Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2)

Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2)
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Release: 2005
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The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb[sup -1] of p[bar p] collisions at [radical]s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 [+-] 0.07(stat) [+-] 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c[sup 2], and lightest neutralino of 93 GeV/c[sup 2] at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.

Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2)

Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2)
Author: Min Suk Kim
Publisher:
Total Pages: 120
Release: 2004
Genre:
ISBN:

Download Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2) Book in PDF, Epub and Kindle

The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 {+-} 0.07(stat) {+-} 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c{sup 2}, and lightest neutralino of 93 GeV/c{sup 2} at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.

Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at {u221A}s

Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at {u221A}s
Author:
Publisher:
Total Pages: 135
Release: 2004
Genre:
ISBN:

Download Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at {u221A}s Book in PDF, Epub and Kindle

The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb-1 of p$ar{p}$ collisions at √s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 ± 0.07(stat) ± 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c2, and lightest neutralino of 93 GeV/c2 at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.

A Search for New Physics in Photon-lepton Events in Proton-antiproton Collisions At[radical] S

A Search for New Physics in Photon-lepton Events in Proton-antiproton Collisions At[radical] S
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Release: 2003
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ISBN:

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We present the results of a search in p[bar p] collisions at[radical]s= 1.8 TeV for anomalous production of events containing a photon with large transverse energy and a lepton (e or[mu]) with large transverse energy, using 86 pb[sup -1] of data collected at the Collider Detector at Fermilab during the 1994-95 collider run at the Fermilab Tevatron. The presence of large missing transverse energy (E[sub T]), additional photons, or additional leptons in these events is also analyzed. The results are consistent with standard model expectations, with the possible exception of photon-lepton events with large E[sub T], for which the probability of a statistical fluctuation of the standard model expectation up to and above the observed level is 0.7%.

Search for Anomalous Kinematics of Top Dilepton Events in Proton - Anti-proton Collisions at S**(1/2)

Search for Anomalous Kinematics of Top Dilepton Events in Proton - Anti-proton Collisions at S**(1/2)
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Release: 2005
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The authors present a search for anomalous kinematics of t[bar t] dilepton events in p[bar p] collisions at [radical]s = 1.96 TeV using 193 pb[sup -1] of data collected with the CDF II detector. They developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from Standard Model expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy and they find that the probability to obtain a data sample less consistent with the Standard Model than what is observed is 1.0-4.5%.