Ara
Toplam kayıt 23, listelenen: 11-20
Observation of the double Dalitz decay eta' -> e(+)e(-)e(+)e(-)
(Observation of the double Dalitz decay η′ →e+e-e+e-, 2022)
Based on (10087±44)×106 J/ψ events collected with the BESIII detector at BEPCII, the double Dalitz decay η′→e+e-e+e-is observed for the first time via the J/ψ→γη′ decay process. The significance is found to be 5.7σ with ...
Study of the resonance structures in the process e+e- →π+π-J/ψ
(American Physical Society, 2022)
Using about 23 fb-1 of data collected with the BESIII detector operating at the BEPCII storage ring, a precise measurement of the e+e-→π+π-J/ψ Born cross section is performed at center-of-mass energies from 3.7730 to 4.7008 ...
First Measurement of Polarizations in the Decay D-0 -> omega phi
(Amer Physical Soc., 2022)
Using a data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected at a center-of-mass energy root s = 3.773 GeV by the BESIII detector, the decay D-0 -> omega phi is observed for the first time. The ...
Measurement of the e(+)e(-) -> Sigma(0)(Sigma)over-bar(0) cross sections at center-of-mass energies from 2.3864 to 3.0200 GeV
(ELSEVIER, 2022)
The Born cross sections of e(+)e(-) -> Sigma(0)(Sigma) over bar (0) are measured at center-of-mass energies from 2.3864 to 3.0200 GeV using data samples with an integrated luminosity of 328.5 pb(-1) collected with the ...
BİR GÜNEŞ ENERJİ SİSTEMİNİN DAĞITIM SİSTEMİ GÜVENİLİRLİĞİNE ETKİLERİNİN İNCELENMESİ
(Süleyman Demirel Üniversitesi Mühendislik Fakültesi, 2022)
Günümüzde artan nüfus doğrultusunda talep edilen enerjinin de artmasıyla, alternatif enerji kaynaklarına yönelim artmıştır. Bu nedenle yenilenebilir enerji kaynaklarının (YEK) kullanımı gün geçtikçe artmakta ve özellikle ...
Design Optimization of Ultra-Wideband Vivaldi Antenna using Artificial Intelligence
(Applied Computational Electromagnetics Society (ACES), 2022)
In this work, computationally efficient design optimization of frequency selective surface (FSS)-loaded ultra-wideband Vivaldi antenna via the use of data-driven surrogate model is studied. The proposed design methodology ...
Surrogate-Based Design Optimization of Multi-Band Antenna
(Applied Computational Electromagnetics Society (ACES), 2022)
In this work, design optimization process of a multi-band antenna via the use of artificial neural network (ANN) based surrogate model and meta-heuristic optimizers are studied. For this mean, first, by using Latin-Hyper ...
Study of psi(3686) -> Lambda(Lambda)over-bar omega
(AMER PHYSICAL SOC, 2022)
Based on a data sample of (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector at the BEPCII collider, the branching fraction of psi(3686) -> Lambda(Lambda) over bar omega is measured to be (3.30 +/- ...
First Observation of the Direct Production of the chi(c1) in e(+)e(-) Annihilation
(AMER PHYSICAL SOC, 2022)
We study the direct production of the J(PC) = 1(++) charmonium state chi(c1)(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the chi(c1)(1P). The data were collected with the BESIII ...
Study of the h(c)(1(1)P(1)) meson via psi(2S) -> pi(0)h(c) decays at BESIII
(AMER PHYSICAL SOC, 2022)
Using 448 million psi(2S) events, the spin-singlet P-wave charmonium state h(c)(1(1)P(1)) is studied via the psi(2S) -> pi(0)h(c) decay followed by the h(c) -> gamma eta(c) transition. The branching fractions are measured ...