Publications de Songmei Wu | EPFL Graph Search

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

Nanostructured surface topographies have an effect on bactericidal activity

Jürgen Brugger, Songmei Wu

Background Due to the increased emergence of antimicrobial resistance, alternatives to minimize the usage of antibiotics become attractive solutions. Biophysical manipulation of material surface topography to prevent bacterial adhesion is one promising app ...

2018

Ultrathin Alumina Membranes as Scaffold for Epithelial Cell Culture from the Intestine of Rainbow Trout

Philippe Renaud, Songmei Wu, Kristin Schirmer, Carolin Drieschner

Permeable membranes are indispensable for in vitro epithelial barrier models. However, currently available polymer-based membranes are low in porosity and relatively thick, resulting in a limited permeability and unrealistic culture conditions. In this stu ...

Amer Chemical Soc2017

Measurement of the track reconstruction efficiency at LHCb

Christoph Frei, Peter Clarke, Jean Wicht, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Joël Bressieux, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Pierre Jaton, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Liang Sun, Lucía Castillo García, Songmei Wu, Barinjaka Rakotomiaramanana, Xiaoxue Han, Luis Alberto Granado Cardoso, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Ilya Komarov, Zhirui Xu, Mark Tobin, Victor Coco, Mirco Dorigo, Sebastiana Gianì, Maurizio Martinelli, Jian Wang, Liupan An, Yi Zhang, Lei Zhang, , , , , , , , ,

Model-independent confirmation of the Z(4430)(-) state

Christoph Frei, Peter Clarke, Jean Wicht, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Joël Bressieux, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Pierre Jaton, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Raluca Anca Muresan, Liang Sun, Songmei Wu, Barinjaka Rakotomiaramanana, Xiaoxue Han, Paolo Durante, Jessica Prisciandaro, Vladislav Balagura, Ilya Komarov, Zhirui Xu, Mark Tobin, Victor Coco, Mirco Dorigo, Sebastiana Gianì, Maurizio Martinelli, Jian Wang, Liupan An, Yi Zhang, Lei Zhang, Luca Pescatore, , , , , , ,

First Observation of CP Violation in (B)over-bar(0) -> D(CP)((*))h(0) Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

François Bianchi, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Gerhard Raven, Mingkui Wang, Liang Sun, Chao Wang, Songmei Wu, Greig Alan Cowan, Dipanwita Dutta, Jun Yong Kim, John Wilson, Tara Nanut, Donghyun Kim, Ji Hyun Kim

We report a measurement of the time-dependent CP asymmetry of (B) over bar (0) -> D(CP)((*))h(0) decays, where the light neutral hadron h(0) is a pi(0), eta , or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+K-, K-S(0)pi(0) ...

Amer Physical Soc2015

Soft nanofluidics governing minority ion exclusion in charged hydrogels

Fabien Patrick Wildhaber, Thomas Michael Braschler, Songmei Wu, Sidi Ahmed Bencherif

We investigate ionic partition of negatively charged molecular probes into also negatively charged, covalently crosslinked alginate hydrogels. The aim is to delimit the domain of validity of the major nanoelectrostatic models, and in particular to assess t ...

Royal Society of Chemistry2015