Foto del docente

Andrea Castro

Associate Professor

Department of Physics and Astronomy "Augusto Righi"

Academic discipline: FIS/01 Experimental Physics

Research

Keywords: hadron colliders multijet events multijet hadron collider top quark high energy physics

My scientific activity has been realized essentially through the collaboration
to three different experiments in the field of High Energy Physics: two based
on e+e- colliders (DM2, SLD) and two at a proton-antiproton collider
environment (CDF) or proton-proton collider (CMS).

In the DM2 experiment (based in Orsay, France) I studied the hadron spectroscopy of the J/Psi decay products and the pion and kaon form factors.
For the SLD collaboration (based in Stanford, USA) I participated to the construction and commissioning of the external calorimeter, together with the development of software for testing, slow-control and data aquisition.

Starting from 1990 my research activity has concentrated, finally, on the study of events produced by proton-antiproton collisions at the Tevatron in Fermilab (Chicago, USA). Among all collisions a small fraction contains events containing pairs of top quarks, discovered at Fermilab in 1995. These events enable the measurement of fundamental properties of the top quark as its mass and production cross section. These parameters are in fact essential ingredients to the Standard Model of electroweak interactions.
Together with a few colleagues from Padova and Bologna Universities I performed, over the years, measurements of the top quark mass and production cross section in the fully-hadronic channel, with increasing precision. These measurements contributed in a significan way to the world average.

As for CMS, to whose collaboration I belong since 2007, my main activity refes to too quark physics, and in particular to measurements of mass and cross sections, supervising several students (both PhD and undergradute). Since 2012 I am charing the Publication Committee on top quark physics, which handles all CMS papers on top quark physics.