Электронный каталог

Статья

Ablikim, M.
Determination of Spin and Parity of D&sup(⁎ )&sub((s)) Mesons / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, S.Pogodin, A.Sarantsev, A.Zhemchugov, [et al.] // Physics Letters B [Electronic resource]. – 2023. – Vol.846. – P.138245. – URL: https://doi.org/10.1016/j.physletb.2023.138245. – Bibliogr.:48.

The spin and parity of the charmed mesons D∗+s , D∗0 and D∗+ are determined for the first time to be J P = 1− with significances greater than 10σ over other hypotheses of 2+ and 3−, using an e+e− collision data sample with an integrated luminosity of 3.19 fb−1 collected by the BESIII detector at a center-of- mass energy of 4.178 GeV. Different spin-parity hypotheses are tested via a helicity amplitude analysis of the processes e+e−→D∗+ s D− s , D∗0D0 and D∗+D−, with D∗+s→D+s γ , D∗0→D0π0, and D∗+→D+π0.The results confirm the quark model predictions.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки