Publications related to Gamma | EPFL Graph Search

Optical Character Recognition of 19th Century Classical Commentaries: the Current State of Affairs

Matteo Romanello, Sven-Nicolas Yoann Najem

Together with critical editions and translations, commentaries are one of the main genres of publication in literary and textual scholarship, and have a century-long tradition. Yet, the exploitation of thousands of digitized historical commentaries was hit ...

ACM Digital Library2021

Optical Character Recognition of 19th Century Classical Commentaries: the Current State of Affairs

Matteo Romanello, Sven-Nicolas Yoann Najem

Together with critical editions and translations, commentaries are one of the main genres of publication in literary and textual scholarship, and have a century-long tradition. Yet, the exploitation of thousands of digitized historical commentaries was hit ...

2021

Asymptotics of Cheeger constants and unitarisability of groups

Nicolas Monod, Maria Gerasimova

Given a group Gamma, we establish a connection between the unitarisability of its uniformly bounded representations and the asymptotic behaviour of the isoperimetric constants of Cayley graphs of Gamma for increasingly large generating sets. The connection ...

ACADEMIC PRESS INC ELSEVIER SCIENCE2020

Evidence for B+ -> h(c)K(+) and observation of eta(c()2S) -> p(p)over-bar pi(+)pi(-)

Olivier Schneider, Yiming Li, Mingkui Wang, Chao Wang, Tagir Aushev, Sun Hee Kim, Donghyun Kim, Lei Li

A search for the decays B+ -> h(c)K(+) and B-0 -> h(c)K(S)(0) is performed. Evidence for the decay B+ -> h(c)K(+) is found; its significance is 4.8 sigma. No evidence is found for B-0 -> h(c)K(S)(0). The branching fraction for B+ -> h(c)K(+) is measured to ...

American Physical Society2019

Near-Optimal Finite-Length Scaling for Polar Codes Over Large Alphabets

Rüdiger Urbanke, Henry Pfister

For any prime power q, Mori and Tanaka introduced a family of q-ary polar codes based on the q x q Reed-Solomon polarization kernels. For transmission over a q-ary erasure channel, they also derived a closed-form recursion for the erasure probability of ea ...

2019

Measurement of eta(c) (1S), eta(c)(2S), and nonresonant eta 'pi(+)pi(-) production via two-photon collisions

Olivier Schneider, Roberto Gargiani, Yiming Li, Mingkui Wang, Tara Nanut, Chao Wang, Chunmin Zhang, Tagir Aushev, Seyed Sina Mirrazavi Salehian, Alexandra Bondarenko, Arnaud Michel Gelb, Jun Yong Kim, Yong Chan Choi, Ji Hyun Kim, Donghyun Kim, Martin Lubej, Xiao Wang, Lei Li

We report the measurement of gamma gamma -> eta(c) (1S) -> eta(c) (2S) -> eta'pi(+)pi(-) with eta' decays to gamma rho and eta pi(+)pi(-) using 941 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The eta(c) ...

American Physical Society2018

Search for the rare decay of B+ -> l(+)nu e gamma with improved hadronic tagging

Olivier Schneider, Roberto Gargiani, Yiming Li, Mingkui Wang, Mithilesh Nayak, Chao Wang, Gaétan Charles Antoine Giriat, Sun Hee Kim, Tagir Aushev, Seyed Sina Mirrazavi Salehian, Hiroyasu Yamamoto, Donghyun Kim, Arnaud Michel Gelb, Taoufiq Harach, Tao Yang, Xiao Wang, Mia Primorac, Yong Chan Choi, Linlin Cao, Martin Lubej, Jiayun Shen

We present the result of the search for the rare B meson decay of B+ -> l(+)nu e gamma with l = e, mu. For the search the full data set recorded by the Belle experiment of 711 fb(-1) integrated luminosity near the Upsilon(4S) resonance is used. Signal cand ...

American Physical Society2018

Evidence for Isospin Violation and Measurement of CP Asymmetries in B -> K*(892)gamma

Olivier Schneider, Mingkui Wang, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta

We report the first evidence for isospin violation in B -> Kgamma and the first measurement of the difference of CP asymmetries between B+->.K(+)gamma and B-0 -> K-*0 gamma. This analysis is based on the data sample containing 772 x 10(6)BB pairs that wa ...

Amer Physical Soc2017

Search for Structure in the B-s(0)pi(+/-) Invariant Mass Spectrum

Olivier Schneider, Aurelio Bay, Yiming Li, Guido Haefeli, Frédéric Blanc, Christoph Frei, Tatsuya Nakada, Michel De Cian, Luca Pescatore, François Fleuret, Elena Graverini, Chitsanu Khurewathanakul, Renato Quagliani, Federico Betti, Aravindhan Venkateswaran, Luis Miguel Garcia Martin, Katharina Müller, Jian Wang, Zhirui Xu, Yi Zhang, Lei Zhang, Jessica Prisciandaro, Mark Tobin, Minh Tâm Tran, Niko Neufeld, Matthew Needham, Marc-Olivier Bettler, Greig Alan Cowan, Maurizio Martinelli, Donal Patrick Hill, Cédric Potterat, Liang Sun, Pietro Marino, Mirco Dorigo, Jean Wicht, Xiaoxue Han, Liupan An, Federico Leo Redi, Ilya Komarov, Thibaud Humair, Maxime Schubiger, Hang Yin, , , , , , , , , , , , , , , , , ,

Measurement of the Direct CP Asymmetry in over-bar & RARR; gamma; Decays with a Lepton Tag

Olivier Schneider, Yiming Li, Mingkui Wang, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta

We report the measurement of the direct CP asymmetry in the radiative (B) over bar -> Xs+d gamma decay using a data sample of (772 +/- 11) x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-en ...

Amer Physical Soc2015

Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma

Olivier Schneider, Yiming Li, Chao Wang, Tagir Aushev, Sun Hee Kim, Tara Nanut, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta

We search for the decay B-s(0) -> gamma gamma and measure the branching fraction for B-s(0) -> phi gamma using 121.4 fb(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The B-s(0) ...

American Physical Society2015

Search for B-o -> p(Lambda)over-bar pi(-)gamma at Belle

Olivier Schneider, Mingkui Wang, Chao Wang, Tagir Aushev, Ji Hyun Kim, Jing Li

We search for the charmless B-o decay with final state particles p (Lambda) over bar pi(-)gamma using the full data sample that contains 772 x 10(6)B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-e ...

American Physical Society2014

High-statistics study of K-S(0) pair production in two-photon collisions

Olivier Schneider, Yiming Li, Mingkui Wang, Chao Wang, Tagir Aushev, Jun Yong Kim, Ji Hyun Kim, Donghyun Kim, Dipanwita Dutta, Xiao Wang, Jing Li

We report a high-statistics measurement of the differential cross section of the process gamma gamma -> (KSKS0)-K-0 in the range 1.05 GeV

Oxford Univ Press Inc2013

First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions

Olivier Schneider, Remi Léandre Albert Louvot, Tagir Aushev, Xiao Wang, Jing Li

The invariant mass spectrum of the eta 'pi(+)pi(-) final state produced in two-photon collisions is obtained using a 673 fb(-1) data sample collected in the vicinity of the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) ...

American Physical Society2012

First Observation of B-s(0) -> J/psi eta and B-s(0) -> J/psi eta '

Olivier Schneider, Remi Léandre Albert Louvot, Yiming Li, Chao Wang, Tagir Aushev, Jean Wicht, Jun Yong Kim, Ji Hyun Kim, Jing Li

We report first observations of B-s(0) -> J/psi eta and B-s(0) -> J/psi eta'. The results are obtained from 121.4 fb(-1) of data collected at the Gamma(5S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We obtain the branching fractions B ...

2012

First observation of radiative B0 -> phi K0 gamma decays and measurements of their time-dependent CP violation

Olivier Schneider, Remi Léandre Albert Louvot, Yiming Li, Sun Hee Kim, Jun Yong Kim, Ji Hyun Kim, Jing Li

We report the first observation of the radiative decay B-0 -> phi K-0 gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a s ...

American Physical Society2011

Search for charmonium and charmoniumlike states in gamma(2S) radiative decays

Olivier Schneider, Remi Léandre Albert Louvot, Yiming Li, Mingkui Wang, Chao Wang, Tagir Aushev, Jun Yong Kim, Ji Hyun Kim, Xiao Wang, Jing Li, Xuan Li

Using a sample of 158 x 10(6) gamma (2S) events collected with the Belle detector, charmonium and charmoniumlike states with even charge parity are searched for in gamma (2S) radiative decays. No significant chi(cJ) or eta(c) signal is observed, and the fo ...

American Physical Society2011

Evidence for a New Resonance and Search for the Y(4140) in the γγ→ϕJ/ψ Process

Olivier Schneider, Aurelio Bay, Remi Léandre Albert Louvot, Chao Wang, Tagir Aushev, Vladislav Balagura, Sun Hee Kim, Ji Hyun Kim, Xiao Wang, Jing Li

The process gamma gamma -> phi J/psi is measured using a data sample of 825 fb(-1) collected with the Belle detector. A narrow peak of 8:8(-3.2)(+4.2) events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The ...

2010

Search for charmonium and charmoniumlike states in Υ(1S) radiative decays

Olivier Schneider, Remi Léandre Albert Louvot, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Xiao Wang, Jing Li

Using a sample of 102 X 10(6) Y(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Y(1S) radiative decays. No significant chi(cJ) or eta(c) signal is observed and 90% C ...

American Physical Society2010

Feedback topology and XOR-dynamics in Boolean networks with varying input structure

Carlo Maffi

We analyze a model of fixed in-degree random Boolean networks in which the fraction of input-receiving nodes is controlled by the parameter gamma. We investigate analytically and numerically the dynamics of graphs under a parallel XOR updating scheme. This ...

2009