Yayın tarihi için Elektrik-Elektronik Mühendisliği Bölümü Makale Koleksiyonu listeleme
Toplam kayıt 272, listelenen: 241-260
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Observation of J/Psi Electromagnetic Dalitz Decays to X(1835), X(2120), and X(2370)
(American Physical Society, 2022)Using a sample of about 1010 J/ψ events collected at a center-of-mass energy s=3.097 GeV with the BESIII detector, the electromagnetic Dalitz decays J/ψ→e+e-π+π-η′, with η′→γπ+π- and η′→π+π-η, have been studied. The decay ... -
Observation of a State X(2600) in the pi(+) pi(-)eta' System in the Process J/psi -> gamma pi(+)pi(-)eta'
(American Physical Society, 2022)Based on (10087±44)×106 J/ψ events collected with the BESIII detector, the process J/ψ→γπ+π-η′ is studied using two largest decay channels of the η′ meson, η′→γπ+π- and η′→ηπ+π-, η→γγ. A new resonance, which we denote as ... -
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 ... -
Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi
(IOP Publishing Ltd, 2022)The cross sections of e(+)e(-) -> K+K- J/psi at center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb(-1) data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant ... -
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 ... -
Measurement of integrated luminosities at BESIII for data samples at center-of-mass energies between 4.0 and 4.6 GeV*
(IOP Publishing Ltd, 2022)The integrated luminosities of data samples collected in the BESIII experiment in 2016-2017 at center-of-mass energies between 4.19 and 4.28 GeV are measured with a precision better than 1% by analyzing large-angle Bhabha ... -
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 ... -
Approximations to the 3-D Free Space Scalar Green's Function in Terms of the Taylor Product Theorem
(Institute of Electrical and Electronics Engineers Inc., 2022)In electromagnetics and acoustics, difficulties are encountered in evaluations of integrals containing the free space scalar Green's Function (, ′). So-called far-field approximations have long been used for obtaining ... -
Evaluation of the Remainders of a Class of Series by Using Saddle Point Method
(Institute of Electrical and Electronics Engineers Inc., 2022)Remainders of various forms of series expressions of a function F(x), which arises frequently in the high frequency solutions of electromagnetic wave radiation and scattering problems, are transformed into some integrals. ... -
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 ... -
3D EM data driven surrogate based design optimization of traveling wave antennas for beam scanning in X-band: an application example
(WINEF, 2022)In this paper, design and optimization of a microstrip elliptic traveling wave antenna (TWA) are presented for the beam scanning in X-band as an application of 3D data driven surrogate based design optimization technique. ... -
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 ... -
Amplitude analysis and branching fraction measurement of the decay Ds+ → K+ π + π − π 0
(Springer Science and Business Media Deutschland GmbH, 2022)The singly Cabibbo-suppressed decay Ds+ → K+π+π−π0 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 ... -
Amplitude analysis and branching fraction measurement of the decay Ds+ → K + π + π −
(Springer Science and Business Media Deutschland GmbH, 2022)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 Ds+→ K+π+π− and determine the amplitudes ... -
Amplitude analysis and branching fraction measurement of the decay Ds+ → π + π 0 π 0
(Springer Science and Business Media Deutschland GmbH, 2022)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 Ds+ → π+π0π0 is performed, ...