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…

Three-pion Bose-Einstein correlations measured in proton-proton collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1128

A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of $\sqr…

Synthesis and Properties of c-axis Oriented Epitaxial MgB2 Thin Films

S. D. Bu, D. M. Kim, J. H. Choi +10

We report the growth and properties of epitaxial MgB2 thin films on (0001) Al2O3 substrates. The MgB2 thin films were prepared by depositing boron films via RF magnetron sputtering…

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

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

Using a sample of 10 billion $J/\ddot{I}ˆ$ events collected with the BESIII detector, the decays $\hat{I}{\cdot }^{\prime }\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$, $\hat{I}{\cdot }^{\prime }\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0\ddot{I}{€}^0$ and $η' \to 4 π^{…

Systematic study of two-proton radioactivity with a screened electrostatic barrier

Y. T. Zou, X. Pan, X. H. Li +3

In this study, a phenomenological model is proposed based on Wentzel-Kramers-Brillouin (WKB) theory and applied to investigate the two-proton ($2p$) radioactive half-lives of nucle…

Search for $K_S^0$ invisible decays

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

Based on $(1.0087\pm 0.0044)\times 10^{10}$ $J/\ddot{I}ˆ$ 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 $\ddot{I}ˆ(3686)\to 3\ddot{I}•$

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

Using $(2.712\pm 0.014)\times 10^9$ $\ddot{I}ˆ(3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of $\ddot{I}ˆ(3686)\to 3\ddot{I}•$ decay w…

Search for the semileptonic decays $D_s^{+}\to K_1(1270{)}^0{e}^{+}\hat{I}{½}_e$ and $D_s^{+}\to b_1(1235{)}^0{e}^{+}\hat{I}{½}_e$

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…

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

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

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

Observation of $\ddot{I}ˆ(3686)\to K^{-}\hat{I}›(1520)\bar{\hat{I}}{ž}^{+}+c.c.$

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

Based on $(2712.4\pm 14.3)\times 10^6$ $\ddot{I}ˆ(3686)$ events collected at the BESIII detector operating at the BEPCII collider, we present the first observation of the decay $ψ(3686)…

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\equivσ(e^{+}e^{-…

First Observation of the Semileptonic Decay $\hat{I}{›}_c^{+}\to p{K}^{-}{e}^{+}\hat{I}{½}_e$

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

Using $4.5{\mathrm{fb}}^{-1}$ 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 $p\bar{\hat{I}}›$ Threshold in $e^{+}{e}^{-}\to p{K}^{-}\bar{\hat{I}}›+c.c.$

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

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

Observation of an Altered $a_0(980)$ Line shape in $D^{+}\to \ddot{I}{€}^{+}\hat{I}\cdot \hat{I}\cdot$

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

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

Observation of the doubly-charmed-baryon decay ${\hat{I}ž}_{cc}^{++}\to {\hat{I}ž}_c^0\ddot{I}{€}^{+}\ddot{I}{€}^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A search for the doubly-charmed-baryon decay ${\hat{I}ž}_{cc}^{++}\to {\hat{I}ž}_c^0\ddot{I}{€}^{+}\ddot{I}{€}^{+}$ is performed using proton-proton collision data collected by the LHCb experiment at…

Observation of $D^{+}\to K_S^0{a}_0(980{)}^{+}$ in the amplitude analysis of $D^{+}\to K_S^0\ddot{I}{€}^{+}\hat{I}\cdot$

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

We perform for the first time an amplitude analysis of the decay $D^{+}\to K_S^0\ddot{I}{€}^{+}\hat{I}\cdot$ and report the observation of the decay $D^{+}\to K_S^0{a}_0(980{)}^{+}$ using 2.93 fb…

Test of lepton flavour universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays at large dilepton invariant mass

LHCb collaboration, R. Aaij, M. Abdelfatah +1115

Muon-electron universality is tested in $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays, in the dilepton-invariant-mass region above the $\ddot{I}ˆ(2S)$ resonance. The analysis uses beauty mesons…

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…

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…

First measurements of the branching fractions of $J/\ddot{I}ˆ\to \hat{I}{ž}^0\bar{\hat{I}}›K_S^0+c.c.$, $J/\ddot{I}ˆ\to \hat{I}{ž}^0\bar{\hat{I}}{\pounds }^0{K}_S^0+c.c.$, and $J/\ddot{I}ˆ\to \hat{I}{ž}^0\bar{\hat{I}}{\pounds }^{-}{K}^{+}+c.c.$

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

By analyzing $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector at the BEPCII, the decays $J/\ddot{I}ˆ\to \hat{I}{ž}^0\bar{\hat{I}}›K_S^0+c.c.$, $J/\ddot{I}ˆ\to \hat{I}{ž}^0\bar{\hat{I}}{\pounds }^0{K}_S^0+c.c.$…

Observation of the $J/\ddot{I}ˆ$ and $\ddot{I}ˆ(3686)$ decays into $\hat{I}\cdot \hat{I}{\pounds }^{+}\bar{\hat{I}}{\pounds }^{-}$

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

The decays $J/\ddot{I}ˆ\to \hat{I}\cdot \hat{I}{\pounds }^{+}\bar{\hat{I}}\pounds {}^{-}$ and $\ddot{I}ˆ(3686)\to \hat{I}\cdot \hat{I}{\pounds }^{+}\bar{\hat{I}}\pounds {}^{-}$ are observed for the first time, using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ 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 $e^{+}{e}^{-}\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ 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 $651{\mathrm{pb}}^{-1}$ accumulated at 22 center-of-mass energies from 2.00 to 3.08 GeV by the BESIII experiment, the process…

Observation of $D\to {\bar{K}}_1(1270)\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$ and test of lepton flavor universality with $D\to {\bar{K}}_1(1270){\ell }^{+}\hat{I}{½}_{\ell }$

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

By analyzing 7.93 $\mathrm{f}{\mathrm{b}}^{-1}$ 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 $D^0\to K^{\ast }(892{)}^{-}\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$

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

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

Associated $Z$ + $J/\ddot{I}ˆ$ production as a probe of multiparton interactions in the forward region

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1187

This letter reports a study of associated $Z$ boson and prompt $J/\ddot{I}ˆ$ production in proton-proton collisions at $\sqrt{s}=13$ TeV with the LHCb detector in the forward rapidity reg…

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

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

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

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

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

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

New measurements of $B_c^{+}$ decays into single charm final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1147

Using proton-proton collision data corresponding to an integrated luminosity of $9{\text{fb}}^{-1}$ collected by the LHCb experiment, searches are performed for $B_c^{+}$ mesons d…

Precision measurement of CP violation and branching fractions in $B^{\pm }\to K_{\mathrm{S}}^0{h}^{\pm }$ $(h=\ddot{I}€,K)$ decays and search for the rare decay $B_c^{\pm }\to K_{\mathrm{S}}^0{K}^{\pm }$

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta +1177

The decay $B^{\pm }\to K_{\mathrm{S}}^0\ddot{I}{€}^{\pm }$, with a $CP$ asymmetry expected to be close to zero in the Standard Model, is theoretically clean and sensitive to potential new p…

Measurement of branching fractions of $\hat{I}{›}_c^{+}$ decays to $\hat{I}{\pounds }^{+}{K}^{+}{K}^{-}$, $\hat{I}{\pounds }^{+}\ddot{I}•$ and $\hat{I}{\pounds }^{+}{K}^{+}\ddot{I}{€}^{-}(\ddot{I}{€}^0)$

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 average transverse momentum of forward prompt charged particles in $pp$ and $p\mathrm{Pb}$ collisions at $\sqrt{s_{NN}}=5.02\mathrm{TeV}$

LHCb collaboration, R. Aaij, M. Abdelfatah +1120

The paper reports the first measurements of the average transverse momentum of prompt charged particles in pp and pPb collisions at 5.02 TeV, studying its dependence on event multi…

Rapidity and multiplicity dependence of charged-particle flow in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta +1129

The elliptic and triangular flow of charged particles are measured using two-particle angular correlations in $p$Pb collisions in the pseudorapidity range \cal{2.0 $<|\hat{I}\cdot |<$ 4.8}.…

Observation of Three Resonant Structures in the Cross Section of $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{h}_c$

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 $e^{+}{e}^{-}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{h}_c$ is measured at 5…

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…

Amplitude analysis of $B^0\to \hat{I}{\cdot }_c(1S)K^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1185

An amplitude analysis of the $B^0\to \hat{I}{\cdot }_c(1S)K^{+}\ddot{I}{€}^{-}$ decays with $\hat{I}{\cdot }_c(1S)\to p\bar{p}$ is performed using a sample corresponding to an integrated luminosity of…

First evidence for direct CP violation in beauty to charmonium decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1131

The $CP$ asymmetry and branching fraction of the CKM-suppressed decay $B^{+}\to J/\ddot{I}ˆ\ddot{I}{€}^{+}$ are precisely measured relative to the favoured decay $B^+\!\to…

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

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

Using $(10087\pm 44)\times 10^6$$J/\ddot{I}ˆ$ events collected with the BESIII detector operating at the BEPCII storage ring in $2009$, $2012$, $2018$, and $2019$, we perform a search for…

Search for the lepton number violation decay $\ddot{I}•\to \ddot{I}{€}^{+}\ddot{I}{€}^{+}{e}^{-}{e}^{-}$ via $J/\ddot{I}ˆ\to \ddot{I}•\hat{I}\cdot$

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

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

Search for hyperon $\hat{I}”S=\hat{I}”Q$ violating decay $\hat{I}{ž}^0\to \hat{I}{\pounds }^{-}{e}^{+}\hat{I}{½}_e$

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

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

Search for $\bar{\hat{I}}›$-$\hat{I}›$ oscillations in the decay $J/\ddot{I}ˆ\to p{K}^{-}\bar{\hat{I}}›+c.c.$

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

We report the first search for $\bar{\hat{I}}›$--$\hat{I}›$ oscillations in the decay $J/\ddot{I}ˆ\to p{K}^{-}\bar{\hat{I}}›+c.c.$ by analyzing $1.31\times 10^9$ $J/\ddot{I}ˆ$ events accumulated with the BESIII detect…

Observation of Three Charmoniumlike States with $J^{PC}=1^{--}$ in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}\ddot{I}{€}^{+}$

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

The Born cross sections of the process $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}\ddot{I}{€}^{+}$ 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 $J/\ddot{I}ˆ\to {\hat{I}}^{3}3(\ddot{I}{€}^{+}\ddot{I}{€}^{-})$ Indicating a Second Resonance Near $p\bar{p}$ Threshold

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

Using a sample of $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events, which is about 45 times larger than that was previously analyzed, a further investigation on the $J/ψ\rightarrow γ3(π^…

Measurements of Differential Cross Sections of Inclusive $\ddot{I}{€}^0$ 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 $\ddot{I}{€}^0$ and $K_S^0$…

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 the leptonic decays $D^{\ast +}\to e^{+}\hat{I}{½}_e$ and $D^{\ast +}\to \hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$

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

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

Precision Measurement of the Decay $\hat{I}{\pounds }^{+}\to p{\hat{I}}^3$ in the Process $J/\ddot{I}ˆ\to \hat{I}{\pounds }^{+}\bar{\hat{I}}{\pounds }^{-}$

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

Using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, the radiative hyperon decay $\hat{I}\pounds \to p{\hat{I}}^3$ is studied at an electron-positron collider exp…

Measurement of the $\hat{I}{\text{c◯}}_c^0$ and $\hat{I}{ž}_c^0$ baryon lifetimes using hadronic $b$-baryon decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1143

The lifetimes of the $\hat{I}{\text{c◯}}_c^0$ and $\hat{I}{ž}_c^0$ baryons are measured using a $pp$ collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of $9~\rm…

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

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

The radiative hyperon decay $\hat{I}›\to n{\hat{I}}^3$ is studied using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector operating at BEPCII. The absolute branching frac…

Measurement of the $\ddot{I}ˆ(2S)$ to $J/\ddot{I}ˆ$ cross-section ratio as a function of centrality in PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the qua…

$B$-jet fragmentation with $B^{\pm }\to J/\ddot{I}ˆK^{\pm }$ decays in $\sqrt{s}=13$ TeV $pp$ collisions at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1166

The collinear and transverse-momentum-dependent jet fragmentation function and the radial profile for $B^{\pm }$ mesons in jets are measured. The $B^{\pm }$ mesons are reconstructed…

Observation of $a_0(1710{)}^{+}\to K_S^0{K}^{+}$ in study of the $D_s^{+}\to K_S^0{K}^{+}\ddot{I}{€}^0$ 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 $e^{+}{e}^{-}\to \hat{I}{›}_c^{+}\bar{\hat{I}}{›}_c^{-}$ at twelve center-of-mass energies from $4.6119$ to $4.9509\mathrm{GeV}$ using data samples collected by the BESIII detec…

First observation of the $\hat{I}{›}_b^0\to \hat{I}{›}_c^{+}{D}_s^{-}{K}^{+}{K}^{-}$ decay and search for pentaquarks in the $\hat{I}{›}_c^{+}{D}_s^{-}$ system

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1176

The $\hat{I}{›}_b^0\to \hat{I}{›}_c^{+}{D}_s^{-}{K}^{+}{K}^{-}$ decay is observed for the first time using the data sample from proton-proton collisions recorded at a center…

Measurement of the Born cross section for $e^{+}{e}^{-}\to p{K}^{-}{K}^{-}\bar{\hat{I}}{ž}^{+}$ at $\sqrt{s}=$ 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 ${\mathrm{fb}}^{-1}$ collected with the BESIII detector at the BEPCII collider, we present a measurem…

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

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

Using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, we report the first observation of the electromagnetic radiative decays of the $\hat{I}›(1520)$ and $Λ(…

Soft X-ray prompt emission from a high-redshift gamma-ray burst EP240315a

Y. Liu, H. Sun, D. Xu +191

Long gamma-ray bursts (GRBs) are believed to originate from core collapse of massive stars. High-redshift GRBs can probe the star formation and reionization history of the early un…

Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay $\hat{I}{›}_c^{+}\to p\hat{I}{\cdot }^{\prime }$

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

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

Cross section measurements of the $e^{+}{e}^{-}\to D^{\ast +}{D}^{\ast -}$ and $e^{+}{e}^{-}\to D^{\ast +}{D}^{-}$ 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 $e^{+}{e}^{-}\to D^{\ast +}{D}^{\ast -}$ and $e^{+}{e}^{-}\to D^{\ast +}{D}^{-}$ processes are measured using $e^{+}{e}^{-}$ collision data collected with the BESIII experiment at cen…

Study of $\hat{I}{›}_c^{+}\to \hat{I}›\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$ and Test of Lepton Flavor Universality with $\hat{I}{›}_c^{+}\to \hat{I}›{\ell }^{+}\hat{I}{½}_{\ell }$ Decays

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

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

Measurement of Born Cross Sections and Effective Form Factors of $e^{+}{e}^{-}\to \hat{I}{\text{c◯}}^{-}\bar{\hat{I}}{\text{c◯}}^{+}$ from$\sqrt{s}$ = 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 $\ddot{I}ˆ(3686)\to \hat{I}{\pounds }^0\bar{\hat{I}}{\pounds }^0\ddot{I}‰$

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

Using a dataset of $(27.12\pm 0.14)\times 10^8$ $\ddot{I}ˆ(3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay…

Measurement of the CKM angle ${\hat{I}}^3$ in $B^{\pm }\to D(\to K_{\mathrm{S}}^0{h}^{\prime +}{h}^{\prime -})h^{\pm }$ decays with a novel approach

The BESIII, LHCb Collaborations, : +1903

A measurement of the CKM angle ${\hat{I}}^3$ and related strong-phase parameters is performed using a novel, model-independent approach in ${B^{\pm}\rightarrow D(\rightarrow K^{0}_{\rm S} h…

Search for the radiative decays $D^{+}\to {\hat{I}}^3\ddot{I}{}^{+}$ and $D^{+}\to {\hat{I}}^3{K}^{\ast +}$

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

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

Measurements of Normalized Differential Cross Sections of Inclusive $\hat{I}\cdot$ 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 $e^{+}{e}^{-}\to \hat{I}\cdot +X$, normalized by the tot…

Observation of the decay $\ddot{I}{‡}_{cJ}\to \hat{I}{\text{c◯}}^{-}\bar{\hat{I}}{\text{c◯}}^{+}$

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

Using an $e^{+}{e}^{-}$ collision data sample of $(27.08\pm 0.14)\times 10^8$ $\ddot{I}ˆ(3686)$ events collected by the BESIII detector, we report the first observation of $χ_{cJ} \to Ω^-…

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…

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

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

Using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, we perform the first amplitude analysis of the process $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \ddot{I}{€}^0$. The decay is domina…

Study of $\hat{I}\cdot \to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{l}^{+}{l}^{-}$

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

Using a sample of $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events accumulated with the BESIII detector, we analyze the decays $\hat{I}\cdot \to \ddot{I}{€}^{+}\ddot{I}{€}^{-}{l}^{+}{l}^{-}$ ($l=e$ or $\hat{I}¼$) via the process…

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…

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

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 $\hat{I}{ž}^0$ hyperons

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

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

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…

Evidence of the Singly Cabibbo Suppressed decay $\hat{I}{›}_c^{+}\to p\ddot{I}{€}^0$

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

Evidence for the singly Cabibbo suppressed decay $\hat{I}{›}_c^{+}\to p\ddot{I}{€}^0$ is reported for the first time with a statistical significance of $3.7\ddot{I}ƒ$ based on 6.0 ${\mathrm{fb}}^{-1}$ of $e^+…

Search for CP violation in $e^{+}{e}^{-}\to \ddot{I}ˆ(3770)\to D^0{\bar{D}}^0$ via $D->K_S^0\ddot{I}{€}^0$

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 $D_s^{+}\to f_0(980)\ddot{I}{}^{+}$ and $\ddot{I}•\ddot{I}{€}^{+}$ decays through $D_s^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$

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

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

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

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

Based on $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, we search for the lepton number violating decay $J/\ddot{I}ˆ\to K^{+}{K}^{+}{e}^{-}{e}^{-}+c.c.$ for the first t…

Study of muon-tagged $D_{s1}(2460{)}^{+}$ and $D_{s1}(2536{)}^{+}$ decays to the $D_s^{+}{\pi }^{+}{\pi }^{-}$ final state

LHCb collaboration, R. Aaij, M. Abdelfatah +1119

Decays of the pseudovector $D_{s1}(2460{)}^{+}$ and $D_{s1}(2536{)}^{+}$ mesons to the three-body $D_s^{+}{\pi }^{+}{\pi }^{-}$ final state are studied. The data sample is based on decays of beauty hadr…

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

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

Based on $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector at BEPCII, the double Dalitz decay $\hat{I}{\cdot }^{\prime }\to e^{+}{e}^{-}{e}^{+}{e}^{-}$ is observed for the first time via the…

Precise measurement of the branching fractions of $J/\ddot{I}ˆ\to \bar{\hat{I}}›\ddot{I}{€}^{+}\hat{I}{\pounds }^{-}+c.c.$ and $J/\ddot{I}ˆ\to \bar{\hat{I}}›\ddot{I}{€}^{-}\hat{I}{\pounds }^{+}+c.c.$

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

Based on a data sample of $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, the branching fraction of $J/\ddot{I}ˆ\to \bar{\hat{I}}›\ddot{I}{€}^{+}\hat{I}{\pounds }^{-}+c.c.$ is measured…

Study of the decay ψ(3686) \to Σ^{0}\barΣ^{0}ϕ

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

Using $(27.12\pm 0.14)\times 10^8$ $\ddot{I}ˆ(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decay $\ddot{I}ˆ(3686)\to \hat{I}{\pounds }^0\bar{\hat{I}}{\pounds }^0\ddot{I}•$ is observed fo…

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 $…

Precise Measurement of the $\ddot{I}{‡}_{c0}$ Resonance Parameters and Branching Fractions of $\ddot{I}{‡}_{c0,c2}\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}/K^{+}{K}^{-}$

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

By analyzing a $\ddot{I}ˆ(3686)$ data sample containing $(107.7\pm 0.6)\times 10^6$ events taken with the BESIII detector at the BEPCII storage ring in 2009, the $\ddot{I}{‡}_{c0}$ resonance param…

Measurement of the cross sections for $e^{+}{e}^{-}\to \hat{I}\cdot \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ 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 $\hat{I}\cdot (1405)$ in the decay $J/\ddot{I}ˆ\to {\hat{I}}^3\ddot{I}{€}^0\ddot{I}{€}^0\ddot{I}{€}^0$

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

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

Observation of a Doubly-strange Hyperon $\hat{I}ž(1720)$ in $J/\ddot{I}ˆ\to K^{-}\hat{I}{\pounds }^0\bar{\hat{I}}{ž}^{+}+c.c.$

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

Based on a sample of $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector at BEPCII, we report the first observation of the decay $J/ψ\rightarrow K^- Σ^0…

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 $\sqrt{s}=4.178\sim 4.226$ GeV with the BESIII detec…

Determination of the $\hat{I}{›}_c^{+}$ spin via the reaction $e^{+}{e}^{-}\to \hat{I}{›}_c^{+}\bar{\hat{I}}{›}_c^{-}$

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

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

Search for the decays $B_{(c)}^{+}\to \hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼{\hat{I}}^3$

LHCb collaboration, R. Aaij, M. Abdelfatah +1128

The LHCb experiment searched for the rare radiative leptonic decays B⁺→μ⁺ν_μγ and B_c⁺→μ⁺ν_μγ in 13 TeV proton‑proton collisions, finding no signal and setting upper limits on thei…

Einstein Probe discovery of EP J005245.1-722843: a rare BeWD binary in the Small Magellanic Cloud?

A. Marino, H. Yang, F. Coti Zelati +32

On May 27 2024, the Wide-field X-ray Telescope onboard the Einstein Probe (EP) mission detected enhanced X-ray emission from a new transient source in the Small Magellanic Cloud (S…

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

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

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

Measurement of the branching fraction of $D_s^{+}\to \ddot{I}{„}^{+}\hat{I}{½}_{\ddot{I}}„$ via $\ddot{I}{„}^{+}\to \hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼\overline{\hat{I}{½}_{\ddot{I}}„}$

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

Utilizing $7.33{\mathrm{fb}}^{-1}$ 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 $e^{+}{e}^{-}\to K_S^0{K}_L^0\ddot{I}{€}^0$ cross sections from $\sqrt{s}=$ 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…

Cross sections measurement of $e^{+}{e}^{-}\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$ and search for $\ddot{I}ˆ(3770)\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$

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^…

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

Search for $e^{+}{e}^{-}\to \ddot{I}•\ddot{I}{‡}_{c0}$ and $\ddot{I}•\hat{I}{\cdot }_{c2}(1D)$ 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^{+}…

Cross section measurement of $e^{+}{e}^{-}\to K_S^0{K}_L^0$ at $\sqrt{s}=2.00-3.08\mathrm{GeV}$