Publications associées à Search for A ' -> mu(+)mu(-) Decays

Publications associées (53)

Search for Long-Lived Heavy Neutral Leptons with Muons at the CMS Experiment and Characterisation of Scintillating Fibre Trackers

This PhD thesis presents a search for Heavy Neutral Leptons (HNLs) using data collected by the CMS experiment at the CERN Large Hadron Collider (LHC). HNLs are hypothetical new particles proposed in several theoretical extensions of the Standard Model (SM) ...

EPFL2025

Lepton flavour universality tests and lepton flavour violation searches at LHCb

Sara Celani

The Standard Model (SM) of particle physics represents our most fundamental knowledge of elementary particles and their interactions. One of the cardinal properties of the SM which has been thoroughly studied during the past years is the so-called Lepton F ...

Stichting SciPost2025

Characterization of tire and road wear particles in experimental biota samples

Florian Frédéric Vincent Breider, Benoît Jean Dominique Ferrari, Thibault Béranger Masset

There is a growing interest in the development of reliable analytical methods for characterizing tire and road wear particles (TRWP). The current research extends the use of single particle analysis techniques to various experimental biota samples. TRWP an ...

Nature Research2025

Updated model-independent measurement of the strong-phase differences between D0 and $ {\overline{\textrm{D}}}^0\to {\textrm{K}}_{\textrm{S}/\textrm{L}}^0{\uppi}^{+}{\uppi}^{-} $ decays

Yunxuan Song

The strong-phase differences between

{D}^0\to {K}_{S(L)}^0{\pi}^{+}{\pi}^{-}

and

{\overline{D}}^0\to {K}_{S(L)}^0{\pi}^{+}{\pi}^{-}

decays are one of the most important inputs in measuring the CP violating angle γ via B − → DK − decays. They also p ...

Springer2025

Search for the FCNC charmonium decay J/ψ → D0μ+μ− + c.c

Yunxuan Song

Based on a data sample of (10087 ± 44) × 10 6 J / ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J / ψ → D 0 μ + μ − + c.c. . No significant signal above the background is observed, and the upper ...

Springer2025

Search for excited tau leptons in the ττγ final state in proton-proton collisions at = 13 TeV

Paul Théodore Gabriel Pablo De Bryas Dexmiers d'Archiac, Anna Mascellani, Joanna Malgorzata Wanczyk, Jan Steggemann, Konstantin Androsov

Results are presented for a test of the compositeness of the heaviest charged lepton, τ, using data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC. The data were collected in 2016–2018 and c ...

Springer2025

Search for Nuclear Modifications of (Formula presented) Meson Production in (Formula presented)-Pb Collisions at (Formula presented)

Paul Théodore Gabriel Pablo De Bryas Dexmiers d'Archiac, Anna Mascellani, Joanna Malgorzata Wanczyk, Jan Steggemann, Konstantin Androsov

Nuclear medium effects on (Formula presented) meson production are studied using the binary-collision scaled cross section ratio between events of different charged-particle multiplicities from proton-lead collisions. Data, collected by the CMS experiment ...

American Physical Society (APS)2025

DESI 2024 III: baryon acoustic oscillations from galaxies and quasars

Jiaxi Yu, Daniel Felipe Forero Sanchez, Antoine Philippe Jacques Rocher, Rafaela Gsponer

We present the DESI 2024 galaxy and quasar baryon acoustic oscillations (BAO) measurements using over 5.7 million unique galaxy and quasar redshifts in the range 0.1 < z < 2.1. Divided by tracer type, we utilize 300,017 galaxies from the magnitude-limited ...

2025

Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument

Eduardo Sanchez, Zhifeng Ding, Sun Hee Kim, Hua Zhang, Stewart Cole, Jiangyan Yang, Jean-Paul Richard Kneib, Anand Stéphane Raichoor, Andrei Variu, Daniel Felipe Forero Sanchez, Cheng Zhao, Arjun Dey, David Schlegel, Zheng Zheng, Xin Chen, Antoine Philippe Jacques Rocher

The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg(2) over 5 yr to constrain the cosmic expansion history through precise measurements of baryon acoustic oscillations (BAO). The scientific program for DESI ...

Iop Publishing Ltd2024

An upper pressure limit for low-Z benign termination of runaway electron beams in TCV

Basil Duval, Holger Reimerdes, Stefano Coda, Joan Decker, Umar Sheikh, Claudia Colandrea, Benjamin Alexandre Vincent, Luke Simons, Marta Mariarmanda Pedrini, Martim Zurita

We present a model for the particle balance in the post-disruption runaway electron plateau phase of a tokamak discharge. The model is constructed with the help of, and applied to, experimental data from TCV discharges investigating the so-called 'low-Z be ...

IOP Publishing Ltd2025

Charge-Transfer States in Organic Nanowires

Lucile Annie Chassat

Charge separation processes in organic semiconductors play a pivotal role in diverse applications ranging from photovoltaics to photocatalysis. Understanding these mechanisms, particularly the role of hybrid charge-transfer (CT) states, is essential for ad ...

EPFL2024

Euclid II. The VIS instrument

Georges Meylan, Frédéric Courbin

This paper presents the specification, design, and development of the Visible Camera (VIS) on the European Space Agency’s Euclid mission. VIS is a large optical-band imager with a field of view of 0.54 deg2 sampled at 000 . 1 with an array of 609 Megapixel ...

2025

Distinct origins of environmentally quenched galaxies in the core and outer virialised regions of massive clusters at 0.8 &lt; z &lt; 1.5

Yannick Michael Bahé

High-redshift (

z

∼ 1) galaxy clusters are the domain where environmental quenching mechanisms are expected to emerge as important factors in the evolution of the quiescent galaxy population. Uncovering these initially subtle effects requires exploring mu ...

Oxford University Press (OUP)2025

Euclid preparation XXXVI. Modelling the weak lensing angular power spectrum

Georges Meylan, Frédéric Courbin, Maurizio Martinelli, Gianluca Castignani, Austin Chandler Peel

This work considers which higher order modeling e ffects on the cosmic shear angular power spectra must be taken into account for Euclid. We identified the relevant terms and quantified their individual and cumulative impact on the cosmological parameter i ...

Edp Sciences S A2024

The AGORA High-resolution Galaxy Simulations Comparison Project. V. Satellite Galaxy Populations in a Cosmological Zoom-in Simulation of a Milky Way-Mass Halo

Yves Revaz, Loïc Hausammann

We analyze and compare the satellite halo populations at z similar to 2 in the high-resolution cosmological zoom-in simulations of a 1012 M circle dot target halo (z = 0 mass) carried out on eight widely used astrophysical simulation codes (Art-I, Enzo, Ra ...

Iop Publishing Ltd2024

Search for the lepton flavour violating decays B0→e±μ∓ and B0s→e±μ∓ with LHCb Run 2 data

Sebastian Schulte

A large variety of new physics models suggest that the rates for lepton flavour violating

b

-hadron decays may be much higher than predicted in the Standard Model, which leads to a high interest in the search for such decays. This thesis presents the se ...

EPFL2024

Search for long-lived particles using displaced vertices and missing transverse momentum in proton-proton collisions at √s=13 TeV

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

A search for the production of long-lived particles in proton- proton collisions at a center-of-mass energy of 13 TeVat the CERN LHC is presented. The search is based on data collected by the CMS experiment in 2016-2018, corresponding to a total integrated ...

American Physical Society2024

CURLING - I. The influence of point-like image approximation on the outcomes of cluster strong lens modelling

Nan Li, Jean-Paul Richard Kneib, Huanyuan Shan

Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex parameter space, pixelized strong lens modelling in galaxy clusters is computationally expensive, ...

Oxford Univ Press2024

Search for long-lived particles decaying to final states with a pair of muons in proton-proton collisions at √s=13.6 TeV

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

An inclusive search for long-lived exotic particles (LLPs) decaying to final states with a pair of muons is presented. The search uses data corresponding to an integrated luminosity of 36.6 fb(-1) collected by the CMS experiment from the proton-proton coll ...

Springer Nature2024

On the origin of globular clusters in a hierarchical universe

Michaela Hirschmann

We present an end-to-end description of the formation of globular clusters (GCs) combining a treatment for their formation and dynamical evolution within galaxy haloes with a state-of-the-art semi-analytic simulation of galaxy formation. Our approach allow ...

2024