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A Quark-Gluon Plasma is the state of matter that existed a millionth of a second after the Big Bang. The temperatures were about a million times hotter than that of our sun. At these extremely hot temperatures, atoms and nuclei melt into a soup of quarks and gluons. We can study this state in modern accelerators by colliding heavy nuclei, such as gold or lead, at ultrarelativistic energies. One way to study this plasma is by studying its effect on particles made of a heavy quark-antiquark pair. The heaviest of these are states made of b and anti-b quarks, sometimes called "beauty" quarks. In this talk, we will summarize measurements taken over the past 15 years, we have studied these particles as they experience the hot environment of the Quark-Gluon Plasma, where we have found that these particles essentially melt when they are placed in this extreme environment.
Manuel Calderón de la Barca Sánchez is from Mexico City. He went to high-school and college in at the Tec de Monterrey, majoring in Engineering Physics. He spent a summer doing research at CERN through a fellowship from the Mexican Physical Society. Thanks to this he continued on to graduate
school to pursue his Ph.D, joining the relativistic heavy-ion group at Yale University, where he completed his PhD in 2001 in the field of high-energy nuclear physics. His work was done at the Relativistic Heavy-ion
Collider at Brookhaven National Laboratory, where he was first a postdoc and then a staff scientist. His desire to teach led him to look for University positions, and he was hired as Assistant Professor at Indiana University in 2004, and then at UC Davis in 2006, where he is now full professor. He is the featured scientist and narrator of the IMAX film, âSecrets of the Universeâ, which explores how scientists study the quark soup that existed a millionth of a second after the Big Bang.
He is an enthusiastic educator, receiving the UC Davis Distinguished Teaching Award for Undergraduate Teaching in 2013. He is committed to increasing diversity in STEM: as a member of the UC Davis Strength Through Equity and Diversity (STEAD) Committee, he received the âSoaring to New Heightsâ Faculty Citation Award for Diversity and Principles of Community, highlighting outstanding efforts to increase diversity. He is a member of the Nuclear Science Advisory Committee. He continues to do research at Brookhaven Lab, and at CERN in the Large Hadron Collider focusing on b-quark bound states and Z bosons. He has continued to open opportunities for Latinos and women to be involved in the STEM fields in general, and in Physics in particular.