As we begin a new year, it is helpful to consider what is on our plate, not just in one's personal and professional lives, but in the disciplines we are interested in. In physics, these include the following.
* Determine the seven Standard Model parameters related to neutrinos with greater precision (especially the neutrino masses and the CP violating parameter of the PMNS matrix).
* Rule out non-standard interactions and sterile neutrino hypotheses further.
* Determine how neutrino mass arises (Majorana, Dirac, other, and in any scenario, how this happens).
* Determine how to determine the entire hadron spectrum from first principles, especially scalar mesons, axial vector mesons, and hadrons with four or more valance quarks.
* Are free glueballs possible?
* Determine if there are any relatively stable hadrons other than protons and bound neutrons (some people have suggested that there may be such a hexaquark, but most are skeptical of this possibility).
* Determine if there is a hypothetical upper limit to the scale of hadrons beyond which there is not sufficient energy to bind additional quarks.
* Determine if lepton universality is a correct Standard Model law of physics, and if not, to develop a phenomenological understanding of the deviations from it and the mechanism behind that deviation.
* Do the sphaleron interactions of the Standard Model actually happen?
* Is the value of the QCD coupling constant zero or non-zero in the limit of zero momentum transfer?
* Determine which of the leading predictions for the anomalous magnetic moment of the muon (muon g-2) is closest to being correct.
* Determine the source of dark matter phenomena (probably some subtle tweak to the laws of gravity)
* Determine the magnitude and source of dark energy phenomena (probably the laws of gravity combined with understated uncertainty in measurements of it)
* Resolve the Hubble tension or determine that it arises from new physics.
* Determine if the LP & C relationship, that the sum of the squares of the fundamental particle masses in the Standard Model is equal to the Higgs vacuum expectation value continues to hold at greater precision.
* Determine if Koide's rule for charged leptons continues to hold true.
* Identify better phenomenological relationships between the Standard Model experimentally measured parameters.
* Determine with greater precision, all Standard Model experimentally measured physical parameters.
* Determine how gravity affects the high energy running of the parameters of the Standard Model.
* Improve the precision with which we known Newton's constant "G".
* Better develop means of calculating Standard Model physics parameters that do not rely on infinite series approximations.
* Determine if there are aspects of string theory that can be salvaged in the absence of supersymmetry and supergravity.
* Bring about greater recognition that the LambdaCDM Standard Model of Cosmology is beyond salvaging.
* Better determine the critical maximum mass of a neutron star without turning into a black hole with greater precision, both theoretically and observationally, and in so doing, determine more about whether neutron stars contain matter other than ordinary but highly compressed neutrons.
* Determine if Planet 9 exists in our solar system, and if so, where it is and what properties it has.
* Determine if four neutron resonances (basically element-0) can be created in laboratories and exist briefly (two, three and five neutron resonances cannot be created in this way).
* Precisely what triggers wave function collapse?
* Is gravity quantum or classical? Is a quantum gravity transmitted by a carrier boson or a function of the discreteness of space-time?
* Is entanglement really a non-local phenomena? Is physics causal?