A. Pathak

activity

20242026

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hep-ex2024

Measurement of the Branching Fraction for the Decay $I ¨ _{c J} \to p p ˉ I^\cdot I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Using $(2712.4 \pm 14.3) \times 1 0^{6} I ¨ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $Ï_{cJ}(J=0,1…

hep-ex2024

Search for $I^\cdot_{c} (2 S) \to 2 (I ¨ ^{+} I ¨ ^{-})$ and improved measurement of $I ¨ _{c J} \to 2 (I ¨ ^{+} I ¨ ^{-})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

We search for the hadronic decay $I^\cdot_{c} (2 S) \to 2 (I ¨ ^{+} I ¨ ^{-})$ in the $I ¨ (3686) \to I^^{3} I^\cdot_{c} (2 S)$ radiative decay using $(27.12 \pm 0.14) \times 1 0^{8}$ $I ¨ (3686)$ events collected by the BESI…

hep-ex2024

Search for the massless dark photon with $D^0\toÏÎ³'$ and $D^0\toÎ³Î³'$

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

Using $7.9 f b^{- 1}$ of $e^{+} e^{-}$ collision data collected at $s = 3.773$ GeV with the BESIII detector at the BEPCII collider, we search for the massless dark photon with t…

hep-ex2024

Analysis of the dynamics of the decay $D^{+} \to K_{S}^{0} I ¨ ^{0} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

The branching fraction of $D^{+} \to K_{S}^{0} I ¨ ^{0} e^{+} I^½_{e}$ is measured for the first time using $7.93 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at the center-of-mas…

hep-ex2024

Observation of $I^\cdot_{c}$ (1S, 2S) and $I ¨ _{c J}$ decays to 2 $(I ¨ ^{+} I ¨ ^{-}) I^\cdot$ via $I ¨ $ (3686) radiative transitions

BESIII Collaboration, M. Ablikim, M. N. Achasov +642

Based on $2.7 \times 1 0^{9} I ¨ (3686)$ decays collected with the BESIII detector, the radiative decay $I ¨ (3686) \to γ 2 (I ¨ ^{+} I ¨ ^{-}) I^\cdot$ is investigated to measure properties of S-…

hep-ex2024

Observation of the Singly Cabibbo-Suppressed Decay $I^_{c}^{+} \to I^£^{-} K^{+} I ¨ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +616

The singly Cabibbo-suppressed decay $I^_{c}^{+} \to I^£^{-} K^{+} I ¨ ^{+}$ is observed for the first time with a statistical significance of $6.4 I ¨ $ by using 4.5 fb $^{- 1}$ of $e^{+} e^{-}$ c…

Measurement of the Branching Fraction for the Decay I¨cJ​→ppˉ​I^⋅I¨0

Search for I^⋅c​(2S)→2(I¨+I¨−) and improved measurement of I¨cJ​→2(I¨+I¨−)

Search for the massless dark photon with $D^0\toÏÎ³'$ and $D^0\toÎ³Î³'$

Analysis of the dynamics of the decay D+→KS0​I¨0e+I^½e​

Observation of I^⋅c​(1S, 2S) and I¨cJ​ decays to 2(I¨+I¨−)I^⋅ via I¨(3686) radiative transitions

Observation of the Singly Cabibbo-Suppressed Decay I^c+​→I^£−K+I¨+

Measurement of the Branching Fraction for the Decay $I ¨ _{c J} \to p p ˉ I^\cdot I ¨ ^{0}$

Search for $I^\cdot_{c} (2 S) \to 2 (I ¨ ^{+} I ¨ ^{-})$ and improved measurement of $I ¨ _{c J} \to 2 (I ¨ ^{+} I ¨ ^{-})$

Search for the massless dark photon with $D^0\toÏÎ³'$ and $D^0\toÎ³Î³'$

Analysis of the dynamics of the decay $D^{+} \to K_{S}^{0} I ¨ ^{0} e^{+} I^½_{e}$

Observation of $I^\cdot_{c}$ (1S, 2S) and $I ¨ _{c J}$ decays to 2 $(I ¨ ^{+} I ¨ ^{-}) I^\cdot$ via $I ¨ $ (3686) radiative transitions

Observation of the Singly Cabibbo-Suppressed Decay $I^_{c}^{+} \to I^£^{-} K^{+} I ¨ ^{+}$