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Статья

Ablikim, M.
Single Inclusive *p&sup(*() and K&sup(*() Production in e*+e*- Annihilation at Center-of-Mass Energies from 2.000 to 3.671 GeV / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.]. – Text : electronic // Physical Review Letters. – 2025. – Vol. 135, No. 15. – P. 151901. – URL: https://doi.org/10.1103/5kxw-3mbw. – Bibliogr.: 35.

Using data samples with a total integrated luminosity of 253  pb*−*1 collected by the BESIII detector operating at the BEPCII collider, the differential cross sections of inclusive 𝜋&sup(±) and 𝐾&sup(±) production, as a function of the momentum and normalized by the total hadronic cross section, are measured at center-of-mass energies from 2.000 to 3.671 GeV. The measured 𝜋&sup(±) cross sections are consistent with the previously reported 𝜋*0 cross sections by BESIII, while the 𝐾± cross sections are systematically higher than the 𝐾*0&sub(𝑆) cross sections by a factor of approximately 1.4. These new results are in agreement with state-of-the-art QCD analyses at next-to-next-to-leading-order accuracy, particularly in the large hadron momentum region at energy scales down to 3 GeV. These findings support the validity of isospin symmetry in parton fragmentation processes.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
Спец.(статьи,препринты) = С 346.4б - Образование пи-мезонов при соударении частиц и гамма-квантов
Спец.(статьи,препринты) = С 346.5а - Образование гиперонов и К-мезонов частицами и гамма-квантами