Yazar "Kolcu, Onur Buğra" için listeleme
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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 observations of h(c )-> hadrons
Kolcu, Onur Buğra (Amer Physic Soc., 2019-04-24)Based on (4.48 +/- 0.03) x 10(8) Psi(3686) events, collected with the BESIII detector at the BEPCII storage ring, five h(c) hadronic decays are searched for via the process Psi(3686) -> pi(0)h(c). Three of them, h(c) -> p ... -
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, ... -
An improved limit for ?ee of X(3872) and ?ee measurement of ?(3686)
The BESIII collaboration; Kolcu, Onur Buğra (Elsevier, 2015)Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e-??ISRX(3872)??ISR?+?-J/? via the Initial State Radiation technique. The ... -
Improved measurement of the absolute branching fraction of D+ -> (K)over-bar(0)mu(+)nu(mu)
Kolcu, Onur Buğra (Springer, 2016)By analyzing 2.93 fb(-1) of data collected at root s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction B(D+ -> (K) over bar (0) (+)(mu)nu(mu)) = (8.72 +/- 0.07(stat). +/- 0.18(sys).) %, which ... -
Improved measurements of branching fractions for eta(c) -> phi phi and omega phi
Kolcu, Onur Buğra (Amer Physical Soc., 2017)Using (223.7 +/- 1.4) x 10(6) J / Psi events accumulated with the BESIII detector, we study eta(c) decays to phi phi and omega phi final states. The branching fraction of n(c) -> phi phi is measured to be Br(eta(c) -> phi ... -
Improved measurements of two-photon widths of the chi(cJ) states and helicity analysis for chi(c2) -> gamma gamma
Kolcu, Onur Buğra (Amer Physical Soc., 2017)Based on 448.1 x 10(6) Psi(3686) events collected with the BESIII detector, the decays Psi(3686) -> gamma chi(cJ), chi(cJ) -> gamma gamma(J = 0, 1, 2) are studied. The decay branching fractions of chi(c0,2) -> gamma gamma ... -
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 ... -
Luminosity measurements for the R scan experiment at BESIII
Kolcu, Onur Buğra (Chinese Physical, 2017)By analyzing the large-angle Bhabha scattering events e(+)e(-) -> (gamma)e(+)e(-) and diphoton events e(+)e(-) -> (gamma)gamma gamma for the data sets collected at center-of-mass (c.m.) energies between 2.2324 and 4.5900 ... -
Measurement of azimuthal asymmetries in inclusive charged dipion production in e + e - annihilations at ? s = 3.65 GeV
Kolcu, Onur Buğra (APS Physics, 2016)We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e(+) e(-) -> pi pi X based on a data set of 62 pb(-1) at the center-of-mass energy of 3.65 GeV collected with the SESIII ... -
Measurement of B(J/psi -> eta ' e(+)e(-)) and search for a dark photon
Kolcu, Onur Buğra (Amer Physical Soc., 2019)Using a data sample of (1310.6 +/- 7.0) x 10(6) J/psi decay events collected with the BESIII detector at BEPCII, we study the electromagnetic Dalitz decay J/psi -> eta ' e(+)e(-) with two dominant eta' decay modes, eta' ... -
Measurement of B(psi(3770) -> gamma chi(c1)) and search for psi(3770) -> gamma chi(c2)
The BESIII collaboration; Kolcu, Onur Buğra (American Physical Society, 2015)We report a measurement of the branching fraction for ?(3770)???c1 and search for the transition ?(3770)???c2 based on 2.92 fb-1 of e+e- data accumulated at s=3.773 GeV with the BESIII detector at the BEPCII collider. We ... -
Measurement of branching fractions for psi(3686) -> gamma eta ', gamma eta, and gamma pi(0)
Kolcu, Onur Buğra (Amer Physical Soc., 2017)Using a data sample of 448 x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII storage ring, the decays psi(3686) -> gamma eta and psi(3686) -> gamma pi(0) are observed with a statistical ... -
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 cross sections of the interactions e(+)e(-) -> phi phi omega and e(+)e(-) -> phi phi phi at center-of-mass energies from 4.008 to 4.600 GeV
Kolcu, Onur Buğra (Elsevier Science, 2017)Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes e(+)e(-) -> phi phi omega and e(-)e(-) -> phi phi phi. The ...