Study of the process e(+)e(-) -> phi eta at center-of-mass energies between 2.00 and 3.08 GeV

Ablikim, M.Achasov, M. N.Adlarson, P.Ahmed, S.Albrecht, M.Aliberti, R.Amoroso, A.Kolcu, Onur Buğra2021-09-012021-09-012021Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., ... & Koch, L. (2021). Study of the process e+ e−→ ϕ η at center-of-mass energies between 2.00 and 3.08 GeV. Physical Review D, 104(3), 0320072470-00102470-0029https://www.doi.org/10.1103/PhysRevD.104.032007https://hdl.handle.net/20.500.12713/2017The process e(+)e(-) -> phi eta is studied at 22 center-of-mass energy points (root s) between 2.00 and 3.08 GeV using 715 pb(-1) of data collected with the BESIII detector. The measured Born cross section of e(+)e(-) -> phi eta is found to be consistent with BABAR measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9 sigma with mass (21635 +/- 6.2 +/- 3.0) MeV/c(2) and width (31.1(-11.6)(+21.1) +/- 1.1) MeV, where the first uncertainties are statistical and the second are systematic.eninfo:eu-repo/semantics/openAccessStudy of the process e(+)e(-) -> phi eta at center-of-mass energies between 2.00 and 3.08 GeVArticle1043WOS:0006869136000032-s2.0-85114351683Q110.1103/PhysRevD.104.032007Q1