E. V. D. Smagt

works on

form factors 2 angular analysis 1 BESIII 1 BESIII detector 1 BESIII experiment 1 branching fraction 1 branching fractions 1 charm meson 1 double dalitz decay 1 electric and magnetic moments 1 eta meson decay 1 hyperon decays 1

From the 5 of 22 linked papers with an AI index.

collaborators

22 papers

hep-ex2026

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

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

The BESIII experiment measured the rare decay of the eta meson into two electron-positron pairs, determining its branching fraction to be about 2.6 × 10⁻⁵.

hep-ex2026

Observation of $I^ (1530)^{0}$ Polarization and Determination of Its Electric and Magnetic Moments in $I ¨ (3686) \to I^ (1530)^{0} I^ˉ (1530)^{0}$

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

The BESIII experiment observed the polarization of the hyperon Ξ(1530)^0 in ψ(3686)→Ξ(1530)^0 anti‑Ξ(1530)^0 decays and measured its electric and magnetic multipole moments via ang…

hep-ex2026

Updated measurement of the branching fraction of $D_{s}^{+} \to I ¨ ^{+} I^½_{I ¨} $

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

Using a dataset of 7.33 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected with the BESIII detector at center-of-mass energies from 4.128 to 4.226 GeV, we report an updated measure…

hep-ex2026

Search for the isospin-violating decays $I ¨ _{cJ} \to I^ I^ˉ £^{0} + c . c .$ and $I^\cdot_{c} \to I^ I^ˉ £^{0} + c . c .$

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

Using a sample of $(2712.4 \pm 14.3) \times 1 0^{6}$ ~ $I ¨ (3686)$ events collected with the BESIII detector, we perform a search for the isospin-violating decays $Ï_{cJ}\toÎ\barÎ£^{0}+c…

hep-ex2026

Search for the charmonium weak decay $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$ and $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +720

We search for the weak decays $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$ and $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$ for the first time. The search is based on $(2712.4 \pm 14.3) \times 1 0^{6}$ events containin…

hep-ex2026

Study of the reactions $n ˉ p \to 2 I ¨ ^{+} I ¨ ^{-}$ , $2 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ , and $2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ using $J / I ¨ \to p I ¨ ^{-} n ˉ$

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

We report an experimental investigation of the reactions $n ˉ p \to 2 I ¨ ^{+} I ¨ ^{-}$ , $n ˉ p \to 2 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ , and $n ˉ p \to 2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ using $(10.087…

Measurement of the double Dalitz decay I^⋅→e+e−e+e−

Observation of I^(1530)0 Polarization and Determination of Its Electric and Magnetic Moments in I¨(3686)→I^(1530)0I^ˉ(1530)0

Updated measurement of the branching fraction of Ds+​→I¨+I^½I¨​

Search for the isospin-violating decays I¨cJ​→I^I^ˉ£0+c.c. and I^⋅c​→I^I^ˉ£0+c.c.

Search for the charmonium weak decay I¨(2S)→Ds−​I¨++c.c. and I¨(2S)→Ds−​I¨++c.c.

Study of the reactions nˉp→2I¨+I¨−, 2I¨+I¨−I¨0, and 2I¨+I¨−2I¨0 using J/I¨→pI¨−nˉ

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

Observation of $I^ (1530)^{0}$ Polarization and Determination of Its Electric and Magnetic Moments in $I ¨ (3686) \to I^ (1530)^{0} I^ˉ (1530)^{0}$

Updated measurement of the branching fraction of $D_{s}^{+} \to I ¨ ^{+} I^½_{I ¨} $

Search for the isospin-violating decays $I ¨ _{cJ} \to I^ I^ˉ £^{0} + c . c .$ and $I^\cdot_{c} \to I^ I^ˉ £^{0} + c . c .$

Search for the charmonium weak decay $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$ and $I ¨ (2 S) \to D_{s}^{-} I ¨ ^{+} + c . c .$

Study of the reactions $n ˉ p \to 2 I ¨ ^{+} I ¨ ^{-}$ , $2 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ , and $2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ using $J / I ¨ \to p I ¨ ^{-} n ˉ$