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

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Publications associées (32)

Observation of CP violation in two-body B-(s)(0)-meson decays to charged pions and kaons

Christoph Frei, Peter Clarke, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, François Fleuret, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Frédéric Teubert, Gerhard Raven, Mingkui Wang, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Axel Kuonen, Olivier Göran Girard, Liang Sun, Maxime Schubiger, Brice Emile Maurin, Thibaud Humair, Hang Yin, Xiaoxue Han, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Vladislav Balagura, Lino Ferreira Lopes, Zhirui Xu, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Vincenzo Battista, Maurizio Martinelli, Tommaso Colombo, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at root s=13 TeV

Rakesh Chawla, Arvind Shah, Andrea Rizzi, Matthias Finger, Bandeep Singh, Federica Legger, Bertrand François, Thomas Berger, Jian Zhao, João Miguel das Neves Duarte, Tagir Aushev, Hua Zhang, Quentin Python, Alexis Kalogeropoulos, Chao Wang, Yixing Chen, Tian Cheng, Ioannis Papadopoulos, Valérie Scheurer, Meng Xiao, Wei Sun, Maren Tabea Meinhard, Qian Wang, Michele Bianco, Doohyun Kim, Varun Sharma, Jessica Prisciandaro, Joao Varela, Francesco Fiori, Sourav Sen, Ashish Sharma, Seungkyu Ha, David Vannerom, Csaba Hajdu, Sanjeev Kumar, Sebastiana Gianì, Kun Shi, Abhisek Datta, Miao Hu, Siyuan Wang, Peter Hansen, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Modeling the response of a diamond detector in the zero power reactor CROCUS

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The present manuscript documents the development of a practical calculation scheme to model the response of a diamond detector in the mixed (neutron and gamma) radiation field of the CROCUS experimental reactor at EPFL. The model is shown to perform reason ...

SPRINGER HEIDELBERG2021

Observation of a New Excited Beauty Strange Baryon Decaying to Xi(-)(b)pi(+)pi(-)

Rakesh Chawla, Arvind Shah, Andrea Rizzi, Matthias Finger, Bandeep Singh, Federica Legger, Thomas Berger, Jian Zhao, João Miguel das Neves Duarte, Tagir Aushev, Hua Zhang, Alexis Kalogeropoulos, Chao Wang, Yixing Chen, Tian Cheng, Ioannis Papadopoulos, Marco Pisano, Valérie Scheurer, Meng Xiao, Wei Sun, Maren Tabea Meinhard, Qian Wang, Michele Bianco, Doohyun Kim, Varun Sharma, Jessica Prisciandaro, Joao Varela, Francesco Fiori, Sourav Sen, Ashish Sharma, Seungkyu Ha, David Vannerom, Csaba Hajdu, Sanjeev Kumar, Sebastiana Gianì, Kun Shi, Abhisek Datta, Guido Andreassi, Miao Hu, Siyuan Wang, Peter Hansen, Muhammad Waqas, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Observation of the Radiative Decays of Upsilon(1S) to chi(c1)

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

We report the first observation of the radiative decay of the Upsilon(1S) into a charmonium state. The significance of the observed signal of Upsilon(1S) -> gamma chi(c1) is 6.3 standard deviations including systematics. The branching fraction is calculate ...

AMER PHYSICAL SOC2020

Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries

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In this paper, we study the interactions of electromagnetic waves with a non-dispersive dynamic medium that is temporally dependent. Electromagnetic fields under material time-modulation conserve their momentum but not their energy. We assume a time-variat ...

2020

Updated measurement of decay-time-dependent CP asymmetries in D-0 -> K+ K- and D-0 -> pi(+)pi(-) decays

Christoph Frei, Peter Clarke, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, François Fleuret, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Frédéric Teubert, Gerhard Raven, Mingkui Wang, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Axel Kuonen, Olivier Göran Girard, Liang Sun, Maxime Schubiger, Brice Emile Maurin, Thibaud Humair, Hang Yin, Xiaoxue Han, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Vladislav Balagura, Lino Ferreira Lopes, Zhirui Xu, Bjorn Jozef Maria Robroek, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Vincenzo Battista, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Dalitz analysis of D-0 -> K- pi(+)eta decays at Belle

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

We present the results of the first Dalitz plot analysis of the decay D-0 -> K-pi(+)eta. The analysis is performed on a data set corresponding to an integrated luminosity of 953 fb(-1) collected by the Belle detector at the asymmetric-energy e(+)e(-) KEKB ...

American Physical Society2020

Model-Independent Study of Structure in B+ -> D+D-K+ Decays

Christoph Frei, Peter Clarke, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, François Fleuret, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Frédéric Teubert, Gerhard Raven, Mingkui Wang, Frédéric Blanc, Matthew Needham, Lesya Shchutska, Liang Sun, Marco Guarise, Maxime Schubiger, Thibaud Humair, Xiaoqing Zhou, Hang Yin, Xiaoxue Han, Paolo Durante, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Vladislav Balagura, Lino Ferreira Lopes, Zhirui Xu, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Alexey Boldyrev, Simone Meloni, Maurizio Martinelli, Tommaso Colombo, Guido Andreassi, Maxim Borisyak, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Emergence of Nontrivial Low-Energy Dirac Fermions in Antiferromagnetic EuCd2As2

Joël Mesot, Pierre Richard, Hang Li, Vladimir N. Strocov, Han Wang

Parity-time symmetry plays an essential role for the formation of Dirac states in Dirac semimetals. So far, all of the experimentally identified topologically nontrivial Dirac semimetals (DSMs) possess both parity and time reversal symmetry. The realizatio ...

Wiley-V C H Verlag Gmbh2020

Amplitude analysis for the measurement of the photon polarisation in B rightarrow K pi pi gamma decays

Violaine Bellée

This work proposes a method to measure the photon polarisation in

B^+ \rightarrow K^+ \pi^- \pi^+ \gamma

decays and prepares the necessary elements for this measurement using the data sets collected by the LHCb experiment at CERN in

2011

,

2012

, $2016 ...

EPFL2020

First branching fraction measurement of the suppressed decay Xi(0)(c) -> pi(-) Lambda(+)(c)

Ian William Marison, Christoph Frei, Peter Clarke, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, François Fleuret, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Valérie Jeanne Thérèse Renaudin-Schouler, Frédéric Teubert, Gerhard Raven, Mingkui Wang, Frédéric Blanc, Matthew Needham, Lesya Shchutska, Basil Andrew Stansfield Davis, Liang Sun, Marco Guarise, Chao Wang, Achille Mauri, Maxime Schubiger, Mercedes Hannelore Rittmann-Frank, Xiaoqing Zhou, Hang Yin, Xiaoxue Han, Paolo Durante, Craig Matthew Smith, Jorge Miguel Dias Almeida Rodrigues Soares, Guillaume Max Pietrzyk, Huizhen Liu, Vladislav Balagura, Zhirui Xu, Bjorn Jozef Maria Robroek, Yang Zou, Mark Tobin, Xing Li, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

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Guido Andreassi

Dipanwita Dutta

Plamen Hristov Hopchev

Preema Rennee Pais

Maria Elena Stramaglia

Ana Bárbara Rodrigues Cavalcante

Federico Leo Redi

Sebastian Schulte

Veronica Sølund Kirsebom

Elena Graverini

Maria Vieites Diaz

Evgenii Shmanin

Donal Patrick Hill

Renato Quagliani

Aravindhan Venkateswaran

Vitalii Lisovskyi

Luis Miguel Garcia Martin

Giovanni Carboni

The time-dependent CP asymmetries of B-0 -> pi(+)pi(-) and B-s(0) -> K+K- decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 1.9 fb(-1), collected with the LHCb detector at a centre-of-mass energy of 13TeV ...

Springer Nature2021

Dipanwita Dutta

Vladimir Petrov

Muhammad Ansar Iqbal

Viktor Khristenko

Benjamin William Allen

Muhammad Shoaib

Andromachi Tsirou

Georgios Anagnostou

Konstantin Androsov

Werner Lustermann

Ioannis Evangelou

Davide Di Croce

Leonardo Cristella

Ekaterina Kuznetsova

A search for leptoquarks produced singly and in pairs in proton-proton collisions is presented. We consider the leptoquark (LQ) to be a scalar particle of charge -1/3e coupling to a top quark plus a tau lepton (t tau) or a bottom quark plus a neutrino (b n ...

2021

Dipanwita Dutta

Vladimir Petrov

Muhammad Ansar Iqbal

Viktor Khristenko

Muhammad Shoaib

Andromachi Tsirou

Georgios Anagnostou

Konstantin Androsov

Werner Lustermann

Ioannis Evangelou

Davide Di Croce

Leonardo Cristella

Ekaterina Kuznetsova

The Xi(-)(b)pi(+)pi(-) invariant mass spectrum is investigated with an event sample of proton-proton collisions at root s = 13 TeV, collected by the CMS experiment at the LHC in 2016-2018 and corresponding to an integrated luminosity of 140 fb(-1). The gro ...

2021

Maurizio Martinelli

Tommaso Colombo

Guido Andreassi

Dipanwita Dutta

Plamen Hristov Hopchev

Preema Rennee Pais

Maria Elena Stramaglia

Ana Bárbara Rodrigues Cavalcante

Federico Leo Redi

Sebastian Schulte

Veronica Sølund Kirsebom

Elena Graverini

Maria Vieites Diaz

Evgenii Shmanin

Donal Patrick Hill

Renato Quagliani

Aravindhan Venkateswaran

Vitalii Lisovskyi

Luis Miguel Garcia Martin

Giovanni Carboni

A search for decay-time-dependent charge-parity (CP) asymmetry in D-0 -> K+ K- and D-0 -> pi(+)pi(-) eff decays is performed at the LHCb experiment using proton-proton collision data recorded at a center-of-mass energy of 13 TeV, and corresponding to an in ...

American Physical Society2020

Dipanwita Dutta

Plamen Hristov Hopchev

Preema Rennee Pais

Maria Elena Stramaglia

Ana Bárbara Rodrigues Cavalcante

Federico Leo Redi

Sebastian Schulte

Veronica Sølund Kirsebom

Elena Graverini

Maria Vieites Diaz

Evgenii Shmanin

Donal Patrick Hill

Hossein Afsharnia

Renato Quagliani

Almagul Kondybayeva

Elisabeth Maria Niel

Aravindhan Venkateswaran

Vitalii Lisovskyi

Luis Miguel Garcia Martin

Giovanni Carboni

Katharina Müller

The only anticipated resonant contributions to B+ -> D+D-K+ decays are charmonium states in the D+D- channel. A model-independent analysis, using LHCb proton-proton collision data taken at centerof-mass energies of root s = 7, 8, and 13 TeV, corresponding ...

AMER PHYSICAL SOC2020

Violaine Bellée

Alexey Boldyrev

Maurizio Martinelli

Remy Jean Henry Albrecht

Tommaso Colombo

Guido Andreassi

Michael Thompson McCann

Dipanwita Dutta

Plamen Hristov Hopchev

Preema Rennee Pais

Maria Elena Stramaglia

Arnout Lodewijk M Beckers

John Martin Kolinski

Federico Leo Redi

Sebastian Schulte

Veronica Sølund Kirsebom

Elena Graverini

Evgenii Shmanin

Donal Patrick Hill

Hossein Afsharnia

Renato Quagliani

Almagul Kondybayeva

Elisabeth Maria Niel

Aravindhan Venkateswaran

Vitalii Lisovskyi

Luis Miguel Garcia Martin

Giovanni Carboni

The Xi(0)(c) baryon is unstable and usually decays into charmless final states by the c -> sud transition. It can, however, also disintegrate into a pi(-) meson and a Lambda(+)(c) baryon via s quark decay or via cs -> dc weak scattering. The interplay betw ...

American Physical Society2020