H. -R. Bao

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^{…

Search for $K_{S}^{0}$ invisible decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Based on $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII $e^{+} e^{-}$ storage ring, we search for $K_{S}^{0}$ invisible decays via the $…

Observation of $I ¨ (3686) \to 3 I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +651

Using $(2.712 \pm 0.014) \times 1 0^{9}$ $I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of $I ¨ (3686) \to 3 I ¨ $ decay w…

Updated model-independent measurement of the strong-phase differences between $D^{0}$ and $D ˉ^{0} \to K_{S / L}^{0} I ¨ ^{+} I ¨ ^{-}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

The strong-phase differences between $D^{0} \to K_{S / L}^{0} I ¨ ^{+} I ¨ ^{-}$ and $D ˉ^{0} \to K_{S / L}^{0} I ¨ ^{+} I ¨ ^{-}$ decays are one of the most important inputs in measuring the $C P$ violating a…

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1~{\rm p…

Amplitude Analysis of Singly Cabibbo-Suppressed Decay $I^_{c}^{+} \to p K^{+} K^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +683

Using a sample of $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 4.4 $fb^{- 1}$ collected with the BESIII detector at the BEPCII collider and produ…

First measurement of $I^£^{+} n \to I^ p$ and $I^£^{+} n \to I^£^{0} p$ cross sections via $I^£^{+}$ -nucleus scattering at an electron-positron collider

BESIII Collaboration, M. Ablikim, M. N. Achasov +678

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII storage ring, the reactions $I^£^{+} n \to I^ p$ and $Î£^{+}n\rightarrowÎ£^…

Observation of $I ¨ (3686) \to K^{-} I^ (1520) I^ˉ ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Based on $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (3686)$ events collected at the BESIII detector operating at the BEPCII collider, we present the first observation of the decay $Ï(3686)…

Search for $X (1870)$ via the decay $J / I ¨ \to I ¨ K^{+} K^{-} I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected by the BESIII detector at the BEPCII collider, we search for the decay $X (1870) \to K^{+} K^{-} I^\cdot$ via the $J/Ï\to…

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +657

An amplitude analysis of the Cabibbo-favored decay $D^{+} \to K^{-} I ¨ ^{+} I ¨ ^{+} I ¨ ^{0}$ is performed, using 7.93 $fb^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector a…

Search for the charmonium weak decay $J / I ¨ \to D ˉ^{0} K ˉ^{* 0} + c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +699

Based on a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected at the center-of-mass energy $s$ = 3.0969 GeV with the BESIII detector, we search for the charmonium ra…

First energy scan measurement of $e^{+} e^{-} \to K^{+} K^{-}$ around the $I ¨ (2 S)$ resonance

BESIII Collaboration, M. Ablikim, M. N. Achasov +684

We report the precise energy scan measurement of the cross section lineshape of $I ¨ (2 S) \to K^{+} K^{-}$ . The analysis is based on $e^{+} e^{-}$ collision data corresponding to an int…

Observation of an Altered $a_{0} (980)$ Line shape in $D^{+} \to I ¨ ^{+} I^\cdot I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +693

Using $20.3 fb^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector at $s = 3.773 GeV$ , we perform the first amplitude analysis of the decay $D^+\to…

First Measurement of the Relative Phase between Proton Psionic Form Factors

BESIII Collaboration, M. Ablikim, M. N. Achasov +754

The relative phase between the time-like form factors of the proton is a crucial observable for a complete understanding of its internal structure, yet it has remained unmeasured d…

First measurements of the branching fractions of $J / I ¨ \to I^^{0} I^ˉ K_{S}^{0} + c . c .$ , $J / I ¨ \to I^^{0} I^ˉ £^{0} K_{S}^{0} + c . c .$ , and $J / I ¨ \to I^^{0} I^ˉ £^{-} K^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +686

By analyzing $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII, the decays $J / I ¨ \to I^^{0} I^ˉ K_{S}^{0} + c . c .$ , $J / I ¨ \to I^^{0} I^ˉ £^{0} K_{S}^{0} + c . c .$ …

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.)…

Observation of $D \to K ˉ_{1} (1270) I^¼^{+} I^½_{I^} ¼$ and test of lepton flavor universality with $D \to K ˉ_{1} (1270) ℓ^{+} I^½_{ℓ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +651

By analyzing 7.93 $f b^{- 1}$ of $e^{+} e^{-}$ collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we report t…

Test of lepton universality and measurement of the form factors of $D^{0} \to K^{*} (892)^{-} I^¼^{+} I^½_{I^} ¼$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

We report a first study of the semileptonic decay $D^{0} \to K^{-} I ¨ ^{0} I^¼^{+} I^½_{I^} ¼$ by analyzing an $e^{+} e^{-}$ annihilation data sample of $7.9 fb^{- 1}$ collected at the c…

First Measurement of the Decay Dynamics in the Semileptonic Transition of the $D^{+ (0)}$ into the Axial-vector Meson $K ˉ_{1} (1270)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +677

Using $e^{+} e^{-}$ data taken at the center-of-mass energy of 3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3 fb $^{- 1}$ , we report the first measu…

Precise measurement of the form factors in $D^{0} \to K^{} (892)^{-} I^¼^{+} I^½_{I^} ¼$ and test of lepton universality with $D^{0} \to K^{} (892)^{-} ℓ^{+} I^½_{ℓ}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

We report a study of the semileptonic decay $D^{0} \to K ˉ^{0} I ¨ ^{-} I^¼^{+} I^½_{I^} ¼$ based on a sample of $7.9 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at a center…

Search for the electromagnetic Dalitz decays $I ¨ _{c J} \to e^{+} e^{-} I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Using a data sample of $(2.712 \pm 0.014) \times 1 0^{9}$ $I ¨ (3686)$ events collected at $s = 3.686$ GeV by the BESIII detector, we search for the rare electromagnetic Dalitz dec…

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…

Observation of Three Resonant Structures in the Cross Section of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} h_{c}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

Using $e^{+} e^{-}$ collision data collected with the BESIII detector operating at the Beijing Electron Positron Collider, the cross section of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} h_{c}$ is measured at 5…

Measurements of the branching fractions of $I ¨ _{c J} \to I ¨ I ¨ I^\cdot, I ¨ I ¨ I^\cdot^{'}$ and $I ¨ K^{+} K^{-} I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +683

Using a sample of $(2712.4 \pm 14.3) \times 1 0^{6} I ¨ $ (3686) events collected by the BESIII detector at the BEPCII collider, we measure the branching fractions of the decays $Ï_{cJ}…

Measurement of the space-like $I ¨ ^{0}$ transition form factor

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on $2.93 fb^{- 1}$ of $e^{+} e^{-}$ collision data taken with the BESIII detector at a center-of-mass energy of $3.773 GeV$ , the two-photon fusion process $e^+e^-\t…

Study of the light scalar $a_{0} (980)$ through the decay $D^{0} \to a_{0} (980)^{-} e^{+} I^½_{e}$ with $a_{0} (980)^{-} \to I^\cdot I ¨ ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +654

Using 7.93 $f b^{- 1}$ of $e^{+} e^{-}$ collision data collected at a center-of-mass energy of 3.773 $GeV$ with the BESIII detector, we present an analysis of the decay $D^{0}…

Experimental study of the reaction $I^^{0} n \to I^ I^ X$ using $I^^{0}$ -nucleus scattering

BESIII Collaboration, M. Ablikim, M. N. Achasov +703

Using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector operating at the BEPCII storage ring in $2009$ , $2012$ , $2018$ , and $2019$ , we perform a search for…

Determination of CKM matrix element and axial vector form factors from weak decays of quantum-entangled strange baryons

BESIII Collaboration, M. Ablikim, M. N. Achasov +697

The electromagnetic structure of the nucleon can be determined from the scattering of electrons off a nucleon target. However, to study its axial structure, neutrino beams are requ…

Search for $I^\cdot_{c} (2 S) \to 2 (I ¨ ^{+} I ¨ ^{-})$ and improved measurement of $I ¨ _{c J} \to 2 (I ¨ ^{+} I ¨ ^{-})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

We search for the hadronic decay $I^\cdot_{c} (2 S) \to 2 (I ¨ ^{+} I ¨ ^{-})$ in the $I ¨ (3686) \to I^^{3} I^\cdot_{c} (2 S)$ radiative decay using $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected by the BESI…

Measurement of the Branching Fraction of \boldmath{ $I ¨ (2 S) \to I^^{3} I ¨ ^{0}$ }

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Based on $(2712.4 \pm 14.1) \times 1 0^{6} I ¨ (2 S)$ events, 7.9 fb $^{- 1}$ $I ¨ (3773)$ data, and 0.8 fb $^{- 1}$ off-resonance data samples collected with the BESIII detector, we measure the…

Measurement of the branching fractions of $D^{+} \to K^{+} K^{-} I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ , $I ¨ I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ , $K_{S}^{0} K^{+} I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ , $K_{S}^{0} K^{+} I^\cdot$ , and $K_{S}^{0} K^{+} I ¨ $ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +686

Using $20.3 fb^{- 1}$ of $e^{+} e^{-}$ collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector operating at the BEPCII collider, the branching…

Observation of $I ¨ _{c J} \to p p ˉ K_{S}^{0} K^{-} I ¨ ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +653

By analyzing $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $Ï_{cJ} \to p \bar{p} K^0_S K^- Ï^+ +…

Measurement of the Born cross section for $e^{+} e^{-} \to p K^{-} K^{-} I^ˉ ^{+}$ at $s =$ 3.5-4.9 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +695

Using $e^{+} e^{-}$ collision data corresponding to a total integrated luminosity of 20 $fb^{- 1}$ collected with the BESIII detector at the BEPCII collider, we present a measurem…

Observation of the electromagnetic radiative decays of the \boldmath{ $I^ (1520)$ } and \boldmath{ $I^ (1670)$ } to \boldmath{ $I^^{3} I^£^{0}$ }

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector, we report the first observation of the electromagnetic radiative decays of the $I^ (1520)$ and $Î(…

Search for sub-GeV dark particles in $I^\cdot \to I ¨ ^{0} + invisible$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +685

Using (10087 $\pm$ 44) $\times$ 10 $^{6}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII collider at the center-of-mass energy of $s = 3.097 GeV$ , we report th…

Measurement of Born Cross Sections and Effective Form Factors of $e^{+} e^{-} \to I^c ◯^{-} I^ˉ c ◯^{+}$ from $s$ = 3.7 to 4.7 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +635

Using $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 22.7 fb $^{- 1}$ , collected at center-of-mass energies between 3.7 and 4.7 GeV with the BESIII detector at…

Observation of the decay $I ¨ (3686) \to I^£^{0} I^ˉ £^{0} I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Using a dataset of $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay…

Precise Measurement of the $I^$ Electric Dipole Moment through the Entangled Strange Baryon-Antibaryon System

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

The dominance of matter over antimatter in the universe has consistently driven the pursuit of new physics beyond the Standard Model that violates charge-parity symmetry. Unlike th…

Measurements of the branching fractions of semileptonic $D_{s}^{+}$ decays via $e^{+} e^{-} \to D_{s}^{+} D_{s}^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

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…

Search for the radiative decays $D^{+} \to I^^{3} I ¨ ^{+}$ and $D^{+} \to I^^{3} K^{*+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +652

We search for the radiative decays $D^{+} \to I^^{3} I ¨ ^{+}$ and $D^{+} \to I^^{3} K^{*+}$ using 20.3~fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3…

Observation of $I ¨ _{c J} (J = 0, 1, 2) \to p p ˉ I^\cdot I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +677

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII storage ring, the decays $I ¨ _{c J} (J = 0, 1, 2) \to p p ˉ I^\cdot I^\cdot$ are…

Evidence of transverse polarization of $I^^{0}$ hyperon in $I ¨ (3686) \to I^^{0} I^ˉ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +684

Using $(2.712 \pm 0.014) \times 1 0^{9}$ $I ¨ (3686)$ events collected with the BESIII detector at the BEPCII collider, we report an evidence of $I^^{0}$ transverse polarization with a si…

Search for $D^{0} \to K^{-} I^\cdot e^{+} I^½_{e}$ , $D^{+} \to K_{S}^{0} I^\cdot e^{+} I^½_{e}$ and $D^{+} \to I^\cdot I^\cdot e^{+} I^½_{e}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +640

By analyzing $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 7.93 fb $^{- 1}$ , collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, w…

Search for the reaction channel $e^{+} e^{-} \to I^\cdot I^\cdot J / I ¨ $ and the isospin partner of the $Z_{c} (3900)$ at center-of-mass energies $s = 4.226 - 4.950$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +693

We search for the reaction channel $e^{+} e^{-} \to I^\cdot I^\cdot J / I ¨ $ in a data sample with center-of-mass energies from 4.226 to 4.950~GeV, which was collected by the BESIII detector operat…

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…

Measurements of Normalized Differential Cross Sections of Inclusive $I^\cdot$ Production in $e^{+} e^{-}$ Annihilation at Energy from 2.0000 to 3.6710 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process $e^{+} e^{-} \to I^\cdot + X$ , normalized by the tot…

Amplitude Analysis of the Isospin-Violating Decay $J / I ¨ \to I^^{3} I^\cdot I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +759

Using $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector, we perform the first amplitude analysis of the process $J / I ¨ \to I^^{3} I^\cdot I ¨ ^{0}$ . The decay is domina…

Study of $I^\cdot \to I ¨ ^{+} I ¨ ^{-} l^{+} l^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +639

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events accumulated with the BESIII detector, we analyze the decays $I^\cdot \to I ¨ ^{+} I ¨ ^{-} l^{+} l^{-}$ ( $l = e$ or $I^¼$ ) via the process…

Measurement of the Branching Fraction for the Decay $I ¨ _{c J} \to p p ˉ I^\cdot I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Using $(2712.4 \pm 14.3) \times 1 0^{6} I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $Ï_{cJ}(J=0,1…

First measurement of the absolute branching fractions of $I^£^{+}$ nonleptonic decays and test of the $I^ I = 1/2$ rule

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected by the BESIII detector at the center-of-mass energy $s = 3.097$ GeV, the first absolute measurement of the bran…

First Measurement of the Decay Asymmetry in the pure W-boson-exchange Decay $I^_{c}^{+} \to I^^{0} K^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +628

Based on $4.4 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at the center-of-mass energies between $4.60$ and $4.70 GeV$ with the BESIII detector at the BEPCII…

Search for lepton number violating decays of $D_{s}^{+} \to h^{-} h^{0} e^{+} e^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +655

Based on 7.33 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector operating at the BEPCII collider at center-of-mass energies from 4.128 to 4.226 GeV, a search fo…

Cross section measurement of $e^{+} e^{-} \to I^\cdot I ¨ (2 S)$ and search for $e^{+} e^{-} \to I^\cdot X ~ (3872)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

The energy-dependent cross section for $e^{+} e^{-} \to I^\cdot I ¨ (2 S)$ is measured at eighteen center of mass energies from 4.288 GeV to 4.951 GeV using the BESIII detector. Using the same da…

Measurement of the branching fractions of the Cabibbo-favored decays $I^_{c}^{+} \to I^ K_{S}^{0} K^{+}$ and $I^_{c}^{+} \to I^^{0} K_{S}^{0} I ¨ ^{+}$ and search for $I^_{c}^{+} \to I^£^{0} K_{S}^{0} K^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +664

Based on $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of about 4.5 fb $^{- 1}$ collected at center-of-mass energies between 4599.53 MeV and 4698.82 MeV with…

Precise measurement of the $e^{+} e^{-} \to D_{s}^{+} D_{s}^{-}$ cross sections at center-of-mass energies from threshold to 4.95 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +644

Using the $e^{+} e^{-}$ collision data collected with the BESIII detector operating at the BEPCII collider, at center-of-mass energies from the threshold to $4.95$ ~GeV, we present preci…

Search for CP violation in $e^{+} e^{-} \to I ¨ (3770) \to D^{0} D ˉ^{0}$ via $D - > K_{S}^{0} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +701

Utilizing data sample of electron-positron collisions recorded with the BESIII detector at the center of mass energy of 3.773 GeV, corresponding to an integrated luminosity of 20.2…

Study of $D_{s}^{+} \to f_{0} (980) I ¨ ^{+}$ and $I ¨ I ¨ ^{+}$ decays through $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +655

We perform the first amplitude analysis of $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ decays, based on data samples of electron-positron collisions recorded with the BESIII detector at center-of…

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…

Search for the lepton number violating process $J / I ¨ \to K^{+} K^{+} e^{-} e^{-} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector, we search for the lepton number violating decay $J / I ¨ \to K^{+} K^{+} e^{-} e^{-} + c . c .$ for the first t…

Study of the decay Ï(3686) \to Î£^{0}\barÎ£^{0}Ï

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

Using $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decay $I ¨ (3686) \to I^£^{0} I^ˉ £^{0} I ¨ $ is observed fo…

Precise Measurement of the $I ¨ _{c 0}$ Resonance Parameters and Branching Fractions of $I ¨ _{c 0, c 2} \to I ¨ ^{+} I ¨ ^{-} / K^{+} K^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +653

By analyzing a $I ¨ (3686)$ data sample containing $(107.7 \pm 0.6) \times 1 0^{6}$ events taken with the BESIII detector at the BEPCII storage ring in 2009, the $I ¨ _{c 0}$ resonance param…

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…

Study of $f_{1} (1420)$ and $I^\cdot (1405)$ in the decay $J / I ¨ \to I^^{3} I ¨ ^{0} I ¨ ^{0} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +652

A partial-wave analysis is performed on the decay $J / I ¨ \to I^^{3} I ¨ ^{0} I ¨ ^{0} I ¨ ^{0}$ within the $I ¨ ^{0} I ¨ ^{0} I ¨ ^{0}$ invariant-mass region below 1.6 GeV $/ c^{2}$ , using $(10.09~\pm~0.04)…

Observation of a Doubly-strange Hyperon $I^ (1720)$ in $J / I ¨ \to K^{-} I^£^{0} I^ˉ ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +758

Based on a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector at BEPCII, we report the first observation of the decay $J/Ï\rightarrow K^- Î£^0…

Search for the rare decay $J / I ¨ \to I^^{3} D^{0} + c . c .$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Using $(10087 \pm 44) \times 1 0^{6} J / I ¨ $ events collected with the BESIII detector, we search for the rare decay $J / I ¨ \to I^^{3} D^{0} + c . c .$ for the first time. No obvious signal is observed an…

Improved measurements of the Dalitz decays $I^\cdot / I^\cdot^{'} \to I^^{3} e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +628

Based on a data sample of 10 billion $J / I ¨ $ events collected with the BESIII detector, improved measurements of the Dalitz decays $I^\cdot / I^\cdot^{'} \to I^^{3} e^{+} e^{-}$ are performed, where t…

Helicity amplitude and branching fraction measurement of $I ¨ _{c J} \to I^ I^ˉ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Utilizing $2712.4 \pm 14.3$ million $I ¨ (3686)$ events accumulated by the BESIII experiment, we perform a partial wave analysis of $Ï(3686)\rightarrowÎ³Ï_{cJ}\rightarrowÎ³Î\barÎ…

Observation of the decay $h_{c} \to 3 (I ¨ ^{+} I ¨ ^{-}) I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +648

Based on $(2712.4 \pm 14.1) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector, we study the decays $h_{c} \to 3 (I ¨ ^{+} I ¨ ^{-}) I ¨ ^{0}$ , $h_{c} \to 2 (I ¨ ^{+} I ¨ ^{-}) I ¨ $ , $h_{c…

Study of the electromagnetic Dalitz decay $J / I ¨ \to e^{+} e^{-} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +640

We report the first measurement of the di-electron invariant mass dependent transition form factor in the electromagnetic Dalitz decay $J / I ¨ \to e^{+} e^{-} I ¨ ^{0}$ using $(10087 \pm 44) \…

Cross sections measurement of $e^{+} e^{-} \to I^ (1530)^{0} I^ˉ ^{0} + c . c .$ and search for $I ¨ (3770) \to I^ (1530)^{0} I^ˉ ^{0} + c . c .$

BESIII Colaboration, :, M. Ablikim +681

Using $e^{+} e^{-}$ collision data collected with the BESIII detector corresponding to an integrated luminosity of 44.2 fb $^{- 1}$ , we measure the Born cross sections for the process $e^…

The Production and Decay Dynamics of the Charmed Baryon $I^_{c}^{+}$ in $e^{+} e^{-}$ Annihilations near Threshold

BESIII Collaboration, M. Ablikim, M. N. Achasov +700

The study of the charmed baryons is crucial for investigating the strong and weak interactions in the Standard Model and for gaining insights into the internal structure of baryons…

First Observation of $I^$ Hyperon Transverse Polarization in $I ¨ (3686) \to I^ I^ˉ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +687

Based on $(448.1 \pm 2.9) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector at the BEPCII collider, we present the first observation of spin transverse polarization o…

Search for $e^{+} e^{-} \to I ¨ I ¨ _{c 0}$ and $I ¨ I^\cdot_{c 2} (1 D)$ at center-of-mass energies from 4.47 to 4.95 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Utilizing a data set of $6.7$ fb $^{- 1}$ from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes $e^{+}…

Improved measurement of absolute branching fraction of the inclusive decay $I^_{c}^{+} \to K_{S}^{0} X$

BESIII Collaboration, M. Ablikim, M. N. Achasov +676

By analyzing $4.5$ fb $^{- 1}$ of $e^{+} e^{-}$ collision data accumulated with the BESIII detector at center-of-mass energies ranging from $4599.53$ MeV to $4698.82$ MeV, we report t…

Measurements of the branching fractions of the $P$ -wave charmonium spin-singlet state $h_{c} (^{1} P_{1}) \to h^{+} h^{-} I ¨ ^{0} / I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

Based on $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (3686)$ events, we investigate four hadronic decay modes of the $P$ -wave charmonium spin-singlet state $h_{c} (^{1} P_{1}) \to h^{+} h^{-} I ¨ ^{0} / I^\cdot$ (…

Amplitude Analysis of the Decays $D^{0} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{+} I ¨ ^{-}$ and $I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +630

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

Search for $X (3872) \to I ¨ ^{0} I ¨ ^{0} I ¨ _{c 1, 2}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +644

Using 10.1 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector with center-of-mass energies between 4.15 GeV and 4.30 GeV, we search for the decays $X(3872)\toÏ^…

Measurement of $e^{+} e^{-} \to I^\cdot J / I ¨ $ Cross Section from $s =$ 3.808 GeV to 4.951 GeV

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

Using data samples with an integrated luminosity of 22.42 fb $^{- 1}$ collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the $e^{…

Study of the $I ¨ _{c J} \to I^ I^ˉ I^\cdot^{'}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +683

Using a data sample of $(2.712 \pm 0.014) \times 1 0^{9}$ $I ¨ (3686)$ events collected with the BESIII detector at the BEPCII collider, we investigate the decays $Ï_{cJ} \rightarrow Î\…

Measurement of cross sections of $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} I ¨ (3686)$ from $s =$ 4.682 to 4.951 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

The process $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} I ¨ (3686)$ 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…

Search for the charged lepton flavor violating decay $I ¨ (3686) \to e^{\pm} I^¼^{\mp}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +695

By analyzing $(2367.0 \pm 11.1) \times 1 0^{6}$ $I ¨ (3686)$ events collected in $e^{+} e^{-}$ collisions at $s = 3.686 GeV$ with the BESIII detector at the BEPCII collider, we report t…

Search for $I^\cdot_{1} (1855)$ in $I ¨ _{c J} \to I^\cdot I^\cdot I^\cdot^{'}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on a sample of $2.7 \times 1 0^{9}$ $I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, an analysis of the decay $Ï(3686)\toÎ³Ï_{cJ}, Ï_{cJ}\…

Measurement of the branching fraction of $I^\cdot \to I^¼^{+} I^¼^{-}$ and search for $I^\cdot \to e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +702

We analyze the decay of $I^\cdot \to ℓ^{+} ℓ^{-} (ℓ = e, I^¼)$ via $J / I ¨ \to I^^{3} I^\cdot^{'}$ and $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} I^\cdot$ , based on (10087 $\pm$ 44) $\times$ 10 $^{6}$ $J / I ¨ $ event…

Search for $D^{0} \to K_{S}^{0} K^{-} e^{+} I^½_{e}$ , $D^{+} \to K_{S}^{0} K_{S}^{0} e^{+} I^½_{e}$ , and $D^{+} \to K^{+} K^{-} e^{+} I^½_{e}$

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

A search has been performed for the semileptonic decays $D^{0} \to K_{S}^{0} K^{-} e^{+} I^½_{e}$ , $D^{+} \to K_{S}^{0} K_{S}^{0} e^{+} I^½_{e}$ and $D^{+} \to K^{+} K^{-} e^{+} I^½_{e}$ , us…

Search for $I^ S = 2$ nonleptonic hyperon decays $I^c ◯^{-} \to I^£^{0} I ¨ ^{-}$ and $I^c ◯^{-} \to n K^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +644

Using $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected by the BESIII detector at the center-of-mass energy of $s = 3.686$ GeV, we search for the first time for t…

Determination of the number of $I ¨ (3686)$ events taken at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +647

The number of $I ¨ (3686)$ events collected by the BESIII detector during the 2021 run period is determined to be $(2259.3 \pm 11.1) \times 1 0^{6}$ by counting inclusive $I ¨ (3686)$ hadro…

Study of the semileptonic decay $D^{0} \to K ˉ^{0} I ¨ ^{-} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +656

We report an improved study of the semileptonic decay $D^{0} \to K ˉ^{0} I ¨ ^{-} e^{+} I^½_{e}$ based on a sample of $7.9 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected a…

First study of antihyperon-nucleon scattering $I^ˉ p \to I^ˉ p$ and measurement of $I^ p \to I^ p$ cross section

BESIII Collaboration, M. Ablikim, M. N. Achasov +644

Using $(10.087 \pm 0.044) \times 1 0^{9}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII storage ring, the processes $I^ p \to I^ p$ and $I^ˉ p \to I^ˉ p$ …

Cross section measurement of $e^{+} e^{-} \to I ¨ ^{0} I ¨ ^{0} I ¨ (3686)$ from $s =$ 4.008 GeV to 4.951 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +682

Using data samples with a total integrated luminosity of $22.1 f b^{- 1}$ at center-of-mass energies between 4.008 and 4.951~GeV collected with the BESIII detector, the cross sec…

Measurement of Born cross section of $e^{+} e^{-} \to I^£^{0} I^ˉ £^{0}$ at $s = 3.50 - 4.95$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +654

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at the BEPCII collider at thirty-two center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated…

Measurements of branching fractions of $D^{0} \to K^{-} 3 I ¨ ^{+} 2 I ¨ ^{-}$ , $D^{0} \to K^{-} 2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ and $D^{+} \to K^{-} 3 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +687

Utilizing $7.9 f b^{- 1}$ of $e^{+} e^{-}$ collision data taken with the BESIII detector at the center-of-mass energy of 3.773 GeV, we report the measurements of absolute branching f…

Observation and branching fraction measurements of $I ¨ _{c J} \to p p ˉ K_{S}^{0} K_{S}^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +703

Based on $(2.712 \pm 0.014) \times 1 0^{9}$ $I ¨ (3686)$ events collected with the BESIII detector, the decays $I ¨ _{c J} \to p p ˉ K_{S}^{0} K_{S}^{0}$ ( $J = 0, 1, 2$ ) are observed for the f…

Search for $e^{+} e^{-} \to I^\cdot^{'} I ¨ (2 S)$ at center-of-mass energies from 4.66 to 4.95 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

Using data samples with an integrated luminosity of $4.67 fb^{- 1}$ collected by the BESIII detector operating at the BEPCII collider, we search for the process $e^+e^- \ri…

Search for the Rare Decays $D_{s}^{+} \to h^{+} (h^{0}) e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +628

Using 7.33~fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector at center-of-mass energies in the range of $s = 4.128 - 4.226$ ~GeV, we search for the rare…

Search for the lepton number violating process $I^^{-} \to I^£^{+} e^{-} e^{-} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +691

We present a search for the lepton number violating decay $I^^{-} \to I^£^{+} e^{-} e^{-} + c . c .$ with $(10087 \pm 44) \times 1 0^{6}$ $J / I ¨ $ events collected by the BESIII detector at the BEPC…

Observation of a rare beta decay of the charmed baryon with a Graph Neural Network

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

The beta decay of the lightest charmed baryon $I^_{c}^{+}$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for inv…

Search for a bound state of $I^_{c} I^ˉ £_{c}$ near threshold

BESIII Collaboration, M. Ablikim, M. N. Achasov +698

We search for a possible $I^_{c} I^£ ˉ_{c}$ bound state, denoted as $H_{c}^{\pm}$ , via the $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I^_{c}^{+} I^ˉ _{c}^{-}$ process for the first time. T…

Search for the lepton number violation decay $I ¨ \to I ¨ ^{+} I ¨ ^{+} e^{-} e^{-} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

The lepton number violation decay $I ¨ \to I ¨ ^{+} I ¨ ^{+} e^{-} e^{-} + c . c .$ is searched for via $J / I ¨ \to I ¨ I^\cdot$ using a data sample of $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / I ¨ $ events collec…

Precise measurement of the form factors in $D^{0} \to K^{} (892)^{-} ℓ^{+} I^½_{ℓ}$ and observation of $D^{0} \to K_{2}^{} (1430)^{-} ℓ^{+} I^½_{ℓ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +680

We report a study of the semileptonic decays $D^{0} \to K ˉ^{0} I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ (where $ℓ = e, I^¼$ ) based on a sample of $20.3 fb^{- 1}$ of $e^{+} e^{-}$ annihilati…