Search
Now showing items 1-10 of 33
Measurement of A baryon polarization in e(+) e(-) -> Lambda(Lambda)over-bar at root s=3.773 GeV
(AMER PHYSICAL SOC, 2022)
Using a data sample of psi(3770) events collected with the BESIII detector at BEPCII corresponding to an integrated luminosity of 2.9 fb-1, we report a measurement of A spin polarization in e+ e- -> Lambda(Lambda) over bar ...
Search for a CP-odd light Higgs boson in J/psi -> gamma A(0)
(AMER PHYSICAL SOC, 2022)
Using J/psi radiative decays from 9.0 billion J/psi events collected by the BESIII detector, we search for di-muon decays of a CP-odd light Higgs boson (A(0)), predicted by many new physics models beyond the Standard Model, ...
Study of the processes chi(cJ) -> Xi(-)(Xi)over-bar(+) and Xi(0)(Xi)over-bar(0)
(SPRINGER, 2022)
Using 448.1 x 10(6) psi(3686) decays collected with the BESIII detector at the BEPCII e(+)e(-) storage rings, the branching fractions and angular distributions of the decays chi(cJ) -> Xi(-)(Xi) over bar (+) and Xi(0)(Xi) ...
Measurement of the absolute branching fraction of the singly cabibbo suppressed decay Λc+ →pη′
(American Physical Society, 2022)
The singly Cabibbo suppressed decay Λc+→pη′ is measured using 4.5 fb-1 of e+e-collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. Evidence for Λc+→pη′ with a ...
Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi
(IOP Publishing Ltd, 2022)
The cross sections of e(+)e(-) -> K+K- J/psi at center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb(-1) data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant ...
Measurement of e+e- →π+π-D+D- cross sections at center-of-mass energies from 4.190 to 4.946 GeV
(American Physical Society, 2022)
Using data samples collected with the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the e+e-→π+π-D+D- process at center-of-mass energies from 4.190 to 4.946 GeV with a partial ...
Amplitude analysis and branching fraction measurement of the decay D-s(+) -> pi(+)pi(0)pi(0)
(SPRINGER, 2022)
Using a data set corresponding to an integrated luminosity of 6.32fb(-1) recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the decay D-s(+) -> pi(+)pi(0)pi(0 ...
Observation of ηc (2S) →3 (π+π-) and measurements of χcJ →3 (π+π-) in ψ (3686) radiative transitions
(American Physical Society, 2022)
The hadronic decay ηc(2S)→3(π+π-) is observed with a statistical significance of 9.3 standard deviations using (448.1±2.9)×106 ψ(3686) events collected by the BESIII detector at the BEPCII collider. The measured mass and ...
Measurement of the e(+) e(-) -> omega pi(0)pi(0) cross section at center-of-mass energies from 2.0 to 3.08 GeV
(AMER PHYSICAL, 2022)
The cross section of the process e(+)e(-) -> omega pi(0)pi(0) is measured at nineteen center-of-mass energies from 2.0 to 3.08 GeV using data collected with the BESIII detector at the BEPCII storage ring. A resonant structure ...
Precise measurements of decay parameters and CP asymmetry with entangled Λ- Λ ¯ pairs
(American Physical Society, 2022)
Based on 10 billion J/ψ events collected at the BESIII experiment, a search for CP violation in Λ decay is performed in the difference between CP-odd decay parameters α- for Λ→pπ- and α+ for Λ¯→p¯π+ by using the process ...