A. Kupsc

collaborators

13 papers

hep-ex2026

Search for sub-GeV dark particles in $I^\cdot \to I ¨ ^{0} + invisible$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +685

Using (10087 $\pm$ 44) $\times$ 10 $^{6}$ $J / I ¨ $ events collected with the BESIII detector at the BEPCII collider at the center-of-mass energy of $s = 3.097 GeV$ , we report th…

hep-ex2026

Helicity amplitude and branching fraction measurement of $I ¨ _{c J} \to I^ I^ˉ $

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

Utilizing $2712.4 \pm 14.3$ million $I ¨ (3686)$ events accumulated by the BESIII experiment, we perform a partial wave analysis of $Ï(3686)\rightarrowÎ³Ï_{cJ}\rightarrowÎ³Î\barÎ…

hep-ex2026

First Measurement of the Absolute Branching Fraction of $I^\cdot_{c} \to I^^{3} I^^{3}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +691

We apply a tag-and-probe method to precisely measure the absolute branching fraction of the decay $I^\cdot_{c} \to I^^{3} I^^{3}$ with the BESIII experiment at BEPCII. Starting with a large initia…

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

First measurement of the cross sections for $e^{+} e^{-} \to K^{0} K^{-} I ¨ ^{+} J / I ¨ + c . c .$ at $s$ from 4.396 to 4.951 GeV

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

Using $e^{+} e^{-}$ collision data at 19 center-of-mass energies ranging from $4.396$ to $4.951 GeV$ corresponding to a total integrated luminosity of $8.86 fb^{- 1}$ coll…

hep-ex2025

Measurements of branching fractions of $D^{0} \to K^{-} 3 I ¨ ^{+} 2 I ¨ ^{-}$ , $D^{0} \to K^{-} 2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ and $D^{+} \to K^{-} 3 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$

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

Utilizing $7.9 f b^{- 1}$ of $e^{+} e^{-}$ collision data taken with the BESIII detector at the center-of-mass energy of 3.773 GeV, we report the measurements of absolute branching f…

Search for sub-GeV dark particles in I^⋅→I¨0+invisible decay

Helicity amplitude and branching fraction measurement of I¨cJ​→I^I^ˉ

First Measurement of the Absolute Branching Fraction of I^⋅c​→I^3I^3

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

First measurement of the cross sections for e+e−→K0K−I¨+J/I¨+c.c. at s​ from 4.396 to 4.951 GeV

Measurements of branching fractions of D0→K−3I¨+2I¨−, D0→K−2I¨+I¨−2I¨0 and D+→K−3I¨+I¨−I¨0

Search for sub-GeV dark particles in $I^\cdot \to I ¨ ^{0} + invisible$ decay

Helicity amplitude and branching fraction measurement of $I ¨ _{c J} \to I^ I^ˉ $

First Measurement of the Absolute Branching Fraction of $I^\cdot_{c} \to I^^{3} I^^{3}$

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

First measurement of the cross sections for $e^{+} e^{-} \to K^{0} K^{-} I ¨ ^{+} J / I ¨ + c . c .$ at $s$ from 4.396 to 4.951 GeV

Measurements of branching fractions of $D^{0} \to K^{-} 3 I ¨ ^{+} 2 I ¨ ^{-}$ , $D^{0} \to K^{-} 2 I ¨ ^{+} I ¨ ^{-} 2 I ¨ ^{0}$ and $D^{+} \to K^{-} 3 I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$