K. Kang

collaborators

6 papers

hep-ex2026

Search for the $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decay

Belle, Belle II Collaborations, : +432

We present the first search for $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decays. We look for signal decays in $B^{0} B ˉ^{0}$ events produced in asymmetric-energy electron-positron collisions.…

hep-ex2026

Charged-lepton identification at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +409

Effective particle identification capabilities are a strategic priority for the physics program of the Belle~II experiment. We describe the algorithms used at Belle~II for identify…

hep-ex2026

First evidence of $X (3872) \to I ¨ ^{0} I ¨ _{c 0} (1 P)$ and search for $X (3915) \to I ¨ ^{0} I ¨ _{c 1} (1 P)$

Belle, Belle II Collaborations, : +412

We search for the pionic transitions $X (3872) \to I ¨ ^{0} I ¨ _{c J} (1 P)$ $(J = 0, 1, 2)$ and $X (3915) \to I ¨ ^{0} I ¨ _{c 1}$ in $B^{+} \to I ¨ ^{0} I ¨ _{c J} K^{+}$ decays using the Belle and Belle~II data sam…

hep-ex2026

Measurement of mixing-induced CP violation in the decay $B^{0} \to I ¨ ^{0} I ¨ ^{0}$

Belle II Collaboration, M. Abumusabh, I. Adachi +437

Measurements of charge-parity (CP) violation in quark transitions provide stringent tests of the current theory and sensitive probes of particles or interactions beyond it. We repo…

hep-ex2026

Observation of the radiative decay $D_{s} (2317)^{+} \to D_{s}^{*} I^^{3}$

Belle II Collaboration, M. Abumusabh, I. Adachi +367

We observe the radiative decay $D_{s 0}^{*} (2317)^{+} \to D_{s}^{*+} I^^{3}$ for the first time, with a significance exceeding $10$ standard deviations. The signal is found in the conti…

physics.ins-det2025

Operational experience and performance of the Silicon Vertex Detector after the first long shutdown of Belle II

K. Ravindran, K. Adamczyk, H. Aihara +62

In 2024, the Belle II experiment resumed data taking after the Long Shutdown 1, which was required to install a two-layer pixel detector and upgrade accelerator components. We desc…

Search for the B0→KS0​I¨+I¨− decay

Charged-lepton identification at Belle~II

First evidence of X(3872)→I¨0I¨c0​(1P) and search for X(3915)→I¨0I¨c1​(1P)

Measurement of mixing-induced CP violation in the decay B0→I¨0I¨0

Observation of the radiative decay Ds​(2317)+→Ds∗​I^3

Operational experience and performance of the Silicon Vertex Detector after the first long shutdown of Belle II

Search for the $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decay

First evidence of $X (3872) \to I ¨ ^{0} I ¨ _{c 0} (1 P)$ and search for $X (3915) \to I ¨ ^{0} I ¨ _{c 1} (1 P)$

Measurement of mixing-induced CP violation in the decay $B^{0} \to I ¨ ^{0} I ¨ ^{0}$

Observation of the radiative decay $D_{s} (2317)^{+} \to D_{s}^{*} I^^{3}$