Engineering topics
Gilman, A.
Publications and source records attributed to Gilman, A..
Search for invisible decays of the Λ baryon
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Partial wave analysis of J / ψ → γ η ′ η ′
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Amplitude analysis and branching-fraction measurement of $\mathrm{D}^+_s$ → $π^+π^oη'$
Using data collected with the BESIII detector in $e^+e^-$ collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb -1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the $\mathrm{D}^+_s$ → $π^+π^oη'$ decay. We find that the dominant intermediate process is $\mathrm{D}^+_s$ →$ρ^+η'$ and the significances of other resonant and nonresonant processes are all less than 3σ. The upper limits on the branching fractions of S-wave and P-wave nonresonant components are set to 0.10% and 0.74% at the 90% confidence level, respectively. In addition, the branching fraction of the $\mathrm{D}^+_s$ → $π^+π^oη'$ decay is measured to be (6.15 ± 0.25(stat.) ± 0.18(syst.))%, which receives significant contribution only from $\mathrm{D}^+_s$ →$ρ^+η'$ according to the amplitude analysis.
Observation of the Singly Cabibbo Suppressed Decay Λ c + → n π +
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Study of the decay D s + → K S 0 K S 0 π + and observation of an isovector partner to f 0 ( 1710 )
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Observation of D 0 ( + ) → K S 0 π 0 ( + ) ω and improved measurement of D 0 → K − π + ω
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Study of light scalar mesons through D s + → π 0 π 0 e + ν e and K S 0 K S 0 e + ν e decays
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Search for baryon- and lepton-number violating decays D 0 → p ¯ e + and D 0 → p e −
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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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Measurement of the Cross Section for e + e − → Hadrons at Energies from 2.2324 to 3.6710 GeV
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Search for a C P -odd light Higgs boson in J / ψ → γ A 0
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Amplitude analysis and branching fraction measurement of the decay $D_s^{+}$ → $π^+π^0π^0$
Using a data set corresponding to an integrated luminosity of 6.32 fb –1 recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the decay $D_s^{+}$ → $π^+π^0π^0$ is performed, and the relative fractions and phases of different intermediate processes are determined. The absolute branching fraction of the decay $D_s^{+}$ → $π^+π^0π^0$ is measured to be (0.50 ± 0.04 stat ± 0.02 syst )%. The absolute branching fraction of the intermediate process $D_s^{+}$ → $f_o$(980)$π^+$, $f_o$(980) → $π^oπ^o$ is determined to be (0.28 ± 0.04 stat ± 0.04 syst )%.
First Measurement of Polarizations in the Decay D 0 → ω φ
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Measurement of Λ baryon polarization in e + e − → Λ Λ ¯ at s = 3.773 GeV
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Observation of the electromagnetic Dalitz decay D * 0 → D 0 e + e −
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Cross sections for the reactions e + e − → K + K − π + π − ( π 0 ) , K + K − K + K − ( π 0 ) , π + π − π + π − ( π 0 ) , p p ¯ π + π − ( π 0 ) in the energy region between 3.773 and 4.600 GeV
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Measurement of branching fractions of $J/\psi$ and $\psi$(3686) decays to $\Sigma^+$< and $\overline\Sigma^-$
Using 1310.6 x 10 6 J/ψ and 448.1 x 10 6 ψ(3686) events collected with the BESIII detector, the branching fractions of J/ψ decays to $Σ^+\overline{Σ}^-$ is measured to be (10.61 ± 0.04 ± 0.36) x 10 -4 , which is significantly more precise than the current world average. The branching fractions of ψ(3686) decays to $Σ^+\overline{Σ}^-$ is measured to be (2.52 ± 0.04 ± 0.09) x 10 -4 , which is consistent with the previous measurements. In addition, the ratio of $\mathcal{B}$(ψ(3686) → $Σ^+\overline{Σ}^-$)/$\mathcal{B}$(J/ψ → $Σ^+\overline{Σ}^-$) is determined to be (23.8 ± 1.1)% which violates the “12% rule”.