Search for the Top Quark at $\sqrt{s}$ = 1.8-TeV

Abstract

We present a search for the top quark in pp-collisions at Vs 1.8 TeV using the CDF detector at the Fermilab Tevatron Collider. We use 21.4 pb-1 of data collected during the 1992-93 Collider Run. In the minimal Standard Model, the top quark decays to a W boson and a b quark. To separate top events which decay into a lepton and jets from the W + multiet background, we identify b quarks via their semileptonic decays. In the W 3 or more 'et sample, we observe 7 events with an estimated background of 31 ± 03.

Endoscopic submucosal dissection of colonic lesions: first 50 cases at a local institution

“…A study conducted by a Korean group recorded a median time of 53 minutes for ESD, whereas another study by a Western country had a median time of 105 minutes. (13,14) The present study had median time of 80.9 minutes. Our results also showed that larger lesions required a longer procedure time.…”