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Showing 1 to 20 of 144 for “"Elementary Particles and High Energy"”.
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Antiparticle to particle ratios in gold+gold and copper+copper collisions at the Relativistic Heavy Ion Collider.
Antiparticle to particle ratios in gold+gold and copper+copper collisions at the Relativistic Heavy Ion Collider.
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Improved Search for Heavy Neutral Scalars A and H Using ttZ Events from 13 TeV pp Collisions at CMS
… presents a search for heavy neutral scalars A and H via the cascade decay A->ZH with H->tt and semileptonic decays of the top quarks. The search is performed using proton-proton collision data recorded by the CMS experiment at sqrt(s) = 13 TeV during LHC Run 2, corresponding to an integrated …
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Neutrino-nucleus neutral current elastic interactions measurement in MiniBooNE
… using an intense neutrino flux with an average energy of about 700 MeV. From 2002 to 2009 MiniBooNE has accumulated more than 1.0x10^{21} protons on target (POT) in both neutrino and antineutrino modes. MiniBooNE provides a perfect platform for detailed measurements of exclusive and …
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TOPICS IN QUANTUM FIELD THEORY
… term is equal to the change in the zero point energy of the theory due to the presence of a non-vanishing background field. The one loop term is carefully evaluated in Euclidean space, and the positivity of the one-loop eigenvalues is related to classical stability in terms of energy …
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First-Principles Study of Electronic Structure and Optical Properties of Semiconductor Surfaces Unified Approach for Exact Calculation of Coupling Coefficients of Quantum Angular Momenta
… coupled to a generic dissipative environment and driven by a periodic force which in the semiclassical limit is equivalent to a continuous-wave electromagnetic field. The time evolution is calculated via iterative evaluation of the path integral. We show that in the case where the temperature …
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Analysis of the Vector Boson Self Interaction and the Search for Anomalous Couplings at Center-of-Mass Energy = 1.8 TeV Proton-Antiproton Collisions
Made available in DSpace on 2015-09-25T20:02:33Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3017052.pdf: 8821547 bytes, checksum: f5bb890607af3b59bcc503dca82c4078 (MD5) Previous issue date: 2001
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Mixing and Doubly Cabibbo -Suppressed Decays of Neutral Charmed Mesons
"A study of the decay D0 → K+pi-pi+pi - is presented. This ""wrong-sign"" decay can proceed through either a doubly Cabibbo-suppressed decay or mixing to a D¯0 followed by the Cabibbo-favored (or ""right-sign"") decay D0 → K-pi+pi-pi +. The Cabibbo-favored decay is used as a …
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Studies of the Semileptonic Decays of D Mesons
… present new measurements of the branching ratios and decay distributions for the decays D+ → K¯ *0ℓ+nuℓ. We observe an asymmetry in the K¯*0 angular decay distribution that we interpret as evidence for a previously unobserved s-wave K-pi+ amplitude that interferes with the …
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Scale of Fermion Mass Generation
… Lambda EWSB ≡ 8pv ≈ 1 TeV. Appelquist and Chanowitz have derived an analogous upper bound on the scale of fermion mass generation, proportional to v 2/mf, by considering the scattering of same-helicity fermions into pairs of longitudinal weak vector bosons in a theory without a standard …
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Measurement of the Differential Angular Distribution of the W Boson Produced in Association With Jets in Proton -Antiproton Collisions at Center of Mass Energy = 1.8 TeV
We also present the Standard Model prediction for the W angular coefficients Ai as a function of pWT , using a W+jet Monte Carlo event generator, which includes gluon loops. The prediction for three of the angular coefficients (A1, A4 and A6) is presented for the first time.
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A Search for CP Violation in and a Dalitz Analysis of Neutral D Mesons Decaying to Pions, Antipions, and Neutral Pions in CLEO II.V
… from the rho- pi+, rho+pi-, rho 0pi0, and non-resonant channels, and present results of the amplitudes, phases, and fit fractions for these and other sub-modes. No significant evidence for the sigma(500) or any other resonance was found. ACP has been measured as 0.01+0.09-0.07 +/- 0.09.
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A Measurement of B Hadron Correlations in Proton-Antiproton Collisions at Center of Mass Energy = 1.8 TeV
… provide input into the significance of higher-order bb¯ production mechanisms. We present a study of B hadron correlations in pp¯ collisions at s = 1.8 TeV. Events containing a bb¯ pair are identified by the presence of an energetic electron or muon and both B hadrons in …
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A Measurement of the Branching Fraction B(positive Strange D Meson Decays to Meson Positive Pion) at CLEO
… data collected with the CLEO II detector at CESR and the known value of BD0→K +p- , I determine BD+s→ fp+ = (2.45 +/- 0.42(stat.) +/- 0.19(syst.))%.
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Measurement of the CP Asymmetry in Semimuonic B Decays Produced in Proton-Antiproton Collisions at Center of Mass Energy= 1.96 TeV
We measure the asymmetry between positive and negative same-sign muon pairs originating from semileptonic decays of pairs of B hadrons. Low transverse momentum dimuon pairs are evaluated to determine B hadron content using a log likelihood fit to two-dimensional impact parameter significance …
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On Extracting Hadron Multiplicities and Unpolarized Nucleon Structure Ratios From SIDIS Data at the HERMES Experiment
… of the HERA accelerator between the years 2000 and 2006. The hadron multiplicity from these scattering events is extracted for identified charged pions, kaons and protons from two different gaseous targets (H & D). For the hydrogen (deuterium) target 12.5 (16.68) million events were recorded. …
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Search for Single Top Quark Production With the CDF Run II Detector Using a Multivariate Likelihood Method
Made available in DSpace on 2015-09-25T20:03:07Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3337708.pdf: 3969434 bytes, checksum: 18e6d533a50f7bdc9fdefb07e9c3096e (MD5) Previous issue date: 2008
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A Measurement of the Top-Antitop Production Cross Section in Proton-Antiproton Collisions at Center of Mass Energy = 1.96 TeV Using Soft Muon Tagging
Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Determination of the Neutral B Meson and Neutral B(s) Meson Mixing Matrix Elements in 2+1 Lattice QCD
This report presents a calculation and results for the matrix elements relevant for the analysis of B0 -- B¯0 mixing using the Asqtad (light-quark) and Fermilab (heavy-quark) actions. The calculation is performed on the 2+1 MILC ensembles at three different lattice spacings, and uses staggered …
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