PKU HEP Seminar and Workshop (北京大学高能物理组)
北大高能系列: Multi-Boson Interactions at ATLAS (基于ATLAS实验的多玻色子物理研究及新物理寻找)
by
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Asia/Shanghai
B105 (CHEP)
B105
CHEP
West Building, School of Physics, PKU
Description
Abstract：
The multi-boson production measurements using ATLAS pp collisions at √s = 7/8/13 TeV offer a good opportunity to study the high energy behavior of electroweak interactions in the Standard Model (SM). The measurements not only verify the SM theory but also aim for new physics search by probing the triple/quartic gauge-boson vertices through the search for anomalous couplings. Besides, the SM multi-boson productions are the irreducible backgrounds of di-bosons produced by the decays of Higgs and other extra resonances induced by new physics beyond SM. This seminar presents selected major hotspots in ATLAS experiments all across Run-I to Run-II including both the SM multi-boson production cross section precision measurements as well as the new physics search in di-boson Z/W/H(-->hadron)+photon final states, which provide an independent investigation and cross-reference to resolve the 2016 750GeV gamma-gamma excess that expects similar topologies showing up in Z+photon final state.
Speaker's CV:
Prof. Shu Li is the 1st T.D. Lee Junior Fellow at the Tsung-Dao Lee Institute & Shanghai Jiao Tong University. He received his PhD in 2012 from University of Science and Technology of China and Centre de Physique des Particules de Marseille, France. His PhD thesis involves the 1st di-boson PRL publication in ATLAS on the observation of di-boson WW process, which greatly promoted the 2012 Higgs discovery through WW final states. From 2013.2 to 2017.8, he worked as a postdoctoral research associate at Duke University and continued his leading role in ATLAS multi-boson physics in general. He led and completed ATLAS Run-1 1st pure electroweak rare process measurement in Z+photon+jj final state and Run-2 1st heavy resonance search in full-hadron final states of Z+photon, which helped to resolve the 750GeV di-photon puzzle in 2016. Shu Li has been leading various important physics and performance groups, being the conveners of: MC validation group (2015.12~2017.1), SM Electroweak physics group (2017.4~2018.3), Generator Development and Tuning group (2018.4~Present), and has been promoted recently to co-lead the LHC-wide (ATLAS-CMS-LHCb) electroweak multi-boson working group at CERN starting from 2018.10 onwards.
