Tord Johansson

Measurements and Simulations of Single-Event Upsets in a 28-nm FPGA

Single-event upsets in the configuration memory of the 28-nm Xilinx Kintex-7 FPGA, used in the PANDA electromagnetic calorimeter, have been studied. Results from neutron and proton irradiations at ...

Recent results on CP and CPT tests at KLOE

The neutral kaon system offers a unique possibility to perform fundamental tests of fundamental symmetry suchCP andCPT invariance. In this contribution two KLOE measurements are shown: the upper limit on the branching fraction for KS → 3π and theCPT symmetry test in the Standard Model Extension framework in association with Lorentz Invariance breaking. Preliminary results are reported for both measurements: BR(KS → 3π) < 2.9× 10−8@90%C.L.,∆aX = (−6.3± 6.0)× 10−18 GeV,∆aY = (2.8± 5.9)× 10−18 GeV,∆aZ = (2.4± 9.7)× 10−18 GeV. The results on SME parameters (∆aμ) are based on half of the total KLOE statistics. In this contribution a novel method for this analysis will be also discussed. A brief description of the future plans for the KLOE-2 project will be given.

Leading Modes of 3pi0 production in proton-proton collisions at incident proton momentum of 3.35 GeV/c

Leading Modes of 3pi0xa0production in proton-proton collisions at incident proton momentum of 3.35 GeV/c

Hadron Physics with KLOE and KLOE-2 Experiments

The KLOE experiment has collected 2.5u2009fb−1 at the peak of the φ resonance at the e+e− collider DAΦNE in Frascati and KLOE-2 is expected to start data taking at the upgraded DAΦNE φ-factory late 2010, with the aim to collect 25u2009fb−1 at the φ peak and it is under discussion the collection of 5u2009fb−1 between 1 and 2.5 GeV. KLOE data have been used to investigate the properties of the light scalar mesons f0(980), a0(980) and light pseudoscalar mesons η, η′, using φ radiative decays. Gamma-gamma interactions allow to investigate also the f0(600)/σ meson, observing the reaction e+e− into e+e−π0π0; a direct search of the f0(600)/σ into π0π0 decay is performed with data taken at a center of mass of 1 GeV, where φ decays are suppressed. We present ongoing analysis and final results already published with the full KLOE statistics and the scientific program of KLOE-2 collaboration on hadron physics.The KLOE Collaboration completed the full data taking on March 2006, acquiring 2.5 fb ^ -1 at the peak of the phi and other 240 pb ^ -1 off-peak. A new Collaboration is working on a new project, called KLOE-2, to refine and extend the KLOE physics program. We present here some preliminary and published results from the KLOE Collaboration on the pseudoscalar eta meson and the study of gamma gamma processes, that are among the main points of the KLOE-2 physics program.