Engineering topics
Garbolino, S.
Publications and source records attributed to Garbolino, S..
Study of the resonance structures in the process e + e − → π + π − J / ψ
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Search for the weak decay ψ (3686) → $Λ^{+}_{c}$ $\overline{Σ}$ - + c.c. *
Using (448.1 ± 2.9) x 10 6 ψ (3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ψ (3686) → $Λ^{+}_{c}$ $\overline{Σ}$ - + c.c. . The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction ($\mathcal{B}$) of ψ (3686) → $Λ^{+}_{c}$ $\overline{Σ}$ - + c.c. is set as 1.4 x 10 -5 at the 90% confidence level.
Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay Λ c + → p η ′
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Amplitude analysis and branching fraction measurement of the decay $\mathrm{D}_s^+$ → $\mathrm{K}^+π^+π^-π^0$
The singly Cabibbo-suppressed decay D$^+_s$ → K + π + π - π 0 is observed by using a data set corresponding to an integrated luminosity of 6.32 fb -1 recorded by the BESIII detector at the centre-of-mass energies between 4.178 and 4.226 GeV. The first amplitude analysis of D$^+_s$ → K + π + π - π 0 reveals the sub-structures in this decay and determines the fractions and relative phases of different intermediate processes. The dominant intermediate process is D$^+_s$ → K *0 ρ + , with a fit fraction of (40.5 ± 2.8 stat. ± 1.5 syst. )%. With the detection efficiency based on our amplitude analysis, the absolute branching fraction for D$^+_s$ → K + π + π - π 0 is measured to be (9.75 ± 0.54 stat. ± 0.17 syst. ) x 10 -3 .
Measurement of e + e − → π + π − D + D − cross sections at center-of-mass energies from 4.190 to 4.946 GeV
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Precise Measurements of Decay Parameters and C P Asymmetry with Entangled Λ − Λ ¯ Pairs
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Evidence for a Neutral Near-Threshold Structure in the K S 0 Recoil-Mass Spectra in e + e − → K S 0 D s + D * − and e + e − → K S 0 D s * + D −
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Measurement of branching fractions of singly Cabibbo-suppressed decays Λ c + → Σ 0 K + and Σ + K S 0
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Luminosities and energies of e + e - collision data taken between $\sqrt{s}$=4.61 GeV and 4.95 GeV at BESIII*
From December 2019 to June 2021, the BESIII experiment collected approximately 5.85 fb -1 of data at center-of-mass energies between 4.61 and 4.95 GeV. This is the highest collision energy BEPCII has reached to date. The accumulated e + e - annihilation data samples are useful for studying charmonium(-like) states and charmed-hadron decays. By adopting a novel method of analyzing the production of $Λ^{+}_{c}$ $\overline{Λ}$ $^{-}_{c}$ pairs in e + e - annihilation, the center-of-mass energies are measured with a precision of ~0.6 MeV. Integrated luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha scattering. These measurements provide important inputs to analyses based on these data samples.
Observation of Resonance Structures in e + e − → π + π − ψ 2 ( 3823 ) and Mass Measurement of ψ 2 ( 3823 )
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Observation of η c ( 2 S ) → 3 ( π + π − ) and measurements of χ c J → 3 ( π + π − ) in ψ ( 3686 ) radiative transitions
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Amplitude analysis and branching fraction measurement of the decay $D_s^{+} → K^+π^+π^-$
Using 6.32 fb -1 of e + e - collision data collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis of the decay D$^+_s$ → K + π + π - and determine the amplitudes of the various intermediate states. The absolute branching fraction of D$^+_s$ → K + π + π - is measured to be (6.11 ± 0.18 stat. ± 0.11 syst. ) x 10 -3 . The branching fractions of the dominant intermediate processes D$^+_s$ → K + ρ 0 , ρ 0 → π + π - and D$^+_s$ → K*(892) 0 π + , K*(892) 0 → K + π - are determined to be (1.96 ± 0.19 stat . ± 0.23 syst. ) x 10 -3 and (1.85 ± 0.12 stat . ± 0.13 syst .) x 10 -3 , respectively. The intermediate resonances f 0 (500), f 0 (980), and f 0 (1370) are observed for the first time in this channel.
Observation of the double Dalitz decay η ′ → e + e − e + e −
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Measurement of the branching fraction of the doubly Cabibbo-suppressed decay D 0 → K + π − π 0 and search for D 0 → K + π − π 0 π 0
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Cross section measurements of the $e^+e^–$ → $D^{*+}D^{*–}$ and $e^+e^–$ → $D^{*+}D^{–}$ processes at center-of-mass energies from 4.085 to 4.600 GeV
The Born cross sections of the $e^+e^–$ → $D^{*+}D^{*–}$ and $e^+e^–$ → $D^{*+}D^{–}$ processes are measured using $e^+e^–$ collision data collected with the BESIII experiment at center-of-mass energies from 4.085 to 4.600 GeV, corresponding to an integrated luminosity of 15.7 fb -1 . The results are consistent with and more precise than the previous measurements by the Belle, Babar and CLEO collaborations. The measurements are essential for understanding the nature of vector charmonium and charmonium-like states.
Search for X ( 3872 ) → π 0 χ c 0 and X ( 3872 ) → π π χ c 0 at BESIII
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Measurement of the e + e − → ω π 0 π 0 cross section at center-of-mass energies from 2.0 to 3.08 GeV
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