Measurements of the continuum $R_{\rm uds}$ and $R$ values in $e^+e^-$ annihilation in the energy region between 3.650 and 3.872 GeV

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dc.creatoral, M. Ablikim et
dc.date2006-12-22
dc.date.accessioned2026-07-07T11:58:20Z
dc.date.available2026-07-07T11:58:20Z
dc.descriptionWe report measurents of the continuum $R_{\rm uds}$ near the center-of-mass energy of 3.70 GeV, the $R_{{\rm uds(c)}+ψ(3770)}(s)$ and the $R_{\rm had}(s)$ values in $e^+e^-$ annihilation at 68 energy points in the energy region between 3.650 and 3.872 GeV with the BES-II detector at the BEPC Collodier. We obtain the $R_{\rm uds}$ for the continuum light hadron (containing u, d and s quarks) production near the $D\bar D$ threshold to be $R_{\rm uds}=2.141 \pm 0.025 \pm 0.085$.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0612054
dc.identifierhttp://arxiv.org/abs/hep-ex/0612054
dc.identifierPhys.Rev.Lett.97:262001,2006
dc.identifierdoi:10.1103/PhysRevLett.97.262001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206192
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurements of the continuum $R_{\rm uds}$ and $R$ values in $e^+e^-$ annihilation in the energy region between 3.650 and 3.872 GeV
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