Search for High-Mass Resonances Decaying Into Leptons of Different Flavor (e Mu, E Tau, Mu Tau) in P Anti-p Collisions at Sqrt(s)

Search for High-Mass Resonances Decaying Into Leptons of Different Flavor (e Mu, E Tau, Mu Tau) in P Anti-p Collisions at Sqrt(s)
Author:
Publisher:
Total Pages: 97
Release: 2008
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ISBN:

We present a search for high-mass resonances decaying into two leptons of different flavor: e[mu], e[tau], and [mu][tau]. These resonances are predicted by several models beyond the standard model, such as the R-parity-violating MSSM. The search is based on 1 fb−1 of data collected at the Collider Detector at Fermilab (CDF II) in proton anti-proton collisions. Our observations are consistent with the standard model expectations. The results are interpreted to set 95% C.L. upper limits on [sigma] x BR of {tilde {nu}}{sub [tau]} → e[mu], e[tau], [mu]{tau}.

SEARCH FOR HIGH-MASS RESONANCES DECAYING TO E-mu IN Ppbar COLLISIONS AT S**(1/2)

SEARCH FOR HIGH-MASS RESONANCES DECAYING TO E-mu IN Ppbar COLLISIONS AT S**(1/2)
Author: Kristian Allan Hahn
Publisher:
Total Pages: 126
Release: 2006
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We describe a general search for resonances decaying to a neutral e{mu} final state in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. Using a data sample representing 344 pb{sup -1} of integrated luminosity recorded by the CDF II experiment, we compare Standard Model predictions with the number of observed events for invariant masses between 50 and 800 GeV/c{sup 2}. Finding no significant excess (5 events observed vs. 7.7 {+-} 0.8 expected for M{sub e{mu}}> 100 GeV/c{sup 2}), we set limits on sneutrino and Z' masses as functions of lepton family number violating couplings.

Search for High-mass Resonances Decaying to E? in P$\bar{p}$ Collisions at {u221A}s

Search for High-mass Resonances Decaying to E? in P$\bar{p}$ Collisions at {u221A}s
Author:
Publisher:
Total Pages: 126
Release: 2006
Genre:
ISBN:

We describe a general search for resonances decaying to a neutral e? final state in p$\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV. Using a data sample representing 344 pb-1 of integrated luminosity recorded by the CDF II experiment, we compare Standard Model predictions with the number of observed events for invariant masses between 50 and 800 GeV/c2. Finding no significant excess (5 events observed vs. 7.7 ± 0.8 expected for Msube? /sub” 100 GeV/csup2

Search for High-Mass Resonances Decaying Into Leptons of Different Flavor (e?, E ?, ??) in P Anti-p Collisions at {u221A}(s)

Search for High-Mass Resonances Decaying Into Leptons of Different Flavor (e?, E ?, ??) in P Anti-p Collisions at {u221A}(s)
Author:
Publisher:
Total Pages: 97
Release: 2008
Genre:
ISBN:

We present a search for high-mass resonances decaying into two leptons of different flavor: e?, e ?, ??. These resonances are predicted by several models beyond the standard model, such as the R-parity-violating MSSM. The search is based on 1 fb-1 of data collected at the Collider Detector at Fermilab (CDF II) in proton anti-proton collisions. Our observations are consistent with the standard model expectations. The results are interpreted to set 95% C.L. upper limits on ? x BR of $ ilde{v}$? → e?, e ?, ??.

Search for High-mass Resonances Decaying Into $ZZ$ in P$\bar{p}$ Collisions at $\sqrt{s}

Search for High-mass Resonances Decaying Into $ZZ$ in P$\bar{p}$ Collisions at $\sqrt{s}
Author:
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Total Pages: 13
Release: 2011
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The authors search for high-mass resonances decaying into Z boson pairs using data corresponding to 6 fb−1 collected by the CDF experiment in p{bar p} collisions at √s = 1.96 TeV. The search is performed in three distinct final states: ZZ → ll−l+l−, ZZ → l+l−??, and ZZ → l+l−jj. For a Randall-Sundrum graviton G*, the 95% CL upper limits on the production cross section times branching ratio to ZZ,?(p{bar p} → G* → ZZ), vary between 0.26 pb and 0.045 pb in the mass range 300

Search for New Physics in High Mass Electron-positron Events in P Anti-p Collisions at S**ư

Search for New Physics in High Mass Electron-positron Events in P Anti-p Collisions at S**ư
Author:
Publisher:
Total Pages: 7
Release: 2007
Genre:
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We report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150-950 GeV/c2 using 1.3 fb−1 of p{bar p} collision data at √s=1.96 TeV collected by the CDF II detector at Fermilab. No significant evidence of such a resonance is observed and we interpret the results to exclude the standard model-like Z′ with a mass below 923 GeV/c2 and the Randall-Sundrum graviton with a mass below 807 GeV/c2 for k/{bar M}{sub pl} = 0.1, both at the 95% confidence level. Combining with di-photon data excludes the Randall-Sundrum graviton for masses below 889 GeV/c2 for k/{bar M}{sub pl} = 0.1.