Dr. Thiago Sogo Bezerra - "Neutrino Oscillations: From detector construction to parameter measurement and beyond"

par Dr Thiago Sogo Bezerra (Subatech Laboratory)

vendredi 3 févr. 2017, 10:45 → 12:30 Europe/Paris

Salle Mondrian (IPHC, Bât. 25)

Neutrino oscillation was the best hypothesis to solve the Solar Neutrino Problem (2002) and Atmospheric Neutrino Anomaly (1998). Since then, the theory has been corroborated by numerous and diverse experiment types, leading to the Nobel Prize in Physics of 2015 to T.Kajita and A.McDonald "for the discovery of neutrino oscillations, which shows that neutrinos have mass". Although successful, there are still open questions related to the neutrino oscillation theory. The Double Chooz (DC) experiment, uses neutrinos from the nuclear reactors, located in the French Chooz village, to measure the neutrino mixing angle θ13. The DC collaboration reported an indication non-zero value of this parameter, back in 2011, followed by the Daya Bay and RENO results in 2012. A finite value of θ13 opens a great opportunity window to measure a possible CP violation due to neutrino flavor mixing, one of the open questions of the neutrino oscillation theory. In this seminar, after a brief introduction to neutrino oscillations, I will present my contributions on the field, on the oscillation parameters measurement with reactor neutrinos and the Double Chooz detectors, going through all the steps: detector construction, event selection and background rejection, and oscillation fit. Finally a summary and short discussion on the current efforts to solve the remaining open questions will be presented.

Slides 20170203Starsbourg_thiago.pdf