E. Pasqualucci — Page 2

arXiv2001

Preliminary trigger studies for the PEP-N detector

A very preliminary study for a trigger for the PEP-N experiment is presented. Its aim is to show the feasibility of a very efficient trigger for multihadronic events based on energy releases in the electromagnetic calorimeter. Though the efficiency of such a trigger is very high and simple topology requirements can be applied to reduce cosmic background, an accurate study of machine background is going to be made to provide final trigger design and performance.

hep-ex↗

arXiv2001

The Inverse Problem: Extracting Time-Like from Space-Like Data

A practical strategy is presented and successfully implemented to determine form factors in the time-like but unphysical (below threshold) region using dispersion relations, in a model independent way without any bias towards expected resonances. Space and time-like data have been employed along with a regularization scheme to unfold and solve the integral equations. Remarkably, resonance structures with peaks for the $ρ(770)$, $ρ'(1600)$ and a structure near the $N\bar N$ threshold are automatically generated. The $Φ$ peak is invisible thus refuting suggestions about any sizeable $s\bar s$ content in the nucleon.

hep-ph↗