QCD prediction for the non-$D\bar D$ annihilation decay of $ψ(3770)$

Simple item page
dc.creatorHe, Zhi-Guo
dc.creatorFan, Ying
dc.creatorChao, Kuang-Ta
dc.date2008-02-13
dc.date2008-09-09
dc.date.accessioned2026-07-07T11:56:02Z
dc.date.available2026-07-07T11:56:02Z
dc.descriptionTo clarify the marked difference between BES and CLEO measurements on the non-$D\bar D$ decays of the $ψ(3770)$, a $1^{3}D_{1}$-dominated charmonium, we calculate the annihilation decay of $ψ(3770)$ in NRQCD. By introducing the color-octet contributions, the results are free from infrared divergences. The color-octet matrix elements are estimated by solving the evolution equations. The S-D mixing effect is found to be very small. With $m_{c}=1.5\pm0.1\textrm{GeV}$ our result is $Γ(ψ(3770)\to \textrm{light hadrons})=467^{-187}_{+338}\textrm{KeV}$. For $m_c=1.4$ GeV, together with the observed hadronic transitions and E1 transitions, the non-$D\bar D$ decay branching ratio of $ψ(3770)$ could reach about 5%. Our results do not favor either of the results of BES and CLEO collaborations, and further experimental tests are urged.
dc.descriptionVersion published in PRL, errors and typos corrected, references added
dc.identifierhttps://arxiv.org/abs/0802.1849
dc.identifierhttp://arxiv.org/abs/0802.1849
dc.identifierPhys.Rev.Lett.101:112001,2008
dc.identifierdoi:10.1103/PhysRevLett.101.112001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205446
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleQCD prediction for the non-$D\bar D$ annihilation decay of $ψ(3770)$
dc.typetext

Files

Collections

arXiv