Post
Patrick Koppenburg 🐧
koppenburg.ch
did:plc:3327emtnabbhassdfga7qxbz
🤔 CMS also measure R(J/ψ) on the high side. That's the ratio of Bc⁺→J/ψτν to
Bc⁺→J/ψμν. LHCb saw an excess compared to the Standard Model, now CMS has it too.
arxiv.org/pdf/2510.21559
2025-10-27T07:09:12.358Z