S. Fang

works on

BESIII detector 1 branching fraction 1 double dalitz decay 1 eta meson decay 1 rare decay 1

From the 1 of 4 linked papers with an AI index.

collaborators

4 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

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

Observation of $D_{s}^{+} \to a_{0} (980)^{+} f_{0} (500)$ in the Amplitude Analysis of $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +716

We report the first observation of the decay $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$ in a data set corresponding to an integrated luminosity of 7.33 fb $^{- 1}$ , collected in $e^{+} e^{-}$ collisions…

hep-ex2026

First Amplitude Analysis of $D^{0} \to K^{-} I ¨ ^{0} e^{+} I^½_{e}$ and Observation of $D^{0} \to K_{2}^{*} (1430)^{-} e^{+} I^½_{e}$

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

We present the first amplitude analysis of the semileptonic decay $D^{0} \to K^{-} I ¨ ^{0} e^{+} I^½_{e}$ by analyzing $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of…

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

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

Observation of Ds+​→a0​(980)+f0​(500) in the Amplitude Analysis of Ds+​→I¨+I¨0I¨0I^⋅

First Amplitude Analysis of D0→K−I¨0e+I^½e​ and Observation of D0→K2∗​(1430)−e+I^½e​

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

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

Observation of $D_{s}^{+} \to a_{0} (980)^{+} f_{0} (500)$ in the Amplitude Analysis of $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$

First Amplitude Analysis of $D^{0} \to K^{-} I ¨ ^{0} e^{+} I^½_{e}$ and Observation of $D^{0} \to K_{2}^{*} (1430)^{-} e^{+} I^½_{e}$