Электронный каталог

Статья

Ablikim, M.
Observation of *q(3686) *> 3*f / 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. 7. – P. 072015. – URL: https://doi.org/10.1103/PhysRevD.109.072015. – Bibliogr.: 29.

Charmonium resonances lie in between the perturbative and nonperturbative regimes of quantum chromodynamics (QCD) [1–3], which describes the strong interaction. Below the open charm threshold, both J=ψ and ψð3686Þ mainly decay into light hadrons through the annihilation of the c¯c pair into three gluons or one single virtual photon, with the decay width proportional to the modules of the charmo- nium wave function [4]. QCD has been tested thoroughly at high energy region where the strong interaction coupling constant is small. However, in the low energy region, theoretical calculations based on first principles of QCD are still unreliable since the nonperturbative contribution is significant, and various effective field theories are intro- duced [5–7] to approximate these nonperturbative contri- butions. The study of charmonium decays can provide valuable insights to improve the understanding of the inner charmonium structure and test phenomenological mecha- nisms of nonperturbative QCD.



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