Journal Article

We present a comprehensive study of Higgs boson production associated with a neutrino pair at e+e- colliders (e+e-→hνν¯) at next-to-leading-order accuracy in both the standard model and the two-Higgs-doublet model. We show that these new physics effects will be observable in total and differential cross sections when compared with theoretical predictions that include electroweak corrections, even in the Higgs alignment limit. [...]

The measurement of the Higgs boson self-coupling is crucial for our understanding of the nature of electroweak symmetry breaking and potential physics beyond the Standard Model (BSM). In this work, we study in the framework of the 2-Higgs-Doublet Model (2HDM) the impact of one-loop corrections to triple Higgs couplings (THCs) on the pair production of two Standard Model (SM)-like Higgs bosons h at future high-energy e$^{+}$e$^{−}$ colliders, focusing on the e$^{+}$e$^{−}$ → Zhh process. [...]

We study the marginal deformation of the symmetric-product orbifold theory Sym$_N(T^4)$ which corresponds to introducing a small amount of Ramond–Ramond flux into the dual $AdS_3\times S^3\times T^4$ background. Already at first order in perturbation theory, the dimension of certain single-cycle operators is corrected, indicating that wrapping corrections from integrability must come into play earlier than expected. [...]

Ultralight particles, with a mass below the electronvolt scale, exhibit wave-like behavior and have arisen as a compelling dark matter candidate. A particularly intriguing subclass is scalar dark matter, which induces variations in fundamental physical constants. [...]

A key feature of the, so far only theoretically described, family of sp2 carbon allotropes called schwarzites is the negatively curved topology, which is introduced by the incorporation of heptagonal (or octagonal) rings in a graphene-type lattice. We have constructed a cut-out of this material with a unique pattern of four heptagonal rings arranged in a row by Pd-catalyzed [4 + 3] and [5 + 2] annulation and characterized it thoroughly. [...]

Structural heterogeneity is an inherent feature that occurs practically in all cast materials. In this work, wedemonstrated that the chemical heterogeneity resulting from the SHS reaction of TiC formation in the aluminumAl1000 alloy bath can enhance the strength by refining the matrix grains in in-situ cast TiC/Al1000 composites.Using advanced characterization techniques including X-Ray synchrotron radiation diffraction, (S)TEM-HREMand SEM-EBSD studies, we identified two types of aluminum solid solutions within the dendritic grains of theAl1000 matrix, distinguished by different lattice parameters. [...]

The first observation of single top quark production in association with a W and a Z boson in proton-proton collisions is reported. The analysis uses data at center-of-mass energies of 13 and 13.6 TeV recorded with the CMS detector at the CERN LHC, corresponding to a total integrated luminosity of 200 fb-1. [...]