TY - JOUR

T1 - Analysis of BaBar, Belle, BES-II, CLEO and KEDR data on ψ(3770) line shape and determination of the resonance parameters

AU - Shamov, A. G.

AU - Todyshev, K. Yu

PY - 2017/6/10

Y1 - 2017/6/10

N2 - The available data on the DD‾ and inclusive hadronic cross sections in the ψ(3770) region from the BaBar, Belle, BES-II, CLEO and KEDR experiments have been analyzed assuming that systematic uncertainties on cross sections measured by various detectors are not correlated. Four theoretical models predicting the ψ(3770) line shape were considered for the DD‾ channel. All of them gave satisfactory description of the data. The combined analysis of the DD‾ and inclusive hadronic channels was performed using the model based on the vector dominance approach and accounting for the contribution of the ψ(2S) tail to the DD‾ cross section. The following values of the mass, total width, electron width and decay probability to the non-DD‾ states were obtained: M (MeV)Γ (MeV)Γee (eV)BnDD‾3779.8±0.625.8±1.3196±180.164±0.049 where the errors quoted include both statistical and dominant systematic uncertainties.

AB - The available data on the DD‾ and inclusive hadronic cross sections in the ψ(3770) region from the BaBar, Belle, BES-II, CLEO and KEDR experiments have been analyzed assuming that systematic uncertainties on cross sections measured by various detectors are not correlated. Four theoretical models predicting the ψ(3770) line shape were considered for the DD‾ channel. All of them gave satisfactory description of the data. The combined analysis of the DD‾ and inclusive hadronic channels was performed using the model based on the vector dominance approach and accounting for the contribution of the ψ(2S) tail to the DD‾ cross section. The following values of the mass, total width, electron width and decay probability to the non-DD‾ states were obtained: M (MeV)Γ (MeV)Γee (eV)BnDD‾3779.8±0.625.8±1.3196±180.164±0.049 where the errors quoted include both statistical and dominant systematic uncertainties.

KW - CROSS-SECTIONS

KW - ANNIHILATION

KW - D(D)OVER-BAR

KW - E(+)E(-)

UR - http://www.scopus.com/inward/record.url?scp=85016999017&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2017.03.057

DO - 10.1016/j.physletb.2017.03.057

M3 - Article

AN - SCOPUS:85016999017

VL - 769

SP - 187

EP - 190

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -