Publications related to Search for Leptonic Decays of Dark Photons at NA62

Related publications (10)

Search for the Lepton Number Violation Decay Φ → Π+π+e-e- Via j/ψ → Φη

Using an electron-positron collision data sample corresponding to (1.0087 +/- 0.0044) x 10(10) J/psi events collected using the BESIII detector at the BEPCII collider, we firstly search for the lepton number violation decay phi -> pi(+)pi(+)e(-)e(-) via J/ ...

IOP Publishing Ltd2025

Search for Hadronic Decays of Feebly-interacting Particles at Na62

Radoslav Marchevski, Alina Kleimenova, Xiafei Chang

The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produc ...

SPRINGER2025

Observation of ηc (1 S,2 S) and χcJ decays to 2 (π+π-)η via ψ (3686) radiative transitions

Yunxuan Song

Based on (2712.4±14.1)×106 ψ(3686) decays collected with the BESIII detector, we have observed, for the first time, the hadronic decays of S- and P-wave charmonium states into 2(π+π-)η via radiative transitions from ψ(3686). The branching fraction of the d ...

2025

Ultrafast momentum-resolved visualization of the interplay between phonon-mediated scattering and plasmons in graphite

Rémi Marcel Léon Claude, Fabrizio Carbone, Thomas La Grange, Ivan Madan, Michele Puppin, Francesco Barantani, Alexey Sapozhnik, Bruce Michael Raleigh Weaver

Scattering between charges and collective modes in materials governs phenomena such as electrical resistance, energy dissipation, and phase switching. Studying such scattering requires simultaneous access to ultrafast and momentum-resolved dynamics of sing ...

2025

Measurement of the T(t)over-barh and Th Production Rates in the H →b(b)over-bar Decay Channel Using Proton-proton Collision Data at √s=13 Tev

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

An analysis of the production of a Higgs boson (H) in association with a top quark-antiquark pair (t (t) over barH) or a single top quark (tH) is presented. The Higgs boson decay into a bottom quark-antiquark pair (H -> b (b) over bar) is targeted, and thr ...

SPRINGER2025

Weyl-invariant Einstein-Cartan gravity: unifying the strong CP and hierarchy puzzles

Mikhail Chapochnikov

We show that the minimal Weyl-invariant Einstein-Cartan gravity in combination with the Standard Model of particle physics contains just one extra scalar degree of freedom (in addition to the graviton and the Standard Model fields) with the properties of a ...

Springer Nature2024

Test of lepton flavor universality in B± → K± μ+μ- and B± → K± e+ e- decays in proton-proton collisions at √s=13 TeV

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

A test of lepton flavor universality in B-+/- -> K +/- mu(+) mu(-) and B-+/- -> (K)+/- e(+) e(-) decays, as well as a measurement of differential and integrated branching fractions of a nonresonant B-+/- -> K-+/- mu(+)mu(-) decay are presented. The analysi ...

IOP Publishing Ltd2024

Search for Higgs boson pair production with one associated vector boson in proton-proton collisions at √s=13 TeV

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

A search for Higgs boson pair (HH) production in association with a vector boson V (W or Z boson) is presented. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, correspond ...

SPRINGER2024

Euclid preparation: XXXIX. The effect of baryons on the halo mass function

Frédéric Courbin, Georges Meylan

Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved.The Euclid photometric survey of galaxy clusters stands as a powerful cosmological tool, with the capacity to significantly propel our understand ...

2024

Exploiting the diversity of modeling methods to probe systematic biases in strong lensing analyses

Aymeric Alexandre Galan

Challenges inherent to high-resolution and high signal-to-noise data as well as model degeneracies can cause systematic biases in analyses of strong lens systems. In the past decade, the number of lens modeling methods has significantly increased, from pur ...

EDP SCIENCES S A2024