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Songmei Wu

Cette personne n’est plus à l’EPFL

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Publications associées (176)

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Search for relativistic fractionally charged particles in space

Songmei Wu, Johan Juul Chang, Zhirui Xu, Jennifer Maria Frieden, Siyuan Wang, Junqiu Liu, Jian Wang, Yi Zhang, Yong Yang, Hao Liu, Ming Gao, Cheng Zhao, Xuan Li, Arshia Ruina, Chiara Perrina, Andrii Kotenko, Wenyu Zhang, Xiao Wang, Yi Wang, Wei Li, Jie Chen, Shuai Liu, Yao Zhang

More than a century after the performance of the oil drop experiment, the possible existence of fractionally charged particles (FCPs) still remains unsettled. The search for FCPs is crucial for some extensions of the Standard Model in particle physics. Mos ...

American Physical Society2022

Measurement of cos 2 beta in B-0 -> D((*))h(0) with D -> K-S(0)pi(+) pi(-) decays by a combined time-dependent Dalitz plot analysis of BABAR and Belle data

François Bianchi, Roberto Gargiani, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Gerhard Raven, Mingkui Wang, Marilisa Neri, Liang Sun, Chao Wang, Taoufiq Harach, Songmei Wu, Yong Chan Choi, Greig Alan Cowan, Alexandra Bondarenko, Lorenzo Vitale, Arnaud Michel Gelb, Aaron James Rossini, Amaury Robert Dame, Gaétan Charles Antoine Giriat, Jun Yong Kim, Mithilesh Nayak, Jiayun Shen, Armend Gazmeno Hati, John Wilson, Tara Nanut, Donghyun Kim, Martin Lubej, Lei Li, Ji Hyun Kim, Yiming Li

We report measurements of sin 2 beta and cos 2 beta using a time-dependent Dalitz plot analysis of B-0 -> D((*))h(0) with D -> K-S(0)pi(+)pi(-) decays, where the light unflavored and neutral hadron h(0) is a pi(0),eta, or omega meson. The analysis uses a c ...

American Physical Society2018

First Evidence for cos 2 beta > 0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

François Bianchi, Roberto Gargiani, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Gerhard Raven, Mingkui Wang, Marilisa Neri, Liang Sun, Chao Wang, Taoufiq Harach, Songmei Wu, Yong Chan Choi, Greig Alan Cowan, Alexandra Bondarenko, Lorenzo Vitale, Seyed Sina Mirrazavi Salehian, Arnaud Michel Gelb, Aaron James Rossini, Amaury Robert Dame, Gaétan Charles Antoine Giriat, Jun Yong Kim, Mithilesh Nayak, Jiayun Shen, Armend Gazmeno Hati, John Wilson, Tara Nanut, Donghyun Kim, Martin Lubej, Lei Li, Ji Hyun Kim, Yiming Li

We present first evidence that the cosine of the CP-violating weak phase 2 beta is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B-0 -> ...

2018

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Personnes menant des recherches similaires (32)

Olivier Schneider

Après une thèse en physique des particules à l'Université de Lausanne, soutenue en 1989, Olivier Schneider rejoint le LBL, Lawrence Berkeley Laboratory (Californie), pour travailler sur l'expérience CDF au Tevatron de Fermilab (Illinois), d'abord au bénéfice d'une bourse de chercher débutant du Fonds National Suisse pour la Recherche Scientifique, puis comme post-doc au LBL. Il participe à la construction et à la mise en service du premier détecteur de vertex au silicium fontionnant avec succès auprès d'un collisionneur hadronique, détecteur qui a permis la découverte du sixième quark, appelé "top". Dès 1994, il revient en Europe et participe à l'expérience ALEPH au grand collisionneur électron-positon du CERN (Genève), comme boursier puis comme titulaire d'un poste de chercheur au CERN. Il se spécialise en physique des saveurs lourdes. En 1998, il est nommé professeur associé à l'Université de Lausanne, puis professeur extraordinaire à l'EPFL en 2003, et enfin professeur ordinaire à l'EPFL en 2010. Ayant participé depuis 1997 à la préparation de l'expérience LHCb au collisionneur LHC du CERN, entrée en fonction à fin 2009, il en analyse maintenant les données. Il contribue aussi depuis 2001 à l'exploitation des données enregistrées par l'expérience Belle au laboratoire KEK (Tsukuba, Japon). Ces deux expériences étudient principalement les désintégrations de hadrons contenant un quark b, ainsi que la violation de CP, c'est-à-dire le non-respect de la symétrie entre matière et antimatière.

Yiming Li

Aurelio Bay

Aurelio Bay graduated in physics at the University of Lausanne (UNIL) in 1980 and got his PhD degree from the same institution in 1986 for a work on the determination of the axial form factor of the ? meson. He then went to Lawrence Berkeley Laboratories (LBL), USA as a post doc for two years, where he worked on the TPC/2? Electromagnetic Calorimeter and the SSC/LHC detector. He then came back to Europe and was named Maître Assistant at University of Geneva till 1994, where he started working at the L3 experiment of LEP at CERN. He was appointed Assistant Professor at the University of Lausanne in 1994 and Full Professor in 1998, continuing working at LEP, LEP2 and LHCb at CERN , and starting a collaboration at BELLE experiment at KEK, Tsukuba (Japan). At the University of Lausanne he was Director of the Institute of High Energy Physics, Deputy Director of the Physics Department and Deputy of the Dean of the Faculty of Sciences. In 2003, following the merge of UNIL physics department into the EPFL School of Basic Sciences, he was appointed Full Professor at Ecole Polytechnique Fédérale de Lausanne (EPFL), and Director of the EPFL Laboratory of High Energy Physics.

Since 2009

Secretary General , World Energy Council (WEC).

Since 2006

Titulary Professor , Advisor to the President of EPFL and EPFL's Energy Center on energy issues. Expertise: International energy & environment policy and strategy.

2001-2009

Senior Director , Energy Industries & Strategy at the World Economic Forum (WEF); Member of the Forum's Executive Council.

2002-2003

Lecturer , postgraduate course on "Energy Systems in an Economywide Framework", for the Master of Science in Energy Systems at the Swiss Federal Institute of Technology, Lausanne (EPFL).

2001-2003

European Master in Applied Ethics , Ethics Centre, University of Zurich; specialisation in multi-stakeholder theory.

2000-2001

Research fellow at the Centre for Energy Policy and Economics of the Swiss Federal Institutes of Technology co-lecturing "Socio-economic aspects of Energy Systems".

1996-2000

Dr ès Sciences , PhD thesis at the Swiss Federal Institute of Technology, Lausanne (EPFL) and the Paul Scherrer Institute, Villigen (PSI). Domain: Modelling the links between Energy Policy, Greenhouse Gas Emissions and Economic Welfare.

1997-2000

Master (DES) in Econometrics at the University of Geneva.

1995-1997

Master of Science in Energy Systems at the Swiss Federal Institute of Technology, Lausanne (EPFL); specialisation in Energy Economics and Management.

1995-2001

Research fellow at the Laboratory of Energy Systems of the Swiss Federal Institute of Technology, Lausanne (EPFL).

1989-1995

Dipl. El.-Ing. , graduate studies in Electrical Engineering at the Swiss Federal Institutes of Technology, Zürich (ETHZ) (4th year in Lausanne); training/diploma thesis at the Institute of Microtechnique, University of Neuchâtel (UNINE) (solar cells research).

Personnes menant des recherches similaires (32)

Since 2009

Secretary General , World Energy Council (WEC).

Since 2006

Titulary Professor , Advisor to the President of EPFL and EPFL's Energy Center on energy issues. Expertise: International energy & environment policy and strategy.

2001-2009

Senior Director , Energy Industries & Strategy at the World Economic Forum (WEF); Member of the Forum's Executive Council.

2002-2003

Lecturer , postgraduate course on "Energy Systems in an Economywide Framework", for the Master of Science in Energy Systems at the Swiss Federal Institute of Technology, Lausanne (EPFL).

2001-2003

European Master in Applied Ethics , Ethics Centre, University of Zurich; specialisation in multi-stakeholder theory.

2000-2001

Research fellow at the Centre for Energy Policy and Economics of the Swiss Federal Institutes of Technology co-lecturing "Socio-economic aspects of Energy Systems".

1996-2000

1997-2000

Master (DES) in Econometrics at the University of Geneva.

1995-1997

Master of Science in Energy Systems at the Swiss Federal Institute of Technology, Lausanne (EPFL); specialisation in Energy Economics and Management.

1995-2001

Research fellow at the Laboratory of Energy Systems of the Swiss Federal Institute of Technology, Lausanne (EPFL).

1989-1995