物理学院 School of Physics, Nanjing University

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Fundamental Symmetries of the Early Universe and the Origin of Matter

2014年10月13日

报告人: Michael J. Ramsey-Musolf
Professor of Physics, University of Massachusetts/Amherst and Director, Amherst Center for Fundamental Interactions
时间:10月15日(周三)上午10:00
地点:唐仲英楼B501

内容简介: 
Explaining why the universe contains more matter than antimatter remains a open problem at the interface of particle and nuclear physics with cosmology. While the Standard Model of particle physics cannot provide an explanation, various candidates for physics beyond the Standard Model may do so by breaking fundamental symmetries. Among the most interesting and testable scenarios are those that would have generated the matter-antimatter asymmetry roughly 10 picoseconds after the Big Bang. I discuss recent theoretical ideas for such scenarios, developments in computing their dynamics, and prospects for testing their viability with measurements at the high energy and high intensity frontiers.

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Education:
Ph.D. in Physics, Princeton University, 1989 Advisor: Sam Treiman
[Former Ph.D. students of Sam Treiman include Steven Weinberg, Stephen Adler,
Curtis Callan, Robert Shrock, Glennys Farrar, Jonathan Rosner, Alfred
Goldhaber, Herbert Chen, Carl Albright.]
M.A. in Physics, Princeton University, 1986
M.Div., Episcopal Divinity School, 1993
B.A. in Physics and Mathematics, Pomona College, 1984

Awards/Society Memberships:
Vilas Associate, U. Wisconsin-Madison (2009-2011)
Fellow, American Physical Society (2001)
Recipient, NSF Young Investigator Award (1993-1998)
Recipient, Dissertation Award in Nuclear Physics (1990)
Member, American Physical Society

Current Service:
• Editor, Physics Reports
• Member Sanford Underground Laboratory Advisory Committee
• Member Paul Scherrer Insitute Scientific Advisory Committee (Particle
Physics)
• Member Munich Institute for Astro-Particle Physics Advisory Committee
• Member Spallation Neutron Source Fundamental Neutron Physics Beamline
Advisory Committee
• Convener Intensity Frontier Workshop working group on atoms, nucleons, and
nuclei
• Coordinator Kavli Institute for Theoretical Physics Santa Barbara) program
“Particlegenesis”
(http://www.kitp.ucsb.edu/activities/dbdetails?acro=particles14)
•Co-Chair 2012 Shanghai Particle Physics and Cosmology Symposium (SJTU)
(http://www.physics.sjtu.edu.cn/spcs/ )

Publication Summary:
Publications in refereed journals: 108; total citations: 3569; h-index: 34;
selected highly cited papers:
1. “Semi-leptonic Probes of the Hadronic Neutral Current,” M.J. Musolf, T.W.
Donnelly, J. Dubach, S.J. Pollock, S. Kowalski, and E.J. Beise, Phys. Rep. 23
9 (1994) 1 (225 citations) :
This work provides primary framework for theoretical interpretation of 20 year
-plus program of parity-violating electron scattering experiments at a variety
of laboratories throughout the world. It is the primary reference for this
field.
2. “CERN LHC Phenomenology of an Extended Standard Model with a Real Scalar
Singlet”, V. Barger, P. Langacker, M. McCaskey, M. J. Ramsey-Musolf, and G.
Shaughnessy, Phys. Rev. D77: 035005 (2008) (146 citations):
Provides the framework for identifying mixed singlet-doublet scalars at the LH
C, including scenarios relevant to scalar dark matter and/or an electroweak
phase transition
3. “Sub-Leading Logarithmic Mass-Dependence in Heavy Meson Form Factors”, X.
Ji and M.J. Musolf, Phys. Lett. B257 (1991) 409 (112 citations):
First computation of a two-loop anomalous dimension in the heavy quark
effective theory
4. “The Nucleon Anapole Moment and Parity Violating ep Scattering”, M.J.
Ramsey-Musolf, Shi-lin Zhu, S.J. Puglia, and B.R. Holstein, Phys. Rev. D62:030
008 (2000) (87 citations):
Complete treatment of hadronic contributions to electroweak radiative
corrections relevant for the interpretation of parity-violating electron
scattering experiments at MIT-Bates, Mainz, and Jefferson Laboratories
5. “Hadronic Light-by-Light Contribution to Muon g-2 in Chiral Perturbation
Theory”, M.J. Ramsey-Musolf and Mark. B. Wise, Phys. Rev. Lett. 89, 041601 (2
002) (85 citations):
First two-loop computation of hadronic light-by-light contributions to the
muon anomalous magnetic moment in chiral perturbation theory at leading order
in NC, going beyond the leading log2 terms. Important for the Standard Model g
-2 predictions.
6. “Singlet Higgs Phenomenology and the Electroweak Phase Transition”, S.
Profumo, M. J. Ramsey-Musolf, and G. Shaughnessy, JHEP 0708:010 (2007) (78
citations):
First analysis of LHC signatures of a strong first order electroweak phase
transition in singlet extensions of the Standard Model Higgs sector. Provides
a paradigm for later studies of the LHC phenomenology related to phase
transition physics.
7. “Low-Energy Precision Tests of Supersymmetry”, M.J. Ramsey-Musolf and S.
Su, Phys. Rep. 456:1 (2008) (73 citations):
Comprehensive review of implications of supersymmetry for a variety of low-
energy precision tests that are now considered part of the “Intensity
Frontier”.
8. “Baryogenesis, Electric Dipole Moments, and Dark Matter in the MSSM”, V.
Cirigliano, S. Profumo, and M.J. Ramsey-Musolf, JHEP 0607:002 (2006) (65
citations)
Comprehensive phenomenology of MSSM baryogenesis, showing implications of EDM
and dark matter searches on viability of MSSM baryogenesis in the “resonant
regime”.

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