Local efficiency corrections to higher order cumulants

Higher–Order Corrections to Instantons

The energy levels of the double-well potential receive, beyond perturbation theory, contributions which are non-analytic in the coupling strength; these are related to instanton effects. For example, the separation between the energies of oddand even-parity states is given at leading order by the one-instanton contribution. However to determine the energies more accurately multi-instanton confi...

Pion interferometry with higher-order cumulants

We have measured secondand third-order cumulants in UA1 data (p̄p collisions at 630 GeV/c). Rather than quoting numerical values for source parameters, we have used these in three checks to test the “quantum statistics” theory for consistency over these cumulants. In the process, we have found a method for folding theoretical correlation functions with experimental one-particle distributions. Ou...

Higher-order Qcd Corrections to Γ

In the study of scattering phenomena in the limit of very large energies at fixed momentum transfer, one must face the fact that the two most promising probes of BFKL physics, namely smallx effects in DIS and large-rapidity-gap events in dijet production at hadron colliders, are inherently dependent upon long-distance physics, due to the presence of hadrons in the initial state; this poses seri...

Higher-order Corrections to Higgs-boson Decays *

One of the great puzzles of elementary particle physics today is whether nature makes use of the Higgs mechanism of spontaneous symmetry breaking to generate the observed particle masses. The Higgs boson, H , is the missing link sought to verify this concept in the Standard Model. Many of the properties of the Higgs boson are fixed, e.g., its couplings to the gauge bosons, gV VH = 2 G 1/2 F M 2...

Higher Order Corrections to H± Production