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Now showing items 1-10 of 87
Precision measurements of B[psi(3686) -> pi(+)pi(-)J/psi] and B[J/psi -> l(+)l(-)]
(American Physical Society, 2013-08-12)
Based on (106.41 +/- 0.86) x 10(6) psi(3686) events collected with the BESIII detector at the BEPCII collider, the branching fractions of psi(3686) -> pi(+)pi(-)J/psi, J/psi -> e(+)e(-), and J/psi -> mu(+)mu(-) are measured. ...
Search for baryonic decays of c psi(3770) and psi(4040)
(American Physical Society, 2013-06-21)
By analyzing data samples of 2.9 fb(-1) collected at root s = 3.773 GeV, 482 pb(-1) collected at root s = 4.009 GeV and 67 pb(-1) collected at root s = 3.542, 3.554, 3.561, 3.600 and 3.650 GeV with the BESIII detector at ...
Observation of the decay psi(3686) -> Lambda(Sigma)over-bar(+/-) pi(-/+) + c.c
(American Physical Society, 2013-12-13)
Using a sample of 1:06 X 10(8) psi(3686) events collected with the BESIII detector, we present the first observation of the decays of psi(3686) -> Lambda(Sigma) over bar (+) pi(-) + c.c. and psi(3686) -> Lambda(Sigma) over ...
Observation of a charged charmoniumlike structure Z(c) (4020) and search for the Z(c) (3900) in e(+)e(-) -> pi(+) pi(-)h(c)
(American Physical Society, 2013-12-10)
We study e(+)e(-) -> pi(+) pi(-)h(c) at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections ...
Search for the lepton flavor violation process J/psi -> e mu at BESIII
(American Physical Society, 2013-06-17)
We search for the lepton-flavor-violating decay of the J/psi into an electron and a muon using (225.3 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector at the BEPCII. Four candidate events are found in the ...
Observation of e(+)e(-) -> pi(0)pi(0)h(c) and a neutral charmoniumlike structure z(c)(4020)(0)
(American Physical Society, 2014-11-18)
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of root s = 4.23, 4.26, and 4.36 GeV, we observe e(+)e(-) -> pi(0)pi(0)h(c) for the first time. ...
Precision measurement of the D*(0) decay branching fractions
(American Physical Society, 2015-02-06)
Using 482 pb(-1) of data taken at root s = 4.009 GeV, we measure the branching fractions of the decays of D*(0) into D-0 pi(0) and D-0 gamma to be B(D*(0) -> D-0 pi(0)) = (65.5 +/- 0.8 +/- 0.5)% and B(D*(0) -> D0 gamma) = ...
Observation of a structure at 1.84 GeV/c(2) in the 3(pi(+)pi(-)) mass spectrum in J/psi -> gamma 3(pi(+) pi(-)) decays
(American Physical Society, 2013-11-14)
With a sample of 225.3 x 10(6) J/psi events taken with the BESIII detector, the decay J/psi -> gamma 3(pi(+) pi(-)) is analyzed. A structure at 1.84 GeV/c(2) is observed in the 3(pi(+) pi(-)) invariant mass spectrum with ...
Study of c (3686) -> omega K(K)over-bar pi decays
(American Physical Society, 2013-05-20)
Based on 106 million c d3686_ events collected with the BESIII detector at the BEPCII, the decay psi(3686) -> omega K (K) over bar pi is studied. Enhancements around 1.44 GeV/c(2) and the f1(1285) are observed in the mass ...
Observation of a charged charmoniumlike structure in e(+)e(-) -> pi(+)pi(-) J/psi at root s=4.26 GeV
(American Physical Society, 2013-06-17)
We study the process e(+)e(-) -> pi(+)pi(-) J/psi at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross ...
