TY - JOUR

T1 - Observation of *

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Nikolaev, I. b.

AU - Мучной, Николай Юрьевич

N1 - Observation of * / BESIII COLLABORATION // Chinese Physics C. – 2023. – Vol. 47, No. 4. – P. 043001. – DOI 10.1088/1674-1137/acb6eb.

PY - 2023/4/1

Y1 - 2023/4/1

N2 - Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESIII detector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8 , the process is observed for the first time with a statistical significance of . The average Born cross sections in the energy ranges of (4.160, 4.380) GeV, (4.400, 4.600) GeV and (4.610, 4.700) GeV are measured to be fb, fb and fb, respectively, where the first uncertainties are tatistical and the second are systematic. The line shapes of the and invariant mass spectra are consistent with phase space distributions, indicating that no hexaquark or di-baryon state is observed.

AB - Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESIII detector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8 , the process is observed for the first time with a statistical significance of . The average Born cross sections in the energy ranges of (4.160, 4.380) GeV, (4.400, 4.600) GeV and (4.610, 4.700) GeV are measured to be fb, fb and fb, respectively, where the first uncertainties are tatistical and the second are systematic. The line shapes of the and invariant mass spectra are consistent with phase space distributions, indicating that no hexaquark or di-baryon state is observed.

UR - https://www.elibrary.ru/item.asp?id=60503655

U2 - 10.1088/1674-1137/acb6eb

DO - 10.1088/1674-1137/acb6eb

M3 - Article

VL - 47

SP - 043001

JO - Chinese Physics C

JF - Chinese Physics C

SN - 1674-1137

IS - 4

ER -