32 citations · 84 across the 17 of their papers we have counts for
17 papers
A Study Of Very Inclined Showers In The Pierre Auger Observatory
M. Ave
The Engineering Array of the Auger Observatory has been running successfully since 2001 and inclined showers have been recorded from the start. We have analysed the events with zen…
Calibration of the Pierre Auger fluorescence detector
M. D. Roberts
The absolute calibration of an air fluorescence detector (FD) is an important element in correctly determining the energy of detected cosmic rays. The absolute calibration relates…
Primordial bubbles of colour superconducting quark matter
Luis Masperi, Milva Orsaria
We analyze the possibility that bubbles of quark matter surviving the confinement phase transition might have become colour superconducting due to the enormous compression suffered…
New physics scales and anomalous magnetic moment
Helder Chavez, Luis Masperi
Violation of chiral symmetry together with change of mass sign allows a linear correction in inverse power of new physics scale to the anomalous magnetic moment of muon. In this li…
A possible origin of superconducting currents in cosmic strings
Helder Chavez, Luis Masperi
The scattering and capture of right-handed neutrinos by an Abelian cosmic string in the SO(10) grand unification model are considered. The scattering cross-section of neutrinos per…
Strangelets and their possible astrophysical origin
Luis Masperi
We discuss the first-order phase transition of QCD at high temperature in the universe and the possible formation of quark-matter lumps through cooling in regions of increased pres…
Superheavy particles either for UHECR of for muon anomaly
H. Chavez, L. Masperi, M. Orsaria
We show that, according to the scheme of spontaneous breakings starting from a GUT with symmetry E6, it is possible that either a superheavy particle without ordinary interactions…
Comparison of UHECR spectra from necklaces and vortons
Luis Masperi, Milva Orsaria
Cosmic rays of energy higher than 10^19 eV may be explained by topological defects produced in the early stages of universe. Two suitable alternatives are: necklaces formed by magn…
Hard component of ultra-high energy cosmic rays and vortons
Luis Masperi, Milva Orsaria
Observed events of ultra-high energy cosmic rays may indicate a hard component for the energy spectrum of their flux, which might have origin in the decay of long-lived vortons pre…
Baryogenesis through gradual collapse of vortons
Luis Masperi, Milva Orsaria
We evaluate the matter-antimatter asymmetry produced by emission of fermionic carriers from vortons which are assumed to be destabilized at the electroweak phase transition.The vel…
Effect of strong magnetic field on the first-order electroweak phase transition
R. Fiore, A. Tiesi, L. Masperi +1
The broken-symmetry electroweak vacuum is destabilized in the presence of a magnetic field stronger than a critical value. Such magnetic field may be generated in the phase transit…
Dynamical Cosmological Constant and Relations Among Pseudo Goldstone Bosons
Juan Estrada, Luis Masperi
The present apparent cosmological constant is interpreted as the potential of the lightest pseudo Goldstone boson. Some numerical relations among cosmological parameters and partic…
Cosmic Rays from Decaying Vortons
Luis Masperi, Guillermo Silva
The flux of high energy cosmic rays coming from the decay of vortons is estimated. If the abundance of loops corresponding to a superconductivity scale coincident with that of the…
Bargmann-Michel-Telegdi equation and one-particle relativistic approach
A. Della Selva, J. Magnin, L. Masperi
A reexamination of the semiclassical approach of the relativistic electron indicates a possible variation of its helicity for electric and magnetic static fields applied along its…
Strings With Axionic Content and Baryogenesis
Roberto Fiore, Luis Masperi, Ariel Megevand
We describe different electroweak strings with axionic content, including non-topological configurations calculated numerically, and show their possible influence on baryogenesis i…
Influence of Strings with Axionic Content on the Polarization of Extragalactic Sources
Luis Masperi, Sandra Savaglio
It is shown that the axion concentrated in electroweak strings which are consequently stabilized may produce a rotation of the polarization angle of radiation from extragalactic so…
Stability of Modified Electroweak Strings
Luis Masperi, Ariel Megevand
We discuss the stability of an electroweak string with axions in its core, which give to the configuration a quasi-topological property, and compare it with other modifications usi…