The Born cross sections for the process e+e− → η′π+π− at different center-of-mass energies between 2.00 and 3.08 GeV are reported with improved precision from an analysis of data samples collected ...with the BESIII detector operating at the BEPCII storage ring. An obvious structure is observed in the Born cross section line shape. Fit as a Breit-Wigner resonance, it has a statistical significance of 6.3 σ and a mass and width of M = ( 2111 ± 43 ± 25 ) MeV / c2 and Γ = ( 135 ± 34 ± 30 ) MeV , where the uncertainties are statistical and systematic, respectively. These measured resonance parameters agree with the measurements of BABAR in e+e− → η′ π+π− and BESIII in e+e− → ωπ0 within two standard deviations.
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To evaluate and compare the health-related quality of life (HRQOL) of patients with newly diagnosed CML in the first chronic phase (CML-CP1) receiving HLA-identical sibling donor (ISD) hematopoietic ...SCT (HSCT) or imatinib, a cross-sectional study that was part of a prospective cohort study at the Institute of Hematology, Peking University was performed. A total of 222 patients including 126 and 96 in the imatinib and ISD HSCT groups, respectively, were enrolled. HRQOL was measured using the Medical Outcomes Study 36-Item Short-Form Health Survey. The ISD HSCT group functioned significantly better on the role-physical functioning and mental health subscales, as well as the mental component summary (MCS) than the imatinib group. HRQOL was generally comparable to groups in the young population. Multivariate analysis showed that white blood cell count ≥ 30 × 10(9)/L and plts count ≥ 450 × 10(9)/L were the major adverse factors affecting HRQOL in long-term survivors. Imatinib therapy was also an adverse factor affecting the MCS (odds ratio=1.7, P=0.032). Thus, long-term CML-CP1 survivors receiving ISD HSCT can attain desirable HRQOL comparable to or better than that of patients receiving imatinib.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Using data taken at 23 center-of-mass energies between 4.0 and 4.6 GeV with the BESIII detector at the Beijing Electron Positron Collider and with a total integrated luminosity of approximately 15 ...fb−1, the process e+e− → 2(pp) is studied for the first time. The Born cross sections for e+e− → 2(pp) are measured, and no significant structure is observed in the lineshape. The baryon pair (pp and pp) invariant mass spectra are consistent with phase space, therefore no hexaquark or di-baryon state is found.
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The Born cross sections and effective form factors for process e+e− → Ξ−Ξ+ are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total integrated luminosity of 363.9 ...pb−1e+e− collision data collected with the BESIII detector at BEPCII. After performing a fit to the Born cross section of e+e− → Ξ−Ξ+, no significant threshold effect is observed.
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The rare decay η' → π+π–e+e– is studied using a sample of 1.3 × 109 J/ψ events collected with the BESIII detector at BEPCII in 2009 and 2012. The branching fraction is measured with improved ...precision to be (2.42 ± 0.05stat ± 0.08syst) × 10–3. Due to the inclusion of new data, this result supersedes the last BESIII result on this branching fraction. In addition, the CP-violating asymmetry in the angle between the decay planes of the π+π–-pair and the e+e–-pair is investigated. A measurable value would indicate physics beyond the standard model; the result is ACP = (2.9 ± 3.7stat ± 1.1syst)%, which is consistent with the standard model expectation of no CP-violation. The precision is comparable to the asymmetry measurement in the $K^{0}_{L}$ → π+π–e+e– decay where the observed (14 ± 2)% effect is driven by a standard model mechanism.
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