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Paper 1 (45 raw marks contributing 30% of the course, 1 hour) consists of short-answer and data-based questions. Paper 2 (65 raw marks contributing 50% of the course, 2 hours) consists of: Section A: Candidates are required to analyse and make reasoned and balanced judgements relating to a range of data on a specific unseen case study.
A key question related to the consistency is the Yang–Mills existence and mass gap problem. Experiments indicate that neutrinos have mass , which the classic Standard Model did not allow. [ 60 ] To accommodate this finding, the classic Standard Model can be modified to include neutrino mass, although it is not obvious exactly how this should ...
By the 1980s, the question of whether the Higgs field existed, and therefore whether the entire Standard Model was correct, had come to be regarded as one of the most important unanswered questions in particle physics. The existence of the Higgs field became the last unverified part of the Standard Model of particle physics, and for several ...
Pages in category "Physics papers" The following 15 pages are in this category, out of 15 total. This list may not reflect recent changes. 0–9.
The acronym GUT was first coined in 1978 by CERN researchers John Ellis, Andrzej Buras, Mary K. Gaillard, and Dimitri Nanopoulos, however in the final version of their paper [5] they opted for the less anatomical GUM (Grand Unification Mass). Nanopoulos later that year was the first to use [6] the acronym in a paper. [7]
The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
The 1964 PRL symmetry breaking papers were written by three teams who proposed related but different approaches to explain how mass could arise in local gauge theories. These three papers were written by: Robert Brout and François Englert; [1] [2] Peter Higgs; [3] and Gerald Guralnik, C. Richard Hagen, and Tom Kibble (GHK).
The problem of quantum gravity and the question of the reality of spacetime singularities remain open. [211] Observational data that is taken as evidence for dark energy and dark matter could indicate the need for new physics. [212] Even taken as is, general relativity is rich with possibilities for further exploration.