Recent & Past Highlights

Dr. Zohreh Parsa
started the Neutrino /CP Studies at BNL in 1998. This page includes part of her collaborative work
Dr.WilliamMarciano Awarded J. J. Sakurai Prize for Theoretical Particle Physics (2002) Dr.Nicholas Samios Awarded Gian Carlo Wick Gold Meda l(2009). Dr.Raymond Davis Awarded 2002 Physics Nobel Prize for detecting Solar Neutrinos! Dr. Maurice Gold- haber Awarded National Medal of Science. Dr. Melvin Schwartz Awarded Nobel Prize for Discovery of the Muon-Neutrino (1988).

Neutrino Physics & Experiment

Neutrino physics has had an interesting history. In 1930 Pauli postulated the existence of the (electron) neutrino, in 1956 this was confirmed by Reines and Cowan using a nuclear reactor source of antineutrinos. In 1962, a second distinct (muon) neutrino was shown to exist in a BNL experiment. For that discovery Nobel Prize was awarded to Lederman, Schwartz and Steinberger. In 1995, the third, (tau) neutrino was detected at FNAL. In parallel, Ray Davis' studies of solar neutrinos confirmed understanding of stellar dynamics modulo a 2/3 flux deficit that later was recognized as a result of neutrino oscillations among the three flavors of neutrinos. properties of those oscillations were further unveiled with followup solar, atmospheric, reactor and accelerator neutrino studies . The discovery of oscillations, detection of 19 neutrino events from supernova 1987a by the old IMB and Kamiokande water cerenkov detectors confirmed the theory of supernova explosions. The WMAP experiment has started to see imprints of neutrino mass effects on the cosmic microwave background radiation left from the Big Bang.

Introduction

An intense neutrino facility allows probing of the neutrino mixing angles, mass hierarchy, and leptonic CP violation. Physics potential, for making precision measurements of all neutrino oscillation parameters. using a wide band nu_µ beam from BNL , to a VLB (very long baseline) 2540 km baseline (with 0.5 megaton) detector at Homestake Mine in South Dakota was our first study. Potentials of intense neutrino beams from BNL (FNAL) to Long Baseline Detectors at Homestake (SD), Henderson (Co) and Cascades (WA) were studied. Large Detectors located in a low background underground environment(s) would provide additional physics capabilities for proton decay and continuous observation of natural sources of neutrinos such as supernova. HOMESTAKE is the selected DUSEL Site, Detector R & D is underway,and our neutrino to VLB simulation(s) are illustrated. Left Tabs provide additional information on Long Baseline (LBNE), Reactor (DAYA BAY) and Solar Neutrino (Nu) Experiments etc.
* With "Firefox Browser" you can see this page with (rotating) plots of parameters variations, click |HERE|

Zohreh Parsa
parsa@bnl.gov
www.neutrino.bnl.gov

Top Figure shows variation of parameter(s) e.g L (Baseline) distance from neutrino source to a detector site. Lower Plot shows CP Phase Variations, in above Probability vs Energy plot(s).

Neutrino (alias Neutrinos) page, updated 1999 - June 2011, Dr. Z. Parsa, Physicist; Address: Physics Department 510A, Brookhaven National Lab, Upton, New York 11973-5000, USA
Past web assist appreciated.   Privacy and Security Notice Click
BNL, FNAL and 3 possible DUSEL Detector Sites, Homestake (SD), Henderson (CO), cascades(WA). DUSEL selected site is
the Homestake Mine in South Dakota, a distance of 2540 km
from BNL and close to 1300 km from FNAL.


Super Kamiokande, a Water Cerenkov Detector



Ribon Cutting with Dr. Al Mann at the


HOMESTAKE, Sanford Underground Laboratory



Drs. Z. Parsa, W. Marciano & R. Wilson in Henderson (a DUSEL possible) UNDERGROUND Lab site in Colorodo. click to top of Page