A. Soﬀer

activity

20242026

collaborators

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6 papers · 1 filter

hep-ex2026

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +417

Using a data sample of 427.9 fb $^{- 1}$ collected by the Belle~II detector at or near the $I^¥ (4 S)$ and $I^¥ (10753)$ resonances, the cross sections for $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ $ $(h=Ï/K…

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…

hep-ex2026

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^ˉ _{c}^{' -}$ and $B^{0} \to I^£_{c} (2455)^{0} I^ˉ _{c}^{'0}$

Belle, Belle II Collaborations, : +403

We report the first observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^ˉ _{c}^{' -}$ and $B^{0} \to I^£_{c} (2455)^{0} I^ˉ _{c}^{'0}$ , with significances of $6.4\,…

hep-ex2025

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^_{c}^{-}$ and $B^{0} \to I^£_{c} (2455)^{0} I^_{c}^{0}$

Belle, Belle II Collaborations, : +386

We report the first observation of the two-body baryonic decays $B^{+} \to I^£_{c} (2455)^{++} I^_{c}^{-}$ and $B^{0} \to I^£_{c} (2455)^{0} I^_{c}^{0}$ with signific…

hep-ex2025

Observation of time-dependent $C P$ violation and measurement of the branching fraction of $B^{0} \to J / I ¨ I ¨ ^{0}$ decays

Belle II Collaboration, I. Adachi, L. Aggarwal +391

We present a measurement of the branching fraction and time-dependent charge-parity ( $C P$ ) decay-rate asymmetries in $B^{0} \to J / I ¨ I ¨ ^{0}$ decays. The data sample was collected with t…

hep-ex2024

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for $B \to I ¨ I^^{3}$ decays using Belle and Belle II data

Belle II Collaboration, I. Adachi, K. Adamczyk +407

We present measurements of $B^{+} \to I ¨ ^{+} I^^{3}$ and $B^{0} \to I ¨ ^{0} I^^{3}$ decays using a combined data sample of $772 \times 1 0^{6}$ $B B$ pairs collected by the…

Study of e+e−→h+h−J/I¨ (h=I¨, K, p) via initial-state radiation at Belle~II

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

Observation of the decays B+→I^£c​(2455)++I^ˉc′−​ and B0→I^£c​(2455)0I^ˉc′0​

Observation of the decays B+→I^£c​(2455)++I^c−​ and B0→I^£c​(2455)0I^c0​

Observation of time-dependent CP violation and measurement of the branching fraction of B0→J/I¨I¨0 decays

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for B→I¨I^3 decays using Belle and Belle II data

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

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

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^ˉ _{c}^{' -}$ and $B^{0} \to I^£_{c} (2455)^{0} I^ˉ _{c}^{'0}$

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^_{c}^{-}$ and $B^{0} \to I^£_{c} (2455)^{0} I^_{c}^{0}$

Observation of time-dependent $C P$ violation and measurement of the branching fraction of $B^{0} \to J / I ¨ I ¨ ^{0}$ decays

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for $B \to I ¨ I^^{3}$ decays using Belle and Belle II data