S. Fang

collaborators

8 papers

hep-ex2026

Dalitz decay of $K^{*} (892) \to K ℓ^{+} ℓ^{-}$ : A New Probe for Hadronic Structure and Dark Photon Searches

Benhou Xiang, Wanling Chang, Shuangshi Fang +1

We present the first comprehensive study of the rare Dalitz decay $K^{*} (892) \to K ℓ^{+} ℓ^{-} (ℓ = e, I^¼)$ , providing a prediction for the branching fraction and the d…

hep-ex2026

Observation of the Exotic State $I ¨ _{1} (1600)$ in $I ¨ (2 S) \to I^^{3} I ¨ _{c 1}, I ¨ _{c 1} \to I ¨ ^{+} I ¨ ^{-} I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +750

A partial wave analysis of the process $I ¨ (2 S) \to I^^{3} I ¨ _{c 1}, I ¨ _{c 1} \to I ¨ ^{+} I ¨ ^{-} I^\cdot^{'}$ is performed using $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (2 S)$ events collecte…

hep-ex2026

First Observation of \boldmath{ $D^{+} \to a_{0} (980) I ¨ $ and $D^{+} \to a_{0} (980)^{+} f_{0} (500)$ } in \boldmath{ $D^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ and $D^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$ } Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +756

We perform the first amplitude analysis of the singly Cabibbo-suppressed decays $D^{+} \to I ¨ ^{+} I ¨ ^{+ (0)} I ¨ ^{- (0)} I^\cdot$ , using $e^{+} e^{-}$ collision data collected with the BESIII detec…

hep-ex2026

Measurement of the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ via $I ¨ (3686) \to I^^{3} I ¨ _{c J}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +762

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector operating at BEPCII, the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ ( $J = 0, 1, 2$ ) a…

hep-ex2026

Improved measurement of the branching fraction of $D_{s}^{+} \to I^¼^{+} I^½_{I^} ¼$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

Using $e^{+} e^{-}$ collision data with an integrated luminosity of $7.33 fb^{- 1}$ collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector ope…

hep-ex2026

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…

Dalitz decay of K∗(892)→Kℓ+ℓ−: A New Probe for Hadronic Structure and Dark Photon Searches

Observation of the Exotic State I¨1​(1600) in I¨(2S)→I^3I¨c1​,I¨c1​→I¨+I¨−I^⋅′

First Observation of \boldmath{D+→a0​(980)I¨ and D+→a0​(980)+f0​(500)} in \boldmath{D+→I¨+I¨+I¨−I^⋅ and D+→I¨+I¨0I¨0I^⋅} Decays

Measurement of the branching fractions of I¨cJ​→I¨+I¨−I¨0I¨0 via I¨(3686)→I^3I¨cJ​

Improved measurement of the branching fraction of Ds+​→I^¼+I^½I^​¼

Precise measurement of the form factors in D0→K∗(892)−ℓ+I^½ℓ​ and observation of D0→K2∗​(1430)−ℓ+I^½ℓ​

Dalitz decay of $K^{*} (892) \to K ℓ^{+} ℓ^{-}$ : A New Probe for Hadronic Structure and Dark Photon Searches

Observation of the Exotic State $I ¨ _{1} (1600)$ in $I ¨ (2 S) \to I^^{3} I ¨ _{c 1}, I ¨ _{c 1} \to I ¨ ^{+} I ¨ ^{-} I^\cdot^{'}$

First Observation of \boldmath{ $D^{+} \to a_{0} (980) I ¨ $ and $D^{+} \to a_{0} (980)^{+} f_{0} (500)$ } in \boldmath{ $D^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ and $D^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$ } Decays

Measurement of the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ via $I ¨ (3686) \to I^^{3} I ¨ _{c J}$

Improved measurement of the branching fraction of $D_{s}^{+} \to I^¼^{+} I^½_{I^} ¼$

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