The future of particle physics: China = CEPC: Higgs width, mass, couplings CERN = Straight to FCChh as soon as magnets viable: di-Higgs work/Higgs potential + higher energy studies of EWSB. US = Continues neutrino program and uses synergies to push R&D for a mu-col. Thoughts? 🧪⚛️ - ThreadSky

badboyofscience.bsky.social • 10 days ago

The future of particle physics:

China = CEPC: Higgs width, mass, couplings

CERN = Straight to FCChh as soon as magnets viable: di-Higgs work/Higgs potential + higher energy studies of EWSB.

US = Continues neutrino program and uses synergies to push R&D for a mu-col.

Thoughts?

🧪⚛️

Comments

c3jb.bsky.social•10 days ago

With the current administration here in the US, we’ll probably get funding for proving the world is flat and refuting the heliocentric solar system.

badboyofscience.bsky.social•10 days ago

Yeah, this is *an issue*

I probably should have said:

sportingjim.bsky.social•9 days ago

Thoughts? That my son needs to follow you! https://lppc.physics.harvard.edu/people/miller-macdonald-0

johncarrabc.bsky.social•9 days ago

I certainly think CERN going to FCChh as soon as possible is the only sensible and politically possible option.
What is the timescale for China CEPC? Is it really considered likely to happen?

badboyofscience.bsky.social•9 days ago

I think they're pretty set on doing it, and CERN can't beat them with FCCee, given the LHC won't even finish operation until 2040+

johncarrabc.bsky.social•9 days ago

Has China ever built an operational accelerator?
I remember cooperation with SLAC in the 1980s but I do not remember anything operating in China.

badboyofscience.bsky.social•9 days ago

Paging @wolfganggradl.bsky.social

They've done stuff on a smaller scale. I don't see why they couldn't go bigger, especially when experts from around the world will migrate there (as they do to CERN and Fermilab)
https://en.wikipedia.org/wiki/Beijing_Electron%E2%80%93Positron_Collider_II

johncarrabc.bsky.social•9 days ago

There is zero doubt that if China makes it a priority, it will happen. JUNO was a priority and is certainly going to happen.
There has been talk for decades about Chinese accelerators and nothing big has happened. Myself, I do not think it will unless there is a clear case.

cgrefe.bsky.social•10 days ago

If China goes ahead with a minimal CEPC (Z and Z+H production) then there is room for a complementary linear collider at CERN: tt threshold, direct di-Higgs production, plus upgrades to higher energy if HLLHC finds something. Straight to FCChh is a too long break at CERN, and very risky.

badboyofscience.bsky.social•10 days ago

Yep - it does seem that that gap would have to be filled with something like a linear collider that goes up to ~500GeV and produces di-Higgs through ZHH.

@koppenburg.ch is smiling somewhere...

cburgescliff.bsky.social•9 days ago

Nothing wrong with neutrinos, but the US used to be more ambitious than that

badboyofscience.bsky.social•9 days ago

I’m listening 👂

What would you go for in the US?

Tell Uncle Sam.

cburgescliff.bsky.social•9 days ago

All of the above. The US used to lead in everything

badboyofscience.bsky.social•9 days ago

I also need to look into what Japan is doing! 🇯🇵

badboyofscience.bsky.social•10 days ago

I know many (e.g. @koppenburg.ch ) favour the building of a linear collider at CERN, as the thought of not going to higher energy/doing any di-Higgs work until 2070+ is problematic.

I am sympathetic.

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