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Now showing items 11-20 of 27
Observation of the Psi(1(3)D(2)) State in e(+)e(-) -> pi(+)pi(-)gamma chi(c1) at BESIII
(American Physical Society, 2015)
We report the observation of the X(3823) state in the process e+e-??+?-X(3823)??+?-??c1with a statistical significance of 6.2?, in data samples at center-of-mass energies s ?s=4.230, 4.260, 4.360, 4.420, and 4.600 GeV ...
Study of ?cJ decaying into K? (892) K ¯
(American Physical Society, 2015)
Using a data sample of 106 million ?(3686) events collected with the BESIII detector operated at the BEPCII storage ring, we study for the first time the decays ?cJ??KS0K±?? and ?cJ??K+K-?0 in the E1 radiative transition ...
Observation of the electromagnetic doubly OZI-suppressed decay J /? ???0
(American Physical Society, 2015)
Using a sample of 1.31 billion J/? events accumulated with the BESIII detector at the BEPCII collider, we report the observation of the decay J/????0, which is the first evidence for a doubly Okubo-Zweig-Iizuka suppressed ...
Search for the y (4140) via e+e- ???J /? at s =4.23, 4.26 and 4.36 GeV
(American Physical Society, 2015)
Using data samples collected at center-of-mass energies s=4.23, 4.26, and 4.36 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the production of the charmoniumlike state Y(4140) through a ...
Precision measurement of the D?0 decay branching fractions
(American Physical Society, 2015)
Using 482 pb-1 of data taken at s=4.009 GeV, we measure the branching fractions of the decays of D?0 into D0?0 and D0? to be B(D?0?D0?0)=(65.5±0.8±0.5)% and B(D?0?D0?)=(34.5±0.8±0.5)%, respectively, by assuming that the ...
Observation of Z(c)(3900)(0) in e(+)e(-) -> pi(0)pi(0) J/Psi
(American Physical Society, 2015)
Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Zc(39000)0 with a significance of 10.4?. The mass and width are measured to be 3894.8 ± 2.3 ± 3.2 ...
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. ...
Amplitude analysis of the ? 0 ? 0 system produced in radiative J=? decays
(American Physical Society, 2015)
An amplitude analysis of the ? 0 ? 0 system produced in radiative J=? decays is presented. In particular, a piecewise function that describes the dynamics of the ? 0 ? 0 system is determined as a function ofM? 0 ? 0 from ...
Search for Z(c)(3900)(+/-) -> omega pi(+/-)
(American Physical Society, 2015)
The decay Zc(3900)±???± is searched for using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies s=4.23 and 4.26 GeV. No significant signal for the Zc(3900)± is ...
Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
(Institute of Physics Publishing, 2015)
From December 2011 to May 2014, about 5 fb-1 of data were taken with the BESIII detector at center-of-mass energies between 3.810 GeV and 4.600 GeV to study the charmonium-like states and higher excited charmonium states. ...
