Unit

Particle Accelerator Physics Laboratory

Laboratory

Related publications (370)

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SEWDarkM

A number of observed phenomena in high energy physics and cosmology lack their resolution within the Standard Model of particle physics. These puzzles include neutrino oscillations, baryon asymmetry of the Universe, existence of Dark Matter and inflation. ...

2009

The role of sterile neutrinos in cosmology and astrophysics

Alexey Boyarsky, Oleg Ruchayskiy

We present a comprehensive overview of an extension of the Standard Model that contains three right-handed (sterile) neutrinos with masses below the electroweak scale [the Neutrino Minimal Standard Model (vMSM)]. We consider the history of the Universe fro ...

Annual Reviews2009

Radiation protection studies for CERN Linac4/SPL accelerator complex

Egidio Mauro

CERN is presently designing a new chain of accelerators to replace the present Proton Synchrotron (PS) complex: a 160 MeV room-temperature H- linac (Linac4) to replace the present 50 MeV proton linac injector, a 3.5 GeV Superconducting Proton Linac (SPL) t ...

EPFL2009

Standard Model Higgs boson mass from inflation

Amaury Magnin

We analyse one-loop radiative corrections to the inflationary potential in the theory, where inflation is driven by the Standard Model Higgs field. We show that inflation is possible provided the Higgs mass mH lies in the interval mmin < mH < mmax, where m ...

2009

Search for lepton-flavor-violating τ decay into a lepton and an f0 (980) meson

Olivier Schneider, Aurelio Bay, Chao Wang, Tagir Aushev, Remi Léandre Albert Louvot, Xiao Wang, Jing Li

We search for lepton-flavor-violating τ decays into a lepton (electron or muon) and an f0 (980) meson using 671 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No events are observed and we set the following 90% ...

2009

Inflaton mass in the nu WSM inflation

Yannick Bartocci

We analyze the reheating in the modification of the nu MSM (Standard Model with three right handed neutrinos with masses below the electroweak scale) where one of the sterile neutrinos, which provides the Dark Matter, is generated in decays of the addition ...

2009

S-particles at their naturalness limits

Duccio Pappadopulo

We draw attention on a particular configuration of supersymmetric particle masses, motivated by naturalness and flavour considerations. All its relevant phenomenological properties for the LHC are described in terms of a few physical parameters, irrespecti ...

2009

Review of Particle Physics

Olivier Schneider, Pierre Vogel, Greig Alan Cowan, Jian Liu

This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2778 new measurements from 645 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summa ...

2008

Leptogenesis with an almost conserved lepton number

Steve Blanchet

Seesaw models with a slightly broken lepton number symmetry can explain small neutrino masses, and allow for low-scale leptogenesis. We make a thorough analysis of leptogenesis within the simplest model with two right-handed (RH) neutrinos (or with N_3 dec ...

2008

A study of beam-beam effects in hadron colliders with a large number of bunches

Tatiana Pieloni

A particle beam is a collection of a large number of charges and represents an electromagnetic potential for other charges, therefore exerting forces on itself (space charge) and other beams (Beam-Beam Interactions, BBIs). The control of the BBIs in partic ...

EPFL2008