Ara
Toplam kayıt 26, listelenen: 21-26
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 ...
Confirmation of a charged charmoniumlike state Zc (3885)? in e+e- ??± (D D ¯ ?)? with double D tag
(American Physical Society, 2015)
We present a study of the process e+e-??±(DD¯?)? using data samples of 1092 pb-1 at s=4.23 GeV and 826 pb-1 at s=4.26 GeV collected with the BESIII detector at the BEPCII storage ring. With full reconstruction of the D ...
Observation of the dalitz decay ?’??e+e?
(American Physical Society, 2015)
We report the first observation of the Dalitz decay ?’??e+e?, based on a data sample of 1.31 billion J/? events collected with the BESIII detector. The ?’ mesons are produced via the J/????’ decay process. The ratio ...
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.. ...
Observation of the isospin-violating decay J /? ???0f0 (980)
(American Physical Society, 2015)
Using a sample of 1.31×109 J/? events collected with the BESIII detector at the BEPCII collider, the decays J/????+?-?0 and J/????0?0?0 are investigated. The isospin-violating decay J/????0f0(980) with f0(980)??? is observed ...
Study of decay dynamics and CP asymmetry in D+ ? KL0 e+?e decay
(American Physical Society, 2015)
Using 2.92 fb-1 of electron-positron annihilation data collected at s=3.773 GeV with the BESIII detector, we obtain the first measurements of the absolute branching fraction B(D+?KL0e+?e)=(4.481±0.027(stat)±0.103(sys))% ...