Çetin, Serkant Ali2021-05-282021-05-282019-08-302470-0010https://hdl.handle.net/11411/3677https://doi.org/10.1103/PhysRevD.100.032009We 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-??? production threshold. A similar enhancement at the same c.m. energy is observed in the e+e-??K+K- cross section. The energy dependence of the K+K-K+K- and ?K+K- cross sections differs significantly from that of e+e-???+?-.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8507259727410.1103/PhysRevD.100.032009Q1WOS:000483349300001