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First determination of the spin and parity of the charmed-strange baryon Xi(c) (2970)(+)
(American Physical Society, 2021-06-16)
We report results from a study of the spin and parity of Xi(c)(2970)(+) using a 980 fb(-1) data sample collected by the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. The decay angle distributions in the ...
Measurement of the Charm-Mixing Parameter y(CP) in D-0 -> K-S(0)Omega Decays at Belle
(American Physical Society, 2020-10-19)
We report the first measurement of the charm-mixing parameter y(CP) in D-0 decays to the CP-odd final state K-S(0 omega). The study uses the full Belle e(+)e(-) annihilation data sample of 976 fb(-1) taken at or near the ...
Test of Lepton-Flavor Universality in BK^{*}ℓ^{+}ℓ^{-} Decays at Belle
(American Physical Society, 2021-04-22)
We present a measurement of RK , the branching fraction ratio BðB → K μþμ−Þ=BðB → K eþe−Þ, for
both charged and neutral B mesons. The ratio for the charged case RK þ is the first measurement ever
performed. In addition, ...
Evidence for X(3872)J/psipi^{+}pi^{-} Produced in Single-Tag Two-Photon Interactions
(American Physical Society, 2021-03-23)
We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in ...
First search for the ηc2(1D) in B decays at Belle
(Springer, 2020-05-08)
The first dedicated search for the ηc2(1D) is carried out using the decays B+→ ηc2(1D)K+, B0 → ηc2(1D)K0S, B0→ ηc2(1D)π−K+, and B+→ ηc2(1D)π+K0S with ηc2(1D) → hcγ. No significant signal is found. For the ηc2(1D) mass range ...
Measurement of the resonant and nonresonant branching ratios in Xi(0)(c) -> Xi K-0(+) K-
(American Physical Society, 2021-06-03)
Using the entire data sample of 980 fb(-1) integrated luminosity collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we present an amplitude analysis measuring the branching fractions of the ...
Measurement of B(Bs→DsX) with Bs semileptonic tagging
(American Physical Society, 2022)
[EN] We report the first direct measurement of the inclusive branching fraction B(B-s -> DsX) via B-s tagging in e(+)e(-) -> gamma(5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays ...
Update of inclusive cross sections of single and pairs of identified light charged hadrons
(American Physical Society, 2020-05-13)
We report new measurements of the production cross sections of pairs of charged pions and kaons as a function of their fractional energies using various fractional-energy definitions. Two different fractional-energy ...
Study of Electromagnetic Decays of Orbitally Excited Xi(C) Baryons
(American Physical Society, 2020-10-26)
Using 980 fb(-1) of data collected with the Belle detector operating at the KEKB asymmetric-energy e(+) e(-) collider, we report a study of the electromagnetic decays of excited charmed baryons Xi(c)(2790) and Xi(c)(2815). ...
Combined analysis of Belle and Belle II data to determine the CKM angle phi(3) using B+ -> D(K(S)(0)h(+)h(-))h(+) decays
(Springer, 2022)
[EN] We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle phi(3) (also known as gamma) using a model-independent Dalitz plot analysis of B+ -> D(K(S)(0)h(+)h(-))h(+), where D is either a D-0 ...