Başlık için listeleme
Toplam kayıt 2994, listelenen: 1683-1702
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Measurement of the e+e- ??J /? cross section and search for e+e- ??0J /? at center-of-mass energies between 3.810 and 4.600 GeV
(American Physical Society, 2015)Using data samples collected with the BESIII detector operating at the BEPCII collider at 17 center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of e+e-??J/? and ?0J/?. The Born cross sections of these two ... -
Measurement of the e+e- › ?+?- cross section between 600 and 900 MeV using initial state radiation
(Elsevier, 2016)We extract the e+e-›?+?- cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb-1 taken at a center-of-mass energy ... -
Measurement of the form factors in the decay D+ ??e+?e and search for the decay D+ ??e+?e
(American Physical Society, 2015)Using 2.92 fb-1 of electron-positron annihilation data collected at a center-of-mass energy of s=3.773 GeV with the BESIII detector, we present an improved measurement of the branching fraction B(D+??e+?e)=(1.63±0.11±0.08)×10-3. ... -
Measurement of the integrated Luminosities of cross-section scan data samples around the psi(3770) mass region
(Iop Publishing, 2018)To investigate the nature of the psi(3770) resonance and to measure the cross section for e(+)e(-) -> D (D) over bar, a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 ... -
Measurement of the leptonic decay width of J/psi using initial state radiation
(Elsevier, 2016)Using a data set of 2.93 fb(-1) taken at a center-of-mass energy of root s = 3.773 GeV with the BESIII detector at the BEPCII collider, we measure the process e(+) e(-) -> J/psi gamma -> mu(+)mu(-)gamma and determine the ... -
Measurement of the matrix elements for the decays eta -> pi(+)pi(-)pi(0) and eta/eta ' -> pi(0)pi(0)pi(0)
(American Physical Society, 2015)Based on a sample of 1.31×109 J/? events collected with the BESIII detector at the BEPCII collider, Dalitz plot analyses of selected 79,625 ???+?-?0 events, 33,908 ???0?0?0 events, and 1,888 ????0?0?0 events are performed. ... -
Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)
(Amer Physical Soc., 2018)Based on a sample of 1.31 x 10(9) J/psi events collected with the BESIII detector, the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0) are determined using 351,016 eta' -> (eta -> gamma ... -
Measurement of the phase between strong and electromagnetic amplitudes of J/Psi decays
(Elsevier Science, 2019)Using 16 energy points of e(+) e(-) annihilation data collected in the vicinity of the J/Psi resonance with the BESIII detector and with a total integrated luminosity of around 100 pb(-1), we study the relative phase between ... -
Measurement of the proton form factor by studying e+e- ?p p ¯
(American Physical Society, 2015)Using data samples collected with the BESIII detector at the BEPCII collider, we measure the Born cross section of e+e-?pp¯ at 12 center-of-mass energies from 2232.4 to 3671.0 MeV. The corresponding effective electromagnetic ... -
Measurement of yCP in D0-D0 oscillation using quantum correlations in e+e- ? D0D0 at ?s = 3.773 GeV
(Elsevier B.V., 2015)We report a measurement of the parameter yCP in D0-D-0 oscillations performed by taking advantage of quantum coherence between pairs of D0D-0 mesons produced in e+e- annihilations near threshold. In this work, doubly-tagged ... -
Measurements of ? (3686) ?k- ? ? ¯ ++ c. c. and ? (3686) ??K- ? ? ¯ ++ c. c.
(American Physical Society, 2015)Using a sample of 1.06×108?(3686) events produced in e+e- collisions at s=3.686 GeV and collected with the BESIII detector at the BEPCII collider, we present studies of the decays ?(3686)?K-??¯++c.c. and ?(3686)??K-??¯++c.c.. ... -
Measurements of absolute branching fractions for D mesons decays into two pseudoscalar mesons
(Amer Physical Soc., 2018)Using a data sample of e(+)e(-) collision data with an integrated luminosity of 2.93 fb(-1) taken at the center-of-mass energy root s = 3.773 GeV with the BESIII detector operating at the BEPCII storage rings, we measure ... -
Measurements of absolute branching fractions for Lambda(+)(c) -> Xi K-0(+) and Xi(1530)K-0(+)
(Elsevier Science Bv., 2018)We report the first measurements of absolute branching fractions for the W-exchange-only processes Lambda(+)(c) -> Xi K-0(+) and Lambda(+)(c)-> Xi(1530)K-0(+) with the double-tag technique, by analyzing an e(+)e(-) collision ... -
Measurements of Absolute Branching Fractions of D-0 -> K-L(0)phi, K-L(0)eta, K-L(0)omega, and K-L(0)eta '
(Amer Physical Soc., 2022)We report the first measurements of the absolute branching fractions of D-0 -> K-L(0)phi, D-0 -> K-L(0)eta, D-0 -> K-L(0)omega, and D-0 -> K-L(0)eta', by analyzing 2.93 fb(-1) of e(+) e(-) collision data taken at a ... -
Measurements of Absolute Branching Fractions of Fourteen Exclusive Hadronic D Decays to eta
(Amer Physical Soc., 2020)Using 2.93 fb(-1) of e(+)e(-) collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we report the first measurements of the absolute branching fractions of 14 hadronic D0(+) decays to ... -
Measurements of cross section of e+e??pp¯?0 at center-of-mass energies between 4.008 and 4.600 GeV
(Elsevier B.V., 2017)Based on e+e? annihilation data samples collected with the BESIII detector at the BEPCII collider at 13 center-of-mass energies from 4.008 to 4.600 GeV, measurements of the Born cross section of e+e??pp¯?0 are performed. ... -
Measurements of e(+) e(-) -> eta(c)pi(+)pi(-)pi(0), eta(c)pi(+)pi(-), and eta(c)pi(0)gamma at root s from 4.18 to 4.60 GeV, and search for a Z(c) state close to the D(D)over-bar threshold decaying to eta(c)pi at root s=4.23 GeV
(Amer Physical Soc., 2021)We study eta(c) production at center-of-mass energies root s from 4.18 to 4.60 GeV in e(+)e(-) annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding to 7.3 fb(-1) of ... -
Measurements of e(+)e(-)-> (KSK +/-)-K-0 pi(-/+)pi(0)and (KSK +/-)-K-0 pi(-/+)eta at center-of-mass energies from 3.90 to 4.60 GeV
(Amer Physical Soc., 2019)Using 5.2 fb(-1) e(+)e(-) annihilation data samples collected with the BESIII detector, we measure the cross sections of e(+)e(-)->(KSK +/-)-K-0 pi(-/+)pi(0) and (KSK +/-)-K-0 pi(-/+)eta at center-of-mass energies from ... -
Measurements of Sigma(+) and Sigma(-) time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV
(Elsevier, 2021)The Born cross sections of the e(+)e(-) -> Sigma(+)(Sigma) over bar (-) and e(+)e(-)-> Sigma(-)(Sigma) over bar (+) processes are determined for centerof-mass energy from 2.3864 to 3.0200 GeV with the BESIII detector. The ...
