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68 papers · 1 filter
Search for anomalous top quark couplings with the D0 detector
D0 Collaboration, V. Abazov
Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top…
Equivalence between supersymmetric self-dual and Maxwell-Chern-Simons models coupled to a matter spinor superfield
A. F. Ferrari, M. Gomes, A. C. Lehum +3
We study the duality of the supersymmetric self-dual and Maxwell-Chern-Simons theories coupled to a fermionic matter superfield, using a master action. This approach evades the dif…
Universality of algebraic laws in Hamiltonian systems
Roberto Venegeroles
Hamiltonian mixed systems with unbounded phase space are typically characterized by two asymptotic algebraic laws: decay of recurrence time statistics () and superdiffusion (…
Geodesic stability, Lyapunov exponents and quasinormal modes
Vitor Cardoso, Alex S. Miranda, Emanuele Berti +2
Geodesic motion determines important features of spacetimes. Null unstable geodesics are closely related to the appearance of compact objects to external observers and have been as…
Dissociation of the benzene molecule by UV and soft X-rays in circumstellar environment
H. M. Boechat-Roberty, R. Neves, S. Pilling +2
Benzene molecules, present in the proto-planetary nebula CRL 618, are ionized and dissociated by UV and X-ray photons originated from the hot central star and by its fast wind. Ion…
Barrierless procedure for substitutionally doping graphene sheets with boron atoms: ab initio calculations
Renato B. Pontes, A. Fazzio, Gustavo M. Dalpian
Using ab initio methods, we propose a simple and effective way to substitutionally dope graphene sheets with Boron. The method consists of selectively exposing each side of the gra…