Using 15.6 fb(-1) of e(+)e(-) collision data collected at twenty-four center-of-mass energies from 4.0 to 4.6 GeV with the BESIII detector, the helicity amplitudes of the process e(+)e(-) -> (+)pi(-)omega are analyzed for the first time. Born cross section measurements of two-body intermediate resonance states with statistical significance greater than 5 sigma are presented, such as f(0)(500), f(0)(980), f(2)(1270), f(0)(1370), b(1)(1235)(+/-), and rho(1450)(+/-). In addition, evidence of a resonance state in e(+)e(-) -> pi(+)pi(-)omega production is found. The mass of this state obtained by line shape fitting is about 4.2 GeV/c(2), which is consistent with the production of psi(4160) or Y(4220).

Study of the e+e − → π + π − ω process at center-of-mass energies between 4.0 and 4.6 GeV

A. Amoroso;F. Bianchi;A. Bortone;M. Destefanis;F. De Mori;M. Greco;L. Lavezzi;M. Maggiora;S. Marcello;S. Sosio;S. Spataro;
2023-01-01

Abstract

Using 15.6 fb(-1) of e(+)e(-) collision data collected at twenty-four center-of-mass energies from 4.0 to 4.6 GeV with the BESIII detector, the helicity amplitudes of the process e(+)e(-) -> (+)pi(-)omega are analyzed for the first time. Born cross section measurements of two-body intermediate resonance states with statistical significance greater than 5 sigma are presented, such as f(0)(500), f(0)(980), f(2)(1270), f(0)(1370), b(1)(1235)(+/-), and rho(1450)(+/-). In addition, evidence of a resonance state in e(+)e(-) -> pi(+)pi(-)omega production is found. The mass of this state obtained by line shape fitting is about 4.2 GeV/c(2), which is consistent with the production of psi(4160) or Y(4220).
2023
Inglese
Esperti anonimi
2023
8
1
32
32
https://link.springer.com/article/10.1007/JHEP08(2023)159
e(+)-e(-) Experiments; QCD; Quarkonium
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M. Ablikim; M. N. Achasov; P. Adlarson; M. Albrecht; R. Aliberti; A. Amoroso; M. R. An; Q. An; Y. Bai; O. Bakina; R. Baldini Ferroli; I. Balossino; Y....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1946318
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