Cross section measurement of e+e- →p p ¯ η and e+e- →p p ¯ ω at center-of-mass energies between 3.773 GeV and 4.6 GeV CROSS SECTION MEASUREMENT of e+e- →p p ¯ η ... ABLIKIM M. et al.

(BESIII Collaboration)

Research output: Contribution to journalArticlepeer-review

Abstract

Based on 14.7 fb-1 of e+e- annihilation data collected with the BESIII detector at the BEPCII collider at 17 different center-of-mass energies between 3.7730 GeV and 4.5995 GeV, Born cross sections of the two processes e+e-→pp¯η and e+e-→pp¯ω are measured for the first time. No indication of resonant production through a vector state V is observed, and upper limits on the Born cross sections of e+e-→V→pp¯η and e+e-→V→pp¯ω at the 90% confidence level are calculated for a large parameter space in resonance masses and widths. For the current world average parameters of the ψ(4230) of m=4.2187 GeV/c2 and Γ=44 MeV, we find upper limits on resonant production of the pp¯η and pp¯ω final states of 7.5 pb and 10.4 pb at the 90% CL, respectively.

Original languageEnglish (US)
Article number092008
JournalPhysical Review D
Volume104
Issue number9
DOIs
StatePublished - Nov 1 2021
Externally publishedYes

Bibliographical note

Funding Information:
The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11935015, No. 11935016, No. 11935018, No. 11961141012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1732263, No. U1832207; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement No. 894790; German Research Foundation DFG under Contracts Nos. Collaborative Research Center CRC 1044, FOR 2359, 443159800, Research Training Group 2149; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054, No. DH160214; The Swedish Research Council; Olle Engkvist Foundation under Contract No. 200-0605; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0012069.

Publisher Copyright:
© 2021 authors. Published by the American Physical Society.

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