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49 papers · 2 filters
Model-Independent Analysis of B -> pi K Decays and Bounds on the Weak Phase gamma
Matthias Neubert
A general parametrization of the amplitudes for the rare two-body decays B -> pi K is introduced, which makes maximal use of theoretical constraints arising from flavour symmetries…
Instant Preheating
Gary Felder, Lev Kofman, Andrei Linde
We describe a new efficient mechanism of reheating. Immediately after rolling down the rapidly moving inflaton field produces particles , which may be either bosons or fermi…
A Generalised Area Law for Hadronic String Reinteractions
Johan Rathsman
A new model for hadronic string reinteractions based on a generalised area law is presented. The model describes both the hadronic final states in annihilation and the dif…
Neutrino Masses from Large Extra Dimensions
Nima Arkani-Hamed, Savas Dimopoulos, Gia Dvali +1
Recently it was proposed that the standard model (SM) degrees of freedom reside on a -dimensional wall or ``3-brane'' embedded in a higher-dimensional spacetime. Furthermore…
Illuminating dark matter and primordial black holes with interstellar antiprotons
James D. Wells, Alexander Moiseev, Jonathan F. Ormes
Interstellar antiproton fluxes can arise from dark matter annihilating or decaying into quarks or gluons that subsequently fragment into antiprotons. Evaporation of primordial blac…
(S)neutrino properties in R-parity violating supersymmetry: I. CP-conserving Phenomena
Yuval Grossman, Howard E. Haber
R-parity-violating supersymmetry (with a conserved baryon number B) provides a framework for particle physics with lepton number (L) violating interactions. We examine in detail th…