Luciano Maiani
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Luciano Maiani (born 16 July 1941) is a Sammarinese physicist. He is best known for his prediction of the
charm quark The charm quark, charmed quark, or c quark is an elementary particle found in composite subatomic particles called hadrons such as the J/psi meson and the charmed baryons created in particle accelerator collisions. Several bosons, including th ...
with Sheldon Glashow and
John Iliopoulos John (Jean) Iliopoulos (Greek language, Greek: Ιωάννης Ηλιόπουλος; 1940) is a Greeks, Greek physicist. He is the first person to present the Standard Model of particle physics in a single report. He is best known for his predictio ...
(the "
GIM mechanism In particle physics, the Glashow–Iliopoulos–Maiani (GIM) mechanism is the mechanism through which Flavor-changing neutral current, flavour-changing neutral currents (FCNCs) are suppressed in One-loop_Feynman_diagram, loop diagrams. It also expl ...
").


Academic history

In 1964 Luciano Maiani received his degree in physics and he became a research associate at the Istituto Superiore di Sanità in Italy. During that same year he collaborated with Raoul Gatto's
theoretical physics Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict List of natural phenomena, natural phenomena. This is in contrast to experimental p ...
group at the
University of Florence The University of Florence ( Italian: ''Università degli Studi di Firenze'') (in acronym UNIFI) is an Italian public research university located in Florence, Italy. It comprises 12 schools and has around 50,000 students enrolled. History The f ...
. He crossed the Atlantic in 1969 to do a post-doctoral fellowship at Harvard University's Lyman Laboratory of Physics. In 1976 Maiani became a professor of theoretical physics at the University of Rome, however he traveled widely during this period, holding visiting professorships at the
École normale supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...
of Paris (1977) and
CERN The European Organization for Nuclear Research, known as CERN (; ; ), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, western suburb of Gene ...
(1979–1980 and 1985–1986). Maiani also took an interest in the direction of particle physics research start on CERN's Scientific Policy Committee from 1984 to 1991. Then, in 1993, he became president of Italy's Istituto Nazionale di Fisica Nucleare (INFN). From 1993 to 1996 Maiani served as a scientific delegate in CERN council and then as that council's president in 1997. Thereafter he became director general of CERN, serving from 1 January 1999 through the end of 2003. From 1995 to 1997 Maiani chaired the Italian Comitato Tecnico Scientifico, Fondo Ricerca Applicata. At the end of 2007 he was proposed as president of
Consiglio Nazionale delle Ricerche The National Research Council (Italian: ''Consiglio Nazionale delle Ricerche, CNR'') is the largest research council in Italy. As a public organisation, its remit is to support scientific and technological research. Its headquarters are in Rome. ...
, but his nomination was suspended temporally after he signed a letter criticizing the rector of 'La Sapienza' University in Rome, who invited
Pope Benedict XVI Pope BenedictXVI (born Joseph Alois Ratzinger; 16 April 1927 – 31 December 2022) was head of the Catholic Church and sovereign of the Vatican City State from 19 April 2005 until his resignation on 28 February 2013. Benedict's election as p ...
to give a ''lectio magistralis'' in 2008. However he became the President of CNR since 2008. As of September 2020, he is a member of the Italian Aspen Institute.


Research

Luciano Maiani has authored over 100 scientific publications on the theory of elementary particles often with several co-authors. In 1970 he predicted the
charm quark The charm quark, charmed quark, or c quark is an elementary particle found in composite subatomic particles called hadrons such as the J/psi meson and the charmed baryons created in particle accelerator collisions. Several bosons, including th ...
in a paper with Glashow and Iliopoulos which was later discovered at SLAC and Brookhaven in 1974 and led to a
Nobel Prize in Physics The Nobel Prize in Physics () is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics. It is one of the five Nobel Prizes established by the ...
for the discoverers. Working with Guido Altarelli in 1974 they explained that the observed octet enhancement in weak non-leptonic decays was due to a leading gluon exchange effect in
quantum chromodynamics In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Quarks are fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of ...
. They later extended this effect to describe the weak non-leptonic decays of charm and
bottom quark The bottom quark, beauty quark, or b quark, is an elementary particle of the third generation. It is a heavy quark with a charge of −  ''e''. All quarks are described in a similar way by electroweak interaction and quantum chromodynamic ...
s as well and also produced a parton model description of heavy flavor weak decays. In 1976 Maiani analyzed the CP violation in the six-quark theory and predicted the very small electric dipole moment of the neutron. In the 1980s he started using the numerical simulation of lattice QCD and this led to the first prediction of the decay constant of pseudoscalar charmed mesons and of
B meson In particle physics, B mesons are mesons composed of a bottom antiquark and either an up (), down (), strange () or charm quark (). The combination of a bottom antiquark and a top quark is not thought to be possible because of the top quark' ...
s. A proponent of
supersymmetry Supersymmetry is a Theory, theoretical framework in physics that suggests the existence of a symmetry between Particle physics, particles with integer Spin (physics), spin (''bosons'') and particles with half-integer spin (''fermions''). It propo ...
, Maiani once said that the search for it was "primary goal of modern particle physics". He has not confined his interest to the theoretical side of physics either, with involvement in ALPI, EUROBALL, DAFNE,
VIRGO Virgo may refer to: Arts and entertainment * Virgo (film), a 1970 Egyptian film * Virgo (character), several Marvel Comics characters * Virgo Asmita, a character in the manga ''Saint Seiya: The Lost Canvas'' * ''Virgo'' (album), by Virgo Four, ...
and the LHC.


Honors and awards

*1979
Matteucci Medal The Matteucci Medal is an Italian award for physicists, named after Carlo Matteucci from Forlì. It was established to award physicists for their fundamental contributions. Under an Italian Royal Decree dated July 10, 1870, the Italian Society ...
, Accademia Nazionale dei XL *1987
Sakurai Prize The J. J. Sakurai Prize for Theoretical Particle Physics, also commonly referred to as just the Sakurai Prize, is a prize awarded by the American Physical Society. It is presented annually at the Society's April meeting and honors "outstanding a ...
of the
American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of ...
*1996 Doctor honoris causa, Université de la Méditerranée, Aix-Marseille *2007 Dirac Medal, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy *2010 Doctor honoris causa, Benemérita Universidad Autónoma de Puebla, Puebla, México *2013 Bruno Pontecorvo Prize by the Joint Institute for Nuclear Research,
Dubna Dubna ( rus, Дубна́, p=dʊbˈna) is a town in Moscow Oblast, Russia. It has a status of '' naukograd'' (i.e. town of science), being home to the Joint Institute for Nuclear Research, an international nuclear physics research center and o ...
, Russia


See also

*
GIM mechanism In particle physics, the Glashow–Iliopoulos–Maiani (GIM) mechanism is the mechanism through which Flavor-changing neutral current, flavour-changing neutral currents (FCNCs) are suppressed in One-loop_Feynman_diagram, loop diagrams. It also expl ...


External links


Scientific publications of Luciano Maiani
on
INSPIRE-HEP INSPIRE-HEP is an open access digital library for the field of high energy physics (HEP). It is the successor of the Stanford Physics Information Retrieval System (SPIRES) database, the main literature database for high energy physics since the 1 ...


References

{{DEFAULTSORT:Maiani, Luciano 1941 births People associated with CERN Living people Sammarinese physicists Particle physicists Experimental physicists Experimental particle physics Academic staff of the Sapienza University of Rome Foreign fellows of Pakistan Academy of Sciences Theoretical physicists Members of the European Academy of Sciences and Arts Foreign members of the Russian Academy of Sciences J. J. Sakurai Prize for Theoretical Particle Physics recipients Recipients of the Matteucci Medal National Research Council (Italy) people Fellows of the American Physical Society