In a 2021 analysis of the same B + → J/ ψφ K + decay mode including LHC Run 2 data, LHCb reported two more neutral states, χ c1 (4685) and X(4630), that do not correspond to cc states expected from ...

How did winning a Special Breakthrough Prize last year compare with the Nobel Prize? Deep mind Steven Weinberg is director of the theory research group, University of Texas at Austin. Credit: M ...

LHC physics Effective field theory enables a deeper understanding of complex physics processes at the LHC, such as the above production of Higgs bosons in ATLAS. Credit: ATLAS-CONF-2022-032.

Clocking gravity Artist’s interpretation of an array of pulsars (spinning neutron stars that emit radio waves) being affected by a gravitational wave produced by a supermassive black-hole binary in a ...

With just 5% of its ultimate dataset collected so far, the LHC’s vast and unique physics programme has already transformed and enriched our understanding of elementary particles, writes Michelangelo ...

Testing CP symmetry. The three neutrino mass eigenstates mix to make electron, muon and tau neutrinos according to the Pontecorvo– Maki–Nakagawa–Sakata (PMNS) matrix, which describes three rotations ...

In the summer of 1968, while a visitor in CERN’s theory division, Gabriele Veneziano wrote a paper titled “Construction of a crossing-symmetric, Regge behaved amplitude for linearly-rising ...

Rising to the moment . Freewheelin’ Artist’s illustration of muons interacting with a magnetic field. Credit: M. Rayner / CERN. In the Standard Model, the magnetic moment of the muon is computed order ...

Misfits Massive neutrinos are not part of the Standard Model. Credit: Symmetry After all these years, neutrinos remain extraordinary – and somewhat deceptive. The experimental success of the ...

Structural integrity The new Super Proton Synchrotron internal beam dump being installed inside its shielding in October 2020. Credit: J Ordan/CERN-PHOTO-202010-134-24. Imagine standing in the LHC ...

Accelerators on a chip Forty long and thin mesas increase in length from 100 to 500 μm on a silicon chip the size of a cent coin. Each mesa supports a micron-wide dual colonnade of silicon pillars ...

ALICE in action. High multiplicity Lead–ion collisions can generate thousands of hadrons. Credit: ALICE. The geometrical overlap between the two colliding nuclei varies from head-on collisions that ...