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Showing 1 to 16 of 16 for “"Semileptonic decays"”.
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Four-body semileptonic decays of D mesons
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2012-01-20T18:29:01Z No. of bitstreams: 1 1993_culbertson.pdf: 4021258 bytes, checksum: 20c8b29e5b491da7cac693bfa4beef66 (MD5)
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Studies of the Semileptonic Decays of D Mesons
… 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 K¯*0. These measurements are …
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Search for semileptonic decays of photoproduced charmed mesons
… data on a similar search for semi1eptonic decays of charmed baryons.
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Studies of the inclusive semileptonic decays of the b-hadrons
… 1995 data-taking periods, the inclusive b-hadron semileptonic branching fraction is measured to be B R b→ℓ % =10.75+/-0.15stat +/-0.28syst -0.24+0.43model . Along with the semileptonic branching fraction, the branching fractions for the cascade mode, b→c→ℓ , and the upper-vertex …
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Measurements of the B production cross section in proton-antiproton collisions at center of mass energy = 1.96 TeV using semileptonic decays of B hadrons
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-23T19:23:46Z No. of bitstreams: 1 Kraus_James.pdf: 4874409 bytes, checksum: 74194484a218fcd4e1133aab810f8fe0 (MD5)
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Measurement of the Ratio of Charged and Neutral 𝐵 Mesons in Υ (4𝑆) Events via Partial Reconstruction of the Semileptonic Decays 𝛣̅⁰⟶𝐷<sup>∗</sup>⁺ℓ⁻<sub>𝜈̅ℓ</sub> and 𝛣̅⁻⟶𝐷<sup>∗</sup>⁰ℓ<sub>𝜈̅ℓ</sub>
The decays, <img width=119 height=32 align=center src=https://vtechworks.lib.vt.edu/bitstream/handle/10919/28846/image006.gif> and <img width=119 height=29 align=center src=https://vtechworks.lib.vt.edu/bitstream/handle/10919/28846/image008.gif> are studied using data collected at the CLEO II …
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Measurement of |vcb| Using the Semileptonic Decay Λb → Λcμνμ
… decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon tracks, combined with a Λc baryon. The ground state Λ0b → Λ+c μ−νμ is isolated by a fit to …
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Centrality Effects on Heavy-Flavor Quark Production and Invariant Yield in PHENIX Proton–Gold Collisions at Center-of-Mass Energy 200 GeV, and Assembly, Testing, Calibration, and Installation of the sPHENIX Hadronic Calorimeters
… of electron tracks to study semileptonic decays from charm and bottom hadrons, and Bayesian unfolding to separate the two flavors. Additionally, this thesis presents background and analysis of the minimum-ionizing-particles observed by the sPHENIX hadronic calorimeter during …
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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
… 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 templates. Corrections are made for asymmetries …
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Improved Search for Heavy Neutral Scalars A and H Using ttZ Events from 13 TeV pp Collisions at CMS
… 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 luminosity of 138 fb^-1. The analysis targets …
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Probing New Physics Through Third Generation Leptons
… in terms of the neutrino mixing angles. The semileptonic decays of B meson to the τ lepton is mediated by a W boson in the SM. In many models of NP this decay gets contributions from additional states like new vector bosons, leptoquarks or new scalar particles. These new states affect the …
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Measurement and Interpretation of Moments of the Combined Hadronic Mass and Energy Spectrum in Inclusive Semileptonic B-meson Decays
… n_X^2 distribution measured in inclusive semileptonic decays of B mesons to final states containing a charm quark, B->Xc l nu. The variable n_X^2 is a combination of the invariant mass of the charmed meson m_X, its energy in the B-meson rest-frame E_X, and a constant \tilde{\Lambda} = …
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Linear Sigma Models in QCD and S3 Symmetry for Neutrinos
… experi- mental information about scalars from semileptonic decays of heavy charged mesons into an isosinglet scalar or pseudoscalar plus leptons.</p> <p>In part II we explore a predictive model based on permutation symmetry S3 for the masses and mixing matrix of three Majorana neutrinos. At …
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Measurement of the CKM Matrix Element |Vub| with B -> rho e ny Decays at BABAR
The branching fraction for B -> rho e nu decays and the CKM matrix element |Vub| is measured with semileptonic exclusive B-meson decays using approximately 55 million Upsilon(4S) -> BBbar decays collected during the years 2000 and 2001 with the BABAR detector. The result is Br(B0 -> rho- …
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Measurement of the CP Violating Asymmetry a^s_sl using Bs0->(Ds->phi pi) mu nu
<p>The time-integrated measurement of the semileptonic CP violating asymmetry, as<sub>sl</sub>, with data acquired at the Large Hadron Collider with the LHCb experiment is presented. This measurement can help physicists understand some peculiarities in the Standard Model, which is the fundamental …