Ara
Toplam kayıt 49, listelenen: 21-30
Observation of psi(3686) -> p(p)over-bar phi
(American Physical Society, 2019)
Using a data sample of 4.48×108 ?(3686) events collected with the BESIII detector, we present a first observation of ?(3686)?pp ?, and we measure its branching fraction to be [6.06±0.38(stat)±0.48(syst)]×10-6. In contrast ...
Polarization and entanglement in baryon–antibaryon pair production in electron–positron annihilation
(Nature Publishing Group, 2019)
Particles directly produced at electron–positron colliders, such as the J/? meson, decay with relatively high probability into a baryon–antibaryon pair1. For spin-1/2 baryons, the pair can have the same or opposite helicites. ...
Observation of OZI-suppressed decays chi(cJ) -> omega phi
(Amer Physic Soc., 2019)
Decays chi(cJ)(J = 0, 1, 2) -> omega phi are studied using (448.1 +/- 2.9) x 10(6)psi(3686) events collected with the BESIII detector in 2009 and 2012. In addition to the previously established chi(c0) -> omega phi, the ...
Search for a strangeonium-like structure Z(s) decaying into phi pi and a measurement of the cross section e(+)e(-) -> phi pi pi
(Amer Physical Soc., 2019)
Using a data sample of e(+)e(-) collision data corresponding to an integrated luminosity of 108 pb(-1) collected with the BESIII detector at a center-of-mass energy of 2.125 GeV, we study the process e(+)e(-) -> phi pi pi ...
Observation of D-s(+) -> p(n)over-bar and confirmation of its large branching fraction
(Amer Physic Soc., 2019)
The baryonic decay D-s(+) -> p (n) over bar is observed, and the corresponding branching fraction is measured to be (1.21 +/- 0.10 +/- 0.05) x 10(-3), where the first uncertainty is statistical and second systematic. The ...
Study of electromagnetic Dalitz decays chi(cJ )-> mu(+)mu(-) J/psi
(Amer Physic Soc., 2019)
Using 4.48 x 10(8) psi(3686) events collected with the BESIII detector, we search for the decays chi(cJ) ->mu(+)mu(- )J/psi through the radiative decays psi(3686) -> gamma chi(cJ), where J = 0, 1, 2. The decays chi(c1,2) ...
Study of the decay D-0 -> (K)over-bar(0)pi(-)e(+)nu(e)
(Amer Physical Soc., 2019)
We report a study of the decay D-0 -> (K) over bar (0)pi(-)e(+)nu(e) based on a sample of 2.93 fb(-1) e(+)e(-) annihilation data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII ...
Observation of e(+) e(-) -> eta Y(2175) at center-of-mass energies above 3.7 GeV
(Amer Physic Soc., 2019)
The state Y(2175) is observed in the process e(+)e(-) -> eta Y(2175) with a statistical significance larger than 10 standard deviations using the data collected with the BESIII detector operating at the BEPCII storage ring ...
Observation of e(+)e(-)-> D-s(+)(D)over-bar(()*()0) K- and study of the P-wave D-s mesons
(IOP Publishing, 2019)
Studies of e(+)e(-)-> D-s(+)(D) over bar (()*K-)0(-) and the p-wave charmed-strange mesons are performed based on an e(+)e(-) collision data sample corresponding to an integrated luminosity of 567 pb(-1) collected with the ...
Precision Measurement of the Branching Fractions of eta ' Decays
(Amer Physic Soc., 2019-04-09)
Based on a sample of (1310.6 +/- 7.0) x 10(6)J/psi events collected with the BESIII detector, we present measurements of J=. and. 0 absolute branching fractions using the process J/psi -> gamma eta'. By analyzing events ...