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Search for Randall-Sundrum gravitons in the dielectron and diphoton final states with 5.4fb$^{-1}$ of data from $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV

Description: Using 5.4 fb{sup -1} of integrated luminosity from p{bar p} collisions at {radical}s = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider, we search for decays of the lightest Kaluza-Klein mode of the graviton in the Randall-Sundrum model to ee and {gamma}{gamma}. We set 95% C.L. lower limits on the mass of the lightest graviton between 560 GeV and 1050 GeV for values of the coupling k/{bar M}{sub Pl} between 0.01 and 0.1.
Date: April 1, 2010
Creator: Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; U., /Oklahoma; Abolins, Maris A.; U., /Michigan State et al.
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Partner: UNT Libraries Government Documents Department
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Measurement of Time-dependent CP-Violating Asymmetries in B0 -> K+K-K0L Decays

Description: The authors present preliminary measurements of the Cp asymmetry parameters and CP content in B{sup 0} {yields} K{sup +}K{sup -}K{sub L}{sup 0} decays, with B{sup 0} {yields} {phi}K{sub L}{sup 0} events excluded. In a sample of 227 M B{bar B} pairs collected by the BABAR detector at the PEP-II B Factory at SLAC, they find the CP parameters to be S = 0.07 {+-} 0.28(stat){sub -0.12}{sup +0.11}(syst); C = 0.54 {+-} 0.22(stat){sub -0.09}{sup +0.08}(syst) where the first error is statistical and the… more
Date: September 20, 2005
Creator: Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New constraints on muon-neutrino to electron-neutrino transitions in MINOS

Description: This letter reports results from a search for {nu}{sub {mu}}{yields}{nu}{sub {mu}} transitions by the MINOS experiment based on a 7 x 1020 protons-on-target exposure. Our observation of 54 candidate e events in the Far Detector with a background of 49.1 {+-} 7.0(stat.) {+-} 2.7(syst.) events predicted by the measurements in the Near Detector requires 2 sin2(2{theta}13) sin2{theta}23 < 0.12 (0.20) at the 90% C.L. for the normal (inverted) mass hierarchy at {delta}CP = 0. The experiment sets t… more
Date: June 1, 2010
Creator: Adamson, P.; Andreopoulos, C.; Auty, D. J.; Ayres, D. S.; Backhouse, C.; Barr, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Search for new physics in high mass electron-positron events in p anti-p collisions at s**(1/2) = 1.96-TeV

Description: We report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150-950 GeV/c{sup 2} using 1.3 fb{sup -1} of p{bar p} collision data at {radical}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{prime} with a mass below 923 GeV/c{sup 2} and the Randall-Sundrum graviton with a mass below 807 GeV/c{sup 2} for k/{bar M}… more
Date: July 1, 2007
Creator: Aaltonen, T.; Abulencia, A.; Adelman, J.; Affolder, Anthony Allen; Akimoto, T.; Albrow, Michael G. et al.
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Partner: UNT Libraries Government Documents Department
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Study of the D0 \to Pi Pi- Pi0 Decay at BaBar

Description: The Dalitz-plot of the decay D{sup 0} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup 0} measured by the BABAR collaboration shows the structure of a final state having quantum numbers I{sup G}J{sup PC} = 0{sup -}0{sup 2-}. An isospin analysis of this Dalitz-plot finds that the fraction of the I = 0 contribution is about 96%. This high I = 0 contribution is unexpected because the weak interaction violates the isospin.
Date: April 6, 2012
Creator: Gaspero, Mario
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Partner: UNT Libraries Government Documents Department
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Searches for new phenomena with lepton final states at the Tevatron

Description: Numerous searches for new phenomena have been carried out using data from proton-antiproton collisions at Fermilab's Tevatron. Final states with leptons give signatures which are relatively unique and generally have small backgrounds. We present many of the latest results from the CDF and D0 collaborations from 0.4-1.2 fb{sup -1} of data. Topics include supersymmetry, extra gauge bosons, Randall-Sundrum gravitons, excited electrons and neutral, long-lived particles.
Date: May 1, 2007
Creator: Adams, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Observation of Single Top Quark Production

Description: The field of experimental particle physics has become more sophisticated over time, as fewer, larger experimental collaborations search for small signals in samples with large components of background. The search for and the observation of electroweak single top quark production by the CDF and D0 collaborations at Fermilab's Tevatron collider are an example of an elaborate effort to measure the rate of a very rare process in the presence of large backgrounds and to learn about the properties of… more
Date: January 1, 2011
Creator: Heinson, Ann & Junk, Tom R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Search for high-mass resonances decaying into $ZZ$ in p$\bar{p}$ collisions at $\sqrt{s}=1.96$\,TeV

Description: The authors search for high-mass resonances decaying into Z boson pairs using data corresponding to 6 fb{sup -1} collected by the CDF experiment in p{bar p} collisions at {radical}s = 1.96 TeV. The search is performed in three distinct final states: ZZ {yields} {ell}{sup +}{ell}{sup -}{ell}{sup +}{ell}{sup -}, ZZ {yields} {ell}{sup +}{ell}{sup -}{nu}{nu}, and ZZ {yields} {ell}{sup +}{ell}{sup -}jj. For a Randall-Sundrum graviton G*, the 95% CL upper limits on the production cross section times … more
Date: November 1, 2011
Creator: Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A measurement of the neutral current neutrino-nucleon elastic cross section at MiniBooNE

Description: The neutral current neutrino-nucleon elastic interaction {nu} N {yields} {nu} N is a fundamental process of the weak interaction ideally suited for characterizing the structure of the nucleon neutral weak current. This process comprises {approx}18% of neutrino events in the neutrino oscillation experiment, MiniBooNE, ranking it as the experiment's third largest process. Using {approx}10% of MiniBooNE's available neutrino data, a sample of these events were identified and analyzed to determine t… more
Date: February 1, 2008
Creator: Cox, David Christopher
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Rare Nonleptonic Decays of the Omega Hyperon: Measurements of the Branching Ratios for Omega-+ --> Xi*0(1530) (anti-Xi*0(1530)) pi-+ and Omega-+ --> Xi-+ pi+- pi-+

Description: A clean signal of 78 (24) events has been observed in the rare nonleptonic particle (antiparticle) decay modes {Omega}{sup {-+}} {yields} {Xi}{sup {-+}}{pi}{sup {+-}}{pi}{sup {-+}} using data collected with the HyperCP spectrometer during Fermilab's 1999 fixed-target run. We obtain B({Omega}{sup -} {yields} {Xi}{sup -}{pi}{sup +}{pi}{sup -}) = [4.32 {+-} 0.56(stat) {+-} 0.28(syst)] x 10{sup -4} and B({Omega}{sup +} {yields} {Xi}{sup +}{pi}{sup -}{pi}{sup +}) = 3.13 {+-} 0.71(stat) {+-} 0.20(sys… more
Date: December 1, 2007
Creator: Kamaev, Oleg
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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A Search for Neutrino Induced Coherent NC($\pi^{0}$) Production in the MINOS Near Detector

Description: The production of single, highly forward {pi}{sup 0} mesons by NC coherent neutrino-nucleus interactions ({nu}{sub {mu}} + N {yields} {nu}{sub {mu}} + N + {pi}{sup 0}) is a process which probes fundamental aspects of the weak interaction. This reaction may also pose as a limiting background for long baseline searches for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations if the neutrino mixing angle {theta}{sub 13} is very small. The high-statistics sample of neutrino interactions recorded by the… more
Date: November 1, 2010
Creator: Cherdack, Daniel David & U., /Tufts
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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$p/bar{p}$ Cross Sections for the Tevatron Energy Scan

Description: The Tevatron energy scan will present unique operational challenges for the CDF detector as a whole and the CLC luminosity detector in particular. The primary concern for CLC operations is the energy dependence of the p{bar p} cross section. In this note, values for the hadronic p{bar p} cross section at the center-of-mass energies to be visited during the scan are tabulated.
Date: January 1, 2011
Creator: Goldschmidt, Nathan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Future Measurements of W Boson Helicity in t -> Wb at CDF

Description: The interactions of the top quark will soon be coming under greater scrutiny at CDF with Run II of the Fermilab Tevatron collider. This investigation gauges CDF's improved ability to measure the helicity of W bosons produced in top quark decays. Such measurements will provide a direct indication of the spin structure of the weak interaction responsible for the top decay process. Simulated CDF Run II data is used to study the W helicity sensitivity of the muon momentum in {mu} + jets events, as … more
Date: February 1, 2002
Creator: Tweedie, Brock
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Search for universal extra dimensions in ppbar collisions

Description: We present a search for Kaluza-Klein (KK) particles predicted by models with universal extra dimensions (UED) using a data set corresponding to an integrated luminosity of 7.3 fb{sup -1}, collected by the D0 detector at a p{bar p} center of mass energy of 1.96 TeV. The decay chain of KK particles can lead to a final state with two muons of the same charge. This signature is used to set a lower limit on the compactification scale of R{sup -1} > 260 GeV in a minimal UED model.
Date: December 1, 2011
Creator: Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; U., /Oklahoma; Acharya, Bannanje Sripath; Inst., /Tata et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement of Inclusive Jet Cross Sections in Z/gamma*(->e+e-) + jets Production in ppbar Collisions at s**(1/2) = 1.96 TeV with the CDF Detector

Description: This Ph.D. thesis presents the measurement of inclusive jet cross sections in Z/{gamma}* {yields} e{sup +}e{sup -} events using 1.7 fb{sup -1} of data collected by the upgraded CDF detector during the Run II of the Tevatron. The Midpoint cone algorithm is used to search for jets in the events after identifying the presence of a Z/{gamma}* boson through the reconstruction of its decay products. The measurements are compared to next-to-LO (NLO) pQCD predictions for events with one and two jets in… more
Date: April 1, 2008
Creator: Salto Bauza, Oriol
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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A combined muon-neutrino and electron-neutrino oscillation search at MiniBooNE

Description: MiniBooNE seeks to corroborate or refute the unconfirmed oscillation result from the LSND experiment. If correct, the result implies that a new kind of massive neutrino, with no weak interactions, participates in neutrino oscillations. MiniBooNE searches for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations with the Fermi National Accelerator Laboratory 8 GeV beam line, which produces a {nu}{sub {mu}} beam with an average energy of {approx} 0.8 GeV and an intrinsic {nu}{sub e} content of 0.4%. T… more
Date: July 1, 2006
Creator: Monroe, Jocelyn R.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Inclusive jet production studies at the Tevatron using the CDF detector

Description: Quantum Chromodynamics (QCD) is the gauge theory that governs the strong interactions between quarks and gluons inside hadrons like, for example, protons and neutrons. It shows two well established characteristics, related to the non-Abelian nature of the theory, that dominate its phenomenology: asymptotic freedom and color confinement. The dependence of the strong coupling, {alpha}{sub s}(Q{sup 2}), with the hard scale is such that it decreases with decreasing the distance between partons. Thi… more
Date: March 1, 2007
Creator: Norniella, Olga
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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A Measurement of the Pseudoscalar DecayConstant fDs using Charm-Tagged Events in e+e- Collisions at the Y(4S)

Description: The decay constant f{sub D{sub s}} of the pseudoscalar strange charm meson D{sub s}{sup +} is an important benchmark test of the theoretical methods that quantitatively describe the nonperturbative low-energy regime of QCD, the theory of the strong interaction. A confirmation of the validity of these predictive methods, foremost lattice QCD, in the sector of heavy-light meson decay constants increases trust in the calculation of f{sub B}, which is an important number for the measurement of the … more
Date: October 10, 2006
Creator: Stelzer, Jorg
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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