X. Xie

activity

20242026

collaborators

8 papers

hep-ex2026

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…

hep-ex2025

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…

hep-ex2025

Measurement of the Inclusive Cross Sections of Prompt $J / I ¨ $ and $I ¨ (3686)$ Production in $e^{+} e^{-}$ Annihilation from $s = 3.808$ to $4.951$ GeV

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

The inclusive cross sections of prompt $J / I ¨ $ and $I ¨ (3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb $^{- 1}$ of $e^{+}e…

hep-ex2025

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 $…

hep-ex2025

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)…

hep-ex2025

Search for $I^\cdot_{c} (2 S) \to p p ˉ K^{+} K^{-}$ and measurement of $I ¨ _{c J} \to p p ˉ K^{+} K^{-}$ in $I ¨ (3686)$ radiative decays

M. Ablikim, M. N. Achasov, P. Adlarson +647

A search for $I^\cdot_{c} (2 S) \to p p ˉ K^{+} K^{-}$ , together with measurement of branching fractions of $I ¨ _{c J (J = 0, 1, 2)} \to p p ˉ K^{+} K^{-}$ in the $I ¨ (3686) \to I^^{3} I^\cdot_{c} (2 S)$ and the $Ï(368…

Study of I^⋅→I¨+I¨−l+l−

Measurement of cross sections of e+e−→KS0​KS0​I¨(3686) from s​= 4.682 to 4.951 GeV

Measurement of the Inclusive Cross Sections of Prompt J/I¨ and I¨(3686) Production in e+e− Annihilation from s​=3.808 to 4.951 GeV

Search for KS0​ invisible decays

Observation of I¨(3686)→K−I^(1520)I^ˉ++c.c.

Search for I^⋅c​(2S)→ppˉ​K+K− and measurement of I¨cJ​→ppˉ​K+K− in I¨(3686) radiative decays

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

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

Measurement of the Inclusive Cross Sections of Prompt $J / I ¨ $ and $I ¨ (3686)$ Production in $e^{+} e^{-}$ Annihilation from $s = 3.808$ to $4.951$ GeV

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

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

Search for $I^\cdot_{c} (2 S) \to p p ˉ K^{+} K^{-}$ and measurement of $I ¨ _{c J} \to p p ˉ K^{+} K^{-}$ in $I ¨ (3686)$ radiative decays