Search for Z′ bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at √s=13 TeV

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Searches for rare B-s(0) and B-0 decays into four muons

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Vladimir Macko, Federico Leo Redi, Sebastian Schulte, Donal Patrick Hill, Guillaume Max Pietrzyk, Maria Vieites Diaz, Marie Theres Christin Bachmayer, Lino Ferreira Lopes, Matthieu Philippe Luther Marinangeli, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Surapat Ek-In, Ana Bárbara Rodrigues Cavalcante, Sara Celani, Renato Quagliani, Carina Trippl, Sonia Amina Bouchiba, Alison Maria Tully, Maarten Willibrord Uriël Van Dijk

Searches for rare B-s(0) and B-0 decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). Direct decays and decays via light scalar and J/psi resonances ...

Springer Nature2022

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

Olivier Martin, Ian Smith, Matthias Finger, Richard Pitts, Miguel Fernández Ruiz, Sun Hee Kim, Jean-François Carlin, Jian Zhao, Arvind Shah, Chao Wang, Melody Swartz, Yi Zhang, Dalziel Joseph Wilson, Hoài-Minh Nguyên, Pedro Camilo de Oliveira e Silva, Alberto Hernando de Castro, João Miguel das Neves Duarte, Rakesh Chawla, Myun Sik Kim, Tian Cheng, Thomas Mountford, Yixing Chen, Ananda Sankar Roy, Varun Sharma, Bertrand François, Josef Andreas Schuler, Aravind Kumar Chandiran, Yogesh Singh Chauhan, Jae-Woo Choi, Jin Won Seo, Joo Yeon Kim, Wei Sun, Xiaoqiang Wang, Kyumin Lee, Muhammad Aiman Bin Rahmanudin Hamdan, Chia-Chun Chen, Randoald Müller, Alexis Kalogeropoulos, Jung Eung Park, Ana Margarida Da Costa Ricardo, Sebastian James Davis, Melissa Catherine Olson, Christoph Ernst René Schäfer, Adam Wade Marcus, Johannes Steen, Adrien Alexis Paul Chauvet, Hoang-Trang Lam, Maria Isabel Cordero Campana, Carlos Andres Peña Reyes, Justin Terence Notz Pekkanen, Cristopher Ariel Zeballos Avila

The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e(+/-)mu(-/+), e(+)e(-), or mu(+)mu(-)). The measurement is performed using 138 ...

Springer Nature2022

Electroweak and Higgs Physics at Very High Energy

Lorenzo Ricci

Effective Field Theories (EFTs) allow a description of low energy effects of heavy new physics Beyond the Standard Model (BSM) in terms of higher dimensional operators among the SM fields. EFTs are not only an elegant and consistent way to describe heavy n ...

EPFL2022

Search for the radiative Xi(-)(b) -> Xi(-)gamma decay

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Vladimir Macko, Federico Leo Redi, Sebastian Schulte, Donal Patrick Hill, Tara Nanut, Minh Tâm Tran, Guillaume Max Pietrzyk, Maria Vieites Diaz, Marie Theres Christin Bachmayer, Lino Ferreira Lopes, Matthieu Philippe Luther Marinangeli, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Maria Elena Stramaglia, Surapat Ek-In, Ana Bárbara Rodrigues Cavalcante, Sara Celani, Carina Trippl, Sonia Amina Bouchiba, Thi Dung Nguyen, Alison Maria Tully, Mâu Chung Nguyên, Maarten Willibrord Uriël Van Dijk

The first search for the rare radiative decay Xi(-)(b) -> Xi(-)gamma is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4 fb(-1). The Xi(- ...

Springer Nature2022

Energy correlators of hadronically decaying electroweak bosons

Lorenzo Ricci, Marc Riembau Saperas

Energy correlators are field-theoretically clean and phenomenologically valuable probes of QCD dynamics. We explore the possibility of using the information encoded in the energy correlators of a hadronically decaying electroweak vector boson in order to e ...

American Physical Society2022

Cosmological relaxation through the dark axion portal

Valerie Fiona Domcke

The dark axion portal is a coupling of an axion-like particle to a dark photon kinetically mixed with the visible photon. We show how this portal, when applied to the relaxion, can lead to cosmological relaxation of the weak scale using dark photon product ...

Springer Nature2022