Conservation laws

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We include updates on Momentum, Angular momentum, Electric charge, Noether's theorem, Continuity equation, Gravitational energy, CP violation, Burgers' equation, Advection, Rankine–Hugoniot conditions, Zero-energy universe, Vis-viva equation, Rarefaction, Riemann invariant, Chiral anomaly, Traffic flow ... and more.

March 2025
CP violation
LHCb announced discovery of CP violation in baryon decays with a deviation from zero of 5.2 standard deviations.
2022
Zilch
First comprehensive answer discovered regarding the symmetries of the standard Maxwell action underlying the conservation of all zilches, revealing a hidden invariance algebra of free Maxwell equations.
2021
Magnetic braking
Researchers at the University of Birmingham published a study in Nature Astronomy using asteroseismology to confirm that older stars appear to rotate faster than expected, providing further evidence of weakened magnetic braking.
2020
CP violation
T2K Collaboration reported first indications of CP violation in leptons through neutrino beam experiments, though the results were not yet precisely determined.
2020
Zilch
Aghapour, Andersson, and Rosquist emphasized the open mathematical question about zilch symmetries and found symmetries of the duality-symmetric Maxwell action.
March 2019
CP violation
LHCb announced discovery of CP violation in charmed D^0 decays, with a deviation from zero of 5.3 standard deviations.
2018
Zilch
Physical interpretation of zilches for topologically non-trivial electromagnetic fields was investigated.
2016
Magnetic braking
Scientists at Carnegie Observatories published research suggesting stars at a stage similar to the Sun are spinning faster than traditional magnetic braking theories predicted, using a method of tracking dark spots on stellar surfaces to measure rotation.
2013
CP violation
LHCb announced discovery of CP violation in strange B meson decays.
2013
Zilch
Philbin provided an answer to the symmetry question specifically for optical chirality using Noether's theorem.
2012
Zilch
A new physical insight was offered about optical chirality, explaining its relationship to the curl or time derivative of the electromagnetic field.
2011
CP violation
LHCb experiment at CERN reported a hint of CP violation in neutral D meson decays using partial Run 1 data.

This contents of the box above is based on material from the Wikipedia articles Magnetic braking (astronomy), Zilch (electromagnetism), Symmetry (physics) & CP violation, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.