Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Buchmuller, W."'
Publikováno v:
JCAP11(2014)006
We consider D-term inflation for small couplings of the inflaton to matter fields. Standard hybrid inflation then ends at a critical value of the inflaton field that exceeds the Planck mass. During the subsequent waterfall transition the inflaton con
Externí odkaz:
http://arxiv.org/abs/1406.6300
We point out that in the large field regime, the recently proposed superconformal D-term inflation model coincides with the Starobinsky model. In this regime, the inflaton field dominates over the Planck mass in the gravitational kinetic term in the
Externí odkaz:
http://arxiv.org/abs/1306.3471
A recently proposed class of supersymmetric models predicts rather light and nearly mass-degenerate higgsinos, while the other superparticles are significantly heavier. In this paper we study the early LHC phenomenology of a benchmark model of this k
Externí odkaz:
http://arxiv.org/abs/1111.6005
Publikováno v:
JHEP 1109:119,2011
We study supersymmetric extensions of the Standard Model with small R-parity and lepton number violating couplings which are naturally consistent with primordial nucleosynthesis, thermal leptogenesis and gravitino dark matter. We consider supergravit
Externí odkaz:
http://arxiv.org/abs/1107.0926
Publikováno v:
Nucl.Phys. B851 (2011) 481-532
The origin of the hot phase of the early universe remains so far an unsolved puzzle. A viable option is entropy production through the decays of heavy Majorana neutrinos whose lifetimes determine the initial temperature. We show that baryogenesis and
Externí odkaz:
http://arxiv.org/abs/1104.2750
Publikováno v:
Annals Phys.326:1998-2038,2011
Thermal leptogenesis explains the observed matter-antimatter asymmetry of the universe in terms of neutrino masses, consistent with neutrino oscillation experiments. We present a full quantum mechanical calculation of the generated lepton asymmetry b
Externí odkaz:
http://arxiv.org/abs/1012.5821
Publikováno v:
Phys.Lett.B693:421-425,2010
We study tachyonic preheating associated with the spontaneous breaking of B-L, the difference of baryon and lepton number. Reheating occurs through the decays of heavy Majorana neutrinos which are produced during preheating and in decays of the Higgs
Externí odkaz:
http://arxiv.org/abs/1008.2355
Publikováno v:
Phys.Rev.Lett.104:121102,2010
Thermal leptogenesis explains the observed matter-antimatter asymmetry of the universe in terms of neutrino masses, consistent with neutrino oscillation experiments. We present a full quantum mechanical calculation of the generated lepton asymmetry b
Externí odkaz:
http://arxiv.org/abs/1001.3856
Publikováno v:
Phys.Lett.B643:124-126,2006
We investigate how late-time entropy production weakens the Big-Bang Nucleosynthesis (BBN) constraints on the gravitino as lightest superparticle with a charged slepton as next-to-lightest superparticle. We find that with a moderate amount of entropy
Externí odkaz:
http://arxiv.org/abs/hep-ph/0605164
Publikováno v:
Ann.Rev.Nucl.Part.Sci.55:311-355,2005
We explore in some detail the hypothesis that the generation of a primordial lepton-antilepton asymmetry (Leptogenesis) early on in the history of the Universe is the root cause for the origin of matter. After explaining the theoretical conditions fo
Externí odkaz:
http://arxiv.org/abs/hep-ph/0502169