Электронный каталог

Статья

Ablikim, M.
Search for a Muonphilic Scalar X&sub(0) or Vector X&sub(1) via J/*q *> *m*+*m*- + Invisible Decays at BESIII / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2024. – Vol. 109, No. 3. – P. L031102. – URL: https://doi.org/10.1103/PhysRevD.109.L031102. – Bibliogr.: 45.

A light scalar X0 or vector X1 particles have been introduced as a possible explanation for the (g−2)μ anomaly and dark matter phenomena. Using (8.998±0.039)×109  J/ψ events collected by the BESIII detector, we search for a light muon philic scalar X0 or vector X1 in the processes J/ψ→μ+μ−X0,1 with X0,1 invisible decays. No obvious signal is found, and the upper limits on the coupling g′0,1 between the muon and the X0,1 particles are set to be between 1.1×10−3 and 1.0×10−2 for the X0,1 mass in the range of 1 < M(X0,1) < 1000  MeV/c2 at 90% credibility level.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки