S. Jaeger

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

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

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

Search for invisible decays of a dark photon using $e^{+} e^{-}$ annihilation data at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +564

We report a search for a dark photon using $14.9$ ~fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data taken at center-of-mass energies from 4.13 to 4.60~GeV with the BESIII detector operated a…

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…

Improved measurement of the decays $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{+ (0)} I ¨ ^{- (0)}$ and search for the rare decay $I^\cdot^{'} \to 4 I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +617

Using a sample of 10 billion $J / I ¨ $ events collected with the BESIII detector, the decays $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{+} I ¨ ^{-}$ , $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ and $Î·' \to 4 Ï^{…

hep-ex2026

Study of the $f_{0} (980)$ and $f_{0} (500)$ Scalar Mesons through the Decay $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{-} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +605

Using $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 7.33~ $f b^{- 1}$ recorded by the BESIII detector at center-of-mass energies between 4.128 and 4.226~$…

Search for the semileptonic decays $D_{s}^{+} \to K_{1} (1270)^{0} e^{+} I^½_{e}$ and $D_{s}^{+} \to b_{1} (1235)^{0} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

By analyzing 7.33\,fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic de…

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

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…

Study of the Semileptonic Decay $I^_{c}^{+} \to I^ e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +563

The measurement of the Cabibbo-favored semileptonic decay $I^_{c}^{+} \to I^ e^{+} I^½_{e}$ is reported using a $4.5 fb^{- 1}$ data sample of $e^{+} e^{-}$ annihilations collected a…

Measurement of the Born Cross Sections for $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2460)^{-} + c . c .$ and $e^{+} e^{-} \to D_{s}^{*+} D_{s 1} (2460)^{-} + c . c .$

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

The processes $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2460)^{-} + c . c .$ and $e^{+} e^{-} \to D_{s}^{*+} D_{s 1} (2460)^{-} + c . c .$ are studied for the first time using data samples collected with the BESIII d…

Measurement of $e^{+} e^{-} \to K^{+} K^{-} I ¨ ^{0}$ cross section and observation of a resonant structure

BESIII Collaboration, M. Ablikim, M. N. Achasov +556

Based on $e^{+} e^{-}$ collision data collected by the BESIII detector at the BEPCII collider at center-of-mass energies from 2.000 to 3.080 GeV, a partial-wave analysis is performe…

Measurement of the Cross Section for $e^{+} e^{-} \to$ hadrons at Energies from 2.2324 to 3.6710 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +557

Based on electron-positron collision data collected with the BESIII detector operating at the Beijing Electron Positron Collider II storage rings, the value of $R\equivÏ(e^{+}e^{-…

First Observation of the Semileptonic Decay $I^_{c}^{+} \to p K^{-} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +563

Using $4.5 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data samples collected at the center-of-mass energies ranging from 4.600~GeV to 4.699~GeV with the BESIII detector at the BEPC…

Determination of Spin-parity Quantum Numbers for the Narrow Structure Near the $p I^ˉ $ Threshold in $e^{+} e^{-} \to p K^{-} I^ˉ + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +593

A narrow structure in the $p I^ˉ $ system near the mass threshold, named as $X (2085)$ , is observed in the process $e^{+} e^{-} \to p K^{-} I^ˉ $ with a statistical significance greater…

Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^{0} \to K_{L}^{0} I ¨ ^{+} I ¨ ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +605

We present a study of the resonant structure of the decay $D^{0} \to K_{L}^{0} I ¨ ^{+} I ¨ ^{-}$ , using quantum-correlated $D^{0} D ˉ^{0}$ data produced at $s = 3.773$ GeV. The data sam…

Observation of $D^{+} \to K_{S}^{0} a_{0} (980)^{+}$ in the amplitude analysis of $D^{+} \to K_{S}^{0} I ¨ ^{+} I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

We perform for the first time an amplitude analysis of the decay $D^{+} \to K_{S}^{0} I ¨ ^{+} I^\cdot$ and report the observation of the decay $D^{+} \to K_{S}^{0} a_{0} (980)^{+}$ using 2.93 fb…

Observation of the decay $I ¨ (3686) \to I^£^{-} I^ˉ £^{+}$ and measurement of its angular distribution

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using $(448.1 \pm 2.9) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector at the BEPCII collider, the decay $I ¨ (3686) \to I^£^{-} I^ˉ £^{+}$ is observed for the first time wit…

Amplitude analysis and branching fraction measurement of $D_{s}^{+} \to K^{+} K^{-} I ¨ ^{+}$

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

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

Observation of the $J / I ¨ $ and $I ¨ (3686)$ decays into $I^\cdot I^£^{+} I^ˉ £^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +572

The decays $J / I ¨ \to I^\cdot I^£^{+} I^ˉ £^{-}$ and $I ¨ (3686) \to I^\cdot I^£^{+} I^ˉ £^{-}$ are observed for the first time, using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ and $(448.1 \pm 2.9)\times 10…

First Observation of a Three-Resonance Structure in $e^{+} e^{-} \to$ Nonopen Charm Hadrons

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

We report the measurement of the inclusive cross sections for $e^{+} e^{-}$ $\to$ nOCH (where nOCH denotes non-open charm hadrons) with improved precision at center-of-mass (c.m.)…

Measurement of $e^{+} e^{-} \to I ¨ I ¨ ^{+} I ¨ ^{-}$ cross sections at center-of-mass energies from 2.00 to 3.08 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +600

Using data corresponding to an integrated luminosity of $651 pb^{- 1}$ accumulated at 22 center-of-mass energies from 2.00 to 3.08 GeV by the BESIII experiment, the process…

Search for the weak radiative decay $I^_{c}^{+} \to I^£^{+} I^^{3}$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

The Cabibbo-allowed weak radiative decay $I^_{c}^{+} \to I^£^{+} I^^{3}$ has been searched for in a sample of $I^_{c}^{+} I^ˉ _{c}^{-}$ pairs produced in $e^{+} e^{-}$ annihilations, corresponding to…

Search for a massless dark photon in $Î^{+}_{c}\to p Î³^{\prime}$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +569

A search for a massless dark photon $Î³^{\prime}$ is conducted using 4.5 $fb^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies between 4.600 and 4.699…

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

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

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

Measurement of branching fractions of $I^_{c}^{+}$ decays to $I^£^{+} K^{+} K^{-}$ , $I^£^{+} I ¨ $ and $I^£^{+} K^{+} I ¨ ^{-} (I ¨ ^{0})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +612

Based on 4.5 fb $^{- 1}$ data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractio…

Measurement of the absolute branching fraction of the inclusive decay $I^ˉ _{c}^{-} \to n ˉ + X$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Based on $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 4.5 $f b^{- 1}$ collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII det…

Search for the charged lepton flavor violating decay $J / I ¨ \to e I ¨ $

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

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

Study of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ at $s$ from 2.00 to 3.08 GeV at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

With the data samples taken at center-of-mass energies from 2.00 to 3.08 GeV with the BESIII detector at the BEPCII collider, a partial wave analysis on the $e^{+}e^{-}\rightarrowÏ…

Search for the semileptonic decay $D^{0 (+)} \to b_{1} (1235)^{- (0)} e^{+} I^½_{e}$

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

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

First simultaneous measurement of $I^^{0}$ and $I^ˉ ^{0}$ asymmetry parameters in $I ¨ (3686)$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +595

The $I^^{0}$ asymmetry parameters are measured using entangled quantum $I^^{0}$ - $I^ˉ ^{0}$ pairs from a sample of $(448.1 \pm 2.9) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BES…

First measurement of polarizations in the decay $D^{0} \to I ¨ 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 $s = 3.773$ GeV by the BESIII detector, the decay $D^0 \to…

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

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

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

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

Search for the lepton number violation decay $I ¨ \to I ¨ ^{+} I ¨ ^{+} e^{-} e^{-}$ via $J / I ¨ \to I ¨ I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +596

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected by the BESIII detector at the BEPCII collider, we search for the lepton number violation decay $Ï\to Ï^+ Ï^+ e^- e…

Study of $I^\cdot (1405) / I^\cdot (1475)$ in $J / I ¨ \to I^^{3} K_{S}^{0} K_{S}^{0} I ¨ ^{0}$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using a sample of $(10.09 \pm 0.04) \times 1 0^{9}$ $J / I ¨ $ decays collected with the BESIII detector, partial wave analyses of the decay $J / I ¨ \to I^^{3} K_{S}^{0} K_{S}^{0} I ¨ ^{0}$ are perform…

Observation of a New $X (3872)$ Production Process $e^{+} e^{-} \to I ¨ X (3872)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +571

Using $4.7 f b^{- 1}$ of $e^{+} e^{-}$ collision data at center-of-mass energies from 4.661 to 4.951 GeV collected by the BESIII detector at the BEPCII collider, we observe the $X(387…

Cross section measurements of $e^{+} e^{-} \to I^¦ K^{+} K^{-}$ and $e^{+} e^{-} \to I^¦ K_{S}^{0} K_{S}^{0}$ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

Based on 22.7 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at 33 different center-of-mass energies between 3.7730 GeV and 4.7008 GeV with the BESIII detector at the BEPCII col…

Search for hyperon $I^ S = I^ Q$ violating decay $I^^{0} \to I^£^{-} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Using a data sample of $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ decay events collected with the BESIII detector at the center-of-mass energy of $s = 3.097$ GeV, we present a se…

hep-ex2025

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +610

The inclusive cross sections of prompt $J / I ¨ $ and $I ¨ (3686)$ 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…

Study of the processes $I ¨ _{c J} \to I^^{-} I^ˉ ^{+}$ and $I^^{0} I^ˉ ^{0}$

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

Using $448.1 \times 1 0^{6}$ $I ¨ (3686)$ decays collected with the BESIII detector at the BEPCII $e^{+} e^{-}$ storage rings, the branching fractions and angular distributions of the decays…

Search for $I^ˉ $ - $I^$ oscillations in the decay $J / I ¨ \to p K^{-} I^ˉ + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +454

We report the first search for $I^ˉ $ -- $I^$ oscillations in the decay $J / I ¨ \to p K^{-} I^ˉ + c . c .$ by analyzing $1.31 \times 1 0^{9}$ $J / I ¨ $ events accumulated with the BESIII detect…

Observation of Three Charmoniumlike States with $J^{P C} = 1^{--}$ in $e^{+} e^{-} \to D^{* 0} D^{*-} I ¨ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +593

The Born cross sections of the process $e^{+} e^{-} \to D^{* 0} D^{*-} I ¨ ^{+}$ at center-of-mass energies from 4.189 to 4.951 GeV are measured for the first time. The data samples used…

Observation of the Anomalous Shape of $X (1840)$ in $J / I ¨ \to I^^{3} 3 (I ¨ ^{+} I ¨ ^{-})$ Indicating a Second Resonance Near $p p ˉ$ Threshold

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events, which is about 45 times larger than that was previously analyzed, a further investigation on the $J/Ï\rightarrow Î³3(Ï^…

Measurements of Differential Cross Sections of Inclusive $I ¨ ^{0}$ and $K_{S}^{0}$ Production in $e^{+} e^{-}$ Annihilation at Energies from 2.2324 to 3.6710 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +572

Based on electron positron collision data collected with the BESIII detector operating at the BEPCII storage rings, the differential cross sections of inclusive $I ¨ ^{0}$ and $K_{S}^{0}$ …

Observation of di-structures in $e^{+} e^{-} \to J / I ¨ X$ 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 / I ¨ $ production in $e^{+} e^{-} \to J / I ¨ X$ 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 I^\cdot J / I ¨ $

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

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

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

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

We report corrected results on a study of the electromagnetic Dalitz decay $J / I ¨ \to e^{+} e^{-} I^\cdot$ and search for di-electron decays of a light dark gauge boson ($Î³'$) in $J/Ï\to Î³'…

Search for the leptonic decays $D^{+} \to e^{+} I^½_{e}$ and $D^{+} \to I^¼^{+} I^½_{I^} ¼$

BESIII Collaboration, M. Ablikim, M. N. Achasov +572

We present the first search for the leptonic decays $D^{*+} \to e^{+} I^½_{e}$ and $D^{*+} \to I^¼^{+} I^½_{I^} ¼$ by analyzing a data sample of electron-positron collisions recorded with the BESII…

Precision Measurement of the Decay $I^£^{+} \to p I^^{3}$ in the Process $J / I ¨ \to I^£^{+} I^ˉ £^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +593

Using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector, the radiative hyperon decay $I^£ \to p I^^{3}$ is studied at an electron-positron collider exp…

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 $s$ between 2.0 and 3.08 GeV, using…

Improved measurement of the branching fractions for $J / I ¨ \to I^^{3} I ¨ ^{0}$ , $I^^{3} I^\cdot$ and $I^^{3} I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

Using a data sample of $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected with the BESIII detector, the decays of $J / I ¨ \to I^^{3} I ¨ ^{0} (I^\cdot, I^\cdot^{'}) \to I^^{3} I^^{3} I^^{3}$ are studied. Ne…

Observation of $D_{s}^{+} \to I^\cdot^{'} I^¼^{+} I^½_{I^} ¼$ , Precision Test of Lepton Flavor Universality with $D_{s}^{+} \to I^\cdot^{(')} ℓ^{+} I^½_{ℓ}$ , and First Measurements of $D_{s}^{+} \to I^\cdot^{(')} I^¼^{+} I^½_{I^} ¼$ Decay Dynamics

BESIII Collaboration, M. Ablikim, M. N. Achasov +596

By analyzing 7.33 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of th…

Measurement of the branching fraction and decay asymmetry of $I^ \to n I^^{3}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +565

The radiative hyperon decay $I^ \to n I^^{3}$ is studied using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector operating at BEPCII. The absolute branching frac…

Measurement of $e^{+} e^{-} \to I^ I^ˉ I^\cdot$ from 3.5106 to 4.6988 GeV and study of $I^ I^ˉ $ mass threshold enhancement

BESIII Collaboration, M. Ablikim, M. N. Achasov +599

Using data samples with a total integrated luminosity of approximately 18 fb $^{- 1}$ collected by the BESIII detector operating at the BEPCII, the process $e^+e^-\rightarrowÎ\barÎ…

Observation of a near-threshold enhancement in the $I^ I^ˉ $ mass spectrum from $e^{+} e^{-} \to I ¨ I^ I^ˉ $ at $s$ from 3.51 to 4.60 GeV

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

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

Search for the decay $D_{s}^{+} \to a_{0} (980)^{0} e^{+} I^½_{e}$

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…

Observation of $a_{0} (1710)^{+} \to K_{S}^{0} K^{+}$ in study of the $D_{s}^{+} \to K_{S}^{0} K^{+} I ¨ ^{0}$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +551

Using $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 6.32 fb $^{- 1}$ collected at center-of-mass energies between 4.178 GeV and 4.226 GeV with the BESIII de…

Measurement of the Energy-Dependent Electromagnetic Form Factors of a Charmed Baryon

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

We study the process $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ at twelve center-of-mass energies from $4.6119$ to $4.9509 GeV$ using data samples collected by the BESIII detec…

Observation of the hindered electromagnetic Dalitz decay $I ¨ (3686) \to e^{+} e^{-} I^\cdot_{c}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Using a data sample of $(448.1 \pm 2.9) \times 1 0^{6} I ¨ (3686)$ decays collected at an $e^{+} e^{-}$ center-of-mass energy of $3.686 GeV$ by the BESIII detector at BEPCII, we report…

First study of reaction $I^^{0} n \to I^^{-} p$ using $I^^{0}$ -nucleus scattering at an electron-positron collider

BESIII Collaboration, M. Ablikim, M. N. Achasov +604

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII storage ring, the process $I^^{0} n \to I^^{-} p$ is studied, where the $Î…

Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay $I^_{c}^{+} \to p I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +569

The singly Cabibbo suppressed decay $I^_{c}^{+} \to p I^\cdot^{'}$ is measured using 4.5 $fb^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies between 4.…

Cross section measurements of the $e^{+} e^{-} \to D^{+} D^{-}$ and $e^{+} e^{-} \to D^{*+} D^{-}$ processes at center-of-mass energies from 4.085 to 4.600 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +549

The Born cross sections of the $e^{+} e^{-} \to D^{*+} D^{*-}$ and $e^{+} e^{-} \to D^{*+} D^{-}$ processes are measured using $e^{+} e^{-}$ collision data collected with the BESIII experiment at cen…

Study of $I^_{c}^{+} \to I^ I^¼^{+} I^½_{I^} ¼$ and Test of Lepton Flavor Universality with $I^_{c}^{+} \to I^ ℓ^{+} I^½_{ℓ}$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +614

The measurement of the Cabibbo-favored semileptonic decay $I^_{c}^{+} \to I^ I^¼^{+} I^½_{I^} ¼$ is reported using $4.5 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at center…

Measurements of the branching fractions of the inclusive decays $D^{0} (D^{+}) \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} X$

BESIII Collaboration, M. Ablikim, M. N. Achasov +590

Using $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 2.93 fb $^{- 1}$ taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we report the f…

Measurement of $e^{+} e^{-} \to I ¨ I^\cdot^{'}$ cross sections at center-of-mass energies from 3.508 to 4.951 GeV and search for the decay $I ¨ (3770) \to I ¨ I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

The cross sections of the $e^{+} e^{-} \to I ¨ I^\cdot^{'}$ process at center-of-mass energies from 3.508 to 4.951 GeV are measured with high precision using 26.1 fb $^{- 1}$ data collected with…

Measurements of the absolute branching fractions of hadronic $D$ -meson decays involving kaons and pions

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

By analyzing an electron-positron collision data sample corresponding to an integrated luminosity of $2.93 f b^{- 1}$ taken at the center-of-mass energy of 3.773 GeV with the BE…

Measurements of the absolute branching fractions of $D^{0 (+)} \to K K ˉ I ¨ 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 $J / I ¨ $ decays to $e^{+} e^{-} e^{+} e^{-}$ and $e^{+} e^{-} I^¼^{+} I^¼^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +543

Using a data sample of $4.481 \times 1 0^{8} I ¨ ^{'}$ events collected with the BESIII detector, we report the first observation of the four-lepton-decays $J / I ¨ \to e^{+} e^{-} e^{+} e^{-}$ and…

Observation of a resonant structure in $e^{+} e^{-} \to I ¨ I^\cdot$ and another in $e^{+} e^{-} \to I ¨ I ¨ ^{0}$ 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 $e^{+} e^{-} \to I ¨ I^\cdot$ and $e^{+} e^{-} \to I ¨ I ¨ ^{0}$ have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detecto…

First measurements of the absolute branching fraction of $I^_{c} (2625)^{+} \to I^_{c}^{+} I ¨ ^{+} I ¨ ^{-}$ and upper limit on $I^_{c} (2595)^{+} \to I^_{c}^{+} I ¨ ^{+} I ¨ ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +613

The absolute branching fraction of the decay $I^_{c} (2625)^{+} \to I^_{c}^{+} I ¨ ^{+} I ¨ ^{-}$ is measured for the first time to be $(50.7 \pm 5. 0_{stat.} \pm 4. 9_{syst.}) %$ wit…

Observation of the decay $I ¨ _{c J} \to I^c ◯^{-} I^ˉ c ◯^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +595

Using an $e^{+} e^{-}$ collision data sample of $(27.08 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected by the BESIII detector, we report the first observation of $Ï_{cJ} \to Î©^-…

Search for invisible decays of the $I^$ baryon

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

A search for invisible decays of the $I^$ baryon is carried out in the process $J / I ¨ \to I^ I^ˉ $ based on $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected with the BESIII d…

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

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

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

Search for a scalar partner of the $X (3872)$ via $I ¨ (3770)$ decays into $I^^{3} I^\cdot I^\cdot^{'}$ and $I^^{3} I ¨ ^{+} I ¨ ^{-} J / I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

Using a data sample corresponding to an integrated luminosity of 2.93 fb $^{- 1}$ collected at a center-of-mass energy of 3.773~GeV with the BESIII detector at the BEPCII collider, w…

Search for baryon and lepton number violating decays of $I^^{0}$ hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +602

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected by the BESIII detector at the BEPCII collider, we report the first search for the baryon and lepton number violating…

Evidence of the Singly Cabibbo Suppressed decay $I^_{c}^{+} \to p I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +610

Evidence for the singly Cabibbo suppressed decay $I^_{c}^{+} \to p I ¨ ^{0}$ is reported for the first time with a statistical significance of $3.7 I ¨ $ based on 6.0 $fb^{- 1}$ of $e^+…

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

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

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

Measurement of $e^{+} e^{-} \to I^^{3} I ¨ _{c 0, c 1, c 2}$ cross sections at center-of-mass energies between 3.77 and 4.60 GeV

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

The $e^{+} e^{-} \to I^^{3} I ¨ _{c J}$ ( $J = 0, 1, 2$ ) 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 $J / I ¨ \to D^{-} e^{+} I^½_{e} + c . c .$

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

Using $10.1 \times 1 0^{9}$ $J / I ¨ $ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy $s = 3.097 GeV$ and collected with the BESII…

Study of excited $I^$ states in $I ¨ (3686) \to K^{-} I^ I^^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +599

Based on a sample of $(448.1 \pm 2.9) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector at BEPCII, the decays of $I ¨ (3686) \to K^{-} I^ I^^{+} + c . c .$ with $\o…

Search for the reaction $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ _{c J}$ and a charmonium-like structure decaying to $I ¨ _{c J} I ¨ ^{\pm}$ between 4.18 and 4.60 GeV

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

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

Search for di-photon decays of an axion-like particle in radiative $J / I ¨ $ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +614

We search for the di-photon decay of a light pseudoscalar axion-like particle, $a$ , in radiative $J / I ¨ $ decays, using 10 billion $J / I ¨ $ events collected with the BESIII detector. W…

Measurement of the absolute branching fraction of the three-body decay $I^_{c}^{+} \to I^^{0} K^{+} I ¨ ^{0}$ and search for $I^_{c}^{+} \to n K^{+} I ¨ ^{0}$ , $I^£^{0} K^{+} I ¨ ^{0}$ and $I^ K^{+} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

The Cabbibo-favored decay $I^_{c}^{+} \to I^^{0} K^{+} I ¨ ^{0}$ is studied for the first time using 6.1 fb $^{- 1}$ of $e^{+} e^{-}$ collision data at center-of-mass energies between 4.600 and…

Observation of the double Dalitz decay $I^\cdot^{'} \to e^{+} e^{-} e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector at BEPCII, the double Dalitz decay $I^\cdot^{'} \to e^{+} e^{-} e^{+} e^{-}$ is observed for the first time via the…

Precise measurement of the branching fractions of $J / I ¨ \to I^ˉ I ¨ ^{+} I^£^{-} + c . c .$ and $J / I ¨ \to I^ˉ I ¨ ^{-} I^£^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +610

Based on a data sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector, the branching fraction of $J / I ¨ \to I^ˉ I ¨ ^{+} I^£^{-} + c . c .$ is measured…

First Measurements of $I ¨ _{c J} \to I^£^{-} I^ˉ £^{+} (J = 0, 1, 2)$ Decays

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

We measured the branching fractions of the decays $I ¨ _{c J} \to I^£^{-} I^ˉ £^{+}$ for the first time using the final states $n n ˉ I ¨ ^{+} I ¨ ^{-}$ . The data sample exploited here is $…

Measurement of cross section for $e^{+} e^{-} \to I^^{0} I^ˉ ^{0}$ 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…

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +616

Using data samples collected at center-of-mass energies between 2.000 and 3.080 GeV with the BESIII detector operating at the BEPCII collider, a partial-wave analysis is performed…

Precise Measurements of Branching Fractions for $D_{s}^{+}$ Meson Decays to Two Pseudoscalar Mesons

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

We measure the branching fractions for seven $D_{s}^{+}$ two-body decays to pseudo-scalar mesons, by analyzing data collected at $s = 4.178 \sim 4.226$ GeV with the BESIII detec…

Determination of the $I^_{c}^{+}$ spin via the reaction $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$

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

We report on a comparison of two possible $I^_{c}^{+}$ spin hypotheses, $J = \frac{1}{2}$ and $\frac{3}{2}$ , via the process $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ , using the angular distributions…

Observations of the Cabibbo-Suppressed decays $I^_{c}^{+} \to n I ¨ ^{+} I ¨ ^{0}$ , $n I ¨ ^{+} I ¨ ^{-} I ¨ ^{+}$ and the Cabibbo-Favored decay $I^_{c}^{+} \to n K^{-} I ¨ ^{+} I ¨ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using electron-positron annihilation data samples corresponding to an integrated luminosity of 4.5 $fb^{- 1}$ , collected by the BESIII detector in the energy region between $…

Measurement of $I^$ transverse polarization in $e^{+} e^{-}$ collisions at $s = 3.68 - 3.71$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +591

With data samples collected with the BESIII detector at seven energy points at $s = 3.68 - 3.71$ GeV, corresponding to an integrated luminosity of 333 pb $^{- 1}$ , we present a…

Search for baryon and lepton number violation decay $D^{\pm} \to n (n ˉ) e^{\pm}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +568

Using a data set of electron-positron collisions corresponding to an integrated luminosity of $2.93 f b^{- 1}$ taken with the BESIII detector at a center-of-mass energy of 3.77…

Study of $e^{+} e^{-} \to I^^{3} I ¨ J / I ¨ $ from $s = 4.600$ to $4.951$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +571

Using data samples with an integrated luminosity of $6.4$ ~fb $^{- 1}$ collected by the BESIII detector operating at the BEPCII storage ring, the process of $e^{+} e^{-} \to I^^{3} I ¨ J / I ¨ $ is stu…

Helicity amplitude analysis of $I ¨ _{c J} \to I ¨ I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using (447.9 $\pm$ 2.3) million $I ¨ $ (3686) events collected with the BESIII detector, the decays of $I ¨ _{c J} \to I ¨ I ¨ $ ( $J$ =0, 1, 2) have been studied via the decay $Ï(368…

Measurement of the branching fraction of $D_{s}^{+} \to I ¨ ^{+} I^½_{I ¨} $ via $I ¨ ^{+} \to I^¼^{+} I^½_{I^} ¼ I^½_{I ¨} ˉ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +592

Utilizing $7.33 fb^{- 1}$ of $e^{+} e^{-}$ collision data taken at the center-of-mass energies of 4.128, 4.157, 4.178, 4.189, 4.199, 4.209, 4.219, and 4.226 GeV with the BESIII…

Measurement of the $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} I ¨ ^{0}$ cross sections from $s =$ 2.000 to 3.080 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Based on $e^{+} e^{-}$ collision data collected at center-of-mass energies from 2.000 to 3.080 GeV by the BESIII detector at the BEPCII collider, a partial wave analysis is performe…

Precise Measurement of Born Cross Sections for $e^{+} e^{-} \to D D ˉ$ at $s = 3.80 - 4.95$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 3.80 to 4.95 GeV, corresponding to an integrated luminosity of…

Cross section measurement of $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ at $s = 2.00 - 3.08 GeV$

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

The cross sections of the process $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ are measured at fifteen center-of-mass energies $s$ from $2.00$ to $3.08 GeV$ with the BESIII det…

Study of the Decay $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ and Observation of the W-annihilation Decay $D_{s}^{+} \to a_{0} (980)^{+} I ¨ ^{0}$

M. Ablikim, M. N. Achasov, P. Adlarson +498

The decay $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ is observed for the first time, using $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 6.32 fb $^{- 1}$ , col…