Cross section measurements of e+e- →k+K-K+K- and φk+K- at center-of-mass energies from 2.10 to 3.08 GeV

The BESIII Collaboration

Результат исследования: Научные публикации в периодических изданияхстатья

3 Цитирования (Scopus)

Аннотация

We measure the Born cross sections of the process e+e-→K+K-K+K- at center-of-mass (c.m.) energies, s, between 2.100 and 3.080 GeV. The data were collected using the BESIII detector at the BEPCII collider. An enhancement at s=2.232 GeV is observed, very close to the e+e-→ΛΛ production threshold. A similar enhancement at the same c.m. energy is observed in the e+e-→φK+K- cross section. The energy dependence of the K+K-K+K- and φK+K- cross sections differs significantly from that of e+e-→φπ+π-.

Язык оригиналаанглийский
Номер статьи032009
Число страниц11
ЖурналPhysical Review D
Том100
Номер выпуска3
DOI
СостояниеОпубликовано - 30 авг 2019

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