673 citations · 3.1k across the 56 of their papers we have counts for
29 papers · 1 filter
Testing -attractor P-model of inflation by Cosmic Microwave Background radiation
Michał Marciniak, Marek Olechowski, Stefan Pokorski
In a recently proposed approach to testing models of inflation by Cosmic Microwave Background (CMB) radiation the reheating temperature is directly expressed in terms of the CMB ob…
CMB observables and reheat temperature as a window to models of inflation and freeze-in dark matter production
Anish Ghoshal, Paweł Kozów, Marek Olechowski +1
A systematic approach is presented for using CMB observables and reheating temperature for discriminating between various models of inflation and certain freeze-in dark matter scen…
Theoretical constraints on models with vector-like fermions
Amit Adhikary, Marek Olechowski, Janusz Rosiek +1
We provide a set of theoretical constraints on models in which the Standard Model field content is extended by vector-like fermions and in some cases also by a real scalar singlet.…
Early universe dynamics of PQ field with very small self-coupling and its implications for axion dark matter
P. Kozów, M. Olechowski
Axion-like particles (ALPs) are often considered as good candidates for dark matter. Several mechanisms generating relic abundance of ALP dark matter have been proposed. They may i…
A new way of calculating the effective potential for a light radion
J. M. Lizana, M. Olechowski, S. Pokorski
We address again the old problem of calculating the radion effective potential in Randall-Sundrum scenarios, with the Goldberger-Wise stabilization mechanism. Various prescriptions…
Effects of quantum statistics on relic density of Dark Radiation
Marek Olechowski, Paweł Szczerbiak
The freeze-out of massless particles is investigated. The effects due to quantum statistics, Fermi-Dirac or Bose-Einstein, of all particles relevant for the process are analyzed. S…
Spin-dependent constraints on blind spots for thermal singlino-higgsino dark matter with(out) light singlets
Marcin Badziak, Marek Olechowski, Paweł Szczerbiak
The LUX experiment has recently set very strong constraints on spin-independent interactions of WIMP with nuclei. These null results can be accommodated in NMSSM provided that the…
Is well-tempered neutralino in MSSM still alive after 2016 LUX results?
Marcin Badziak, Marek Olechowski, Paweł Szczerbiak
It is pointed out that a bino-dominated well-tempered bino-higgsino in the Minimal Supersymmetric Standard Model (MSSM) with heavy non-SM- like scalars can satisfy the 2016 LUX con…
Interpreting 750 GeV Diphoton Excess in Plain NMSSM
Marcin Badziak, Marek Olechowski, Stefan Pokorski +1
NMSSM has enough ingredients to explain the diphoton excess at 750 GeV: singlet-like (pseudo) scalar () and higgsinos as heavy vector-like fermions. We consider the producti…
Blind spots for neutralinos in NMSSM with light singlet scalar
M. Badziak, M. Olechowski, P. Szczerbiak
A substantial contribution to the SM-like Higgs mass may come from the mixing with the lightest singlet-dominated scalar in NMSSM for moderate or large values of [1]. The L…
Blind spots for neutralino dark matter in the NMSSM
Marcin Badziak, Marek Olechowski, Paweł Szczerbiak
Spin-independent cross-section for neutralino dark matter scattering off nuclei is investigated in the NMSSM. Several classes of blind spots for direct detection of singlino-Higgsi…
Detecting underabundant neutralinos
Marcin Badziak, Antonio Delgado, Marek Olechowski +2
The electroweak sector may play a crucial role in discovering supersymmetry. We systematically investigate the patterns of the MSSM-like electroweakinos, when the neutralino relic…
Upper bounds on sparticle masses from muon g-2 and the Higgs mass and the complementarity of future colliders
Marcin Badziak, Zygmunt Lalak, Marek Lewicki +2
Supersymmetric (SUSY) explanation of the discrepancy between the measurement of and its SM prediction puts strong upper bounds on the chargino and smuon masses. At the sa…
Experimental signatures of a light singlet-like scalar in NMSSM
Marcin Badziak, Marek Olechowski, Stefan Pokorski
NMSSM with a light singlet-like scalar and strongly suppressed couplings to and is investigated. It is shown that in such a scenario the singlet-like scalar to diphoton sig…
125 GeV Higgs and enhanced diphoton signal of a light singlet-like scalar in NMSSM
Marcin Badziak, Marek Olechowski, Stefan Pokorski
NMSSM with a light singlet-like scalar and strongly suppressed couplings to and is investigated. It is shown that in such a scenario the singlet-like scalar to diphoton sig…
Light staus and enhanced Higgs diphoton rate with non-universal gaugino masses and SO(10) Yukawa unification
Marcin Badziak, Marek Olechowski, Stefan Pokorski
It is shown that substantially enhanced Higgs to diphoton rate induced by light staus with large left-right mixing in MSSM requires at the GUT scale non-universal gaugino masses wi…
New Regions in the NMSSM with a 125 GeV Higgs
Marcin Badziak, Marek Olechowski, Stefan Pokorski
It is pointed out that mixing effects in the CP-even scalar sector of the NMSSM can give 6-8 GeV correction to the SM-like Higgs mass in moderate or large regions with a sm…
Inverted sfermion mass hierarchy and the Higgs boson mass in the MSSM
Marcin Badziak, Emilian Dudas, Marek Olechowski +1
It is shown that MSSM with first two generations of squarks and sleptons much heavier than the third one naturally predicts the maximal stop mixing as a consequence of the RG evolu…
Yukawa unification in SO(10) with light sparticle spectrum
Marcin Badziak, Marek Olechowski, Stefan Pokorski
We investigate supersymmetric SO(10) GUT model with μ<0. The requirements of top-bottom-tau Yukawa unification, correct radiative electroweak symmetry breaking and agreement with t…
Supersymmetric mass spectra for gravitino dark matter with a high reheating temperature
Laura Covi, Marek Olechowski, Stefan Pokorski +2
Supersymmetric theories with gravitino dark matter generally do not allow the high reheating temperature required by thermal leptogenesis without running afoul of relic abundance o…
Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking
Marek Olechowski, Stefan Pokorski, Krzysztof Turzynski +1
For supersymmetric theories with gravitino dark matter, the maximal reheating temperature consistent with big bang nucleosynthesis bounds arises when the physical gaugino masses ar…
Haggling over the fine-tuning price
P. H. Chankowski, J. Ellis, M. Olechowski +1
We amplify previous discussions of the fine-tuning price to be paid by supersymmetric models in the light of LEP data, especially the lower bound on the Higgs boson mass, studying…
Relic Abundance of Neutralinos in Heterotic String Theory: Weak Coupling vs. Strong Coupling
Y. Kawamura, H. P. Nilles, M. Olechowski +1
The relic abundance of stable neutralinos is investigated in heterotic string theory when supersymmetry is spontaneously broken by hidden-sector gaugino condensat…
Unification of Gauge and Yukawa Couplings without Symmetry
Jisuke Kubo, Myriam Mondragon, Marek Olechowski +1
A natural gradual extension of the idea of Grand Unification is to attempt to relate the gauge and Yukawa couplings; Gauge-Yukawa Unification (GYU). However, within the framework o…