Cross Section Measurement of e(+)e(-) -> p(p)over-bar eta and e(+)e(-) -> p(p)over-bar Omega at Center-of-Mass Energies Between 3.773 GeV and 4.6 GeV
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Erişim
info:eu-repo/semantics/openAccessAttribution-NoDerivs 3.0 United Stateshttp://creativecommons.org/licenses/by-nd/3.0/us/Tarih
2021Üst veri
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Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Amoroso, A., ... & Kurth, M. G. (2021). 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. Physical Review D, 104(9), 092008.Özet
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(-) -> p (p) over bar eta and e(+)e(-) -> p (p) over bar omega 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(-) -> p (p) over bar eta and e(+)e(-) -> p (p) over bar omega 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 psi(4230) of m = 4.2187 GeV=c(2) and Gamma = 44 MeV, we find upper limits on resonant production of the p (p) over bar eta and p (p) over bar omega final states of 7.5 pb and 10.4 pb at the 90% CL, respectively.
Kaynak
Physical Review DCilt
104Sayı
9Koleksiyonlar
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