DIKUL - logo
E-viri
Celotno besedilo
Recenzirano Odprti dostop
  • Measurement of e+e− → ωπ+π− cross section at s = 2.000 to 3.080 GeV
    Ban, Y.; Boyko, I.; Briere, R. A.; Cao, G. F.; Chang, W. L.; Chen, G.; Chen, S. J.; Cossio, F.; De Mori, F.; Dong, J.; Fava, L.; Gao, Yang; Gong, L.; Gong, W. X.; Herold, C.; Himmelreich, M.; Holtmann, T.; Hou, Y. R.; Hou, Z. L.; Hu, J. F.; Hu, Y.; Huang, K. X.; Irshad, M.; Ji, Q.; Ji, X. L.; Jiao, J. B.; Keshk, I. K.; Kurth, M. G.; Lange, J. S.; Lavania, A.; Leithoff, H.; Li, D. M.; Li, J. Q.; Li, P. R.; Li, X. H.; Li, Z. Y.; Liang, Y. T.; Libby, J.; Lin, T.; Liu, B. J.; Liu, Huihui; Liu, L.; Lu, X. L.; Luo, C. L.; Ma, H. L.; Maldaner, S.; Malik, Q. A.; Mao, Y. J.; Nisar, S.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, X.; Pathak, A.; Plura, S.; Poling, R.; Prasad, V.; Qi, H.; Qin, L. Q.; Qin, X. P.; Qin, X. S.; Qu, S. Q.; Rashid, K. H.; Ravindran, K.; Sang, H. S.; Schnier, C.; Song, J. J.; Sun, T.; Tang, G. Y.; Tang, J.; Wang, H. J.; Wang, L. L.; Wang, W. H.; Wei, D. H.; Wu, X.; Wu, X. H.; Xiao, Y. L.; Xu, S. Y.; Xu, X. P.; Xu, Y. C.; Yang, Y. X.; Yuan, C. Z.; Yuan, S. C.; Zafar, A. A.; Zeng, Y.; Zhang, B. L.; Zhang, L. M.; Zhang, X. Y.; Zhang, Y.; Zhang, Z. H.; Zhao, Ling; Zhemchugov, A.; Zhou, L. P.; Zhou, X.; Zhou, X. Y.; Zhu, K. J.; Zhu, S. H.; Zhu, Y. C.; Zhu, Z. A.; Zou, B. S.

    The journal of high energy physics, 01/2023, Letnik: 2023, Številka: 1
    Journal Article

    A bstract A partial wave analysis on the process e + e − → ωπ + π − is performed using 647 pb − 1 of data sample collected by using the BESIII detector operating at the BEPCII storage ring at center-of-mass (c.m.) energies from 2.000 GeV to 3.080 GeV. The Born cross section of the e + e − → ωπ + π − process is measured, with precision improved by a factor of 3 compared to that of previous studies. A structure near 2.25 GeV is observed in the energy-dependent cross sections of e + e − → ωπ + π − and ωπ 0 π 0 with a statistical significance of 7.6 σ , and its determined mass and width are 2232 ± 19 ± 27 MeV /c 2 and 93 ± 53 ± 20 MeV, respectively, where the first and second uncertainties are statistical and systematic, respectively. By analyzing the cross sections of subprocesses e + e − → ωf 0 (500), ωf 0 (980), ωf 0 (1370), ωf 2 (1270), and b 1 (1235) π , a structure, with mass M = 2200 ± 11 ± 17 MeV/ c 2 and width Γ = 74 ± 20 ± 24 MeV, is observed with a combined statistical significance of 7.9 σ . The measured resonance parameters will help to reveal the nature of vector states around 2.25 GeV.

Vnos na polico