| Title▼ | Belle II Number▼ | Tags | Submit date▼ | Downloads |
|---|---|---|---|---|
|
Recent results from Belle and Belle IIPublic
Recent results from Belle and Belle II |
BELLE2-TALK-CONF-2024-009 | - | 2024-01-08 |
|
|
Vcb and Vub measurements at Belle and Belle IIPublic
This talk presents the recent |Vcb| and |Vub| results from Belle and Belle II. |
BELLE2-TALK-CONF-2024-011 | - | 2024-01-08 |
|
|
A test of lepton flavor universality with a measurement of $R(D^{*})$ using hadronic $B$ tagging at the Belle~II experimentPublic
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 SuperKEK… |
BELLE2-PUB-PH-2024-001 | - | 2024-01-05 |
|
|
Recent quarkonium results from Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+e^-$ collider is the upgraded successor of the $B$-factory facility at the KEK laboratory, Japan. The designed instantaneous luminosity of the machine is $6 \times 10^{35} \rm cm^{-2}s^{-1}$. The Belle II experiment aims to ultimately accumulate 50 ab$^{-1}$ of data, 50 times more than… |
BELLE2-CONF-PROC-2024-003 | - | 2024-01-04 |
|
|
Recent quarkonium results from Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+e^-$ collider is the upgraded successor of the $B$-factory facility at the KEK laboratory, Japan. The designed instantaneous luminosity of the machine is $6 \times 10^{35} \rm cm^{-2}s^{-1}$. The Belle II experiment aims to ultimately accumulate 50 ab$^{-1}$ of data, 50 times more than… |
BELLE2-CONF-PROC-2024-002 | - | 2024-01-02 |
|
|
Flavor Physics Experiments: Recent Results and Future ProjectionsPublic
Flavor Physics Experiments: Recent Results and Future Projections |
BELLE2-TALK-CONF-2024-012 | - | 2024-01-02 |
|
|
Study of 𝐵 → X𝑐 Λ0 𝐾/𝐾𝑠 with recoil mass approachPublic
In this study we search for decays $B^0\rightarrow X_c^- \Lambda^0 K^+$ and $B^0\rightarrow \overline{X}_c^0 \Lambda^0 K_s^0$ in Belle, where $X_c$ represents a charm baryon. Belle collected data at a center of mass energy close to $\Upsilon(4S)$ resonance, which decays only to two B mesons almost every time. We follow a recoil approach where th… |
BELLE2-CONF-PROC-2024-001 | - | 2024-01-01 |
|
|
Rare decays at Belle and Belle IIPublic
We present the recent results of the rare decays from the Belle and Belle II experiments, collected at the Y(4S) resonance. The data sample from Belle is 711/fb, and 189/fb or 361/fb data sample from Belle II. Here, we report five rare decays involving b→s (d) transitions. The measurement of branching fractions for B→K*ll decays using 189/fb data … |
BELLE2-CONF-PROC-2023-050 | - | 2023-12-30 |
|
|
Lepton universality tests and searches for new physics in charged current decays at Belle IIPublic
We present recent tests of lepton universality as crucial probes of the Standard Model in semileptonic $B$-meson decays at Belle II. All presented analyses use a data sample collected at the $\Upsilon(4S)$ resonance by the Belle II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. We report three analyses that probe … |
BELLE2-CONF-PROC-2023-049 | - | 2023-12-29 |
|
|
Measurement of time integrated raw asymmetry in D^{0}\longrightarrow K^{0}_{s}K^{0}_{s}}$ decay at Belle IIPublic
$D^{0}\longrightarrow K^{0}_{s}K^{0}_{s}$ is a Singly Cabibbo Suppressed decay, which involves the interference of $c\overline{u}\longrightarrow s\overline{s}$ and $c\overline{u}\longrightarrow d\overline{d}$ transitions. Due to such interference, the Charge Parity asymmetry may be enhanced to an observable level within the Standard Model. In this… |
BELLE2-CONF-PROC-2023-048 | - | 2023-12-27 |
|
|
Time-integrated WS-to-RS ratio of the 𝑫0 −→ 𝑲+𝝅−𝝅0 decay at Belle IIPublic
In the standard model, mixing and CP violation in the charm sector are expected to be very small, and thus, they constitute a sensitive probe for potential new physics contributions. The “wrong-sign” 𝐷0 −→ 𝐾+𝜋−𝜋0 decay is one of the most promising channels at Belle II, as this can be produced through two interfering processes: a direct doubly Cabi… |
BELLE2-CONF-PROC-2023-047 | - | 2023-12-27 |
|
|
The Study of Radiative $D_s$ DecaysPublic
The study of weak radiative decays of charmed mesons is still in its developing stage. In the Standard Model (SM), the physics of charm meson is not generally expected to have new physics (NP) discovery potential. The weak decays of $D$ mesons are also difficult to investigate due to the strong final state interactions. It has been pointed out tha… |
BELLE2-CONF-PROC-2023-046 | - | 2023-12-26 |
|
|
Dark Matter Searches at Belle IIPublic
Searches of dark matter particles at Belle II |
BELLE2-TALK-CONF-2023-192 | - | 2023-12-11 |
|
|
Recent results from Belle IIPublic
This talk presents the latest findings from the Belle II experiment, a major project in particle physics conducted at the SuperKEKB electron-positron collider in Japan. The Belle II experiment, a successor to the original Belle experiment, aims to explore the mysteries of the Standard Model of particle physics, particularly in CP violation and the… |
BELLE2-TALK-CONF-2023-193 | - | 2023-12-11 |
|
|
The Silicon Vertex Detector of the Belle II ExperimentPublic
The Belle II experiment operating on the asymmetric e+ e- SuperKEKB collider, located in Tsukuba (Japan), has been collecting data since March 2019. Its excellent vertexing abilities are provided by Vertex Detector (VXD), part of which is Silicon Vertex Detector (SVD) playing a crucial role in the tracking close to the interaction point. SVD opera… |
BELLE2-CONF-PROC-2023-045 | - | 2023-12-05 |
|
|
Measurements of Michel parameters and tests of lepton universality in tau-lepton decays at Belle and Belle IIPublic
Improved measurements of the standard model properties of the tau provide indirect searches for beyond-the-standard-model physics. The low-background samples of $e^{+} e^{-} \rightarrow \tau^{+} \tau^{-}$ events collected by Belle and Belle II allow such measurements. We present a test of the V-A structure of $\tau \rightarrow \mu \nu \nu$ decays … |
BELLE2-TALK-CONF-2023-196 | - | 2023-12-04 |
|
|
Searches for lepton flavor violation in meson decays at BellePublic
We present searches for the charged lepton-flavor-violating decays in $\Upsilon(1S) \to \ell^{\pm}\ell^{\prime\mp}$ and $\Upsilon(1S) \to \gamma \ell^{\pm}\ell^{\prime\mp}$ decays, where $\ell,\ell^\prime=e, \mu, \tau$ using $25 {\rm fb}^{-1}$ of $\Upsilon(2S)$ data. Using 772 million $B\bar{B}$ sample, we search for CLFV in $B^+\to\tau^{\pm}\ell^… |
BELLE2-TALK-CONF-2023-197 | - | 2023-12-04 |
|
|
Partial wave analysis of tau --> pi- pi- pi+ nu decays at BellePublic
We present a partial-wave analysis of decays recorded with the Belle experiment at the KEKB collider. This work provides information on the a1(1420) and a1(1640) resonances, and aims to improve simulation studies necessary for measuring the electric and magnetic dipole moments and Michel parameters of the tau lepton. |
BELLE2-TALK-CONF-2023-195 | - | 2023-12-04 |
|
|
Searches for lepton flavor violation in tau-lepton decays at Belle and Belle IIPublic
Rates of lepton-flavor violation in charged lepton decays are enhanced in many beyond-the-standard-model theories. The low-background samples of e+e− → τ+τ− events collected by Belle and Belle II allow world- leading searches for such decays with tau leptons. We present results for the decays τ → lV 0, where V 0 is a neutral vector meson, τ → lγ,… |
BELLE2-TALK-CONF-2023-194 | - | 2023-12-04 |
|
|
Dark sector searches with tau-pair events at Belle and Belle IIPublic
The existence and unknown nature of dark matter motivate dark sector searches at accelerators. The Belle and Belle II experiments enable dark sector searches in the sub-GeV mass region. We search for lepton-flavor-violating tau decays of type tau to l alpha, where l is e/mu and alpha is an invisible particle. We also search for the existence of a … |
BELLE2-TALK-CONF-2023-199 | - | 2023-12-04 |
|