In particle physics, a hadron is a composite subatomic particle made of two or more quarks held together by the strong interaction. They are analogous to molecules that are held together by the electric force. Most of the mass of ordinary matter comes from two hadrons: the proton and the neutron, while most of the mass of the protons and neutrons is in turn due to the binding energy of their constituent quarks, due to the strong force.
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 a northwestern suburb of Geneva, on the France–Switzerland border. It comprises 23 member states. Israel, admitted in 2013, is the only non-European full member. CERN is an official United Nations General Assembly observer.
The omega baryons are a family of subatomic hadron particles that are represented by the symbol
Ω
and are either neutral or have a +2, +1 or −1 elementary charge. They are baryons containing no up or down quarks. Omega baryons containing top quarks are not expected to be observed. This is because the Standard Model predicts the mean lifetime of top quarks to be roughly 5×10−25 s, which is about a twentieth of the timescale for strong interactions, and therefore that they do not form hadrons.
The charm quark, charmed quark, or c quark is an elementary particle of the second generation. It is the third-most massive quark, with a mass of 1.27±0.02 GeV/c2 and a charge of +2/3e. It carries charm, a quantum number. Charm quarks are found in various hadrons, such as the J/psi meson and the charmed baryons. There are also several bosons, including the W and Z bosons and the Higgs boson, that can decay into charm quarks.
A pentaquark is a human-made subatomic particle, consisting of four quarks and one antiquark bound together; they are not known to occur naturally, or exist outside of experiments specifically carried out to create them.
The Large Hadron Collider (LHC) is the world's largest and highest-energy particle collider. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories, as well as more than 100 countries. It lies in a tunnel 27 kilometres (17 mi) in circumference and as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva.
A tetraquark, in particle physics, is an exotic meson composed of four valence quarks. A tetraquark state has long been suspected to be allowed by quantum chromodynamics, the modern theory of strong interactions. A tetraquark state is an example of an exotic hadron which lies outside the conventional quark model classification. A number of different types of tetraquark have been observed.
Bernard d'Espagnat was a French theoretical physicist, philosopher of science, and author, best known for his work on the nature of reality. Wigner-d'Espagnat inequality is partially named after him.
Mary Katharine Gaillard is an American theoretical physicist. Her focus is on particle physics. She is a professor of the graduate school at the University of California, Berkeley, a member of the Berkeley Center for Theoretical Physics, and visiting scientist at the Lawrence Berkeley National Laboratory. She was Berkeley's first tenured female physicist.
Adlène Hicheur is a particle physicist with dual Algerian and French citizenship. After his master of theoretical physics in Lyon, he joined LAPP to work on the BaBar experiment, located at the Stanford Linear Accelerator Center. His thesis, defended in 2003, was about the production of high energy Eta prime mesons in the decays of B mesons. After that he was a Postdoctorate in England at the Rutherford Appleton Laboratory, where he worked on the ATLAS experiment at LHC. He then joined the high energy physics department of École Polytechnique Fédérale de Lausanne (EPFL) and works currently on the LHCb experiment.
The Laboratoire d'Annecy de physique des particules, usually abbreviated as LAPP, is a French experimental physics laboratory located in Annecy in the Haute-Savoie department of France. It is associated with both the French particle and nuclear physics institute IN2P3, a subdivision of the CNRS research council, and the Université Savoie Mont Blanc.
Paolo Giubellino is an experimental particle physicist working on High-Energy Nuclear Collisions. Currently he is the joint Scientific Managing Director of the Facility for Antiproton and Ion Research (FAIR) and the GSI Helmholtz Centre for Heavy Ion Research (GSI) and Professor at the Institute of Nuclear Physics of the Technische Universität Darmstadt.
The Laboratoire de Physique des Solides is a research institute of the Paris-Saclay University, associated to the National Center of Scientific Research (CNRS) as a joint research unit. It is located in Orsay, France, about 25 km southwest of Paris.
The Jacques Herbrand Prize is an award given by the French Academy of Sciences to young researchers in the field of mathematics, physics, and their non-military applications. It was created in 1996, and first awarded in 1998. In 2001, it was renamed to Grand Prix Jacques Herbrand . Until 2002, the prize was given each year in both fields; since 2003, it is given alternatingly. It is endowed with 15000, later with 20000 euros, and named in honor of the French logician Jacques Herbrand (1908-1931).
Michel Davier is a French physicist.
Aleksandra M. Walczak is a theoretical biophysicist. She works on stochastic gene expression at Ecole Normale Supérieure where she is a research director.
Faïrouz Malek also known as Faïrouz Ohlsson-Malek is a French and Algerian physicist specializing in nuclear physics, particle physics and cosmology. A research scientist at the French National Centre for Scientific Research, she is involved in international research at the CERN LHC. She has contributed to the discovery of the Higgs boson. She is also known for her commitment to gender parity in science, as well as to the development of science in Africa. She is fellow of the African Academy of Sciences. She is the niece of Algerian composer Ahmed Malek.
Farida FassiFAAS is a Moroccan professor of physics at Mohammed V University in Rabat. She is the co-founder of the African Strategy for Fundamental Applied Physics and a member of African Academy of Sciences.
Vanina Ruhlmann-Kleider is a French physicist and director of research for the French National Centre for Scientific Research (CNRS), at CEA Paris-Saclay. Originally working in experimental particle physics, her interests shifted to observational cosmology through her participation in the Supernova Legacy Survey and Baryon Oscillation Spectroscopic Survey projects.
