ORCID "0000-0002-9177-1286" Fakülteler için listeleme
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Cross Sections for the Reactions e(+)e(-) -> K+ K- pi(+)pi(-) (x0), K+K-K+K- (pi(0)), pi(+)pi(-)pi(+)pi(-) (x(0)), pp over bar pi(+)pi(-) (pi(0)) in the Energy Region Between 3.773 and 4.600 GeV
Kolcu, Onur Buğra; BESIII Collaboration (Amer Physical Soc., 2021)Using the data samples collected in the energy range from 3.773 to 4.600 GeV with the BESIII detector at the BEPCII collider, we measure the dressed cross sections as a function of center-of-mass energy for e(+)e(-) -> ... -
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 ...