A search for high-mass resonances in the e(+)e(-) final state is presented based on 2: 5 fb(-1) of root s = 1.96 TeV p (p) over bar collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an e(+)e(-) invariant mass of 240 GeV/c(2). The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150-1000 GeV/c(2) is 0.6% ( equivalent to 2.5 sigma). We exclude the standard model coupling Z' and the Randall-Sundrum graviton for k/(M) over bar (P1) = 0.1 with masses below 963 and 848 GeV/c(2) at the 95% credibility level, respectively.

Search for High-Mass e(+) e(-) Resonances in p (p)over-bar Collisions at root s=1.96 TeV / T., A., J., A., T., A., M. G., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., A., A., T., A., A., A., W., A., A., A., A., A., F., A., P., A., W., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 102:3(2009), p. 031801. [10.1103/physrevlett.102.031801]

Search for High-Mass e(+) e(-) Resonances in p (p)over-bar Collisions at root s=1.96 TeV

GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;DE CECCO, Sandro
2009

Abstract

A search for high-mass resonances in the e(+)e(-) final state is presented based on 2: 5 fb(-1) of root s = 1.96 TeV p (p) over bar collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an e(+)e(-) invariant mass of 240 GeV/c(2). The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150-1000 GeV/c(2) is 0.6% ( equivalent to 2.5 sigma). We exclude the standard model coupling Z' and the Randall-Sundrum graviton for k/(M) over bar (P1) = 0.1 with masses below 963 and 848 GeV/c(2) at the 95% credibility level, respectively.
2009
01 Pubblicazione su rivista::01a Articolo in rivista
Search for High-Mass e(+) e(-) Resonances in p (p)over-bar Collisions at root s=1.96 TeV / T., A., J., A., T., A., M. G., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., A., A., T., A., A., A., W., A., A., A., A., A., F., A., P., A., W., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 102:3(2009), p. 031801. [10.1103/physrevlett.102.031801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/494724
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