W. Wang

Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays $D^+\to K^+π^0$, $D^+\to K^+η$ and $D^+\to K^+η^{\prime}$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773\,GeV with the BESIII detector, we present the measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays $D^+\to K^+π^0$, $D^+\to K^+η$ and $ D^+ \to K^+ η^{\prime}$ …

Precise Measurement of the $χ_{c0}$ Resonance Parameters and Branching Fractions of $χ_{c0,c2}\toπ^+π^-/K^+K^-$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

By analyzing a $ψ(3686)$ data sample containing $(107.7\pm0.6)\times10^{6}$ events taken with the BESIII detector at the BEPCII storage ring in 2009, the $χ_{c0}$ resonance parameters are precisely measured using $χ_{c0,c2} \to π^+π^-/K^+K^-$ events. The mass of $χ_{c0}$ is determined to be $M(χ_{c0})=(3415.63\pm0.07\pm0.07\pm0.07$)~MeV/$c^2$, …

Amplitude analysis and branching fraction measurement of the Cabibbo-favored decay $D^+ \to K^-π^+π^+π^0$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

An amplitude analysis of the Cabibbo-favored decay $D^+ \to K^-π^+π^+π^0$ is performed, using 7.93 $\rm{fb}^{-1}$ of $e^+e^-$ collision data collected with the BESIII detector at the center-of-mass energy of 3.773 GeV. The branching fractions of the intermediate processes are measured, with the …

Measurement of the Inclusive Cross Sections of Prompt $J/ψ$ and $ψ(3686)$ Production in $e^{+}e^{-}$ Annihilation from $\sqrt{s}=3.808$ to $4.951$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres

The inclusive cross sections of prompt $J/ψ$ and $ψ(3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb$^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BESIII detector operating at the BEPCII storage ring. The …

Measurement of cross sections of $e^+e^-\to K^0_S K^0_S ψ(3686)$ from $\sqrt{s}=$ 4.682 to 4.951 GeV

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

The process $e^+e^-\to K^0_S K^0_S ψ(3686)$ is studied by analyzing $e^+e^-$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with the BESIII detector operating at the BEPCII collider, corresponding to an integrated luminosity of $4.1~{\rm fb}^{-1}$. …

Study of the light scalar $a_{0}(980)$ through the decay $D^{0} \to a_{0}(980)^-e^{+} \nu_{e}$ with $a_{0}(980)^- \to \eta \pi^-$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

Differential decay rate in $D^0\to a_0(980)^-(\to\eta\pi^-) e^+\nu_e$. Data from table in paper. NUMERICAL VALUES HAVE BEEN DIGITISED FROM THE PAPER.

Measurement of the branching fraction of $D^+ \to τ^+ν_τ$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

By analyzing $e^{+}e^{-}$ collision data with an integrated luminosity of 7.9~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV, the branching fraction of $D^+\toτ^+ν_τ$ is determined as $\mathcal{B}=(9.9\pm 1.1_\mathrm{stat}\pm 0.5_\mathrm{syst})\times10^{-4}$. Taking the most precise result $\mathcal{B}(D^+\toμ^+ν_μ)=(3.981\pm 0.079_\mathrm{stat}\pm0.040_\mathrm{syst})\times10^{-4}$, we determine …

Precision Measurement of the Branching Fraction of $D^{+}\to μ^{+}ν_μ$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

Using $20.3~\mathrm{fb}^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of $E_{\rm c.m.}=3.773$ GeV with the BESIII detector operating at the BEPCII collider, we determine the branching fraction of the leptonic decay $D^+\toμ^+ν_μ$ to be $(4.034\pm0.080_{\rm stat}\pm0.040_{\rm syst})\times10^{-4}$. Interpreting our measurement …

Search for the massless dark photon with $D^0\toωγ'$ and $D^0\toγγ'$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

Using $7.9~\rm{fb^{-1}}$ of $e^+e^-$ collision data collected at $\sqrt{s}=3.773$ GeV with the BESIII detector at the BEPCII collider, we search for the massless dark photon with the flavor-changing neutral current processes $D^0\toωγ'$ and $D^0\toγγ'$ for the first time. No significant signals are …

Improved measurement of the branching fraction of hc → γη′/η and search for hc → γπ0

M. Ablikim, Mikhail N. Achasov, P. Adlarson, O. Afedulidis et autres

A bstract The processes h c → γP ( P = η ′ , η, π 0 ) are studied with a sample of (27 . 12 ± 0 . 14) × 10 8 ψ (3686) events collected by the BESIII detector …

ru, se, de, cn, it, pl, us, tr, kr (code pays fourni par la source)

Measurement of the Branching Fraction of \boldmath{$ψ(2S) \to γπ^0$}

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

Based on $(2712.4\pm14.1)\times10^{6}~ψ(2S)$ events, 7.9 fb$^{-1}$ $ψ(3773)$ data, and 0.8 fb$^{-1}$ off-resonance data samples collected with the BESIII detector, we measure the branching fraction of $ψ(2S)\rightarrowγπ^{0}$ and $e^{+}e^{-}\rightarrowγπ^{0}$ form factor at momentum transfers $Q^{2}\sim13$ GeV$^{2}$. The $e^{+}e^{-}\rightarrowγπ^{0}$ cross section is fitted with …

Measurements of the branching fractions of semileptonic $D^{+}_s$ decays via $e^+e^-\to D_s^{*+}D_s^{*-}$

BESIII Collaboration, M. Ablikim, Mikhail N. Achasov, P. Adlarson et autres

We measure the absolute branching fractions of semileptonic $D^+_s$ decays via the $e^+e^-\to D_s^{*+}D_s^{*-}$ process using $e^+e^-$ collision data corresponding to an integrated luminosity of $10.64~\mathrm{fb}^{-1}$ collected by the BESIII detector at center-of-mass energies between 4.237 and 4.699 GeV. The branching fractions …