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109 papers · 1 filter
Creation of large spatial fluctuations in neutrino asymmetry by neutrino oscillations
Kari Enqvist, Kimmo Kainulainen, Antti Sorri
We consider active-sterile neutrino oscillations in the early universe in an inhomogeneous isocurvature background. We show that very small initial baryonic seed-inhomogeneities ca…
Renormalization of the weak hadronic current in the nuclear medium
T. Siiskonen, M. Hjorth-Jensen, J. Suhonen
The renormalization of the weak charge-changing hadronic current as a function of the reaction energy release is studied at the nucleonic level. We have calculated the average quen…
The s-sbar and K-Kbar nature of f_0(980) in D_s decays
A. Deandrea, R. Gatto, G. Nardulli +2
We examine the D_s -> f_0(980) pi amplitude through a constituent quark-meson model, incorporating heavy quark and chiral symmetries, finding a good agreement with the recent E791…
Aharonov-Bohm Effect in Noncommutative Spaces
M. Chaichian, A. Demichev, P. Presnajder +2
The Aharonov-Bohm effect on the noncommutative plane is considered. Developing the path integral formulation of quantum mechanics, we find the propagation amplitude for a particle…
Inhomogeneous Big Bang Nucleosynthesis and the High Baryon Density Suggested by Boomerang and MAXIMA
Hannu Kurki-Suonio, Elina Sihvola
The recent Boomerang and MAXIMA data on the cosmic microwave background suggest a large value for the baryonic matter density of the universe, omega_b = 0.03. This density is large…
Antimatter and Matter Production in Heavy Ion Collisions at CERN (The NEWMASS Experiment NA52)
G. Ambrosini, R. Arsenescu, C. Baglin +20
Besides the dedicated search for strangelets NA52 measures light (anti)particle and (anti)nuclei production over a wide range of rapidity. Compared to previous runs the statistics…