67. Adding the TΟΟ(6600) #tetraquark, most likely containing two charm quarks and two charm antiquarks, reported by @CMSExperiment at @ichep2022 .
There are now 67 hadrons found at the LHC. https://www.nikhef.nl/~pkoppenb/particles.html
Little advertised feature: @LHCbPhysics released unbinned histogram data for the Tcc #tetraquark observation. See @HEPData https://www.hepdata.net/record/ins1915358 .
My hadrons count is now published in @nature π.
#tetraquark paper by @dcastelvecchi
.https://www.nature.com/articles/d41586-021-02174-6
Translating science news.
I told @isaac_schultz_ that the Tcc #tetraquark has a lifetime of "around 10β»Β²β° seconds, maybe even less".
It's actually more like 10β»Β²ΒΉ seconds. I put it in context in this plot of selected particles.
The BES III experiment in Beijing reports a strange #tetraquark, with quarks: charm, anti-charm, strange and anti-up. It's the first charmonium tetraquark with one strange quark. https://arxiv.org/abs/2011.07855 (was 2 weeks ago).
At the #LHC committee session,Β Preema Rennee Pais of @EPFL presents the latest @LHCbExperiment results, including the observation of two new Ξ£b baryon resonances and evidence for a new charged #tetraquark candidate.
The #tetraquark candidate seen by #D0 at @Tevatron has been searched for by @ATLASexperiment. They didn't find anything, just as @LHCbExperiment, @CMSexperiment and #CDF before. https://arxiv.org/abs/1802.01840 #onlySeenByD0
Looking forward to reading the Heavy-Quark QCD Exotica review by Lebed, Mitchell, Swanson. https://arxiv.org/abs/1610.04528 #pentaquark #tetraquark
So D0 see a Bspi #tetraquark in 2 Bs channels, while @LHCbExperiment and @CMSexperiment don't see it. Has CDF anything to say?
#tetraquark in @KIJKredactie www.kijkmagazine.nl/nieuws/nieuw-deeltje-gev... https://t.co/GUGIf7vNQm
BES-III at Beijing discovers more #tetraquark candidates, see www.symmetrymagazine.org/article/chinese-collider...
