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Riccardo Barbieri

From Wikipedia, the free encyclopedia
Italian physicist (1944-)

Riccardo Barbieri
Born1944
NationalityItalian
Known forPhysics beyond the Standard Model,Supersymmetry,Quantum field theory
Scientific career
FieldsTheoretical physicist
InstitutionsScuola Normale Superiore di Pisa

Riccardo Barbieri (born 1944) is an Italian theoretical physicist and a professor at theScuola Normale Superiore di Pisa. He has written more than two hundred research papers in the field of theoretical elementary particle physics,[1] and has been particularly influential inphysics beyond the Standard Model.

Research career

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Riccardo Barbieri received his undergraduate education in 1963-67 at theScuola Normale Superiore in Pisa and at theUniversity of Pisa. Hislaurea advisor wasPietro Menotti. During his professionalization classes (perfezionamento) in 1967-69 at the Scuola Normale Superiore and in later years he worked on higher-order radiative corrections inQuantum Electrodynamics withEttore Remiddi. In the 1970s he turned to computations inQuantum Chromodynamics, collaborating in particular withRaoul Gatto andZoltan Kunszt. In 1976 atCERN, he made the prediction, later experimentally verified, of the hadronic widths of the threecharmonium P-waves.[2][3]

In 1980-82, Riccardo Barbieri was a staff member at theCERN Theory Division. TheStandard Model of particle physics by then well established, he started focussing on modelsbeyond the Standard Model, in particularsupersymmetry. In 1982, he formulated the first realistic model of mediation of supersymmetry breaking via supergravity.[4]

Since 1984 and until now, Riccardo Barbieri has been the professor of theoretical physics at Pisa, first at the University of Pisa (1984–97), and then at the Scuola Normale Superiore (1998–present). Some of his most influential results in this period include:

  • In 1988, the quantitative formulation of the naturalness concept in supersymmetric models.[5]
  • In 1990, the formulation of a reference parametrization of the quantum corrections to the electroweak precision observables.[6]
  • In 1995, pointing out the significance of flavour and CP violations in supersymmetric unified theories even in the absence of any flavour or CP violation in the input for the soft-supersymmetry breaking parameters.[7]
  • In 2006, the proposal of a Dark Matter model based on a second Higgs doublet without vacuum expectation value.[8]

Mentoring

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Having taught in Pisa for 30 years, Riccardo Barbieri is acclaimed for creating a numerous and flourishing school of theoretical high-energy physics. Among many of his students and postdocs who went on to become professors of theoretical physics in Italy and around the world, areGian F. Giudice, andMichelangelo Mangano (permanent staff members at the CERN), Giovanni Ridolfi (professor at Universita' di Genova),Riccardo Rattazzi (professor at theEPFL),Francesco Vissani (INFN director of research atLaboratori Nazionali del Gran Sasso),Alessandro Strumia (professor at the University of Pisa),Andrea Romanino (professor atSISSA),Roberto Contino (professor at theSapienza University of Rome),Paolo Creminelli (professor at theICTP),Michele Papucci (Divisional Fellow at theBerkeley National Laboratory),Gia Dvali (professor at theLMU Munich),Vyacheslav Rychkov (professor at theIHES),Stefania Gori (professor at UC Santa Cruz).

Famous quotes

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Elementary particle physics is the quadrant of nature whose laws can be written in a few lines with absolute precision and the greatest empirical adequacy.[9]

Awards and honours

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Prof. Barbieri was awarded the "Ordine del Cherubino" from the University of Pisa in 1997, the Humboldt Prize and, more recently, the Physics Prize of "Accademia Nazionale dei Lincei" in 2017. He was also a Miller Visiting Professor at the University of California, Berkeley.

Books

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References

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  1. ^"Inspire".
  2. ^Barbieri, R.; R. Gatto; R. Kögerler (1976)."Calculation of the annihilation rate of P wave quark-antiquark bound states"(PDF).Physics Letters B.60 (2):183–188.Bibcode:1976PhLB...60..183B.doi:10.1016/0370-2693(76)90419-6.ISSN 0370-2693.
  3. ^Barbieri, R.; R. Gatto; E. Remiddi (1976)."Singular binding dependence in the hadronic widths of 1++ and 1+− heavy quark antiquark bound states".Physics Letters B.61 (5):465–468.Bibcode:1976PhLB...61..465B.doi:10.1016/0370-2693(76)90729-2.ISSN 0370-2693.
  4. ^Riccardo Barbieri; Sergio Ferrara; Calos Savoy (1982)."Gauge Models with Spontaneously Broken Local Supersymmetry".Phys. Lett. B.119 (4–6):343–347.Bibcode:1982PhLB..119..343B.doi:10.1016/0370-2693(82)90685-2.
  5. ^Riccardo Barbieri; Gian F. Giudice (1988)."Upper Bounds on Supersymmetric Particle Masses".Nucl. Phys. B.306 (1):63–76.Bibcode:1988NuPhB.306...63B.doi:10.1016/0550-3213(88)90171-X.
  6. ^Riccardo Barbieri; Guido Altarelli (1991)."Vacuum polarization effects of new physics on electroweak processes".Phys. Lett. B.253 (1–2):161–167.Bibcode:1991PhLB..253..161A.doi:10.1016/0370-2693(91)91378-9.
  7. ^Riccardo Barbieri; Lawrence J. Hall; Alessandro Strumia (1995). "Violations of lepton flavor and CP in supersymmetric unified theories".Nucl. Phys. B.405 (2–3):219–251.arXiv:hep-ph/9501334.Bibcode:1995NuPhB.445..219B.doi:10.1016/0550-3213(95)00208-A.S2CID 14445005.
  8. ^Barbieri, Riccardo; Lawrence Hall; Vyacheslav Rychkov (2006)."Improved naturalness with a heavy Higgs boson: An alternative road to CERN LHC physics".Physical Review D.74 (1): 015007.arXiv:hep-ph/0603188.Bibcode:2006PhRvD..74a5007B.doi:10.1103/PhysRevD.74.015007.S2CID 15412955.
  9. ^abBarbieri, Riccardo (2007).Lectures on the electroweak interactions. Pisa, Italy: Edizione della Normale.ISBN 978-88-7642-311-6.

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