نتایج جستجو برای: boson
تعداد نتایج: 15420 فیلتر نتایج به سال:
We search for the production of a heavy W' gauge boson that decays to third generation quarks in 0.9 fb-1 of pp collisions at square root(s)=1.96 TeV, collected with the D0 detector at the Fermilab Tevatron collider. We find no significant excess in the final-state invariant mass distribution and set upper limits on the production cross section times branching fraction. For a left-handed W' bos...
A boson representation of the quantum affine algebra Uq(ŝl 2) is realized based on the Wakimoto construction. We discuss relations with the other boson representations.
A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb−1 of proton–proton collisions data at √ s = 7 TeV and 20.3 fb−1 at √ s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called t...
We show that a top-prime quark as heavy as 600GeV can be discovered at the Tevatron, provided it is resonantly pair-produced via a vector color octet. If the top-prime originates from a vectorlike quark, then the production of a single top-prime in association with a top may also be observable, even through its decay into a Higgs boson and a top. A color octet with mass of about 1TeV, which dec...
In 1999 LEP reached a centre-of-mass energy of 202 GeV and delivered a total integrated luminosity in excess of 1 fb to the four experiments. A review of the results of all Higgs boson searches performed with the data collected in 1999 is presented, with a particular emphasis on the combinations of the four LEP experiments. When for a given search such a combination is not available, the indivi...
A precise determination of the W boson mass at the Fermilab Tevatron requires a theoretical calculation in which the effects of the initial-state multiple soft-gluon emission and the final-state photonic correction are simultaneously included. Here, we present such a calculation and discuss its prediction on the transverse mass distribution of the W boson and the transverse momentum distributio...
We consider the CFT of a free boson compactified on a circle, such that the compactification radius R2 is an irrational multiple of R2 selfdual. Apart from the standard Dirichlet and Neumann boundary states, Friedan suggested [1] that an additional 1-parameter family of boundary states exists. These states break U(1) symmetry of the theory, but still preserve conformal invariance. In this paper...
In the standard model, the top quark decay width Γt is computed from the exclusive t → bW decay. We argue in favor of using the three body decays t → bf i ¯ f j to compute Γt as a sum over these exclusive modes. As dictated by the S-matrix theory, these three body decays of the top quark involve only asymptotic states and incorporate the width of the W boson resonance in a natural way. The conv...
We show that the broad transverse momentum distribution of the Higgs boson produced by WW fusion can provide a viable way to identify H → bb̄ decays at the LHC, if particular kinematical configurations with large rapidity gaps are selected. We estimate the event rate of the signal and of the QCD bb̄ background. We also discuss Higgs boson detection via the H → ττ and H → WW ∗ decay modes.
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