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CERN LHCb Collaboration Captures Evidence of Ultra-Rare B Meson Decay

CERN LHCb Collaboration Captures Evidence of Ultra-Rare B Meson Decay

Physicists at the European Organization for Nuclear Research (CERN) have captured evidence of an extremely rare particle decay, specifically the decay of a 'Bd meson' into a 'muon' and an 'anti-muon'. This event is predicted to occur only once in 10 billion instances. The international Large Hadron Collider beauty (LHCb) collaboration announced this finding on November 3rd, with the research paper submitted to the international journal 'Physical Review X' after being posted on the preprint server 'arXiv' on October 30th. While this observation does not indicate new physics, it aligns with the predictions of the Standard Model of particle physics. The LHCb collaboration utilized data collected in 2024–2025, following an upgrade in 2022 that significantly increased the detector's data collection capacity. Machine learning was employed to analyze vast amounts of proton collision data to identify these rare decay candidates. The statistical significance of the Bd meson decay evidence is 3 sigma, increasing to ...
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Researchers Demonstrate Fundamental Space-Time Limit for Electrons, Advancing Future Electronic Devices

Researchers Demonstrate Fundamental Space-Time Limit for Electrons, Advancing Future Electronic Devices

An international team of researchers has experimentally demonstrated a fundamental limit to the precision with which an electron’s position and the time of its motion can be simultaneously determined. This work, involving groups from the Regensburg Center for Ultrafast Nanoscopy and the Max Planck Institute, utilized a laser system with high temporal resolution. In the experiment, electrons were directed from an ultrasharp metal tip to a silver surface, with their motion recorded through electric current and transfer time measured using two light pulses. The electrons exhibited quantum tunneling, behaving as quantum waves, with motion observed on attosecond timescales. Quantum simulations confirmed the experimental results, showing electrons responded to the light field with a delay of approximately 500 attoseconds. The study also revealed that increased precision in determining an electron's motion time requires more energy, causing the electron's wave packet to stretch spatially.
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Researchers Demonstrate Fundamental Space-Time Limit for Electrons

Researchers Demonstrate Fundamental Space-Time Limit for Electrons

An international team of researchers has experimentally confirmed a fundamental limit on the simultaneous precision with which an electron's position and the time of its motion can be determined. This work, involving groups from the Regensburg Center for Ultrafast Nanoscopy and the Max Planck Institute in Hamburg, utilized a laser system with high temporal resolution. In their experiment, precisely synchronized laser pulses directed electrons from an ultrasharp metal tip towards a silver surface, separated by several atomic diameters. The electron motion was recorded via electric current, and the transfer time was measured using two light pulses with a controlled interval. The electrons traversed an energy barrier through quantum tunneling, behaving as quantum waves. Measurements revealed motion on attosecond timescales, with electrons responding to the light field with a delay of approximately 500 attoseconds. The study also found that increasing the precision of time determination required more energy, c...
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Research Explores Nonlinear Propagation and Attenuation of Laser Beams in Plasma

Research Explores Nonlinear Propagation and Attenuation of Laser Beams in Plasma

A recent study investigates the nonlinear propagation and attenuation dynamics of finite Airy–Gaussian (AiG) laser beams within a non-relativistic, isotropic collisionless plasma that features an exponential density profile. The research employs the Wentzel–Kramers–Brillouin (WKB) approximation alongside the paraxial ray approximation. This methodology leads to a set of coupled differential equations that govern the transverse evolution of the beam's width. Numerical analysis conducted as part of the study indicates that the dimensionless adjustable density parameter significantly impacts the oscillatory behavior, self-focusing, defocusing, and attenuation characteristics of these AiG beams when interacting with non-uniform dense plasma. The findings suggest that a weaker plasma inhomogeneity can extend the propagation distance of the laser beams and alter the balance between defocusing and nonlinear self-focusing effects. This detailed examination provides insights into how laser beams behave in complex p...
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How Ernest Lawrence Invented the Cyclotron and Won a Nobel Prize

How Ernest Lawrence Invented the Cyclotron and Won a Nobel Prize

Ernest Orlando Lawrence, an American physicist, left an indelible mark on 20th-century science, most notably through his invention of the cyclotron...
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International Researchers Create Room-Temperature Quantum State, Advancing Practical Quantum Technology

International Researchers Create Room-Temperature Quantum State, Advancing Practical Quantum Technology

An international team of researchers has successfully engineered an exotic quantum state of matter that operates at room temperature, a significant departure from the extreme cooling typically required for such states. This breakthrough, detailed in Science Advances, involved creating a supersolid in an exciton-polariton Bose-Einstein condensate using a microcavity, a light-trapping structure. The setup is noted for its relative inexpensiveness and voltage controllability, capable of functioning at temperatures up to 60 °C (140 °F). This quantum state, which exhibits properties of both a superfluid and a solid with a crystal-like structure, was observed for fractions of a second, sufficient for the necessary observations. The research points towards more practical applications of quantum technology in advanced computing systems and sensors by simplifying the study of quantum behavior in superfluids and supersolids.
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Physicists Find Evidence of Rare Particle Decay After 42 Years of Search

Physicists Find Evidence of Rare Particle Decay After 42 Years of Search

After more than four decades of searching, physicists have found experimental evidence of an exceedingly rare and unstable particle decay, occurring only once in ten billion events. The LHCb Collaboration announced this discovery in a seminar on November 3rd and in a preprint paper, detailing the potential detection of a B d meson decaying into a muon and an anti-muon. This meson, composed of a beauty quark and a down antiquark, is incredibly fleeting, decaying in one and a half trillionths of a second. The experiment, conducted at the Large Hadron Collider Beauty (LHCb) at CERN, leveraged recent upgrades to boost particle collision detection rates and machine learning techniques to enhance the signal-to-noise ratio. This evidence, combining data from 2011-2018 and 2024-2025, achieved a significance level of 3.2 sigma, indicating a low probability of it being a fluke.
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Perimeter Institute Details Quantum Error Correction Breakthroughs Enabling Practical Quantum Computing

Perimeter Institute Details Quantum Error Correction Breakthroughs Enabling Practical Quantum Computing

The Perimeter Institute reports significant advancements in quantum error correction, moving quantum computing closer to practical application after three decades of incremental progress. Michele Mosca, a professor at the University of Waterloo’s Institute for Quantum Computing and a founding member of Perimeter, initially doubted the feasibility of quantum computing due to the inherent fragility of quantum systems and the difficulty of error correction. However, the emergence of viable error correction techniques marked a 'conceptual leap,' shifting the field from impossible to almost impossible. Unlike classical bits, qubits exist in a superposition of states, making them highly susceptible to environmental noise. Quantum error correction methods address this by detecting errors without directly observing the qubit's state, which would destroy its superposition. Researchers use the Bloch sphere to visualize qubit states and identify errors by recognizing shifts into different subspaces, rather than simpl...
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American Fusion Company Proposes Gold Production from Mercury Using Nuclear Fusion

American Fusion Company Proposes Gold Production from Mercury Using Nuclear Fusion

American Fusion Company Proposes Gold Production from Mercury Using Nuclear Fusion
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Physicist Hongsheng Zhang's Research Suggests Time Travel to the Past is Impossible in Most Theoretical Universes

Physicist Hongsheng Zhang's Research Suggests Time Travel to the Past is Impossible in Most Theoretical Universes

Hongsheng Zhang, a physicist at the University of Jinan in China, has presented research indicating that traveling into one's own past is impossible in a broad class of theoretical universes. The core of his argument rests on the principle that in relativity, the direction of light can never be at right angles to an object's direction through time. This implies that anything moving slower or faster than light must traverse spacetime in a consistent direction, akin to climbing a staircase without the ability to descend. This research, which is currently awaiting peer review, suggests that the concept of 'closed timelike curves'—journeys through spacetime that loop back to their origin—are generally not feasible. Zhang's findings do not rely on exotic matter, quantum effects, or specific assumptions about the universe's composition, focusing instead on the fundamental directions within spacetime.
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Tel Aviv and Stanford Researchers Develop AI Self-Teaching Method Without Human Data

Tel Aviv and Stanford Researchers Develop AI Self-Teaching Method Without Human Data

Researchers from Tel Aviv University (TAU) and Stanford University have developed a novel artificial intelligence training method that enables AI systems to learn and enhance their predictive capabilities without relying on human-generated content or external datasets. This new approach, announced by TAU, allows AI models to teach each other. Unlike conventional AI training, which typically requires vast amounts of existing information, this method permits models to build predictive skills before encountering real-world material. The researchers tested this concept by creating a training system with two AI models: one generated sequences of symbols, and the other predicted the next symbol. The training material was generated internally within the system, eliminating the need for external sources like written documents or photographs. As the exercises progressed, the generating model became more sophisticated at creating challenges, while the predicting model improved its abilities by solving these increasi...
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BMO Senior Manager Leads Fraud Analytics and Solutions Implementation to Combat Financial Crime

BMO Senior Manager Leads Fraud Analytics and Solutions Implementation to Combat Financial Crime

BMO Senior Manager Leads Fraud Analytics and Solutions Implementation to Combat Financial Crime