Test of lepton universality in beauty-quark decays · HackerPapers discussions

Test of lepton universality in beauty-quark decays — HN submission

Tue, 23 Mar 2021 20:12:48 GMT

LHC experiment finds possible evidence for new physics

4 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

Test of lepton universality in beauty-quark decays — mentioned by dalewe

Tue, 23 Mar 2021 12:21:53 GMT

The paper mentions leptoquarks (particles that interact with leptons and quarks with potentially different coupling strengths for different leptons therefore breaking lepton universality) or some unknown heavy (didn't look into it any further but I guess the heavy requirement is there because otherwise we would already have observed its effects, I don't think it's necessary for this particular observation) neutral boson that would for example allow flavor changing of leptons ("flavor" means whether it is an electron, muon our tau lepton). Edit: https://arxiv.org/pdf/2103.11769.pdf…

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Test of lepton universality in beauty-quark decays — mentioned by nabla9

Tue, 23 Mar 2021 10:07:55 GMT

CERN: https://home.cern/news/news/physics/intriguing-new-result-lh... Video News release : : https://videos.cern.ch/record/2758757 LHCb article : https://lhcb-public.web.cern.ch/Welcome.html#RK2021 LHCb paper : https://arxiv.org/abs/2103.11769

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Test of lepton universality in beauty-quark decays — mentioned by nabla9

Tue, 23 Mar 2021 10:06:45 GMT

CERN: https://home.cern/news/news/physics/intriguing-new-result-lh... LHCb article : https://lhcb-public.web.cern.ch/Welcome.html#RK2021 VNR : https://videos.cern.ch/record/2758757 LHCb paper : https://arxiv.org/abs/2103.11769

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Test of lepton universality in beauty-quark decays — mentioned by isaacg

Tue, 23 Mar 2021 09:39:02 GMT

I believe this is the relevant arxiv preprint: https://arxiv.org/abs/2103.11769 And here is a post by some of the main authors describing their findings: https://theconversation.com/evidence-of-brand-new-physics-at...

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Test of lepton universality in beauty-quark decays — mentioned by isaacg

Tue, 23 Mar 2021 09:34:43 GMT

The official name of the LHCb experiment is the "Large Hadron Collider beauty" experiment, as named by the scientists themselves. So "beauty quark" is more correct in this context. https://home.cern/science/experiments/lhcb Moreover, the paper that describes the result that this article is discussing has "beauty quark" in the name: https://arxiv.org/abs/2103.11769

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