from the standard model, and set upper limits on anomalous production of such events.