Claudio Dib
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View article: Searching for long-lived light neutralinos from B-meson decays with baryonic R-parity violation at Belle II
Searching for long-lived light neutralinos from B-meson decays with baryonic R-parity violation at Belle II Open
A bstract In a supersymmetry scenario with R-parity violation (RPV), neutralinos with GeV-scale mass, which are necessarily bino-like, are allowed by all constraints and can be produced in association with a baryon in B -meson decays via c…
View article: Searching for long-lived light neutralinos from $B$-meson decays with baryonic R-parity violation at Belle II
Searching for long-lived light neutralinos from $B$-meson decays with baryonic R-parity violation at Belle II Open
In a supersymmetry scenario with R-parity violation (RPV), neutralinos with GeV-scale mass, which are necessarily bino-like, are allowed by all constraints and can be produced in association with a baryon in $B$-meson decays via certain $\…
View article: Science Prospects for the Southern Wide-field Gamma-ray Observatory: SWGO
Science Prospects for the Southern Wide-field Gamma-ray Observatory: SWGO Open
Ground-based gamma-ray astronomy is now well established as a key observational approach to address critical topics at the frontiers of astroparticle physics and high-energy astrophysics. Whilst the field of TeV astronomy was once dominate…
View article: Spontaneous symmetry breaking and panic escape
Spontaneous symmetry breaking and panic escape Open
Panic-induced herding in individuals often leads to social disasters, resulting in people being trapped and trampled in crowd stampedes triggered by panic. We introduce a novel approach that offers fresh insights into studying the phenomen…
View article: Spontaneous symmetry breaking and panic escape
Spontaneous symmetry breaking and panic escape Open
Panic-induced herding in individuals often leads to social disasters, resulting in people being trapped and trampled in crowd stampedes triggered by panic. We introduce a novel approach that offers fresh insights into studying the phenomen…
View article: Heavy-hadron production based on kt-factorization with scale-dependent fragmentation functions
Heavy-hadron production based on kt-factorization with scale-dependent fragmentation functions Open
A bstract We present a comprehensive study of heavy-hadron production, including D and B mesons, heavy baryons, and the B c meson. Our calculations are based on the k t -factorization and scale-dependent fragmentation functions, completing…
View article: Heavy-hadron production based on $k_t$-factorization with scale-dependent fragmentation functions
Heavy-hadron production based on $k_t$-factorization with scale-dependent fragmentation functions Open
We present a comprehensive study of heavy-hadron production, including $D$ and $B$ mesons, heavy baryons, and the $B_c$ meson. Our calculations are based on the $k_t$-factorization and scale-dependent fragmentation functions, completing th…
View article: A common framework for fermion mass hierarchy, leptogenesis and dark matter
A common framework for fermion mass hierarchy, leptogenesis and dark matter Open
A bstract In this work, we explore an extension of the Standard Model designed to elucidate the fermion mass hierarchy, account for the dark matter relic abundance, and explain the observed matter-antimatter asymmetry in the universe. Beyo…
View article: A common framework for fermion mass hierarchy, leptogenesis and dark matter
A common framework for fermion mass hierarchy, leptogenesis and dark matter Open
In this work, we explore an extension of the Standard Model designed to elucidate the fermion mass hierarchy, account for the dark matter relic abundance, and explain the observed matter-antimatter asymmetry in the universe. Beyond the Sta…
View article: Toward a search for axionlike particles at the LNLS
Toward a search for axionlike particles at the LNLS Open
Axionlike particles (ALPs) appear in several dark sector studies. They have gained increasing attention from the theoretical and experimental community. In this work, we propose the first search for ALPs to be conducted at the Brazilian Sy…
View article: High Energy Physics in Africa, Latin America and other developing regions
High Energy Physics in Africa, Latin America and other developing regions Open
We summarize the current status of high energy physics (HEP) in Africa, Latin America, and other developing regions
View article: Simulation of PeV atmospheric showers for SWGO
Simulation of PeV atmospheric showers for SWGO Open
The recent discovery of PeV gamma-ray emission especially from the LHAASO observatory, located in the Northern hemisphere, boosted the relevance of observing the Southern sky at such
\nenergies. SWGO (SouthernWide-Field Gamma-Ray Observato…
View article: The Mercedes water Cherenkov detector: a multi-PMT shallow tank design proposal for ground-based gamma-ray observatories
The Mercedes water Cherenkov detector: a multi-PMT shallow tank design proposal for ground-based gamma-ray observatories Open
We present the concept of a shallow, single-layer, multi-PMT water Cherenkov detector (WCD) unit for ground-based gamma-ray astronomy. The design was developed as part of the R&D activities for SWGO, as a candidate WCD unit solution for th…
View article: $S_b$ for gamma/hadron separation in SWGO
$S_b$ for gamma/hadron separation in SWGO Open
The Southern Wide-field Gamma-ray Observatory (SWGO) is an international collaboration working on a ground-based gamma-ray observatory that will be located in the southern hemisphere. A crucial step in the analysis is to identify the showe…
View article: Estimating the potential of SWGO to measure the composition-dependent behaviour of the CR anisotropy
Estimating the potential of SWGO to measure the composition-dependent behaviour of the CR anisotropy Open
Current cosmic ray anisotropy experiments have shown a significant swing in both the direction and the amplitude of the dipole at energies around tens of TeV. Due to the charged nature of these particles, and the presence of magnetic field…
View article: An update on site search activities for SWGO
An update on site search activities for SWGO Open
The Southern Wide-field Gamma-ray Observatory (SWGO) is a project by scientists and engineers from 14 countries and 78 institutions to design and build the first wide-field, ground-based gamma-ray observatory in the Southern Hemisphere, wi…
View article: Dark Matter searches in Dwarf Galaxies with the Southern Wide-field Gamma-ray Observatory
Dark Matter searches in Dwarf Galaxies with the Southern Wide-field Gamma-ray Observatory Open
Dark matter is thought to make up most of the matter density of the Universe, yet its true nature remains uncertain. Among dark matter theories, Weakly Interacting Massive Particles (WIMPs) are a prominent candidate for dark matter because…
View article: Status of the SWGO air shower reconstruction using a template-based likelihood method
Status of the SWGO air shower reconstruction using a template-based likelihood method Open
The Southern Wide-field Gamma-ray Observatory (SWGO) is a proposed facility for ground-based gamma-ray astronomy. It will consist of an array of water Cherenkov detectors to detect astrophysical gamma-rays mainly in the range of hundreds o…
View article: Manufacture Details of a SWGO Double-Layer Tank Design - Water Cherenkov Detector Prototype
Manufacture Details of a SWGO Double-Layer Tank Design - Water Cherenkov Detector Prototype Open
Water-Cherenkov detectors (WCD) have been manufactured in Australia by the company AQUAMATE as part of the R&D activities for SWGO. They consist of a steel tank frame with a bladder on its interior satisfying the SWGO double-layer tank des…
View article: Wavelength-shifting light traps for SWGO and other applications
Wavelength-shifting light traps for SWGO and other applications Open
Wavelength-shifting (WLS) materials contain molecules that absorb light and\nreemit at longer wavelengths. They can be used for light detection because they\nprovide a large effective area for low cost and they are able to efficiently\ntra…
View article: Low-cost Oceanographic Buoy for Evaluating the Mechanical Resistance of a Water Cherenkov Detector to be deployed on a high-altitude Natural Lake in Peru.
Low-cost Oceanographic Buoy for Evaluating the Mechanical Resistance of a Water Cherenkov Detector to be deployed on a high-altitude Natural Lake in Peru. Open
The SWGO Collaboration is evaluating the possibility of deploying Water Cherenkov Detectors (WCD) in a high-altitude natural lake. For that, the first challenge is to build a bladder strong enough that could be used as a WCD inside a natur…
View article: The $b$ quark fragmentation fractions at LHCb and meson decays with heavy quark spectators
The $b$ quark fragmentation fractions at LHCb and meson decays with heavy quark spectators Open
We study the current estimates of $B_c\to B_s π$ to extract the fragmentation fraction $f_c/f_s$ at the LHCb. A rather robust estimate of $Br(B_c\to B_s π)$ based on factorization and lattice results for the form factor gives $f_c/f_s \sim…
View article: Toward a search for axion-like particles at the LNLS
Toward a search for axion-like particles at the LNLS Open
Axion-Like Particles (ALPs) appear in several dark sector studies. They have gained increasing attention from the theoretical and experimental community. In this work, we propose the first search for ALPs to be conducted at the Brazilian S…
View article: Probing R-parity violation in B-meson decays to a baryon and a light neutralino
Probing R-parity violation in B-meson decays to a baryon and a light neutralino Open
A bstract We propose a search for B meson decays to a baryon plus missing energy at the Belle II experiment to probe supersymmetry with a GeV-scale lightest neutralino $$ {\overset{\sim }{\chi}}_1^0 $$ and R -parity violation (RPV).…
View article: Probing $R$-parity violation in $B$-meson decays to a baryon and a light neutralino
Probing $R$-parity violation in $B$-meson decays to a baryon and a light neutralino Open
We propose a search for $B$ meson decays to a baryon plus missing energy at the Belle II experiment to probe supersymmetry with a GeV-scale lightest neutralino ${\tildeχ_1^0}$ and $R$-parity violation (RPV). We perform analytic computation…
View article: Why should the U.S. care about high energy physics in Africa and Latin America?
Why should the U.S. care about high energy physics in Africa and Latin America? Open
Research, education and training in high energy physics (HEP) often draw international collaborations even when priorities and long term visions are defined regionally or nationally. Yet in many developing regions, HEP activities are limit…
View article: Track reconstruction and matching between emulsion and silicon pixel detectors for the SHiP-charm experiment
Track reconstruction and matching between emulsion and silicon pixel detectors for the SHiP-charm experiment Open
In July 2018 an optimization run for the proposed charm cross section measurement for SHiP was performed at the CERN SPS. A heavy, moving target instrumented with nuclear emulsion films followed by a silicon pixel tracker was installed in …