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

Publications associées (11)

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

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

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

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

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

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

Results are presented from a search for new physics in high-mass diphoton events from proton-proton collisions at root s = 13TeV. The data set was collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb ...

SPRINGER2024

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

Utilizing parametric instabilities to diagnose edge density fluctuations in TCV

Stefano Coda, Umesh Kumar

Two-plasmon decay instabilities (TPDIs) are a class of parametric instabilities where a gyrotron beam, polarized in X-mode, decays nonlinearly into two upper hybrid waves at approximately half frequency. Here, we present the design of a simple radiometer t ...

2024

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

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

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

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

Graph Chatbot

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

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

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

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

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

Dark sector glueballs at the LHC

Utilizing parametric instabilities to diagnose edge density fluctuations in TCV

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

EOS: a software for flavor physics phenomenology

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

Study of B-s(0) -> J/psi pi(+)pi-K+K- decays (vol 2, 024, 2021)