Электронный каталог

Статья

Ablikim, M.
Observation of the Singly Cabibbo-Suppressed Decay *L*+&sub(c)*>*S*-K*+*p*+ / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, S.Pogodin, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2024. – Vol. 109, No. 7. – P. L071103. – URL: https://doi.org/10.1103/PhysRevD.109.L071103. – Bibliogr.: 40.

Understanding the nonfactorization contribution is criti- cally challenging for advancing our knowledge of the hadronic weak decays of charmed baryons, as W exchange and inner W emission are no longer subject to helicity and color suppression [1]. The evaluation of nonfactorizable terms is far more difficult than that of factorizable ones and thus the constraints with experimental results are essential. Studies on the charmed baryon decays in experiment have promoted the understanding on the mechanism of charmed baryon decays. Nevertheless, there are still some puzzles needed to be understood. For example, why does the breaking effects arising from m&sub(s) ≫ m&sub(u,d) under SU(3) flavor symmetry significantly exist in the decays of *X&sup(0)&sub(c) [2], but much smaller in Λ&sup(+)&sub(c)c decays [3,4]? Furthermore, the discrepancy between the experimental results and the theo- retical prediction for the branching fraction (BF) of the decay Λ&sup(+)&sub(c)c → pπ*0 may indicate the significant contribution of a nonfactorization component and the interference between nonfactorization and factorization contributions [5–7]. Therefore, correctly estimating the nonfactorization contribution is still one of core tasks in the charm baryon physics.



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