Электронный каталог

Статья

Chekhovsky, V.
Search for the Rare Decay D*0 *> *m*+*m*- in Proton-Proton Collisions at *%s-13.6 TeV / V.Chekhovsky, S.Afanasiev, V.Alexakhin, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, O.Kodolova, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, A.Nikitenko, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, Z.Tsamalaidze, [CMS Collab.]. – Text : electronic // Physical Review Letters. – 2025. – Vol. 135, No. 15. – P. 151803. – URL: https://doi.org/10.1103/zc76-rgcp. – Bibliogr.: 38.

A search for the rare decay 𝐷*0→𝜇*+⁢𝜇*− is reported using proton-proton collision events at √𝑠 =13.6  TeV collected by the CMS detector in 2022–2023, corresponding to an integrated luminosity of 64.5  fb*−*1. This is the first analysis to use a newly developed inclusive dimuon trigger, expanding the scope of the CMS flavor physics program. The search uses 𝐷*0 mesons obtained from 𝐷&sup(*+)→𝐷*0⁢𝜋*+ decays. No significant excess is observed. A limit on the branching fraction of ℬ⁡(𝐷*0→𝜇*+⁢𝜇*−)<2.4×10*−*9 at 95% confidence level is set. This is the most stringent upper limit set on any flavor changing neutral current decay in the charm sector.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами