Probing quark-gluon plasma with beauty quarks
Author(s)Wang, Ta-Wei,Ph. D.Massachusetts Institute of Technology.
Massachusetts Institute of Technology. Department of Physics.
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This thesis presents the first ever attempts of direct measurements of B mesons in heavy ion collisions with the CMS experiment. The full decay chains of B mesons were reconstructed by identifying the corresponding decay vertices. Machine learning classification models were used extensively and an unprecedented signal to background ratio was reached. Both cross sections and nuclear modification factors which quantify the medium effect of the quark-gluon plasma were measured. This thesis will introduce the techniques that enabled these novel analyses and discuss the implications of the results.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2019Cataloged from PDF version of thesis.Includes bibliographical references (pages 203-222).
DepartmentMassachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology