TY - JOUR
T1 - Cross section measurement of e+e− → π+π−ψ(3686) from √s = 4.0076 GeV to 4.6984 GeV
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M.N.
AU - Adlarson, P.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Aliberti, R.
AU - Amoroso, A.
AU - Kalantar-Nayestanaki, Nasser
AU - Kappert, Rosa
AU - Kavatsyuk, Myroslav
AU - Messchendorp, Johan
AU - Rodin, Viktor
PY - 2021/9/1
Y1 - 2021/9/1
N2 - Using data samples with a total integrated luminosity of 20.1 fb−1 collected by the BESIII detector operating at the BEPCII collider, the cross section of the process e+e−→π+π−ψ(3686) is measured at center-of-mass energies between 4.0076 and 4.6984 GeV. The measured cross section is consistent with previous results, and with much improved precision. A fit to the measured energy-dependent cross section, which includes three Breit-Wigner functions and a nonresonant contribution, confirms the existence of the charmonium-like states Y(4220), Y(4390), and Y(4660). This is the first observation of the Y(4660) at the BESIII experiment.
AB - Using data samples with a total integrated luminosity of 20.1 fb−1 collected by the BESIII detector operating at the BEPCII collider, the cross section of the process e+e−→π+π−ψ(3686) is measured at center-of-mass energies between 4.0076 and 4.6984 GeV. The measured cross section is consistent with previous results, and with much improved precision. A fit to the measured energy-dependent cross section, which includes three Breit-Wigner functions and a nonresonant contribution, confirms the existence of the charmonium-like states Y(4220), Y(4390), and Y(4660). This is the first observation of the Y(4660) at the BESIII experiment.
U2 - 10.1103/PhysRevD.104.052012
DO - 10.1103/PhysRevD.104.052012
M3 - Article
SN - 1550-7998
VL - 104
JO - Physical Review D
JF - Physical Review D
IS - 5
M1 - 052012
ER -