Now showing items 11-27 of 27

    • Induced gravity and gauge interactions revisited 

      Broda, Bogusław; Szanecki, Michał (North-Holland, 2009)
      It has been shown that the primary, old-fashioned idea of Sakharov's induced gravity and gauge interactions, in the “one-loop dominance” version, works astonishingly well yielding phenomenologically reasonable results. As ...
    • “Isochronic” dynamical systems and nullification of amplitudes 

      Domienik, Joanna; Kosiński, Piotr (North-Holland, 2003)
      We construct the set of theories which share the property that the tree-level threshold amplitudes nullify even if both initial and final states contain the same type of particles. The origin of this phenomenon lies in ...
    • Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass 

      Abramowicz, H.; Abt, I.; Adamczyk, L.; Ciborowski, J.; Perlanski, W. (Springer Science+Business Media on behalf of the Scuola Internazionale Superiore di Studi Avanzati, 2014)
      The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q^2 < 1000 GeV^2 using an integrated luminosity of 354 pb^{−1}. The ...
    • Modalities for an Allegorical Conceptual Data Model 

      Zielińsk, Bartosz; Maślanka, Paweł; Sobieski, Ścibor (MDPI AG, 2014)
      Allegories are enriched categories generalizing a category of sets and binary relations. In this paper, we extend a new, recently-introduced conceptual data model based on allegories by adding support for modal operators ...
    • Modification of thin films induced by slow heavy ions analysed with PIXE and SRIM 

      Antoszewska-Moneta, Malgorzata; Brzozowski, Romuald; Moneta, Marek (Springer, 2015-03-17)
      In the present work the particle induced X-rays (PIXE) emitted during interaction of inert and active slow heavy (HI) ions with specially prepared thin films were measured. Kinematics of the interaction was simulated ...
    • On the triviality of higher-derivative theories 

      Andrzejewski, Krzysztof; Gonera, Joanna; Machalski, Piotr; Bolonek-Lasoń, Katarzyna (North-Holland, 2012)
      The higher-derivative theories with degenerate frequencies exhibit BRST symmetry [V.O. Rivelles, Phys. Lett. B 577 (2003) 147]. In the present Letter meaning of BRST-invariance condition is analyzed. The BRST symmetry is ...
    • Perturbative quantum damping of cosmological expansion 

      Broda, Bogusław (North-Holland, 2014)
      Perturbative quantum gravity in the framework of the Schwinger–Keldysh formalism is applied to compute lowest-order corrections to expansion of the Universe described in terms of the spatially flat Friedman–Lemaître–Robe ...
    • Photoproduction of isolated photons, inclusively and with a jet, at HERA 

      Abramowicz, H.; Abt, I.; Adamczyk, L.; Ciborowski, J.; Perlański, W. (Elsevier B.V., 2014)
      The photoproduction of isolated photons, both inclusive and together with a jet, has been measured with the ZEUS detector at HERA using an integrated luminosity of 374 pb^{−1}. Differential cross sections are presented in ...
    • Quantum gravity stability of isotropy in homogeneous cosmology 

      Broda, Bogusław (North-Holland, 2011)
      It has been shown that anisotropy of homogeneous spacetime described by the general Kasner metric can be damped by quantum fluctuations coming from perturbative quantum gravity in one-loop approximation. Also, a formal ...
    • Scaling violation and the inelasticity of very high energy proton–proton interactions 

      Wibig, Tadeusz (North-Holland, 2011)
      The pseudorapidity measurements at LHC, although in the central region only, allows us to perform preliminary tests of the multiparticle production extrapolation formula inspired by the analysis of recent cosmic ray data. ...
    • Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory 

      Aab, A.; Abreu, P.; Aglietta, M.; Giller, Maria; Śmiałkowski, Andrzej; Szadkowski, Zbigniew; Winchen, T. (Springer Berlin Heidelberg, 2014)
      Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E≥6×10^19 eV by ...
    • Semientwining Structures and Their Applications 

      Nichita, Florin F.; Parashar, Deepak; Zieliński, Bartosz (Hindawi Publishing Corporation, 2012-10-31)
      Semientwining structures are proposed as concepts simpler than entwining structures, yet they are shown to have interesting applications in constructing intertwining operators and braided algebras, lifting functors, ...
    • The X/gamma-ray correlation in NGC 4945 and the nature of its gamma-ray source 

      Wojaczyński, Rafał; Niedźwiecki, Andrzej (IOP Publishing for the American Astronomical Society, 2017)
      We report hints for the correlation between the X-ray and gamma-ray emission in the nearby galaxy NGC 4945, which harbors both an active galactic nucleus and a nuclear starburst region. We have divided the Fermi/LAT ...
    • Thermal induced structural and magnetic transformations in Fe_{73.5−x}Ce_{x=0,3,5,7}Si_{13.5}B_9Nb_3Cu_1 amorphous alloy 

      Antoszewska, Małgorzata; Wasiak, Michał; Gwizdałła, Tomasz; Sovak, Pavol; Moneta, Marek (Springer Netherlands, 2013)
      Structural and magnetic properties of amorphous and partly crystallized Fe_{73.5−x}Ce_{x=0,3,5,7}Si_{13.5}B_9Nb_3Cu_1 alloys, were analysed in the temperature ranging from RT to 800 °C with scanning calorimetry and ...
    • Ultrahigh Energy Neutrinos at the Pierre Auger Observatory 

      Abreu, P.; Ahlers, M.; Aglietta, M.; Ahn, E. J.; Albuquerque, I. F. M.; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Almela, A.; Alvarez Castillo, J.; Alvarez-Muñiz, J.; Alves Batista, R.; Ambrosio, M.,; Aminaei, A.,; Anchordoqui, L.,; Andringa, S.,; Anticić, T.; Aramo, C.; Arganda, E.,; Arqueros, F.; Asorey, H.; Assis, P.; Aublin, J.; Ave, M.; Avenier, M.; Avila, G.; Bäcker, T.; Badescu, A. M.; Balzer, M.; Barber, K. B.; Barbosa, A. F.; Bardenet, R.; Barroso, S. L. C.; Baughman, B.; Bäuml, J.; Beatty, J. J.; Becker, B. R.; Becker, K. H.; Bellétoile, A.; Bellido, J. A.; BenZvi, S.; Berat, C.; Bertou, X.; Biermann, P. L.; Billoir, P.; Blanco, F.; Blanco, M.; Bleve, C.; Blümer, H.; Boháčová, M.; Boncioli, D.; Bonifazi, C.; Bonino, R.; Borodai, N.; Brack, J.; Brancus, I.; Brogueira, P.; Brown, W. C.; Bruijn, R.; Buchholz, P.; Bueno, A.; Burton, R. E.; Giller, M.; Śmiałkowski, A.; Szadkowski, Z. (Hindawi Publishing Corporation, 2012-06-25)
      The observation of ultrahigh energy neutrinos (UHE𝜈�s) has become a priority in experimental astroparticle physics. UHE𝜈�s can be detected with a variety of techniques. In particular, neutrinos can interact in the ...
    • Weak n-Ary Relational Products in Allegories 

      Zieliński, Bartosz; Maślanka, Paweł (MDPI AG, 2014)
      Allegories are enriched categories generalizing a category of sets and binary relations. Accordingly, relational products in an allegory can be viewed as a generalization of Cartesian products. There are several definitions ...
    • β decay of 6He into the α+d continuum 

      Pfutzner, M.; Dominik, W.; Janas, Z.; Mazzocchi, C.; Pomorski, M.; Bezbakh, A. A.; Borge, M. J. G.; Chrapkiewicz, K.; Chudoba, V.; Frederickx, R.; Kaminski, G.; Kowalska, M.; Krupko, S.; Kuich, M.; Kurcewicz, J.; Lis, A. A.; Lund, M. V.; Miernik, K.; Perkowski, J.; Raabe, R.; Randisi, G.; Riisager, K.; Sambi, S.; Tengblad, O.; Wenander, F. (American Physical Society, 2015)
      The rare β-decay channel of 6He into the α+d continuum was investigated at the REX-ISOLDE facility. Bunches of postaccelerated 6He ions were implanted into the optical time projection chamber (OTPC), where the decays with ...