2024-04-30
05:42 |
Search for feebly interacting particles in missing energy $B$ decays at Belle
/ Daniel Marcantonio ; Phillip Urquijo
[BELLE2-PUB-PH-2024-003]
30 April 2024
Recently, there has been great interest in so-called feebly interacting particles (FIPs) - particles beyond the Standard Model that have small couplings to Standard Model particles. [...]
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2024-04-09
04:38 |
Measurement of the $e^+e^- \to \pi^+\pi^-\pi^0$ cross section in the energy range 0.62-3.50 GeV at Belle II
/ Belle II Collaboration
[KEK Preprint 2023-51] [Belle II Preprint 2024-004] [BELLE2-PUB-DRAFT-2023-016] [BELLE2-NOTE-PH-2022-038]
[BELLE2-PUB-PH-2024-002]
07 April 2024
We report a measurement of the $e^+e^- \to \pi^+\pi^-\pi^0$ cross section in the energy range from 0.62 to 3.50 GeV using an initial-state radiation technique. [...]
Fulltext:  PDF;
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2024-01-05
07:03 |
A test of lepton flavor universality with a measurement of $R(D^{*})$ using hadronic $B$ tagging at the Belle~II experiment
/ The Belle II Collaboration
[BELLE2-NOTE-PH-2022-032] [BELLE2-PUB-DRAFT-2023-015]
[BELLE2-PUB-PH-2024-001]
05 January 2024
The ratio of branching fractions $R(D^{*}) = \mathcal{B}(\overline{B} \rightarrow D^{*} \tau^{-} \overline{\nu}_{\tau})$/$\mathcal{B} (\overline{B} \rightarrow D^{*} \ell^{-} \overline{\nu}_{\ell})$, where $\ell$ is an electron or muon, is measured using a Belle~II data sample with an integrated luminosity of $189~\mathrm{fb}^{-1}$ at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider. [...]
arXiv:2401.02840: PDF (additional files);
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2023-01-16
17:57 |
Measurements of Branching Fraction and time-dependent {\boldmath $C\!P$} Asymmetry in {\boldmath $\Bz\rightarrow \KS\piz$} Decays at Belle~II
/ S. Hazra ; A. B. Kaliyar ; G. B. Mohanty
[BELLE2-PUB-PH-2023-001]
16 January 2023
We report the measurements of branching fraction ($\mathcal{B}$) and time dependent $\CP$-violating asymmetry ($\ACP$ and $\SCP$) in the charmless decays $\Bz\to K^0\pi^0$ at Belle~II. [...]
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2022-06-24
01:41 |
Measurement of the $\Omega_c^0$ lifetime at Belle II
/ Angelo Di Canto ; Nisar Nellikunnummel
[BELLE2-PUB-PH-2022-001]
23 June 2022
We report on a measurement of the \Omgc lifetime using $\Omgc\to\Omg\pip$ decays reconstructed in the \epem-collision data collected by Belle~II between 2019 and the first half of 2021, which correspond to \lumi of integrated luminosity. [...]
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2018-08-29
08:32 |
The Belle II Physics Book
/ Emi Kou ; Phillip Urquijo ; B2TiP Theory community ; Belle II Collaboration
[KEK Preprint 2018-27]
[BELLE2-PUB-PH-2018-001]
29 August 2018
We present the physics program of the Belle II experiment, located on the intensity frontier SuperKEKB e+e- collider. [...]
Fulltext: PDF;
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