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Editor-in-chief: Ken Peach, University of Oxford and Royal Holloway (University of London)

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  • high-scale flavours
    Research article   Open Access
    Hadron multiplicity in e+e- events induced by top quark pairs at the ILC energy
    Alexandre A.V. Kisselev and Vladimir V.A. Petrov
    PMC Physics A 2008, 2:3 (4 April 2008)
    The average charged hadron multiplicity in the e+e? events with the primary t¯t-pair at the collision energy 500 GeV, as well as the average multiplicity of charged hadrons from the top quark are calculated in QCD to be 86.7 ± 1.11 and 41.0 ± 0.54, respectively.
  • high-scale flavours
    PMC Physics A 2008, 2:2 (7 March 2008)
    Integration of superpartners out of the spectrum induces potentially large contributions to Yukawa couplings. Supersymmetric threshold corrections therefore influence the CKM matrix prediction in a non-trivial way. We study the effects of threshold corrections on high-scale flavor structures specified at the gauge coupling unification scale in supersymmetry.
  • supernova
    Research article   Open Access
    Supernova Ia observations in the Lemaître-Tolman model
    Krzysztof Bolejko
    PMC Physics A 2008, 2:1 (12 February 2008)
    This paper investigates whether models including realistic inhomogeneous matter distribution but without the cosmological constant can produce dimming of high-redshift supernovae consistent with acceleration of the Universe. It is found that, although the model mimics observations at small scales, the cosmological constant must be invoked to account for dimming over larger scales.

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