2024-10-24 14:04 |
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2024-10-24 11:35 |
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2024-10-24 11:30 |
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2024-10-24 11:26 |
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2024-10-24 11:21 |
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2024-10-24 10:54 |
[PUBDB-2024-06423]
Contribution to a conference proceedings
Han, Y.
Recent highlights from the Belle and Belle II experiments
202427th International Conference Series in Quantum Chromodynamcs, QCD24, MontpellierMontpellier, France, 8 Jul 2024 - 12 Jul 20242024-07-082024-07-12
1-10 (2024)2024
The BELLE experiment at the KEKB collider in Tsukuba operated as a B-factory until 2018, makingsignificant contributions to flavor physics. Building on this legacy, the BELLE II experiment, anupgraded version, now operates at the SuperKEKB energy-asymmetric 𝑒+𝑒− collider. [...]
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2024-10-24 10:50 |
[PUBDB-2024-06422]
Journal Article
Kuk, R. O. v. ; Michel, J. K. L. ; Sun, Z.
Transverse momentum-dependent heavy-quark fragmentation at next-to-leading order
[DESY-23-174; MIT-CTP 5643; Nikhef 2023-018; arXiv:2404.08622]
The transverse momentum-dependent fragmentation functions (TMD FFs) of heavy (bottom and charm) quarks, which we recently introduced, are universal building blocks that enter predictions for a large number of observables involving final-state heavy quarks or hadrons. They enable the extension of fixed-order subtraction schemes to quasi-collinear limits, and are of particular interest in their own right as probes of the nonperturbative dynamics of hadronization. [...]
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2024-10-23 13:04 |
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2024-10-23 13:02 |
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2024-10-23 12:55 |
[PUBDB-2024-06409]
Journal Article
Adachi, I. ; Aggarwal, L. ; Aihara, H. ; et al
Measurements of the branching fractions of $ {\Xi}_c^0\to {\Xi}^0{\pi}^0 $, $ {\Xi}_c^0\to {\Xi}^0\eta $, and $ {\Xi}_c^0\to {\Xi}^0{\eta}^{\prime } $ and asymmetry parameter of $ {\Xi}_c^0\to {\Xi}^0{\pi}^0 $
[Belle II Preprint 2024-015; KEK Preprint 2024-9; arXiv:2406.04642]
We present a study of $ {\Xi}_c^0\to {\Xi}^0{\pi}^0 $, $ {\Xi}_c^0\to {\Xi}^0\eta $, and $ {\Xi}_c^0\to {\Xi}^0{\eta}^{\prime } $ decays using the Belle and Belle II data samples, which have integrated luminosities of 980 fb$^{−1}$ and 426 fb$^{−1}$, respectively. We measure the following relative branching fractions$ {\displaystyle \begin{array}{c}\mathcal{B}\left({\Xi}_c^0\to {\Xi}^0{\pi}^0\right)/\mathcal{B}\left({\Xi}_c^0\to {\Xi}^{-}{\pi}^{+}\right)=0.48\pm 0.02\left(\textrm{stat}\right)\pm 0.03\left(\textrm{syst}\right),\\ {}\mathcal{B}\left({\Xi}_c^0\to {\Xi}^0\eta \right)/\mathcal{B}\left({\Xi}_c^0\to {\Xi}^{-}{\pi}^{+}\right)=0.11\pm 0.01\left(\textrm{stat}\right)\pm 0.01\left(\textrm{syst}\right),\\ {}\mathcal{B}\left({\Xi}_c^0\to {\Xi}^0{\eta}^{\prime}\right)/\mathcal{B}\left({\Xi}_c^0\to {\Xi}^{-}{\pi}^{+}\right)=0.08\pm 0.02\left(\textrm{stat}\right)\pm 0.01\left(\textrm{syst}\right)\end{array}} $for the first time, where the uncertainties are statistical (stat) and systematic (syst) [...]
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