Konstantin Zioutas

Photon Production From The Scattering of Axions Out of a Solenoidal Magnetic Field (2009)

Guendelman, Eduardo I., Shilon, Idan, Cantatore, Giovanni, Zioutas, Konstantin

In this paper we calculate the total cross section for the production of photons from the scattering of axions by a strong inhomogeneous magnetic field in the form of a 2D delta function, a...

Searching for decaying axion-like dark matter from clusters of galaxies (2007)

Riemer-Sorensen, Signe, Zioutas, Konstantin, Hansen, Steen H., Pedersen, Kristian, Dahle, Haakon, Liolios, Anastasios

We consider the possibility of constraining the lifetime of radiatively decaying dark matter particles in clusters of galaxies inspired from generic axions of the Kaluza-Klein type. Such axions have...

Search for solar axions: the CAST experiment at CERN (2005)

Beltran, B, Andriamonje, Samuel A, Arsov, V, Aune, S, Autiero, D, Avignone, F T, ...

Hypothetical axion-like particles with a two-photon interaction would be produced in the sun by the Primakoff process. In a laboratory magnetic field they would be transformed into X-rays with...

First results from the CERN Axion Solar Telescope (CAST) (2004)

Andriamonje, Samuel A, Arsov, V, Aune, S, Autiero, D, Barth, K, Belov, A, ...

Hypothetical axion-like particles with a two-photon interaction would be produced in the Sun by the Primakoff process. In a laboratory magnetic field (``axion helioscope'') they would be transformed...

Solar X-rays as Signature for New Particles (2004)

Zioutas, Konstantin

Massive axions of the Kaluza-Klein type, created inside the solar core, can be gravitationally trapped by the Sun itself in orbits inside/outside the Sun, where they accumulate over cosmic times....

Quiet Sun X-rays as Signature for New Particles (2004)

Zioutas, Konstantin, Dennerl, K, Di Lella, L, Hoffmann, Dieter H H, Jacoby, J, Papaevangelou, T

We have studied published data from the Yohkoh solar X-ray mission, with the purpose of searching for signals from radiative decays of new, as yet undiscovered massive neutral particles. This search...

Commissioning and First Operation of the Cryogenics for the CERN Axion Solar Telescope (CAST) (2004)

Barth, K, Delikaris, D, Passardi, Giorgio, Pezzetti, M, Pirotte, O, Stewart, L, ...

A new experiment, the CERN Axion Solar Telescope (CAST) was installed and commissioned in 2002. Its aim is to experimentally prove the existence of an as yet hypothetical particle predicted by theory...

Axion searches at CERN with the CAST Telescope (2003)

Eleftheriadis, C, Andriamonje, Samuel A, Arik, E, Autiero, D, Avignone, F T, Barth, K, ...

The CERN Axion Solar Telescope (CAST) searches for axions coming from photon to axion conversion in the sun's core, as stated by the Primakoff effect. Axions arise in particle physics as a...

Cryogenics for the CERN Solar Axion Telescope (CAST) using a LHC Dipole Prototype Magnet (2002)

Barth, K, Passardi, Giorgio, Pezzetti, M, Pirotte, O, Riege, H, Vullierme, B, ...

The axion, an as yet hypothetical particle predicted from the solution of the strong CP problem, constitutes a prime candidate for the galactic dark matter and also arises in supersymmetry and...

Observational evidence for gravitationally trapped massive axion(-like) particles (2002)

Di Lella, L, Zioutas, Konstantin

Several unexpected astrophysical observations can be explained by gravitationally captured massive axions or axion-like particles, which are produced inside the Sun or other stars and are accumulated...

Search for solar Kaluza-Klein axions in theories of low-scale quantum gravity (2000)

Di Lella, L, Pilaftsis, Apostolos, Raffelt, G G, Zioutas, Konstantin

We explore the physics potential of a terrestrial detector for observing axionic Kaluza-Klein excitations coming from the Sun within the context of higher-dimensional theories of low-scale quantum...

Search for eV (pseudo)scalar penetrating particles in the SPS neutrino beam (2000)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

We carried out a model-independent search for light scalar or pseudoscalar particles $a$'s (an example of which is the axion) that couple to two photons by using a photon-regeneration method at high...

Experimental Verification of Neutron Phenomenology in Lead and Transmutation by Adiabatic Resonance Crossing in Accelerator Driven Systems (1999)

Abánades, A, Aleixandre, J, Andriamonje, Samuel A, Angelopoulos, Angelos, Apostolakis, Alcibiades J, Arnould, H, ...

Energy and space distributions of spallation neutrons (from 2.5 and 3.57 GeV/c CERN proton beams) slowing down in a 3.3 x 3.3 x 3 m3 lead volume and neutron capture rates on long-lived fission...

Limits on Exotic Heavily Ionizing Particles from the Geological Abundance of Fullerenes (1999)

Collar, J I, Zioutas, Konstantin

The C_{60} molecule exhibits a remarkable stability and inertness that leads to its survival in ancient carbonaceous rocks initially subject to the high temperatures requisite for its formation....

Search for energetic cosmic axions utilizing terrestrial/celestial magnetic fields (1998)

Zioutas, Konstantin, Thompson, D J, Paschos, E A

Orbiting $\gamma$-detectors combined with the magnetic field of the Earth or the Sun can work parasitically as cosmic axion telescopes. The relatively short field lengths allow the axion-to-photon...

A Decommissioned LHC Model Magnet as an Axion Telescope (1998)

Zioutas, Konstantin, Aalseth, C E, Abriola, D, Avignone, F T, Brodzinski, R L, Collar, J I, ...

The 8.4 Tesla, 10 m long transverse magnetic field of a twin aperture LHC bending magnet can be utilized as a macroscopic coherent solar axion-to-photon converter. Numerical calculations show that...

Experimental Search for Solar Axions via Coherent Primakoff Conversion in a Germanium Spectrometer (1997)

Avignone, F T, Abriola, D, Brodzinski, R, Collar, J I, Creswick, R J, Di Gregorio, D E, ...

Results are reported of an experimental search for the unique, rapidly varying temporal pattern of solar axions coherently converting into photons via the Primakoff effect in a single crystal...

Theory for the Direct Detection of Solar Axions by Coherent Primakoff Conversion in Germanium Detectors (1997)

Creswick, R J, Avignone, F T, Collar, J I, Farach, H A, Gattone, A O, Nussinov, S, ...

It is assumed that axions exist and are created in the Sun by Primakoff conversion of photons in the Coulomb fields of nuclei. Detection rates are calculated in germanium detectors due to the...

A proposal to use CPLEAR as antigravitometer (1995)

Zioutas, Konstantin

The reconstructed kinematics of the isotropically emitted $K^0\overline{K}^0$ and their decay vertex following a $p\overline{p}$ annihilation at rest allows to select events with specific neutral...

The g-Factor of the 2+ state of 180W and quadrupole moment ratios observed for 180W and 180Hf by the Mössbauer technique / (1973)

Zioutas, Konstantin.

Aus: Zeitschrift für Physik. 262 (1973), zus. mit B. Wolbeck u. B. Perscheid. - Ursprüngl. eingereicht u. d. T.: Hyperfeinstrukturuntersuchungen an den Kernen 130,180W und 170,180Hf mit Hilfe des...

Hyperfeinstrukturuntersuchungen an den Kernen 180,182W und 178,180Hf mit Hilfe des Mössbauer-Effekts. (1973)

Zioutas, Konstantin.

Kurzfassung in: Z. Physik. Bd. 262 (1973), S. 413-424 u. d. T.: Zioutas, K., B. Wolbeck and B. Perscheid: The g-Factor of the 2+State of 180W and Quadrupole Moment Ratios Observed for 180W and 180Hf...