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New Hot Paper Comments

By Gianluigi Fogli, Eligio Lisi, Antonio Marrone, Daniele Montanino, Antonio Palazzo

ESI Special Topics, November 2003
Citing URL - http://www.esi-topics.com/nhp/2003/november-03-physics.html

Gianluigi Fogli, Eligio Lisi, Antonio Marrone, Daniele Montanino, Antonio Palazzo answer a few questions about this month's new hot paper in the field of Physics.


From •>>November 2003

Field: Physics
Article Title: "Getting the most from the statistical analysis of solar neutrino oscillations - art. no. 053010"
Authors: Fogli, GL;Lisi, E;Marrone, A;Montanino, D;Palazzo, A
Journal: PHYS REV D
Volume: 6605
Page: 3010-3010
Year: SEP 1 2002
* Univ Bari, Dipartmento Fis, Via Amendola 173, I-70126 Bari, Italy.
* Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
* Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
* Univ Lecce, Dipartimento Sci Mat, I-73100 Lecce, Italy.
* Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy.

ST:  Why do you think your paper is highly cited?

Our paper analyzes in detail one of the most important phenomena established by several particle physics experiments in recent years, namely, solar neutrino flavor oscillations. Since solar neutrino experiments are extremely difficult, it is very important to extract from their precious data all the information which can be relevant for particle physicists and solarTop to bottom: Gianluigi Fogli, Eligio Lisi, Antonio Marrone, Daniele Montanino, Antonio Palazzo. modelists. We have tried to "squeeze" such pieces of information in the most effective and reliable way we could—hence our title "Getting the most from ..."—in order to provide a sort of reference work in the field, and apparently we succeeded. We would like to emphasize, however, that our work is part of a collective effort made by literally thousands of theorists and experimentalists during several decades of neutrino oscillation searches.

ST:  Does it describe a new discovery or a new methodology that's useful to others?

Yes. Our paper describes a systematic method for comparing theoretical predictions and experimental data related to solar neutrino oscillations, and applies it to get accurate information and up-to-date results about neutrino properties. Several researchers in the field have then adopted either the method, or the results, or both.

ST:  Could you summarize the significance of your paper in layman's terms?

Neutrinos, the lightest building blocks of matter, can belong to three different species (or "flavors'', as we say in jargon): electron, muon, and tau neutrinos. Transitions from one flavor to another are strictly forbidden, if neutrinos are massless. Experiments, however, have recently found compelling evidence that neutrinos, originally produced in the Sun's core with electron flavor, arrive at the Earth as a quantum superposition of all different flavors (electron, muon, and tau): therefore, neutrinos must have mass. In particular, the differences of squared masses of neutrinos, and their so-called "mixing angles," completely determine the properties of such quantum superpositions, i.e., the oscillations from one flavor to another. In this general context, our work aimed at reaching highly accurate and reliable estimates of the solar neutrino mass-mixing parameters. In order to do so, we used all the available and up-to-date experimental data, performed precise calculations of the neutrino oscillation phenomenon, evaluated all possible sources of uncertainties, and applied advanced statistical techniques in comparing theoretical predictions with experimental data. The results can be used as a state-of-the-art framework to evaluate further improvements in the determination of the solar neutrino mass-mixing parameters.

ST:  How did you become involved in this research?

Since 1993, we have been carrying out an extensive research program, aiming at a comprehensive theoretical interpretation of neutrino oscillation properties, as derived from all the available experimental results (not only from solar neutrino observations, but also from other astrophysical and terrestrial measurements). This paper was, for us, an important step forward in the developement of such a systematic program.End

Gianluigi Fogli
Full Professor of Theoretical Physics
Department of Physics and INFN
Bari, Italy

Eligio Lisi, Ph.D. 
Senior Researcher in Physics
Istituto Nazionale di Fisica Nucleare (INFN) 
Bari, Italy

Antonio Marrone, Ph.D.
Research grant recipient
Department of Physics and INFN
Bari, Italy

Daniele Montanino, Ph.D.
Researcher in Physics
Department of Materials Science and INFN
Lecce, Italy

Antonio Palazzo, Ph.D.
Research grant recipient
Department of Physics and INFN
Bari, Italy

ESI Special Topics, November 2003
Citing URL - http://www.esi-topics.com/nhp/2003/november-03-physics.html

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