Search for the charmless baryonic decay B+→Λ¯pp¯p is performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 5.4fb−1. The branching fraction is measured to be B(B+→Λ¯pp¯p)=(2.08±0.34±0.10±0.26)×10−7, where the first uncertainty is statistical, the second is systematic, and the third arises from the normalization channel. The CP asymmetry is measured to be ACP=(5.4±15.6±2.4)%, where the uncertainties are statistical and systematic. The background-subtracted invariant mass distributions of baryon-antibaryon pairs exhibit pronounced enhancements at both kinematic thresholds.

CERN technologies: from fundamental research to our everyday lives. Since 1954, the world-class research performed at CERN helps uncover what the universe is made of and how it works: here, scientists from all over the world study elementary particles – invisible to the eye – through complex and often gigantic instruments.

CERN technologies: from fundamental research to our everyday lives. Since 1954, the world-class research performed at CERN helps uncover what the universe is made of and how it works: here, scientists from all over the world study elementary particles – invisible to the eye – through complex and often gigantic instruments.

At CERN, we probe the fundamental structure of particles that make up everything around us. We do so using the world’s largest and most complex scientific instruments. This visual exhibition focuses mainly on photos, offers visitors the opportunity to explore CERN through 18 posters.

At CERN, we probe the fundamental structure of particles that make up everything around us. We do so using the world’s largest and most complex scientific instruments. This visual exhibition focuses mainly on photos, offers visitors the opportunity to explore CERN through 20 posters.

At CERN, we probe the fundamental structure of particles that make up everything around us. We do so using the world’s largest and most complex scientific instruments. This visual exhibition focuses mainly on photos, offers visitors the opportunity to explore CERN through 20 posters.

HRMT-60 - RaDIATE Material Studies Nicht eingeplant 3h CERN Poster Cocktail - Poster session Beschreibung HRMT-60 experiment was performed at the CERN-HiRadMat facility in October 2022 to understand thermal shock response of conventional materials and novel materials to support the design and operation of future multi-MW accelerator beam windows and secondary particle-production targets. This experiment, organized within the framework of the RaDIATE collaboration, builds on the previous HRMT-43 (BeGrid2) experiment, where a variety of materials in both non-irradiated and previously proton-irradiated conditions were tested. The primary goal was to understand the failure mechanisms, limits and flow behavior of the various material specimens, as well as compare and contrast the thermal shock response of previously irradiated materials to their non-irradiated counterparts. A total of 120 samples were tested at different beam conditions. This poster will present the preliminary results of several materials tested during this experiments.

In the SPS, reliable monitoring of the transverse beam position across the wide range of different beam structures and intensities is essential for the stable and efficient operation of the complex system of machines, facilities and experiments that receive beam. The current calibration method of the Beam Position Monitors (BPMs), using polynomial fit, suffers from systematic errors in the position measurements, which increase significantly for off-centered beams. These errors can lead to reduced control of the extraction angle and compromise the stability of the delivered beam in facilities like HiRadMat. The goal of this study is to develop a machine learning-based calibration method that will allow us to more accurately map the response of the BPM electronics, minimize the systematic errors and improve the precision of beam position measurements, and thus the beam delivery reproducibility, while containing algorithm complexity, in the SPS complex, and beyond

The differences in hadron chemistry observed at e+e- machines versus hadron colliders may indicate that the mechanisms by which partons evolve into visible matter are not universal. In particular, the presence of many other quarks produced in the underlying event may affect the hadronization process. With full particle ID, precision vertexing, and a high rate DAQ, the LHCb experiment is uniquely well suited to study the hadronization of heavy quarks. New results will be discussed in this contribution, including progress on studies of charm baryon enhancement in collisions.