ohwilleke said:
Even if SUSY did exist at those energy scales, it wouldn't be very useful and it is not like the laws of the universe are going anywhere. And, if SUSY exists anywhere, it is almost certainly not "just beyond LHC energies" because if it were, there would be a lot more anomalies in the LHC data because some observables are sensitive to much higher energy phenomena. We might not know just what was around the corner, but we would know that something was amiss. For SUSY to have no meaningful impact on LHC scale physics it has to be way over the mountains, across the desert and out across the sea, not just around the corner.
In contrast, we know for a fact that we are observing BSM physics with telescopes today that give rise to dark matter phenomena (dark energy is not really BSM since it can be fully explained through GR with the cosmological constant). And, we have myriad ways that we can narrow the range of theories that can fit the data associated with this BSM physics simply by having better instrumentation. Why spend our money on science that might, just possibly maybe reveal new physics when we can spend it on physics that will definitely reveal BSM physics of some kind and the only question is what kind?
ed witten for one is a fan of building the chinese collider.
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With a circumference of 50 to 100 km, however, the proposed Chinese accelerator Circular Electron Positron Collider (CEPC) will generate millions of Higgs boson particles, allowing a more precise understanding.
"The technical route we chose is different from LHC. While LHC smashes together protons, it generates Higgs particles together with many other particles," Wang said. "The proposed CEPC, however, collides electrons and positrons to create an extremely clean environment that only produces Higgs particles," he added.
The Higgs boson factory is only the first step of the ambitious plan. A second-phase project named SPPC (Super Proton-Proton Collider) is also included in the design－a fully upgraded version of LHC.
LHC shut down for upgrading in early 2013 and restarted in June with an almost doubled energy level of 13 TeV, a measurement of electron volts.
"LHC is hitting its limits of energy level, it seems not possible to escalate the energy dramatically at the existing facility," Wang said. The proposed SPPC will be a 100 TeV proton-proton collider.
If everything moves forward as proposed, the construction of the first phase project CEPC will start between 2020 and 2025, followed by the second phase in 2040.
"China brings to this entire discussion a certain level of newness. They are going to need help, but they have financial muscle and they have ambition," said Nima Arkani Hamed from the Institute for Advanced Study in the United States, who joined the force to promote CEPC in the world.
David J. Gross, a US particle physicist and 2004 Nobel Prize winner, wrote in a commentary co-signed by US theoretical physicist Edward Witten that although the cost of the project would be great, the benefits would also be great. "China would leap to a leadership position in an important frontier area of basic science," he wrote.
http://www.dailygalaxy.com/my_weblo...universe-so-far-the-standard-model-seems.html
Nima Arkani Hamed Ed Witten and David Gross thinks China should build a 100 TEV scale collider presumably with Chinese money
perhaps the US and Russia and EU can build telescopes ;)-)
perhaps a 100 TEV collider is needed to create dark matter and explore other BSM physics.
2040 is a long time from now :'(