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34 papers · 2 filters
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…
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…
Searching Scalar Resonances with Ultra-high Energy Neutrinos
Lars Brücher, Petteri Keränen, Jukka Maalampi
We study the prospects of detecting signals of a resonant scattering of high-energy cosmic neutrinos on electrons in the atmosphere. Such a process is possible through an s-channel…
Numerical simulations of fragmentation of the Affleck-Dine condensate
K. Enqvist, A. Jokinen, T. Multamaki +1
We present numerical simulations of fragmentation of the Affleck-Dine condensate in two spatial dimensions. We argue analytically that the final state should consist of both Q-ball…
How can one understand the lightest scalars, especially the sigma
N. A. Tornqvist, A. D. Polosa
We discuss how the a_0(980), f_0(980), K^*_0(1430) and particularly the broad sigma resonance can be understood within a coupled channel framework, which includes all light two-pse…
Transverse energy from minijets in ultrarelativistic nuclear collisions: a next-to-leading order analysis
K. J. Eskola, K. Tuominen
We compute in next-to-leading order (NLO) perturbative QCD the amount of transverse energy produced into a rapidity region of a nuclear collision from partons created in the f…