X. M. Xian

activity

20242026

collaborators

20 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

First observation of $I^_{c} (2595)^{+} \to I^_{c}^{+} I ¨ ^{0} I ¨ ^{0}$ and $I^_{c} (2625)^{+} \to I^_{c}^{+} I ¨ ^{0} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +658

By analysing $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 368.48~pb $^{- 1}$ collected at the centre-of-mass energies of $s = 4.918$ and $4.951$ ~GeV…

hep-ex2025

Observation of $D \to K ˉ_{1} (1270) I^¼^{+} I^½_{I^} ¼$ and test of lepton flavor universality with $D \to K ˉ_{1} (1270) ℓ^{+} I^½_{ℓ}$

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

By analyzing 7.93 $f b^{- 1}$ 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…

hep-ex2025

Measurement of the branching fractions of doubly Cabibbo-suppressed $D$ decays

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

By analyzing $e^{+} e^{-}$ collision data collected at the center-of-mass energy of 3.773~GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3~fb $^{- 1}$ , we m…

hep-ex2025

Measurement of Born cross section of $e^{+} e^{-} \to I^£^{0} I^ˉ £^{0}$ at $s = 3.50 - 4.95$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +654

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at the BEPCII collider at thirty-two center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated…

hep-ex2025

Search for a $1^{-+}$ molecular state via $e^{+} e^{-} \to I^^{3} D_{s}^{+} D_{s 1}^{-} (2536) + c . c .$

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

We search, for the first time, for an exotic molecular state with quantum numbers $J^{P C} = 1^{-+}$ , called $X$ , via the process $e^{+} e^{-} \to I^^{3} D_{s}^{+} D_{s 1}^{-} (2536) + c . c .$ u…

Study of I^⋅→I¨+I¨−l+l−

First observation of I^c​(2595)+→I^c+​I¨0I¨0 and I^c​(2625)+→I^c+​I¨0I¨0

Observation of D→Kˉ1​(1270)I^¼+I^½I^​¼ and test of lepton flavor universality with D→Kˉ1​(1270)ℓ+I^½ℓ​

Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

Measurement of Born cross section of e+e−→I^£0I^ˉ£0 at s​=3.50−4.95 GeV

Search for a 1−+ molecular state via e+e−→I^3Ds+​Ds1−​(2536)+c.c.

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

First observation of $I^_{c} (2595)^{+} \to I^_{c}^{+} I ¨ ^{0} I ¨ ^{0}$ and $I^_{c} (2625)^{+} \to I^_{c}^{+} I ¨ ^{0} I ¨ ^{0}$

Observation of $D \to K ˉ_{1} (1270) I^¼^{+} I^½_{I^} ¼$ and test of lepton flavor universality with $D \to K ˉ_{1} (1270) ℓ^{+} I^½_{ℓ}$

Measurement of the branching fractions of doubly Cabibbo-suppressed $D$ decays

Measurement of Born cross section of $e^{+} e^{-} \to I^£^{0} I^ˉ £^{0}$ at $s = 3.50 - 4.95$ GeV

Search for a $1^{-+}$ molecular state via $e^{+} e^{-} \to I^^{3} D_{s}^{+} D_{s 1}^{-} (2536) + c . c .$