particle-physics

If the position of a particle is described by a function of time then it will be $$\mathbf{p}(t) = x(t)\hat{\mathbf{x}} + y(t)\hat{\mathbf{y}} + z(t)\hat{\mathbf{z}}.$$ Then how can you represent it ...

Why should standard model particles be exactly the same? Why should electrons have exactly the same charge? It is as if God wasn't interested in making various particles and copied one electron a ...

The CERN Advanced STORage manager (CASTOR) is a hierarchical storage (i.e. has disk and tape) management system which was developed at CERN for archiving physics data (with very large data volumes, see the plot on the right). Files can be stored, listed, retrieved and remotely accessed using CASTOR command-line tools or user applications that were developed using the CASTOR API. CASTOR provides a…

STFC invites applications for its 2027 core summer schools in: Introduction to Astronomy BUSSTEPP (British Universities Summer School in Theoretical Particle Physics) Solar Physics, Nuclear Physics (every two years) High Energy Physics (HEP) Other events are not supported. STFC

Scientists studied collisions between lead-208 and neon-20 nuclei. The neon-20's shape produces patterns in how particles flow after a collision. These particles provide evidence of these collisions forming the quark gluon plasma and how nuclear shapes can leave a "fingerprint" of particle flow.

Mark Thomson has taken the reins at CERN just as particle physics confronts some of its deepest unknowns – and faces hard choices about what comes next

Protons and neutrons briefly pair up inside the nucleus in short-range correlations, and now, physicists have conclusively identified one criterion for how these particles pick their partners. The result involves the nuclear shell model, which, much like electron shells in atoms, separate the protons and neutrons into different energy shells in the nucleus.

A rare, ultra-energetic neutrino detected in 2023 may have originated from a distant blazar, revealing nature’s most extreme particle accelerator.

The charged lepton masses exhibit a remarkable empirical structure captured by the Koide relation, yet the dynamical origin of this relation remains unknown. Within Information Relational Manifestation Theory (IRMT), earlier work showed that the Cl(3) boundary algebra and its Frobenius-norm geometry naturally contain the Koide structure, but subsequent experiments revealed that the low-energy rel…

The permanent confinement of quarks is one of the most secure qualitative facts of the Standard Model, and quantum chromodynamics provides its dynamical account. This article does not contest that account, the experimental record, or any prediction of the theory. It contests a specific ontological inference: the reading according to which the unobservability of the isolated quark is exhaustively …

The suggestion that the tower of observed vector mesons – when regarded effectively as gauge fields of hidden local symmetries of chiral perturbation theory – is reasonably modeled as a Kaluza-Klein tower of D=5 Yang-Mills theory: That the pure pion-Skyrmion-model of baryons is approximately the KK-reduction of instantons in D=5 Yang-Mills theory is already due to: with a hyperbolic space-variant…

Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur. Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur–… SFIA Me…

‘Penguin’ decays from CERN’s latest Large Hadron Collider experiment hint at weird new physics

Abstract This paper presents a critical examination of the CMS Collaboration study entitled *"Combined Effective Field Theory Interpretation of Higgs Boson, Electroweak Vector Boson, Top Quark, and Multijet Measurements"*, including contributions from Guido Emilio Tonelli and collaborators. The reviewed work constitutes one of the most comprehensive contemporary implementations of the Standard Mo…

_Synthese_ 207 (6):240. 2026No-lose arguments state that—no matter what the result of an experiment will be—there will be a relevant epistemic gain if the experiment is performed. Here I provide an analysis of such arguments, looking at examples from particle physics. I argue that no-lose arguments indicate the pursuitworthiness of experiments by partially decoupling the expected epistemic gain o…

Ultrahigh-energy neutrinos can be our gateway to studying some of the Universe’s most energetic but least understood phenomena. Today’s paper presents a proof-of-concept for a new, promising way to detect these ultrahigh-energy particles.

On formulating and proving confinement and the Yang-Mills mass gap problem in lattice QCD with propabilistic methods: Sourav Chatterjee: Yang-Mills for probabilists, in: Probability and Analysis in Interacting Physical Systems, PROMS 283, Springer (2019) 1-16 [arXiv:1803.01950, doi:10.1007/978-3-030-15338-0] Sourav Chatterjee: A probabilistic mechanism for quark confinement, Comm. Math. Phys. 385…

Please prove me wrong. According to my calculations this spectrum also gives non-integer phase envelope, that may be a source of the CP asymmetry. Also, it may give ontological base to the spin and other SM entities.

The D-brane of dimension in type IIA string theory. The worldline theory of a collection of D0-branes is supposed to be described by the BFSS matrix model. The non-perturbative limit of type IIA superstring theory is supposed to be M-theory compactified on a circle. The degree-2 RR-field that the D0-brane is charged under, with local potential 1-form may be understood as the KK-field induced by t…

If all the particles in a reaction are either baryons or mesons, can we say that the forces involved are only strong and electromagnetic, and not weak?