J. Ahn

collaborators

6 papers

hep-ex2025

Measurement of the $I^_{c}^{+}$ lifetime

Belle II Collaboration, F. AbudinÃ©n, L. Aggarwal +360

An absolute measurement of the $I^_{c}^{+}$ lifetime is reported using $I^_{c}^{+} \to p K^{-} I ¨ ^{+}$ decays in events reconstructed from data collected by the Belle II experiment at t…

hep-ex2025

Search for a pentaquark state decaying into $p J / I ¨ $ in $I^¥ (1, 2 S)$ inclusive decays at Belle

Belle Collaboration, X. Dong, S. M. Zou +162

Using the data samples of 102 million $I^¥ (1 S)$ and 158 million $I^¥ (2 S)$ events collected by the Belle detector, we search for a pentaquark state in the $p J / I ¨ $ final state from $Î¥…

hep-ex2025

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

I. Adachi, L. Aggarwal, H. Ahmed +402

Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we search f…

nucl-ex2025

Cross section Measurements for $^{12}$ C $(K^{-}, K^{+} I^^{-})$ and $^{12}$ C $(K^{-}, K^{+} I^ I^)$ Reactions at 1.8 GeV $/ c$

Woo Seung Jung, Yudai Ichikawa, Byung Min Kang +30

We present a measurement of the production of $I^^{-}$ and $I^ I^$ in the $^{12}$ C $(K^{-}, K^{+})$ reaction at an incident beam momentum of 1.8 GeV/ $c$ , based on high-statistics…

hep-ex2025

Measurement of the Branching Fraction of $I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}$ at Belle

The Belle, Belle II Collaborations, : +426

We report a precise measurement of the ratio of branching fractions $B (I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}) / B (I^_{c}^{+} \to p K^{-} I ¨ ^{+})$ using 980 fb $^{- 1}$ of $e^{+} e^{-}$ data fro…

hep-ex2024

Observation of $I^c ◯ (2012)^{-} \to I^ (1530) K ˉ$ and measurement of the effective couplings of $I^c ◯ (2012)^{-}$ to $I^ (1530) K ˉ$ and $I^ K ˉ$

Belle Collaboration, S. Jia, C. P. Shen +117

Using $I^¥ (1 S)$ , $I^¥ (2 S)$ , and $I^¥ (3 S)$ data collected by the Belle detector, we discover a new three-body decay, $I^c ◯ (2012)^{-} \to I^ (1530) K ˉ \to I^ I ¨ K ˉ$ , with a significance of…

Measurement of the I^c+​ lifetime

Search for a pentaquark state decaying into pJ/I¨ in I^¥(1,2S) inclusive decays at Belle

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

Cross section Measurements for 12C(K−,K+I^−) and 12C(K−,K+I^I^) Reactions at 1.8 GeV/c

Measurement of the Branching Fraction of I^c+​→pKS0​I¨0 at Belle

Observation of I^c◯(2012)−→I^(1530)Kˉ and measurement of the effective couplings of I^c◯(2012)− to I^(1530)Kˉ and I^Kˉ

Measurement of the $I^_{c}^{+}$ lifetime

Search for a pentaquark state decaying into $p J / I ¨ $ in $I^¥ (1, 2 S)$ inclusive decays at Belle

Cross section Measurements for $^{12}$ C $(K^{-}, K^{+} I^^{-})$ and $^{12}$ C $(K^{-}, K^{+} I^ I^)$ Reactions at 1.8 GeV $/ c$

Measurement of the Branching Fraction of $I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}$ at Belle

Observation of $I^c ◯ (2012)^{-} \to I^ (1530) K ˉ$ and measurement of the effective couplings of $I^c ◯ (2012)^{-}$ to $I^ (1530) K ˉ$ and $I^ K ˉ$