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47 research outcomes, page 1 of 5
  • publication . Preprint . Article . 2018
    Open Access English
    Authors:
    Nicolás Bernal; Maíra Dutra; Yann Mambrini; Keith A. Olive; Marco Peloso; Mathias Pierre;
    Persistent Identifiers
    Project: EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    We generalize models invoking a spin-2 particle as a mediator between the dark sector and the Standard Model. We show that a massive spin-2 messenger can efficiently play the role of a portal between the two sectors. The dark matter is then produced via a freeze-in mech...

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    A. Abada; Damir Becirevic; Olcyr Sumensari; C. Weiland; R. Zukanovich Funchal;
    Persistent Identifiers
    Publisher: HAL CCSD
    Project: EC | InvisiblesPlus (690575), EC | NUMASS (617143), EC | ELUSIVES (674896)

    We discuss weak kaon decays in a scenario in which the Standard Model is extended by massive sterile fermions. After revisiting the analytical expressions for leptonic and semileptonic decays we derive the expressions for decay rates with two neutrinos in the final stat...

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  • publication . Preprint . 2018
    Open Access English
    Authors:
    Falkowski, Adam; Petraki, Kalliopi;
    Publisher: HAL CCSD
    Project: EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    The unexpectedly strong 21cm absorption signal detected by the EDGES experiment suggests that the baryonic gas was colder at redshift $z\sim 17$ than predicted in the standard scenario. We discuss a mechanism to lower the baryon temperature after recombination. We intro...

  • publication . Article . Preprint . Other literature type . 2017
    Open Access English
    Authors:
    Aprile, E.; Aalbers, J.; Agostini, F.; Alfonsi, M.; Althueser, L.; Amaro, F. D.; Anthony, M.; Arneodo, F.; Barrow, P.; Baudis, L.; ...
    Project: EC | ELUSIVES (674896), EC | INVISIBLES (289442)

    We present results of searches for vector and pseudo-scalar bosonic super-WIMPs, which are dark matter candidates with masses at the keV-scale, with the XENON100 experiment. XENON100 is a dual-phase xenon time projection chamber operated at the Laboratori Nazionali del ...

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Mathieu Boudaud; Julien Lavalle; Pierre Salati;
    Persistent Identifiers
    Publisher: HAL CCSD
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), ANR | OCEVU (ANR-11-LABX-0060), EC | NEWDARK (278234)

    MeV dark matter (DM) particles annihilating or decaying to electron-positron pairs cannot, in principle, be observed via local cosmic-ray (CR) measurements because of the shielding solar magnetic field. In this letter, we take advantage of spacecraft Voyager 1's capacit...

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  • publication . Article . Preprint . 2018
    Open Access
    Authors:
    Emilian Dudas; Tony Gherghetta; Kunio Kaneta; Yann Mambrini; Keith A. Olive;
    Persistent Identifiers
    Publisher: American Physical Society (APS)
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Comment: 27 pages, 4 figures

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Asmaa Abada; V. De Romeri; Jean Orloff; Ana M. Teixeira;
    Persistent Identifiers
    Publisher: HAL CCSD
    Project: EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    Comment: 24 pages, 6 figures, 2 tables; minor changes and analysis for the ISS added; v2 matches with the manuscript published in EPJC

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  • publication . Article . Preprint . 2018
    Open Access English
    Authors:
    Asmaa Abada; Valentina De Romeri; Michele Lucente; Ana M. Teixeira; Takashi Toma;
    Persistent Identifiers
    Publisher: HAL CCSD
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), EC | MadbaM (750627)

    Comment: 51 pages, 21 figures, 4 appendices. v2 includes few new figures and references, it matches with version published in JHEP. v3 contains updated and corrected bounds

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Bečirević, Damir; Sumensari, Olcyr;
    Publisher: HAL CCSD
    Project: EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    We show that a modification of the model with a low energy scalar leptoquark state carrying hypercharge $Y=7/6$ allows to accommodate both $R_K<1$ and $R_{K^\ast}<1$, through loop effects, consistent with recent observations made at LHCb. We describe details of the mode...

  • publication . Article . Report . Research . Preprint . 2017
    Open Access English
    Authors:
    Asmaa Abada; Giorgio Arcadi; Valerie Domcke; Michele Lucente;
    Publisher: HAL CCSD
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), ANR | USPC (ANR-11-IDEX-0005), ANR | UnivEarthS (ANR-10-LABX-0023)

    Journal of cosmology and astroparticle physics 2017(12), 024 (2017). doi:10.1088/1475-7516/2017/12/024

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47 research outcomes, page 1 of 5