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11 papers · 1 filter
Abelian covers and isotrivial canonical fibrations
Francesco Zucconi
We classify all the surfaces of general type whose canonical map is composed with a pencil if they are the quotient of the diagonal action by an Abelian group acting over the produ…
Bending strain-driven modification of surface reconstructions: Au(111)
U. Tartaglino, E. Tosatti, D. Passerone +1
Strain can affect the morphology of a crystal surface, and cause modifications of its reconstruction even when weak, as in the case of mechanical bending. We carried out calculatio…
Measurement of the anti-B ---> D* pi lepton anti-neutrino(lepton) Branching Fraction
The DELPHI Collaboration, P. Abreu
A study of b semileptonic decays into D, D pi+- and D* pi+- final states is presented. The D0, D+ and D*+ mesons are exclusively reconstructed in Z decay data recorded from 1992 to…
Local Search Techniques for Constrained Portfolio Selection Problems
Andrea Schaerf
We consider the problem of selecting a portfolio of assets that provides the investor a suitable balance of expected return and risk. With respect to the seminal mean-variance mode…
Search for a fermiophobic Higgs at LEP 2
The DELPHI Collaboration, P. Abreu
Higgs bosons predicted by the fermiophobic scenario within Two Higgs Doublets Models were searched for in the data collected by the DELPHI detector at centre-of-mass energies betwe…
Search for supersymmetric partners of top and bottom quarks at sqrt(s) = 189 GeV
The DELPHI Collaboration, P. Abreu
Searches for supersymmetric partners of top and bottom quarks are presented using data taken by the DELPHI experiment at LEP in 1997 and 1998. No deviations from standard model exp…