ORCID "0000-0002-9177-1286" Elektrik-Elektronik Mühendisliği Bölümü Makale Koleksiyonu için listeleme
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Cryogenic X-ray crystallographic studies of biomacromolecules at Turkish Light Source "Turkish DeLight"
Atalay, Necati; Akcan, Enver Kamil; Gul, Mehmet; Ayan, Esra; Kolcu, O. B. (TUBITAK SCIENTIFIC, 2023)Abstract: X-ray crystallography is a robust and powerful structural biology technique that provides high-resolution atomic structures of biomacromolecules. Scientists use this technique to unravel mechanistic and structural ... -
Determination of Strong-Phase Parameters in D -> K-S,L(0)pi(+)pi(-)
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)We report the most precise measurements to date of the strong-phase parameters between D-0 and (D) over bar (0) decays to K-S,L(0)pi(+)pi(-) using a sample of 2.93 fb(-1) of e(+) e(-) annihilation data collected at a ... -
Determination of the Absolute Branching Fractions of D-0 -> K(-)e(+)nu(e) and D+ -> (K)over-bar(0)e(+)nu(e)
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2021)Using 2.93 fb(-1) of e(+)e(-) collision data collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we measure the absolute branching fractions of the decays D-0 -> K(-)e(+)nu(e) and D+ -> (K) over bar ... -
Determination of the Lambda(c)+ spin via the reaction e(+)e(-) -> Lambda(c)(Lambda)over-bar(c)
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2021)We report on a comparison of two possible Lambda(+)(c) spin hypotheses, J = 1/2 and 3/2, via the process e(+)e(-) -> Lambda(c)(Lambda) over bar (c) using the angular distributions of Lambda(+)(c) decays into pK(S)(0), ... -
Determination of the Pseudoscalar Decay Constant f(Ds)(+) via D-s(+) -> mu(+)nu(mu)
Kolcu, Onur Buğra (Amer Physic Soc., 2019)Using a 3.19 fb(-1) data sample collected at an e(+)e(-) center-of-mass energy of E-cm = 4.178 GeV with the BESIII detector, we measure the branching fraction of the leptonic decay D-s(+) -> mu(+)nu(mu) to be BDs+ -> mu+nu ... -
Direct Measurement of the Branching Fractions B(psi(3686) -> J/psi X) and B(psi(3770) -> J/psi X), and Observation of the State R(3760) in e(+)e(-) -> J/psi X
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2021)We report a measurement of the observed cross sections of e(+)e(-) -> J/psi X based on 3.21 fb(-1) of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. In analysis ... -
Evidence of a Resonant Structure in the e(+) e(-) -> pi(+) (DD)-D-0*(-) Cross Section between 4.05 and 4.60 GeV
Kolcu, Onur Buğra (Amer Physic Soc., 2019)The cross section of the process e(+) e(-) -> pi(+) (DD)-D-0*(-) for center-of-mass energies from 4.05 to 4.60 GeV is measured precisely using data samples collected with the BESIII detector operating at the BEPCII storage ... -
First Measurement of Polarizations in the Decay D-0 -> omega phi
Kolcu, Onur Buğra; BESIII Collaboration (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 ... -
First Measurement of the Form Factors in D-s(+) -> K(0)e(+)nu(e) and D-s(+) -> K*(0)e(+)nu(e) Decays
Kolcu, Onur Buğra (Amer Physic Soc., 2019)We report on new measurements of Cabibbo-suppressed semileptonic D-s(broken vertical bar) decays using 3.19 fb(-1) of e(broken vertical bar)e(-) annihilation data sample collected at a center-of-mass energy of 4.178 GeV ... -
First measurements of chi(cJ) -> Sigma(-)(Sigma)over-bar(+) (J=0,1,2) decays
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)We measured the branching fractions of the decays chi(cJ) -> Sigma(-)(Sigma) over bar (+) for the first time using the final states n (n) over bar pi(+)pi(-). The data sample exploited here is 448.1 x 10(6) psi(3686) events ... -
First Observation of D+ -> eta mu(+)nu(mu) and Measurement of Its Decay Dynamics
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)By analyzing a data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we measure for the first time the absolute branching fraction ... -
First Observation of the Direct Production of the chi(c1) in e(+)e(-) Annihilation
BESIII Collaboration; Kolcu, O. B. (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 ... -
Future Physics Programme of BESIII
BESIII Collaboration; Kolcu, Onur Buğra (IOP Publishing, 2020)There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESIII and B factories, ... -
Improved model-independent determination of the strong-phase difference between D-0 and (D)over-bar(0) -> (KS,LK+)-K-0 K- decays
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)We present a measurement of the strong-phase difference between D-0 and (D) over bar (0) -> (KS,LK+K-)-K-0 decays, performed through a study of quantum-entangled pairs of charm mesons. The measurement exploits a data sample ... -
Inclusive charged and neutral particle multiplicity distributions in chi(cJ) and J/psi decays
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)Using a sample of 106 million psi(3686) decays, psi(3686) -> gamma chi(cJ) (J = 0, 1, 2) and psi(3686) -> gamma chi(cJ), chi(cJ) -> gamma J/psi (J = 1, 2) events are utilized to study inclusive chi(cJ )-> anything, chi(cJ ... -
Measurement of branching fractions of psi(3686) -> phi eta ', phi f(1) (1285) and phi eta(1405)
BESIII Collaboration; Kolcu, O. B. (AMER PHYSICAL SOC, 2019)Using a sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector, we perform a study of the decay psi(3686) -> phi pi(+)pi(-)eta. The branching fraction of psi(3686) -> phi eta' is determined to be (1.51 ... -
Measurement of Cross Section for e(+)e(-) -> Xi(-)(Xi)over-bar(+) Near Threshold at BESIII
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2021)The Born cross sections and effective form factors for process e(+)e(-) -> Xi(-)(Xi) over bar (+) are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total integrated luminosity of 363.9 pb(-1 ... -
Measurement of Cross Section for e(+)e(-) -> Xi(0)(Xi)over-bar(0) Near Threshol
BESIII Collaboration; Kolcu, Onur Buğra (Elsevier, 2021)Using e(+)e(-) collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector at BEPCII and corresponding to an integrated luminosity of about 500 pb(-1), we measure the cross ... -
Measurement of cross sections for e(+) e(-) -> mu(+) mu(-) at center-of-mass energies from 3.80 to 4.60 GeV
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2020)The observed cross sections for e(+)e(-) -> mu(+) mu(-) at energies from 3.8 to 4.6 GeVare measured using data samples taken with the BESIII detector operated at the BEPCII collider. We measure the muonic widths and determine ... -
Measurement of e(+) e(-) -> K+ K- cross section at root s=2.00-3.08 GeV
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 04.02.2019)The cross section of the process e(+) e(-) -> K+ K- is measured at a number of center-of-mass energies root s from 2.00 to 3.08 GeV with the BESIII detector at the Beijing Electron Positron Collider (BEPCII). The results ...