Publications associées à Measurement of the ratio of branching fractions of the decays0(2S) and arrange Lambda

First indication of the Lambda-b baryon decay to a charmless baryonic final state

The Standard Model of particle physics provides predictions of many fundamental processes. One of them is the existence of charmless processes involving only baryons, namely charmless purely baryonic decays of baryons. Yet none of these decay modes has bee ...

EPFL2021

Search for heavy neutral leptons in W plus . mu plus mu +/- jet 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, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Vincenzo Battista, Maurizio Martinelli, Tommaso Colombo, Guido Andreassi, Maxim Borisyak, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Yi Zhang, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Donal Patrick Hill, Federico Betti, Renato Quagliani, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb-1 of proton-proton collision data at centre-of-mass energies of 7 and 8 TeV collected ...

SPRINGER2021

Test of lepton flavor universality and search for lepton flavor violation in B -> Kll decays

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

We present measurements of the branching fractions for the decays B -> K mu(+)mu(-) and B -> Ke(+)e(-), and their ratio (R-K), using a data sample of 711 fb(-1) that contains 772 x 10(6) B (B) over bar events. The data were collected at the Gamma(4S) reson ...

Springer Nature2021

Search for lepton flavour violation in B meson decays at LHCb

Lino Ferreira Lopes

The current limitations of the standard model of elementary particle physics drive the search for phenomenons forbidden within that framework with the goal to unveil a more universal theory. This thesis presents the search for two lepton flavour violating ...

EPFL2021

Search for the rare decay B-0 -> J/psi phi

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, Guido Andreassi, Maxim Borisyak, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Yi Zhang, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Donal Patrick Hill, Federico Betti, Renato Quagliani, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

A search for the rare decay B-0 -> J/psi phi, is performed using pp collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb(-1). No significant signal of the decay is ...

IOP PUBLISHING LTD2021

Measurement of Xi(++)(cc) production in pp collisions at root s=13 TeV

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, Olivier Göran Girard, Lesya Shchutska, Liang Sun, Maxime Schubiger, Thibaud Humair, Xiaoqing Zhou, Hang Yin, Xiaoxue Han, Paolo Durante, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Vladislav Balagura, Zhirui Xu, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Alexey Boldyrev, Simone Meloni, Maurizio Martinelli, Tommaso Colombo, Guido Andreassi, Maxim Borisyak, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Ho Ling Li, Yi Zhang, Surapat Ek-In, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Yao Zhou, Xuan Li, Donal Patrick Hill, Federico Betti, Hossein Afsharnia, Renato Quagliani, Almagul Kondybayeva, Elisabeth Maria Niel, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

The production of Xi(++)(cc) baryons in proton-proton collisions at a centre-of-mass energy of root s = 13 Tev is measured in the transverse-momentum range 4 < p(T) < 15 GeV/c and the rapidity range 2.0 < y < 4.5. The data used in this measurement correspo ...

IOP PUBLISHING LTD2020

Search for the doubly heavy Xi bc0 baryon via decays to D(0)pK(-)

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, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Ho Ling Li, Yi Zhang, Surapat Ek-In, Maria Elena Stramaglia, Lei Zhang, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Yao Zhou, Xuan Li, Donal Patrick Hill, Federico Betti, Hossein Afsharnia, Renato Quagliani, Almagul Kondybayeva, Elisabeth Maria Niel, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang, Katharina Müller

A search for the doubly heavy Xi bc0 baryon using its decay to the D(0)pK(-) final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integr ...

Springer Nature2020

Test of lepton universality with Lambda(0)(b) -> pK(-) l(+)l(-)

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, Olivier Göran Girard, Lesya Shchutska, Liang Sun, 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, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Ho Ling Li, Yi Zhang, Surapat Ek-In, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Yao Zhou, Xuan Li, Donal Patrick Hill, Federico Betti, Hossein Afsharnia, Renato Quagliani, Almagul Kondybayeva, Elisabeth Maria Niel, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

The ratio of branching fractions of the decays -> pK(-)mu(+)mu(-),RpK-1}, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb(-1) recorded with the LHCb experiment at center-of-mass energies ...

Springer Nature2020

Measurement of the Lambda(0)(b) -> J/psi Lambda angular distribution and the Lambda(0)(b) polarisation in pp collisions

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, Zhirui Xu, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Yu Zheng, Vincenzo Battista, Maurizio Martinelli, Tommaso Colombo, Guido Andreassi, Maxim Borisyak, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Yi Zhang, Surapat Ek-In, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Donal Patrick Hill, Federico Betti, Renato Quagliani, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

This paper presents an analysis of the Lambda(0)(b) -> J/psi Lambda angular distribution and the transverse production polarisation of Lambda(0)(b) baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The measurements are perfo ...

Springer Nature2020

Measurement of CP-Averaged Observables in the B-0 -> K-star 0 mu(+)mu(-) Decay

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, 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, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Ho Ling Li, Yi Zhang, Surapat Ek-In, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Yao Zhou, Xuan Li, Donal Patrick Hill, Federico Betti, Hossein Afsharnia, Renato Quagliani, Almagul Kondybayeva, Elisabeth Maria Niel, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

An angular analysis of the B-0 -> K-0 (-> K+pi(-))mu(+)mu(-) decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb(-1) of pp collision data collected with the LHCb experiment. The full set of CP-averaged observables are det ...

AMER PHYSICAL SOC2020

Measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0

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, Guido Andreassi, Maxim Borisyak, Dipanwita Dutta, Plamen Hristov Hopchev, Anton Petrov, Jian Wang, Liupan An, Preema Rennee Pais, Pavol Stefko, Yi Zhang, Maria Elena Stramaglia, Lei Zhang, Luca Pescatore, Vladimir Macko, Adam Davis, Zhipeng Tang, Pietro Marino, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Elena Graverini, Maria Vieites Diaz, Evgenii Shmanin, Donal Patrick Hill, Federico Betti, Renato Quagliani, Aravindhan Venkateswaran, Feng Jiang, Wenyu Zhang, Yiming Li, Yi Wang, Vitalii Lisovskyi, Luis Miguel Garcia Martin, Giovanni Carboni, Zheng Wang

A measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0 is performed using proton- proton - collision data corresponding to an integrated luminosity of 5 fb(-1) collected by the LHCb experiment between 2011 and 2016. The branching fracti ...

American Physical Society2020