WIMP and SIMP Dark Matter from the Spontaneous Breaking of a Global Group

Seminars

by Nicolás Bernal (ICTP - SAIFR, São Paulo, Brazil)

Thursday, 18 June 2015 from to (Europe/Madrid)
at IFIC ( Seminar Room 1.1.1 )

ABSTRACT

We propose and study a scalar extension of the Standard Model which 
respects a ℤ3 symmetry remnant of the spontaneous breaking of a global 
U(1) symmetry. Consequently, this model has a natural dark matter 
candidate and a Goldstone boson in the physical spectrum. In addition, 
the Higgs boson properties are changed with respect to the Standard 
Model due to the mixing with a new particle. We explore regions in 
the parameter space taking into account bounds from the measured Higgs 
properties, dark matter direct detection as well as measurements of 
the effective number of neutrino species before recombination. The dark 
matter relic density is determined by three classes of processes: 
the usual self-annihilation, semi-annihilation and purely dark matter 
3→2 processes. The latter has been subject of recent interest leading 
to the so-called `Strongly Interacting Massive Particle' (SIMP) scenario. 
We show under which conditions our model can lead to a concrete 
realization of such scenario and study the possibility that the dark 
matter self-interactions could address the small scale structure problems. 
In particular, we find that in order for the SIMP scenario to work, 
the dark matter mass must be in the range 7−115 MeV, with the global 
symmetry energy breaking scale in the TeV range.

http://indico.ific.uv.es/indico/conferenceDisplay.py?confId=2483

Planck 2015 observations of CMB temperature and polarisation anisotropies: implications for cosmology

Past Seminars, Seminars
by Massimiliano Lattanzi (Università di Ferrara and INFN Ferrara)
Tuesday, 24 March 2015 from to (Europe/Madrid)
at Universe ( 1001-Primera-1-1-1 - Paterna. Seminario )

ABSTRACT

The Planck satellite has observed the millimetre and sub-millimetre 
sky, in both temperature and polarisation, continuously for 50 months 
between 2009 and 2013. A first release of cosmology products, based 
on data acquired during 15 months of observations, took place in early 
2013. In February 2015, the Planck collaboration released cosmology 
products based on data from the full 50 months of observations. In my 
talk, after a brief introduction describing the Planck satellite, 
its scientific payload and the 2015 data products, I will present 
results on the cosmological parameters based on the full mission 
temperature and polarization data. I will first discuss consistency 
of the data with the six-parameter inflationary LCDM cosmology, and 
then turn to extensions of the standard cosmological model, including 
implications for neutrino physics and inflationary models.

http://indico.ific.uv.es/indico/conferenceDisplay.py?confId=2450

Evidence for leptonic CP phase from NOVA, T2K and ICAL

Seminars

by Monojit Ghosh (Physical Research Laboratory, Ahmedabad (India))

Tuesday, 16 June 2015 from to (Europe/Madrid)
at IFIC ( Seminar Room 1.1.1 )

ABSTRACT

The phenomenon of neutrino oscillation is now well understood from the solar, 
atmospheric, reactor and accelerator neutrino experiments. This oscillation 
is characterized by a unitary PMNS matrix which is parametrized by three 
mixing angles and one phase known as the leptonic CP phase. Though there 
are already significant amount of information about the three mixing angles 
but the CP phase is still unknown. In my talk I will describe the synergy 
between the long-baseline (LBL) experiment NOVA, T2K and the atmospheric 
neutrino experiment ICAL@INO for obtaining the first hint of CP violation 
in the lepton sector.

http://indico.ific.uv.es/indico/conferenceDisplay.py?confId=2527

Magnetic field instability in a neutron star driven by the electroweak electron-nucleon interaction

Past Seminars, Seminars

by Victor Semikoz (IZMIRAN, Moscow, Russia)

Tuesday, 5 May 2015 from to (Europe/Madrid)
at IFIC ( Seminar Room 1.1.1 )

ABSTRACT

We study the instability of magnetic fields in a neutron star core 
driven by the parity violating part of the electron-nucleon interaction 
in the Standard Model. We suggest a possible explanation of the origin 
of the strongest magnetic fields observed in astrophysics.

http://indico.ific.uv.es/indico/conferenceDisplay.py?confId=2454

PhD position at AHEP Group, IFIC, Valencia

Becas, Doctorado, Old positions

The Astroparticle and High Energy Physics Group at the Instituto de Fisica Corpuscular (a Severo Ochoa Excellence Center) of the University of Valencia and CSIC announces a student grant to perform a PhD Thesis in Theoretical Particle Physics, under the Spanish PhD programme Formación de Personal Investigador (FPI). The call will be published soon by the Spanish Ministry of Economy and Competitiveness (MINECO) and most likely the appointment should start early 2016. The candidate should have experience equivalent to a Master Degree at the beginning of the appointment, although applicants finishing a degree in Physics in 2015 could also be considered. He/she should perform research towards a PhD Thesis in one of the group research lines,

  1. Neutrino properties: laboratory and astrophysics
  2. Neutrino masses, origin and implications
  3. New physics at the Large Hadron Collider after the Higgs boson
  4. Particle cosmology: neutrinos and dark matter

These four research lines are interconnected, and cover theoretical, phenomenological and observational aspects of Astroparticle and High Energy Physics. In addition to filling the web-form, please upload your curriculum vitae, certificate of undergraduate grades, Master degree certificate or equivalent. Also send at least one letter of recommendation to the address below, BEFORE JUNE 25 2015.

Contact: Dr. M. Tortola, mariam@ific.uv.es CC valle@ific.uv.es Tel +34963543518