Universidade de São Paulo

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19912026

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259 papers · 1 filter

astro-ph.SR2025

A closer look at the young stellar group around Sh 2-295

João Victor Corrêa-Rodrigues, Jane Gregorio-Hetem

Star formation is governed by multiple physical processes, making it inherently complicated. One excellent example is the Canis Major OB1/R1 Association, whose complex history of s…

cond-mat.mtrl-sci2025

Engineering a Correlated Narrow-Gap Semiconductor: Effects of Ga Substitution in EuZn $_{2}$ P $_{2}$

M. Dutra, E. Marulanda, G. G. Vasques +11

The effect of Ga substitution on the electronic, magnetic, and low-energy responses of the Zintl phase EuZn $_{2}$ P $_{2}$ is investigated by electrical transport, electron spin resonanc…

hep-th2025

On the physical running of the electric charge in a dimensionless theory of gravity

M. Gomes, A. C. Lehum, A. J. da Silva

We revisit the renormalization of the gauge coupling in massless QED coupled to a scaleless quadratic theory of gravity. We compare two alternative prescriptions for the running of…

astro-ph.HE2025★ 4 cited

Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations

Saurabh, Hendrik Müller, Sebastiano D. von Fellenberg +282

We investigate the presence and spatial characteristics of the jet base emission in M87* at 230 GHz, enabled by the enhanced uv coverage in the 2021 Event Horizon Telescope (EHT) o…

hep-ph2025

$D^{*} π$ interaction from the lineshape of $D_{1} (2420)$ in $B$ -decays

Pedro Brandão, Breno Agatão, Luciano M. Abreu +2

We present a model calculation to reproduce the differential mass distribution for the $D^{*} π$ system in the reactions $B^{-} \to D^{*+} π^{-} π^{-}$ and $B^{+} \to D_{s}^{+} D^{*-} π^{+}$ analy…

astro-ph.GA2025

The contribution of the color space in LSST-like photometry for the selection of extragalactic globular cluster candidates

Nicholas Schweder-Souza, Ana L. Chies-Santos, Rafael S. de Souza +16

Globular clusters (GCs) are excellent tracers of their host galaxies' evolutionary histories. Traditional methods for identifying GCs in galaxies rely on cuts over photometric cata…