Results 41 to 50 of about 2,767,400 (208)

Observation of Ds+ K- and evidence for Ds+ pi- final states in neutral B decays [PDF]

open access: yes, 2002
We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B0bar -> Ds+ K- is found in a sample of 85 timse 10^6 B Bbar events, collected with the Belle detector at KEKB, with a branching fraction
A. Bay   +207 more
core   +1 more source

Measurement of the absolute branching fraction of $D^{+}\rightarrow\bar K^0 e^{+}\nu_{e}$ via $\bar K^0\to\pi^0\pi^0$ [PDF]

open access: yes, 2016
By analyzing 2.93 fb$^{-1}$ data collected at the center-of-mass energy $\sqrt s=3.773$ GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay $D^+\rightarrow\bar K^0 e^{+}\nu_{e}$ to be ${\mathcal B}(D ...
M. Ablikim   +421 more
semanticscholar   +1 more source

Measurement of the absolute branching fraction of D∗s0(2317)±→π0D±s [PDF]

open access: yes, 2017
The process e(+)e(-) -> D*D-+(s)*(s0) (2317)(-) + c.c. is observed for the first time with the data sample of 567 pb(-1) collected with the BESIII detector operating at the BEPCII collider at a center-of-mass energy root s = 4.6 GeV.
M. Ablikim   +433 more
semanticscholar   +1 more source

Measurement of the absolute branching fraction of Λc+→pKS0η decays

open access: yesPhysics Letters B, 2021
Based on 586 pb−1 of e+e− annihilation data collected at a center-of-mass energy of s=4.6GeV with the BESIII detector at the BEPCII collider, the absolute branching fraction of Λc+→pKS0η decays is measured for the first time to be B(Λc+→pKS0η)=(0.414±0 ...
M. Ablikim   +497 more
doaj   +1 more source

Measurement of the B0 →d∗-π+π-π+ branching fraction [PDF]

open access: yes, 2016
Using a sample of (470.9 +- 2.8) x 10^6 BB-bar pairs, we measure the decay branching fraction B(B^0 -> D^*- pi^+ pi^- pi^+) = (7.26 +- 0.11 +- 0.31) x 10^-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be
The BaBar Collaboration
semanticscholar   +1 more source

First measurement of the differential branching fraction and CP asymmetry of the B± → π±μ+μ− decay [PDF]

open access: yesJournal of High Energy Physics, 2015
The differential branching fraction with respect to the dimuon invariant mass squared, and the CP asymmetry of the B± → π±μ+μ− decay are measured for the first time. The CKM matrix elements |Vtd| and |Vts|, and the ratio |Vtd/Vts| are determined.
R. Aaij   +499 more
semanticscholar   +1 more source

Measurement of branching fractions of J/ψ and ψ(3686) decays to Σ+ and Σ ¯ $$ \overline{\Sigma} $$ −

open access: yesJournal of High Energy Physics, 2021
Using 1310.6 × 106 J/ψ and 448.1 × 106 ψ(3686) events collected with the BESIII detector, the branching fractions of J/ψ decays to Σ+ Σ ¯ $$ \overline{\Sigma} $$ − is measured to be (10.61 ± 0.04 ± 0.36) × 10 −4, which is significantly more precise than ...
The BESIII collaboration   +515 more
doaj   +1 more source

Measurement of the inclusive branching fraction for ψ(3686)→KS0+anything

open access: yesPhysics Letters B, 2021
Using 5.9 pb−1 of e+e− annihilation data collected at center-of-mass energies from 3.640 to 3.701 GeV with the BESIII detector at the BEPCII Collider, we measure the observed cross sections of e+e−→KS0X (where X=anything).
M. Ablikim   +493 more
doaj   +1 more source

Direct Decay of the Z^0 Boson into Ω_bcc and Ω_bbc Baryons [PDF]

open access: yesفیزیک کاربردی ایران
Electron-positron annihilation experiments are crucial tools for testing the Standard Model due to the simplicity and clarity of the initial state.
tawfigh Osati
doaj   +1 more source

Search for the decay h c → π 0 J/ψ

open access: yesJournal of High Energy Physics, 2022
A search for the decay h c → π 0 J/ψ is performed using a sample of hc produced in the reaction e + e − → π + π − h c . The data samples were collected with the BESIII detector at center-of-mass energies between 4.189 and 4.437 GeV, corresponding to a ...
The BESIII collaboration   +515 more
doaj   +1 more source

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