Search for New Physics in Lepton + Photon + X Events with 929 pb-1 of ppbar Collisions at roots = 1.96 TeV (result for the summer'2006 conferences)

TL;DR

This paper reports a search for new physics phenomena in high-energy proton-antiproton collisions, focusing on events with a lepton and photon, using a large dataset and improved detector at Tevatron.

Contribution

It presents the first results from the CDF II detector with an order of magnitude more data and higher collision energy than previous searches, enhancing sensitivity to new physics.

Findings

No significant excess observed over Standard Model predictions

Set new limits on anomalous lepton-photon production

Demonstrated improved detection capabilities with CDF II

Abstract

We present results of a search in 929 pb-1 of ppbar collisions at 1.96 TeV for the anomalous production of events containing a charged lepton (electron or muon) and a photon, both with high transverse momentum, accompanied by additional signatures, X, including missing transverse energy and additional leptons and photons. We use the same selection criteria as in the previous CDF Run I search, but with an order-magnitude larger data set, a higher ppbar collision energy, and the CDF II detector.