Measurement of the tt[over-bar] production cross section in pp[over-bar] collisions at [sqrt]s=1.96TeV using events with large missing transverse energy and jets
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چکیده
Citation Aaltonen, T. et al.(CDF Collaboration). "Measurement of the tt[over-bar] production cross section in pp[over-bar] collisions at [sqrt]s=1.96TeV using events with large missing transverse energy and jets. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Measurement of the t t production cross section in p p collisions at ffiffi ffi s p ¼ 1:96 TeV using events with large missing transverse energy and jets MEASUREMENT OF THE t " t PRODUCTION CROSS. .. In this paper we report a measurement of the t " t production cross section in p " p collisions at ffiffi ffi s p ¼ 1:96 TeV using data corresponding to an integrated luminosity of 2:2 fb À1 collected with the CDF II detector at the Tevatron accelerator. We select events with significant missing transverse energy and high jet multiplicity. This measurement vetoes the presence of explicitly identified electrons and muons, thus enhancing the tau contribution of t " t decays. Signal events are discriminated from the background using a neural network, and heavy flavor jets are identified by a secondary-vertex tagging algorithm. We measure a t " t production cross section of 7:99 AE 0:55ðstatÞ AE 0:76ðsystÞ AE 0:46ðlumiÞ pb, assuming a top mass m top ¼ 172:5 GeV=c 2 , in agreement with previous measurements and standard model predictions.
منابع مشابه
Search for single top quark production in p(p)over-bar collisions at root s=1.96 TeV in the missing transverse energy plus jets topology
Search for single top quark production in p(p)over-bar collisions at root s=1.96 TeV in the missing transverse energy plus jets topology Search for single top quark production in p p collisions at ffiffi ffi s p ¼ 1:96 TeV in the missing transverse energy plus jets topology We report a search for single top quark production with the CDF II detector using 2:1 fb À1 of integrated luminosity of p ...
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