0000000000358819

AUTHOR

Sang Woon Lee

showing 3 related works from this author

Precision Measurement of theX(3872)Mass inJ/ψπ+π−Decays

2009

We present an analysis of the mass of the X(3872) reconstructed via its decay to J/psi pi(+)pi(-) using 2.4 fb(-1) of integrated luminosity from p (p) over bar collisions at root s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. The possible existence of two nearby mass states is investigated. Within the limits of our experimental resolution the data are consistent with a single state, and having no evidence for two states we set upper limits on the mass difference between two hypothetical states for different assumed ratios of contributions to the observed peak. For equal contributions, the 95% confidence level upper limit on the mass difference is 3.6 MeV/c(2). Un…

PhysicsParticle physicsMeson010308 nuclear & particles physicsHadronTevatronGeneral Physics and AstronomyQuarkonium7. Clean energy01 natural sciencesLuminosityNuclear physicsParticle decayPion0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsX(3872)Physical Review Letters
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Inclusive Search for Standard Model Higgs Boson Production in the WW Decay Channel using the CDF II Detector

2010

We present a search for standard model (SM) Higgs boson production using p (p) over bar collision data at root s = 1. 96 TeV, collected with the CDF II detector and corresponding to an integrated luminosity of 4. 8 fb(-1). We search for Higgs bosons produced in all processes with a significant production rate and decaying to two W bosons. We find no evidence for SM Higgs boson production and place upper limits at the 95% confidence level on the SM production cross section (sigma(H)) for values of the Higgs boson mass (m(H)) in the range from 110 to 200 GeV. These limits are the most stringent for m(H) > 130 GeV and are 1.29 above the predicted value of sigma(H) for m(H) 165 GeV.

COLLISIONSParticle physicsZ-GAMMA PRODUCTION; HADRON COLLIDERS; QCD CORRECTIONS; NNLO QCD; COLLISIONS; FERMILABGeneral Physics and AstronomyLibrary scienceFOS: Physical sciencesddc:500.2114 Physical sciences01 natural sciencesZ-GAMMA PRODUCTIONBildungWorld classHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)NNLO QCDBasic research0103 physical sciencesHADRON COLLIDERSFERMILAB010306 general physicsChinaPhysicshep-ex010308 nuclear & particles physicsPhysicsHigh Energy Physics::Phenomenology3. Good healthChristian ministryHigh Energy Physics::ExperimentQCD CORRECTIONS
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Measurement of the top quark mass andpp¯→tt¯cross section in the all-hadronic mode with the CDF II detector

2010

We present a measurement of the top quark mass and of the top-antitop pair production cross section using p-pbar data collected with the CDFII detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb-1. We select events with six or more jets satisfying a number of kinematical requirements imposed by means of a neural network algorithm. At least one of these jets must originate from a b quark, as identified by the reconstruction of a secondary vertex inside the jet. The mass measurement is based on a likelihood fit incorporating reconstructed mass distributions representative of signal and background, where the abs…

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsTop quarkMass distribution010308 nuclear & particles physicsHadronTevatron01 natural sciencesBottom quarkNuclear physicsPair production0103 physical sciencesMass spectrumHigh Energy Physics::Experiment010306 general physicsPhysical Review D
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