Publications associées à Search for new physics in high-mass diphoton events from proton-proton collisions at √<i>s</i>=13 TeV

Publications associées (17)

Measurement of the Higgs Boson Mass and Width Using the Four-lepton Final State in Proton-proton Collisions at √s=13 Tev

Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk

A measurement of the Higgs boson mass and width via its decay to two Z bosons is presented. Proton-proton collision data collected by the CMS experiment, corresponding to an integrated luminosity of 138 fb(-1) at a center-of-mass energy of 13 TeV, is used. ...

AMER PHYSICAL SOC2025

First observation of Λc(2595)+ → $ {\Lambda}_c^{+}{\pi}^0{\pi}^0 $ and Λc(2625)+ → $ {\Lambda}_c^{+}{\pi}^0{\pi}^0 $

Yunxuan Song

By analysing e + e − annihilation data corresponding to an integrated luminosity of 368.48 pb −1 collected at the centre-of-mass energies of

\sqrt{s}

= 4.918 and 4.951 GeV with the BESIII detector, we report the first observation of Λ c (2595)+ and Λ c ...

Springer2025

Search for a scalar or pseudoscalar dilepton resonance produced in association with a massive vector boson or top quark-antiquark pair in multilepton events at √s=13 TeV

Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk

A search for beyond the standard model spin-0 bosons, phi, that decay into pairs of electrons, muons, or tau leptons is presented. The search targets the associated production of such bosons with a W or Z gauge boson, or a top quark-antiquark pair, and use ...

AMER PHYSICAL SOC2024

Dark sector glueballs at the LHC

Timothy Cohen

We study confining dark sectors where the lightest hadrons are glueballs. Such models can provide viable dark matter candidates and appear in some neutral naturalness scenarios. In this work, we introduce a new phenomenological model of dark glueball hadro ...

Springer Nature2024

Search for Bc+→π+μ+μ- decays and measurement of the branching fraction ratio B(Bc+→ψ(2S)π+)/B(Bc+→J/ψπ+)

Olivier Schneider, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Sebastian Schulte, Donal Patrick Hill, Marie Theres Christin Bachmayer, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Surapat Ek-In, Aravindhan Venkateswaran, Renato Quagliani, Luis Miguel Garcia Martin, Vitalii Lisovskyi, Elisabeth Maria Niel, Federico Ronchetti, Radoslav Marchevski, Anni Matilda Kauniskangas, Dimitrios Kaminaris, Raphaël van Laak, Pierre Paul Louis Mayencourt, Brianna Leililani Thielen, Esteban Curras Rivera, Yifei Song

The first search for nonresonant Bc+→π+μ+μ- decays is reported. The analysis uses proton–proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9fb-1. No evidence for an excess of signal e ...

2024

The LHCb Upgrade I

Olivier Schneider, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Vladimir Macko, Sebastian Schulte, Donal Patrick Hill, Maria Vieites Diaz, Marie Theres Christin Bachmayer, Lino Ferreira Lopes, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Maria Elena Stramaglia, Surapat Ek-In, Aravindhan Venkateswaran, Ana Bárbara Rodrigues Cavalcante, Sara Celani, Plamen Hristov Hopchev, Renato Quagliani, Carina Trippl, Olivier Göran Girard, Elisabeth Maria Niel, Axel Kuonen, Maarten Willibrord Uriël Van Dijk, Brianna Leililani Thielen, Florian Bernard, Raymond Frei

The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all detectors into an al ...

2024

Search for flavor changing neutral current interactions of the top quark in final states with a photon and additional jets in proton-proton collisions at √s=13 TeV

Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk

A search for the production of a top quark in association with a photon and additional jets via flavor changing neutral current interactions is presented. The analysis uses proton-proton collision data recorded by the CMS detector at a center-of-mass energ ...

American Physical Society2024

Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN = 110 GeV

Lesya Shchutska

The interpretation of cosmic antiproton flux mea- surements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstel- lar medium. Using collisi ...

2023

Observation of New Ω 0 cStates Decaying to the Ξc plus K- Final State

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Michel De Cian, Vladimir Macko, Sebastian Schulte, Donal Patrick Hill, Maria Vieites Diaz, Marie Theres Christin Bachmayer, Lino Ferreira Lopes, Serhii Cholak, Veronica Sølund Kirsebom, Ettore Zaffaroni, Surapat Ek-In, Aravindhan Venkateswaran, Sara Celani, Renato Quagliani, Carina Trippl, Sonia Amina Bouchiba, Elisabeth Maria Niel, Maarten Willibrord Uriël Van Dijk, Maria Carolina Feliciano Faria

Two new excited states, S2c(3185)0 and S2c(3327)0, are observed in the E thorn c K- invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. Five previously observed e ...

Amer Physical Soc2023

EOS: a software for flavor physics phenomenology

Elena Graverini

EOS is an open-source software for a variety of computational tasks in flavor physics. Its use cases include theory predictions within and beyond the Standard Model of particle physics, Bayesian inference of theory parameters from experimental and theoreti ...

2022

Bootstrapping the a-anomaly in 4d QFTs

João Miguel Augusto Penedones Fernandes, Biswajit Sahoo, Jan Krzysztof Marucha

We study gapped 4d quantum field theories (QFTs) obtained from a relevant deformation of a UV conformal field theory (CFT). For simplicity, we assume the existence of a Z(2) symmetry and a single Z2-odd stable particle and no Z(2)-even particles at low ene ...

Springer Nature2022

Measurement of B(B-s -> DsX) with B-s semileptonic tagging

Olivier Schneider

We report the first direct measurement of the inclusive branching fraction B(B-s -> DsX) via B-s tagging in e(+)e(-) -> gamma(5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays B-s -> D(s)Xl nu, where X denotes unre ...

American Physical Society2022

Dark Energy Survey year 3 results: Constraints on cosmological parameters and galaxy-bias models from galaxy clustering and galaxy-galaxy lensing using the redMaGiC sample

Jonathan Andrew Blazek

We constrain cosmological parameters and galaxy-bias parameters using the combination of galaxy clustering and galaxy-galaxy lensing measurements from the Dark Energy Survey (DES) year-3 data. We describe our modeling framework and choice of scales analyze ...

American Physical Society2022

Dark Energy Survey Year 3 results: Cosmology with moments of weak lensing mass maps

Jonathan Andrew Blazek

We present a cosmological analysis using the second and third moments of the weak lensing mass (convergence) maps from the first three years of data (Y3) data of the Dark Energy Survey. The survey spans an effective area of 4139 square degrees and uses the ...

American Physical Society2022

A Kirchhoff-like theory for hard magnetic rods under geometrically nonlinear deformation in three dimensions

Pedro Miguel Nunes Pereira de Almeida Reis, Matteo Pezzulla

Magneto-rheological elastomers (MREs) are functional materials that can be actuated by applying an external magnetic field. MREs comprise a composite of hard magnetic particles dispersed into a nonmagnetic elastomeric (soft) matrix. Hard MREs have been rec ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Observation of a new baryon state in the Lambda(0)(b)pi(+)pi(-) mass spectrum

Jian Wang, Mingkui Wang, Olivier Schneider, Zhirui Xu, Yiming Li, Yi Zhang, Lei Zhang, Yi Wang, Aurelio Bay, Guido Haefeli, Jessica Prisciandaro, Tatsuya Nakada, Christoph Frei, Mark Tobin, Frédéric Blanc, Greig Alan Cowan, Maurizio Martinelli, Vladislav Balagura, Donal Patrick Hill, Liang Sun, François Fleuret, Mirco Dorigo, Liupan An, Renato Quagliani, Hang Yin, Maria Vieites Diaz, Aravindhan Venkateswaran, Elena Graverini, Michel De Cian, Vladimir Macko, Federico Leo Redi, Luis Miguel Garcia Martin, Sebastian Schulte, Tommaso Colombo, Vitalii Lisovskyi, Tara Nanut, Minh Tâm Tran, Violaine Bellée, Guillaume Max Pietrzyk, Pavol Stefko, Pietro Marino, Lino Ferreira Lopes, Matthieu Philippe Luther Marinangeli, Veronica Sølund Kirsebom, Maria Elena Stramaglia, Ana Bárbara Rodrigues Cavalcante, Guido Andreassi, Luca Pescatore, Preema Rennee Pais, Maxime Schubiger, Plamen Hristov Hopchev, Chitsanu Khurewathanakul, Thi Dung Nguyen, Olivier Göran Girard, Mâu Chung Nguyên, Axel Kuonen, Vincenzo Battista, Conor Thomas Fitzpatrick, Michael Thompson McCann

A new baryon state is observed in the Lambda(0)(b)pi(+)pi(-) mass spectrum with high significance using a data sample of pp collisions, collected with the LHCb detector at centre-of-mass energies root s = 7, 8 and 13 TeV, corresponding to an integrated lum ...

Springer Nature2020

Search for new physics in high-mass diphoton events from proton-proton collisions at √<i>s</i>=13 TeV

Graph Chatbot

Measurement of the Higgs Boson Mass and Width Using the Four-lepton Final State in Proton-proton Collisions at √s=13 Tev

Publisher Erratum: Long-lived particle reconstruction downstream of the LHCb magnet

First observation of Λc(2595)+ → $ {\Lambda}_c^{+}{\pi}^0{\pi}^0 $ and Λc(2625)+ → $ {\Lambda}_c^{+}{\pi}^0{\pi}^0 $

Search for a scalar or pseudoscalar dilepton resonance produced in association with a massive vector boson or top quark-antiquark pair in multilepton events at √s=13 TeV

Dark sector glueballs at the LHC

Search for Bc+→π+μ+μ- decays and measurement of the branching fraction ratio B(Bc+→ψ(2S)π+)/B(Bc+→J/ψπ+)

The LHCb Upgrade I

Search for flavor changing neutral current interactions of the top quark in final states with a photon and additional jets in proton-proton collisions at √s=13 TeV

Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN = 110 GeV

Observation of New Ω 0 cStates Decaying to the Ξc plus K- Final State

EOS: a software for flavor physics phenomenology

Bootstrapping the a-anomaly in 4d QFTs

Measurement of B(B-s -> DsX) with B-s semileptonic tagging

Dark Energy Survey year 3 results: Constraints on cosmological parameters and galaxy-bias models from galaxy clustering and galaxy-galaxy lensing using the redMaGiC sample

Dark Energy Survey Year 3 results: Cosmology with moments of weak lensing mass maps

A Kirchhoff-like theory for hard magnetic rods under geometrically nonlinear deformation in three dimensions

Observation of a new baryon state in the Lambda(0)(b)pi(+)pi(-) mass spectrum