Journal of Cosmology and Astroparticle Physics (IOPP/SISSA)

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2017-02-06
12:07
Supersymmetric SO(10)-inspired leptogenesis and a new N2-dominated scenario / Di Bari, Pasquale ; Re Fiorentin, Michele
We study the supersymmetric extension of SO(10)-inspired thermal leptogenesis showing the constraints on neutrino parameters and on the reheat temperature TRH that derive from the condition of successful leptogenesis from next-to-lightest right handed (RH) neutrinos (N2) decays and the more stringent ones when independence of the initial conditions (strong thermal leptogenesis) is superimposed. [...]
Published in JCAP 1603 (2016) 039 10.1088/1475-7516/2016/03/039 arXiv:1512.06739
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2017-01-30
19:05
Experimental search for hidden photon CDM in the eV mass range with a dish antenna / Suzuki, J. ; Horie, T. ; Inoue, Y. ; Minowa, M.
A search for hidden photon cold dark matter (HP CDM) using a new technique with a dish antenna is reported [...]
Published in JCAP 1509 (2015) 042 10.1088/1475-7516/2015/09/042 arXiv:1504.00118
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2017-01-30
19:04
Constrained inflaton due to a complex scalar / Budhi, Romy H. S. ; Kashiwase, Shoichi ; Suematsu, Daijiro
We reexamine inflation due to a constrained inflaton in the model of a complex scalar [...]
Published in JCAP 1509 (2015) 039 10.1088/1475-7516/2015/09/039 arXiv:1505.05955
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2017-01-30
19:04
PPPC 4 DM secondary: a Poor Particle Physicist Cookbook for secondary radiation from Dark Matter / Buch, Jatan ; Cirelli, Marco ; Giesen, Gaëlle ; Taoso, Marco
We enlarge the set of recipes and ingredients at disposal of any poor particle physicist eager to cook up signatures from weak-scale Dark Matter models by computing two secondary emissions due to DM particles annihilating or decaying in the galactic halo, namely the radio signals from synchrotron emission and the gamma rays from bremsstrahlung [...]
Published in JCAP 1509 (2015) 037 10.1088/1475-7516/2015/09/037 arXiv:1505.01049
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2017-01-30
19:04
The eejj excess signal at the LHC and constraints on leptogenesis / Dhuria, Mansi ; Hati, Chandan ; Rangarajan, Raghavan ; Sarkar, Utpal
We review the non-supersymmetric (Extended) Left-Right Symmetric Models (LRSM) and low energy E6-based models to investigate if they can explain both the recently detected excess eejj signal at CMS and leptogenesis. [...]
Published in JCAP 1509 (2015) 035 10.1088/1475-7516/2015/09/035 arXiv:1502.01695
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2017-01-30
19:04
Accidental Kähler moduli inflation / Maharana, Anshuman ; Rummel, Markus ; Sumitomo, Yoske
We study a model of accidental inflation in type IIB string theory where inflation occurs near the inflection point of a small Kähler modulus [...]
Published in JCAP 1509 (2015) 040 10.1088/1475-7516/2015/09/040 arXiv:1504.07202
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2017-01-30
19:03
A note on trans-Planckian tail effects / Graef, L.L. ; Brandenberger, R.
We study the proposal by Mersini et al. [...]
Published in JCAP 1509 (2015) 032 10.1088/1475-7516/2015/09/032 arXiv:1505.02374
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2017-01-30
19:03
Constraining inflationary dark matter in the luminogenesis model / Hung, Pham Q. ; Ludwick, Kevin J.
Using renormalization-group flow and cosmological constraints on inflation models, we exploit a unique connection between cosmological inflation and the dynamical mass of dark matter particles in the luminogenesis model, a unification model with the gauge group SU(3)C × SU(6) × U(1)Y, which breaks to the Standard Model with an extra gauge group for dark matter when the inflaton rolls into the true vacuum. [...]
Published in JCAP 1509 (2015) 031 10.1088/1475-7516/2015/09/031 arXiv:1411.1731
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2017-01-30
19:00
Constraints on axion inflation from the weak gravity conjecture / Rudelius, Tom
We derive constraints facing models of axion inflation based on decay constant alignment from a string-theoretic and quantum gravitational perspective. [...]
Published in JCAP 1509 (2015) 020 10.1088/1475-7516/2015/09/020 arXiv:1503.00795
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2016-12-22
18:03
Dissipative axial inflation / Notari, Alessio ; Tywoniuk, Konrad
We analyze in detail the background cosmological evolution of a scalar field coupled to a massless abelian gauge field through an axial term ϕ/fγ F ̃F, such as in the case of an axion. [...]
Published in JCAP 1612 (2016) 038 10.1088/1475-7516/2016/12/038 arXiv:1608.06223
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