Study of light scalar mesons through $D_s^{+}\to \ddot{I}{€}^0\ddot{I}{€}^0{e}^{+}\hat{I}{½}_e$ and $K_S^0{K}_S^0{e}^{+}\hat{I}{½}_e$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +498

Using 6.32~fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data recorded by the BESIII detector at center-of-mass energies between $4.178$ to $4.226$ GeV, we present the first measurement of the d…

Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +476

The Born cross section for the process $e^{+}{e}^{-}\to p\bar{p}$ is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets…

Measurement of the $D\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $D\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0$ coherence factors and average strong-phase differences in quantum-correlated $D\bar{D}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +505

The decays $D\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $D\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0$ are studied in a sample of quantum-correlated $D\bar{D}$ pairs produced through the process $e^+e^- \to ψ(3770) \to D\bar…

Measurements of the center-of-mass energies of $e^{+}{e}^{-}$ collisions at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

During the 2016-17 and 2018-19 running periods, the BESIII experiment collected 7.5~fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data at center-of-mass energies ranging from 4.13 to 4.44 GeV. T…

Measurement of the absolute branching fraction of $\hat{I}{›}_c^{+}\to p{K}_{\mathrm{S}}^0\hat{I}\cdot$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +490

Based on 586 $\mathrm{p}{\mathrm{b}}^{-1}$ of $e^{+}{e}^{-}$ annihilation data collected at a center-of-mass energy of $\sqrt{s}=4.6\mathrm{GeV}$ with the BESIII detector at the BEPCII collider, the absol…

Observation of the $X(2370)$ and search for the $X(2120)$ in $J/\ddot{I}ˆ\to {\hat{I}}^{3}K\bar{K}\hat{I}{\cdot }^{\prime }$

M. Ablikim, M. N. Achasov, P. Adlarson +473

Using a sample of $1.31\times 10^{9}J/\ddot{I}ˆ$ events collected with the BESIII detector, we perform a study of $J/\ddot{I}ˆ\to {\hat{I}}^{3}K\bar{K}\hat{I}{\cdot }^{\prime }$. The $X(2370)$ is observed in the $K\bar{K}\hat{I}{\cdot }^{\prime }$ i…

Improved model-independent determination of the strong-phase difference between $D^0$ and ${\bar{D}}^0\to K_{\mathrm{S},\mathrm{L}}^0{K}^{+}{K}^{-}$ decays

M. Ablikim, M. N. Achasov, P. Adlarson +489

We present a measurement of the strong-phase difference between $D^0$ and ${\bar{D}}^0\to K_{\mathrm{S},\mathrm{L}}^0{K}^{+}{K}^{-}$ decays, performed through a study of quantum-entangled pairs…

Model-independent determination of the relative strong-phase difference between $D^0$ and ${\bar{D}}^0\to K_{S,L}^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and its impact on the measurement of the CKM angle ${\hat{I}}^3/\ddot{I}{•}_3$

M. Ablikim, M. N. Achasov, P. Adlarson +483

Crucial inputs for a variety of $CP$-violation studies can be determined through the analysis of pairs of quantum-entangled neutral $D$ mesons, which are produced in the decay of t…

Observation of the electromagnetic Dalitz decay $D^{\ast 0}\to D^0{e}^{+}{e}^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

Based on 3.19 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data accumulated at the center-of-mass energy 4.178 GeV with the BESIII detector operating at the BEPCII collider, the electromagnetic…

Measurement of the Born Cross Sections for $e^{+}{e}^{-}\to D_s^{+}{D}_{s1}(2460{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s1}(2460{)}^{-}+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

The processes $e^{+}{e}^{-}\to D_s^{+}{D}_{s1}(2460{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s1}(2460{)}^{-}+c.c.$ are studied for the first time using data samples collected with the BESIII d…

Measurements of the branching fractions of $\hat{I}{\cdot }_c\to K^{+}{K}^{-}\ddot{I}{€}^0$, $K_S^0{K}^{\pm }\ddot{I}{€}^{\mp }$,$2(\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0)$, and $p\bar{p}$

M. Ablikim, M. N. Achasov, S. Ahmed +447

Using data samples collected with the BESIII detector at center-of-mass energies $\sqrt{s}=4.23,4.26,4.36,$ and $4.42$~\rm{GeV}, we measure the branching fractions of $η_c\to…

Measurement of the branching fraction for $\ddot{I}ˆ(3686)\to \ddot{I}‰K_S^0{K}_S^0$

M. Ablikim, M. N. Achasov, P. Adlarson +531

Analyzing $(448.1\pm 2.9)\times 10^6$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector at the BEPCII collider, the $\ddot{I}ˆ(3686)\to \ddot{I}‰K_S^0{K}_S^0$ decay is observed for the fi…

Search for the decay $D_s^{+}\to p\bar{p}{e}^{+}\hat{I}{½}_e$

M. Ablikim, M. N. Achasov, P. Adlarson +469

Using a $3.19{\mathrm{fb}}^{-1}$ data sample collected at the $\sqrt{s}=4.178$ GeV with the BESIII detector, we search for the rare decay $D_{s}^{+} \rightarrow p \bar{p} e^{+} ν…

Cross section measurements of $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{‡}_{c0}$ from $\sqrt{s}=$4.178 to 4.278 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +474

The cross section of the process $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{‡}_{c0}$ is measured at center-of-mass energies from $\sqrt{s}=$ 4.178 to 4.278 GeV using a data sample of 7 fb${}^{-1}$ colle…

Polarization and Entanglement in Baryon-Antibaryon Pair Production in Electron-Positron Annihilation

BESIII Collaboration, M. Ablikim, M. N. Achasov +465

Using a sample of $1.31\times 10^9$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, we report the first observation of spin polarization of $\hat{I}›$ and $\bar{\hat{I}}›$ hyperons from the co…

Weak phases and CP-symmetry tests in sequential decays of entangled double-strange baryons

M. Ablikim, M. N. Achasov, P. Adlarson +503

Using a sample of $1.31\times 10^9$ $J/\ddot{I}ˆ$ events collected with the BESIII detector at the electron-positron collider BEPCII, we analyse the full $J/\ddot{I}ˆ\to$ $\hat{I}{ž}^{-}\overline{\hat{I}}{ž}^{+}$, $Ξ…

Future Physics Programme of BESIII

M. Ablikim, M. N. Achasov, P. Adlarson +482

There has recently been a dramatic renewal of interest in the subjects of hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plet…

Observation of the decay $X(3872)\to \ddot{I}{€}^0\ddot{I}{‡}_{c1}(1P)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +468

Using a total of $9.0{\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for the proces…

Observation of the decays $\ddot{I}{‡}_{cJ}\to n{K}_S^0\bar{\hat{I}}›+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +501

By analyzing $4.48\times 10^8$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector, we observe the decays $\ddot{I}{‡}_{cJ}\to n{K}_S^0\bar{\hat{I}}›+c.c.$ ($J=0$, 1, 2) for the first time, via th…

Amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{+}{K}^{-}\ddot{I}{€}^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

We report an amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{+}{K}^{-}\ddot{I}{€}^{+}$ decay using a data sample of 3.19 $\mathrm{f}{\mathrm{b}}^{-1}$ recorded with BESIII…

Measurement of the cross section for $e^{+}{e}^{-}\to \hat{I}›\bar{\hat{I}}›$ and evidence of the decay $\ddot{I}ˆ(3770)\to \hat{I}›\bar{\hat{I}}›$

BESIII Collaboration, M. Ablikim, M. N. Achasov +502

The Born cross section of the process $e^{+}{e}^{-}\to \hat{I}›\bar{\hat{I}}›$ is measured at 33 center-of-mass energies between 3.51 and 4.60 GeV using data corresponding to the total inte…

Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +505

The electromagnetic process $e^{+}{e}^{-}\to p\bar{p}$ is studied with the initial-state-radiation technique using 7.5 fb${}^{-1}$ of data collected by the BESIII experiment at seven e…

Observation of $D^{0(+)}\to K_S^0\ddot{I}{€}^{0(+)}\ddot{I}‰$ and improved measurement of $D^0\to K^{-}\ddot{I}{€}^{+}\ddot{I}‰$

M. Ablikim, M. N. Achasov, P. Adlarson +502

By analyzing an $e^{+}{e}^{-}$ annihilation data sample with an integrated luminosity of $2.93\mathrm{f}{\mathrm{b}}^{-1}$ taken at the center-of-mass energy of 3.773 GeV with the BESIII detector, we…

Study of BESIII Trigger Efficiencies with the 2018 $J/\ddot{I}ˆ$ Data

BESIII Collaboration, M. Ablikim, M. N. Achasov +489

Using a dedicated data sample taken in 2018 on the $J/\ddot{I}ˆ$ peak, we perform a detailed study of the trigger efficiencies of the BESIII detector. The efficiencies are determined from…

Measurements of Born Cross Sections of $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{sJ}^{-}+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +500

The Born cross sections are measured for the first time for the processes $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s0}^{\ast }(2317{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s1}(2460{)}^{-}+c.c.$ at the center-of-m…

Amplitude Analysis and Branching Fraction Measurement of $D^0\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0\ddot{I}{€}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +476

Utilizing the dataset corresponding to an integrated luminosity of $2.93$ fb${}^{-1}$ at $\sqrt{s}=3.773$ GeV collected by the BESIII detector, we report the first amplitude analysis…

Observation of a structure in $e^{+}{e}^{-}\to \ddot{I}•\hat{I}{\cdot }^{\prime }$ at $\sqrt{s}$ from 2.05 to 3.08 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +498

The process $e^{+}{e}^{-}\to \ddot{I}•\hat{I}{\cdot }^{\prime }$ has been studied for the first time in detail using data sample collected with the BESIII detector at the BEPCII collider at center of ma…

Cross Section Measurement of $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}ˆ(3686)$ from $\sqrt{s}=4.0076$~GeV to 4.6984~GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +501

Using data samples with a total integrated luminosity of $20.1\mathrm{f}{\mathrm{b}}^{-1}$ collected by the BESIII detector operating at the BEPCII collider, the cross section of the process $e^+…

Observation of an isoscalar resonance with exotic $J^{PC}=1^{-+}$ quantum numbers in $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \hat{I}{\cdot }^{\prime }$

M. Ablikim, M. N. Achasov, P. Adlarson +523

Using a sample of (10.09$\pm$0.04)$\times$10${}^9$ $J/\ddot{I}ˆ$ events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay $J/ψ…

Study of $e^{+}{e}^{-}\to D^{+}{D}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ at center-of-mass energies from 4.36 to 4.60 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +476

We report a study of the $e^{+}{e}^{-}\to D^{+}{D}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ process using $e^{+}{e}^{-}$ collision data samples with an integrated luminosity of $2.5{\mathrm{fb}}^{-1}$ at center…

First Measurement of the Absolute Branching Fraction of $\hat{I}›\to p\hat{I}{¼}^{-}\bar{\hat{I}}{½}_{\hat{I}}¼$

M. Ablikim, M. N. Achasov, P. Adlarson +504

The absolute branching fraction of $\hat{I}›\to p\hat{I}{¼}^{-}\bar{\hat{I}}{½}_{\hat{I}}¼$ is reported for the first time based on an $e^{+}{e}^{-}$ annihilation sample of ten billion $J/\ddot{I}ˆ$ events collected with the…

Search for the $X(2370)$ and observation of $\hat{I}{\cdot }_c\to \hat{I}\cdot \hat{I}\cdot \hat{I}{\cdot }^{\prime }$ in $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \hat{I}\cdot \hat{I}{\cdot }^{\prime }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +491

Using a sample of $1.31\times 10^{9}J/\ddot{I}ˆ$ events collected with the BESIII detector, we perform a study of $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \hat{I}\cdot \hat{I}{\cdot }^{\prime }$ to search for the $X(2370)$ and $\hat{I}{\cdot }_c$ in t…

Search for the decay $J/\ddot{I}ˆ\to {\hat{I}}^3+\mathrm{invisible}$

M. Ablikim, M. N. Achasov, P. Adlarson +484

We search for $J/\ddot{I}ˆ$ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the $J/\ddot{I}ˆ$ produced through the process $ψ(3686)\toπ^+π^-J/…

Inclusive charged and neutral particle multiplicity distributions in $\ddot{I}{‡}_{cJ}$ and $J/\ddot{I}ˆ$ decays

BESIII collaboration, M. Ablikim, M. N. Achasov +474

Using a sample of 106 million $\ddot{I}ˆ(3686)$ decays, $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{cJ}(J=0,1,2)$ and $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{cJ},\ddot{I}{‡}_{cJ}\to {\hat{I}}^{3}J/\ddot{I}ˆ$ $(J=1,2)$ events are utilized to study i…

Search for the charged lepton flavor violating decay $J/\ddot{I}ˆ\to e\ddot{I}„$

BESIII Collaboration, M. Ablikim, M. N. Achasov +521

A search for the charged lepton flavor violating decay $J/\ddot{I}ˆ\to e^{\pm }\ddot{I}{„}^{\mp }$ with $\ddot{I}{„}^{\mp }\to \ddot{I}{€}^{\mp }\ddot{I}{€}^0\hat{I}{½}_{\ddot{I}}„$ is performed with about $10$ billion $J/\ddot{I}ˆ$ events collected…

Measurement of the doubly Cabibbo-suppressed decay $D^{+}\to K^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$ with semileptonic tags

BESIII Collaboration, M. Ablikim, M. N. Achasov +500

Using an $e^{+}{e}^{-}$ annihilation data sample corresponding to an integrated luminosity of $2.93\mathrm{f}{\mathrm{b}}^{-1}$ collected at a center-of-mass energy of 3.773 GeV with the BESIII detect…

Study of electromagnetic Dalitz decays $\ddot{I}{‡}_{cJ}\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}J/\ddot{I}ˆ$

M. Ablikim, M. N. Achasov, S. Ahmed +449

Using $4.48\times 10^8$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector, we search for the decays $\ddot{I}{‡}_{cJ}\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}J/\ddot{I}ˆ$ through the radiative decays $ψ(36…

Determination of strong-phase parameters in $D\to K_{S,L}^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$

M. Ablikim, M. N. Achasov, P. Adlarson +483

We report the most precise measurements to date of the strong-phase parameters between $D^0$ and ${\bar{D}}^0$ decays to $K_{S,L}^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ using a sample of 2.93 fb${}^{-1}$ of $e^+e…

Search for the semileptonic decay $D^{0(+)}\to b_1(1235{)}^{-(0)}{e}^{+}\hat{I}{½}_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +491

Using $2.93{\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ annihilation data collected at a center-of-mass energy $\sqrt{s}=3.773$ GeV with the BESIII detector operating at the BEPCII collider, we…

Observation of the leptonic decay $D^{+}\to \ddot{I}{„}^{+}\hat{I}{½}_{\ddot{I}}„$

BESIII Collaboration, M. Ablikim, M. N. Achasov +479

We report the first observation of $D^{+}\to \ddot{I}{„}^{+}\hat{I}{½}_{\ddot{I}}„$ with a significance of $5.1\ddot{I}ƒ$. We measure ${\cal B}(D^+\toτ^+ν_τ) = (1.20\pm0.24_{\text{stat.}}\pm0.12_{\text{syst.}})\time…

Measurement of branching fractions for $D$ meson decaying into $\ddot{I}•$ meson and a pseudoscalar meson

M. Ablikim, M. N. Achasov, P. Adlarson +473

The four decay modes $D^0\to \ddot{I}•\ddot{I}{€}^0$, $D^0\to \ddot{I}•\hat{I}\cdot$, $D^{+}\to \ddot{I}•\ddot{I}{€}^{+}$, and $D^{+}\to \ddot{I}•K^{+}$ are studied by using a data sample taken at the centre-of-mass energy $\sqrt{s} =…

First measurement of polarizations in the decay $D^0\to \ddot{I}‰\ddot{I}•$

BESIII Collaboration, M. Ablikim, M. N. Achasov +502

Using a data sample corresponding to an integrated luminosity of 2.93 fb${}^{-1}$ collected at a center-of-mass energy $\sqrt{s}=3.773$ GeV by the BESIII detector, the decay $D^0 \to…

Study of the process $e^{+}{e}^{-}\to \ddot{I}•\hat{I}\cdot$ at center-of-mass energies between 2.00 and 3.08 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +506

The process $e^{+}{e}^{-}\to \ddot{I}•\hat{I}\cdot$ is studied at 22 center-of-mass energy points ($\sqrt{s}$) between 2.00 and 3.08 GeV using 715 pb${}^{-1}$ of data collected with the BESIII…

Observation of $D^0\to K_1(1270{)}^{-}{e}^{+}\hat{I}{½}_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +507

Using 2.93 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data taken with the BESIII detector at a center-of-mass energy of 3.773 $\mathrm{GeV}$, the observation of the $D^0\to K_1(1270{)}^{-}{e}^{+}\hat{I}{½}_e$…

Measurement of the absolute branching fraction of the inclusive decay $\hat{I}{›}_c^{+}\to K_S^{0}X$

M. Ablikim, M. N. Achasov, P. Adlarson +485

We report the first measurement of the absolute branching fraction of the inclusive decay $\hat{I}{›}_c^{+}\to K_S^{0}X$. The analysis is performed using an $e^{+}{e}^{-}$ collision data sample cor…

Observation of the decays $\ddot{I}{‡}_{cJ}\to \ddot{I}•\ddot{I}•\hat{I}\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +481

Using a data sample of $(448.1\pm 2.9)\times 10^6$ $\ddot{I}ˆ(3686)$ decays collected by the BESIII detector at the Beijing Electron Positron Collider (BEPCII), we observe the decays $χ_…

Partial wave analysis of $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}{\cdot }^{\prime }\hat{I}{\cdot }^{\prime }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +511

Using a sample of $(10.09\pm 0.04)\times 10^{9}J/\ddot{I}ˆ$ events collected with the BESIII detector, a partial wave analysis of $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}{\cdot }^{\prime }\hat{I}{\cdot }^{\prime }$ is performed. The mas…

Complete measurement of $\hat{I}›$ electromagnetic form factors

M. Ablikim, M. N. Achasov, P. Adlarson +475

The exclusive process $e^{+}{e}^{-}\to \hat{I}›\bar{\hat{I}}›$, with $\hat{I}›\to p\ddot{I}{€}^{-}$ and $\bar{\hat{I}}›\to \bar{p}\ddot{I}{€}^{+}$, has been studied at $\sqrt{s}=$ 2.396 GeV for measurement of the $\hat{I}›$ electric…

Search for baryon and lepton number violating decays $D^0\to \bar{p}{e}^{+}$ and $D^0\to p{e}^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +503

Using an electron-positron collision data sample corresponding to an integrated luminosity of 2.93~fb${}^{-1}$ collected with the BESIII detector at a center-of-mass energy of 3.773…

Amplitude analysis of $D_s^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^0\hat{I}\cdot$ and first observation of the pure $W$-annihilation decays $D_s^{+}\to a_0(980{)}^{+}\ddot{I}{€}^0$ and $D_s^{+}\to a_0(980{)}^0\ddot{I}{€}^{+}$

M. Ablikim, M. N. Achasov, P. Adlarson +474

We present the first amplitude analysis of the decay $D_s^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^0\hat{I}\cdot$. We use an $e^{+}{e}^{-}$ collision data sample corresponding to an integrated luminosity…

Study of the processes $\ddot{I}{‡}_{cJ}\to \hat{I}{ž}^{-}\bar{\hat{I}}{ž}^{+}$ and $\hat{I}{ž}^0\bar{\hat{I}}{ž}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

Using $448.1\times 10^6$ $\ddot{I}ˆ(3686)$ decays collected with the BESIII detector at the BEPCII $e^{+}{e}^{-}$ storage rings, the branching fractions and angular distributions of the decays…

Measurement of the Branching Fraction of and Search for a CP-Violating Asymmetry in $\hat{I}{\cdot }^{\prime }\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{e}^{+}{e}^{-}$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +487

The rare decay $\hat{I}{\cdot }^{\prime }\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{e}^{+}{e}^{-}$ is studied using a sample of $1.3\times 10^9$ $J/\ddot{I}ˆ$ events collected with the BESIII detector at BEPCII in 2009 and 2012. The branching…

Observation of di-structures in $e^{+}{e}^{-}\to J/\ddot{I}ˆ\mathrm{X}$ at center-of-mass energies around 3.773 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +477

We report a measurement of the observed cross sections of the inclusive $J/\ddot{I}ˆ$ production in $e^{+}{e}^{-}\to J/\ddot{I}ˆ\mathrm{X}$ based on 3.21 fb${}^{-1}$ of data accumulated at energi…

Observation of the $Y(4220)$ and $Y(4360)$ in the process $e^{+}{e}^{-}\to \hat{I}\cdot J/\ddot{I}ˆ$

M. Ablikim, M. N. Achasov, P. Adlarson +483

The cross sections of the process $e^{+}{e}^{-}\to \hat{I}\cdot J/\ddot{I}ˆ$ at center-of-mass energies ($\sqrt{s}$) between 3.81 and 4.60 GeV are measured with high precision by using data samples c…

Observation of $\ddot{I}ˆ(3686)\to \hat{I}ž(1530{)}^0\bar{\hat{I}}ž(1530{)}^0$ and $\hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

Using $(448.1\pm 2.9)\times 10^6$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector and a single-baryon tagging technique, we present the first observation of the decays $ψ(36…

Study of the Dalitz decay $J/\ddot{I}ˆ\to e^{+}{e}^{-}\hat{I}\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +507

We report corrected results on a study of the electromagnetic Dalitz decay $J/\ddot{I}ˆ\to e^{+}{e}^{-}\hat{I}\cdot$ and search for di-electron decays of a light dark gauge boson ($γ'$) in $J/ψ\to γ'…

Observation of $\hat{I}{\cdot }_c\to \ddot{I}‰\ddot{I}‰$ in $J/\ddot{I}ˆ\to {\hat{I}}^3\ddot{I}‰\ddot{I}‰$

M. Ablikim, M. N. Achasov, S. Ahmed +451

Using a sample of $(1310.6\pm 7.0)\times 10^6$ $J/\ddot{I}ˆ$ events recorded with the BESIII detector at the symmetric electron positron collider BEPCII, we report the observation of the de…

Observation of the Singly Cabibbo-Suppressed Decay $\hat{I}{›}_c^{+}\to n\ddot{I}{€}^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +511

The singly Cabibbo-suppressed decay $\hat{I}{›}_c^{+}\to n\ddot{I}{€}^{+}$ is observed for the first time with a statistical significance of $7.3\ddot{I}ƒ$ by using 3.9 ${\mathrm{fb}}^{-1}$ of $e^{+}e^{-…

Search for baryon and lepton number violating decays $D^{+}\to \bar{\hat{I}}›(\bar{\hat{I}}{\pounds }^0)e^{+}$ and $D^{+}\to \hat{I}›(\hat{I}{\pounds }^0)e^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +480

Using a 2.93 fb${}^{-1}$ data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to $(8296\pm31\pm64)\ti…

New Features in the Electromagnetic Structure of the Neutron

M. Ablikim, M. N. Achasov, P. Adlarson +504

Here we present new results for the Born cross section and the effective form factor of the neutron at the center-of-mass energies $\sqrt{\mathbf{s}}$ between 2.0 and 3.08 GeV, using…

Cross sections for the reactions $e^{+}{e}^{-}\to K^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}(\ddot{I}{€}^0)$, $K^{+}{K}^{-}{K}^{+}{K}^{-}(\ddot{I}{€}^0)$, $\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}(\ddot{I}{€}^0)$, $p\bar{p}\ddot{I}{€}^{+}\ddot{I}{€}^{-}(\ddot{I}{€}^0)$ in the energy region between 3.773 and 4.600 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +500

Using the data samples collected in the energy range from 3.773 to 4.600 GeV with the BESIII detector at the BEPCII collider, we measure the dressed cross sections as a function of…

Cross section measurement of $e^{+}{e}^{-}\to p\bar{p}\hat{I}\cdot$ and $e^{+}{e}^{-}\to p\bar{p}\ddot{I}‰$ at center-of-mass energies between 3.773 GeV and 4.6 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +482

Based on $14.7{\text{fb}}^{-1}$ of $e^{+}{e}^{-}$ annihilation data collected with the BESIII detector at the BEPCII collider at 17 different center-of-mass energies between $3.7730~\te…

Observation of a near-threshold enhancement in the $\hat{I}›\bar{\hat{I}}›$ mass spectrum from $e^{+}{e}^{-}\to \ddot{I}•\hat{I}›\bar{\hat{I}}›$ at $\sqrt{s}$ from 3.51 to 4.60 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +503

The process $e^{+}{e}^{-}\to \ddot{I}•\hat{I}›\bar{\hat{I}}›$ is studied using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies $\sqrt{s}$ ranging from $3.5…

Search for the decay $D_s^{+}\to a_0(980{)}^0{e}^{+}\hat{I}{½}_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +506

Using 6.32 fb${}^{-1}$ of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226~GeV, we present the first search for the…

Measurements of the branching fractions of $\ddot{I}ˆ(3686)\to \bar{\hat{I}}{\pounds }^0\hat{I}›+c.c.$ and $\ddot{I}{‡}_{cJ(J=0,1,2)}\to \hat{I}›\bar{\hat{I}}›$

BESIII Collaboration, M. Ablikim, M. N. Achasov +505

Based on $4.481\times 10^8$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector at BEPCII, the branching fraction of the isospin violating decay $ψ(3686)\rightarrow\barΣ^{0}Λ+c.…

Evidence for the decays of $\hat{I}{›}_c^{+}\to \hat{I}{\pounds }^{+}\hat{I}\cdot$ and $\hat{I}{\pounds }^{+}\hat{I}{\cdot }^{\prime }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +458

We study the hadronic decays of $\hat{I}{›}_c^{+}$ to the final states $\hat{I}{\pounds }^{+}\hat{I}\cdot$ and $\hat{I}{\pounds }^{+}\hat{I}{\cdot }^{\prime }$, using an $e^{+}{e}^{-}$ annihilation data sample of 567 pb${}^{-1}$ taken at a center-o…

Observation of resonance structures in $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{ˆ}_2(3823)$ and mass measurement of $\ddot{I}{ˆ}_2(3823)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +547

Using a data sample corresponding to an integrated luminosity of 11.3 $\mathrm{f}{\mathrm{b}}^{-1}$ collected at center-of-mass energies from $4.23$ to $4.70$ GeV with the BESIII detector, we meas…

Determination of the absolute branching fractions of $D^0\to K^{-}{e}^{+}\hat{I}{½}_e$ and $D^{+}\to {\bar{K}}^0{e}^{+}\hat{I}{½}_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +502

Using 2.93 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we measure the absolute branching fractions of the decay…

Measurements of the absolute branching fractions of $D^{0(+)}\to K\bar{K}\ddot{I}€\ddot{I}€$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +492

Based on 2.93~fb${}^{-1}$ $e^{+}{e}^{-}$ collision data taken at center-of-mass energy of 3.773 GeV by the BESIII detector, we report the measurements of the absolute branching fractions o…

Observation of a resonant structure in $e^{+}{e}^{-}\to \ddot{I}‰\hat{I}\cdot$ and another in $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{€}^0$ at center-of-mass energies between 2.00 and 3.08 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +485

Born cross sections for the processes $e^{+}{e}^{-}\to \ddot{I}‰\hat{I}\cdot$ and $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{€}^0$ have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detecto…

Search for invisible decays of the $\hat{I}›$ baryon

BESIII Collaboration, M. Ablikim, M. N. Achasov +498

A search for invisible decays of the $\hat{I}›$ baryon is carried out in the process $J/\ddot{I}ˆ\to \hat{I}›\bar{\hat{I}}›$ based on $(1.0087\pm 0.0044)\times 10^{10}$ $J/\ddot{I}ˆ$ events collected with the BESIII d…

Measurement of proton electromagnetic form factors in $e^{+}{e}^{-}\to p\bar{p}$ in the energy region 2.00-3.08 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +473

The process of $e^{+}{e}^{-}\to p\bar{p}$ is studied at 22 center-of-mass energy points ($\sqrt{s}$) from 2.00 to 3.08 GeV, exploiting 688.5~pb${}^{-1}$ of data collected with the…

Observation of the Decay $D^0\to \ddot{I}{}^{-}\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$

BESIII Collaboration, M. Ablikim, M. N. Achasov +500

By analyzing an $e^{+}{e}^{-}$ annihilation data sample corresponding to an integrated luminosity of $2.93{\mathrm{fb}}^{-1}$ collected at a center-of-mass energy of 3.773 GeV with the BE…

Study of $e^{+}{e}^{-}\to \ddot{I}{€}^{0}X(3872){\hat{I}}^3$ and search for $Z_c(4020{)}^0\to X(3872){\hat{I}}^3$

M. Ablikim, M. N. Achasov, P. Adlarson +505

Using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.178 to 4.600 GeV, we study the process $e^+e^-\rightarr…

Measurement of the Born cross sections for $e^{+}{e}^{-}\to \hat{I}{\cdot }^{\prime }\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ at center-of-mass energies between $2.00$ and $3.08$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +487

The Born cross sections for the process $e^{+}{e}^{-}\to \hat{I}{\cdot }^{\prime }\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ at different center-of-mass energies between $2.00$ and $3.08$ GeV are reported with improved precision…

Measurements of $e^{+}{e}^{-}\to \hat{I}{\cdot }_{\mathrm{c}}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$, $\hat{I}{\cdot }_{\mathrm{c}}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $\hat{I}{\cdot }_{\mathrm{c}}\ddot{I}{€}^0{\hat{I}}^3$ at $\sqrt{s}$ from 4.18 to 4.60\,GeV, and search for a $Z_{\mathrm{c}}$ state close to the $D\bar{D}$ threshold decaying to $\hat{I}{\cdot }_{\mathrm{c}}\ddot{I}€$ at $\sqrt{s}$ = 4.23 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +492

We study $\hat{I}{\cdot }_{\mathrm{c}}$ production at center-of-mass energies $\sqrt{s}$ from 4.18 to 4.60 GeV in $e^{+}{e}^{-}$ annihilation data collected with the BESIII detector operating at the BEPCI…

Measurement of the inclusive branching fraction for $\ddot{I}ˆ(3686)\to K_S^0+\text{anything}$

M. Ablikim, M. N. Achasov, P. Adlarson +483

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 obser…

Observation of $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}ˆ(3770)$ and $D_1(2420{)}^0{\bar{D}}^0+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +475

Several intermediate states of the reaction channels $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{D}^0{\bar{D}}^0$ and $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{D}^{+}{D}^{-}$ are studied usin…

Measurement of cross-section for $e^{+}{e}^{-}\to \hat{I}{ž}^{-}\bar{\hat{I}}{ž}^{+}$ near threshold at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +494

The Born cross-sections and effective form factors for process $e^{+}{e}^{-}\to \hat{I}{ž}^{-}\bar{\hat{I}}{ž}^{+}$ are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total inte…

Measurement of Branching Fractions of $\ddot{I}ˆ(3686)\to \ddot{I}•\hat{I}{\cdot }^{\prime },\ddot{I}•f_1(1285)$ and $\ddot{I}•\hat{I}\cdot (1405)$

M. Ablikim, M. N. Achasov, P. Adlarson +476

Using a sample of $448.1\times 10^6$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector, we perform a study of the decay $\ddot{I}ˆ(3686)\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}\hat{I}\cdot$. The branching fra…

Measurement of $e^{+}{e}^{-}\to {\hat{I}}^3\ddot{I}{‡}_{c0,c1,c2}$ cross sections at center-of-mass energies between 3.77 and 4.60 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +501

The $e^{+}{e}^{-}\to {\hat{I}}^3\ddot{I}{‡}_{cJ}$ ($J=0,1,2$) processes are studied at center-of-mass energies ranging from 3.773 to 4.600 GeV, using a total integrated luminosity of 19.3 fb${}^{-1}$ $e^+e^-…

Search for the rare semi-leptonic decay $J/\ddot{I}ˆ\to D^{-}{e}^{+}\hat{I}{½}_e+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +503

Using $10.1\times 10^9$ $J/\ddot{I}ˆ$ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy $\sqrt{s}=3.097\mathrm{GeV}$ and collected with the BESII…

Search for the reaction $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{‡}_{cJ}$ and a charmonium-like structure decaying to $\ddot{I}{‡}_{cJ}\ddot{I}{€}^{\pm }$ between 4.18 and 4.60 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +481

We search for the process $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{‡}_{cJ}$ ($J=0,1,2$) and for a charged charmonium-like state in the $\ddot{I}{€}^{\pm }\ddot{I}{‡}_{cJ}$ subsystem. The search uses data…

Amplitude analysis and branching fraction measurement of the decay $D_s^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^0\ddot{I}{€}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +498

Using a data set corresponding to an integrated luminosity of 6.32~$\mathrm{f}{\mathrm{b}}^{-1}$ recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226~GeV, an amplitud…

Erratum to "Measurement of the $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ cross section between 600 and 900 MeV using initial state radiation"

BESIII Collaboration, M. Ablikim, M. N. Achasov +489

In Phys. Lett. B 753, 629-638 (2016) [arXiv:1507.08188] the BESIII collaboration published a cross section measurement of the process $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ in the energy range betw…

Observation of the Semileptonic $D^{+}$ Transition into an Axial-Vector Meson ${\bar{K}}_1(1270{)}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +479

By analyzing a 2.93~$\mathrm{f}{\mathrm{b}}^{-1}$ data sample of $e^{+}{e}^{-}$ collisions, recorded at a center-of-mass energy of 3.773 $\mathrm{GeV}$ with the BESIII detector operated at the BEPCII colli…

Search for the reaction channel $e^{+}{e}^{-}\to \hat{I}{\cdot }_c\hat{I}\cdot \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ at center-of-mass energies from 4.23 to 4.60 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +464

Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process $e^{+}{e}^{-}\to \hat{I}{\cdot }_c\hat{I}\cdot \ddot{I}{€}^{+}\ddot{I}{€}^{-}$. The search is perfo…

Search for the rare decay $\hat{I}{\cdot }^{\prime }\to \ddot{I}{€}^0\ddot{I}{€}^0\ddot{I}{€}^0\ddot{I}{€}^0$ at BESIII

M. Ablikim, M. N. Achasov, P. Adlarson +476

Based on a sample of 1.31 billion $J/\ddot{I}ˆ$ events collected with the BESIII detector, we perform a search for the rare decay $\hat{I}{\cdot }^{\prime }\to 4\ddot{I}{€}^0$ via $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}{\cdot }^{\prime }$. No s…

First Measurements of $\ddot{I}{‡}_{cJ}\to \hat{I}{\pounds }^{-}\bar{\hat{I}}{\pounds }^{+}(J=0,1,2)$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

We measured the branching fractions of the decays $\ddot{I}{‡}_{cJ}\to \hat{I}{\pounds }^{-}\bar{\hat{I}}{\pounds }^{+}$ for the first time using the final states $n\bar{n}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$. The data sample exploited here is $…

Measurement of cross section for $e^{+}{e}^{-}\to \hat{I}{ž}^0\bar{\hat{I}}{ž}^0$ near threshold

BESIII Collaboration, M. Ablikim, M. N. Achasov +509

Using $e^{+}{e}^{-}$ collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector at BEPCII and corresponding to an integrated luminosity…

Search for the decay $\hat{I}{\cdot }^{\prime }\to {\hat{I}}^3{\hat{I}}^3\hat{I}\cdot$