Yazar "Kolcu, O. B." için Mühendislik ve Mimarlık Fakültesi listeleme
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Observation of J/Psi Electromagnetic Dalitz Decays to X(1835), X(2120), and X(2370)
Ablikim, M.; Achasov M.N.; Adlarson P.; Ahmed S.; Albrecht M.; Kolcu, O. B. (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 the double Dalitz decay eta' -> e(+)e(-)e(+)e(-)
Ablikim M.; Achasov M.N.; Adlarson P.; Albrecht M.; Aliberti R.; Kolcu, O. B. (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 ψ(3770) → ηJ/ψ
Kolcu, O. B.; BESIII Collaboration (American Physical Society, 2023)Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, the Born cross section of the process e+e- -> eta J=psi at a center-of-mass energy pffisffi = 3.773 GeV is measured to be (8.88 ... -
Search for a massless dark photon in Λc+ →pγ′ decay
BESIII Collaboration; Kolcu, O. B. (American Physical Society, 2022)A search for a massless dark photon γ′ is conducted using 4.5 fb-1 of e+e- collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. No significant signal is observed, ... -
Search for C-parity violation in J/psi -> gamma gamma and gamma phi
BESIII Collaboration; Kolcu, O. B. (AMER PHYSICAL SOC, 2014)Using 1.06 x 10(8) psi(3686) events recorded in e(+)e(-) collisions at root s = 3.686 GeV with the BESIII at the BEPCII collider, we present searches for C-parity violation in J/psi -> gamma gamma and gamma phi decays via ... -
Study of the decay D+ -> K*(892)+ K-S(0) in D+ -> (K+KS0)pi(0)
Ablikim M.; Achasov M.N.; Adlarson P.; Ahmed S.; Albrecht M.; Kolcu, O. B. (American Physical Society, 2021)Based on an collision data sample corresponding to an integrated luminosity of collected with the BESIII detector at , the first amplitude analysis of the singly Cabibbo-suppressed decay is performed. From the amplitude ... -
Study of the h(c)(1(1)P(1)) meson via psi(2S) -> pi(0)h(c) decays at BESIII
BESIII Collaboration; Kolcu, O. B. (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 ...