| Title▼ | Belle II Number▼ | Tags | Submit date▼ | Downloads |
|---|---|---|---|---|
|
Sensitivity Study in the Search for $B^{\pm}\to K^{\pm}a$ (displaced $a\to\gamma\gamma$) Decays at Belle IIPublic
In a set of simple extensions of the Standard Model, Axion Like Particles (ALPs) arise as pseudo Nambu-Goldstone bosons of theories with a spontaneously broken Peccei-Quinn symmetry that is anomalous under the Standard Model gauge symmetry. Due to constraints in flavour-changing current (FCNC) processes, involving the coupling of ALPs directly to… |
BELLE2-MTHESIS-2022-013 | - | 2022-11-11 |
|
| Domain-Specific Language for Querying Particle PropertiesPublic | BELLE2-MTHESIS-2024-013 | - | 2022-11-11 |
|
|
Characterization of monolithic CMOS pixel sensors for charged particle detectors and for high intensity dosimetryPublic
Since the 1980s, when the fabrication of device with very small electrodes (50-100 μm) became a practical possibility, pixel detectors have been widely employed for imaging and tracking charged particles in the vertex region of experiments at accelerators. Thanks to their excellent spatial resolution, today even better than 10 μm, they allow for t… |
BELLE2-MTHESIS-2023-025 | - | 2022-11-11 |
|
|
Analisi del materiale del rivelatore di vertice di Belle II e caratterizzazione di prototipi per possibili sviluppi futuri.Public
Questa tesi si articola in due argomenti principali: nella prima parte analizzo il contenuto in materiale del rivelatore di vertice, mentre nella seconda parte presento l’attuale sviluppo di VTX, il rivelatore di vertice a pixels che nel 2026- 2027 andr`a a sostituire quello attuale VXD. L’analisi del material budget `e stata effettuata confrontan… |
BELLE2-MTHESIS-2023-022 | - | 2022-11-11 |
|
|
Search for a visibly decaying Z' dark boson at Belle II in e^+e^- --> mu^+mu^-mu^+mu^- events.Public
The Standard Model (SM) of fundamental particles and interactions is a highly predictive theory. Despite this, it cannot be considered as a complete description of the nature, because of the many observed phenomena which are not taken into account. Among these phenomena not predicted by the SM, there are observations which could be explained throu… |
BELLE2-PTHESIS-2023-008 | - | 2022-11-11 |
|
|
Search for rare B to charm decays at Belle and sensitivity study for Phi3 at Belle IIPublic
The objective of this work is to search for the rare decay modes like B^{+} → D^{(∗)+}_{s}η, D^{(∗)+}_{s}K0, D^{+}η, and D^{+}K0 along with the branching fraction measurement of B^{0} → D^{0}η and ̄B^{0} → D^{0}K^{0} decay modes. To perform these studies, we used the data sample corresponding to an integrated luminosity of 711 fb^{−1} collected wi… |
BELLE2-PTHESIS-2023-007 | - | 2022-11-11 |
|
|
CP violation measurements at Belle IIPublic
The first results from the Belle II collaboration related to the determination of CP violation in B decays presented. Both time-dependent and direct CP violation measurements are possible at this next generation e+e− B factory. The first determinations of and constraints on all three CKM unitarity triangle angles are presented. Results using data … |
BELLE2-TALK-CONF-2022-139 | - | 2022-11-07 |
|
|
CKM matrix measurements (focus on Vxb)Public
In this presentation, I will provide an overview on the current knowledge on the unitarity of the CKM matrix and its constraining power on new physics contributions. I will further review the current knowledge on the determination of Vub and Vcb, whose values constrain together with the CKM angle γ/ϕ3 constrain the apex of the unitary triangle. Se… |
BELLE2-TALK-CONF-2022-141 | - | 2022-11-07 |
|
|
Measurement of charm baryon lifetimes at Belle IIPublic
Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm baryon lifetimes. Recent results from measurements of the Λc and Ξc baryon lifetimes are presented. The former result is the most precise to date. |
BELLE2-TALK-CONF-2022-137 | - | 2022-11-07 |
|
|
Recent Belle II results related to lepton universality and flavour violation author:Marcel HohmannPublic
This talk presents recent Belle II results on lepton flavor universality and flavour violation tests using B meson and tau decay. The low-background collision environment along with the possibility of partially or fully reconstructing one of the two B mesons in the event offer high precision measurements of B decays or rare decays with missing ene… |
BELLE2-TALK-CONF-2022-140 | - | 2022-11-07 |
|
|
Recent results from Belle IIPublic
Recent results from Belle II |
BELLE2-TALK-CONF-2022-135 | - | 2022-11-07 |
|
|
Searches for light dark sectors at Belle II, Belle and BabarPublic
Talk at DISCRETE22 about recent (about last year) searches for light dark sectors at BaBar, Belle, and Belle II |
BELLE2-TALK-CONF-2022-138 | - | 2022-11-07 |
|
|
Semileptonic and Leptonic B Physics at Belle IIPublic
Semileptonic decays of B mesons that proceed via b->c and b->u transitions, as well as rare leptonic B decays, are fertile grounds for probing new physics beyond the Standard Model. The Belle II experiment presents as an excellent opportunity to study such decays, and since beginning operation in 2019, Belle II has already recorded half of the dat… |
BELLE2-TALK-CONF-2022-136 | - | 2022-11-07 |
|
|
Recent Belle II results on electroweak penguinsPublic
We report on the recent measurements of electroweak and radiative penguin $B$~decays at the Belle~II experiment. We use samples of electron-positron collisions collected at the $\Upsilon(4S)$~resonance. We present the measurement of the branching fractions of $B^{+/0}\to K^*(892)^{+/0}\ell^+\ell^-~(\ell=e, \mu)$, $B^{+/0}\to K^{+/0}J/\psi$, and $B… |
BELLE2-CONF-PROC-2022-019 | - | 2022-10-31 |
|
|
BPAC review on PXD2 : Oct 19, 2022Public
B-factory Programme Advisory Committee Special Review of PXD2 19 October 2022, Remote Meeting |
BELLE2-REPORT-2024-007 | - | 2022-10-26 |
|
|
Belle II results including the dark sectorPublic
In this presentation I`ll summarize the latest belle II results on dark sector. |
BELLE2-TALK-CONF-2022-112 | - | 2022-10-25 |
|
|
Improved Selective Background Monte Carlo Simulation at Belle II with Graph Attention Networks and Weighted EventsPublic
When measuring rare processes at Belle II, a huge luminosity is required, which means a large number of simulations are necessary to determine signal efficiencies and background contributions. However, this process demands high computation costs while most of the simulated data, in particular in case of background, are discarded by the event selec… |
BELLE2-POSTER-CONF-2022-003 | - | 2022-10-24 |
|
|
Machine learning-based lepton identification with the Belle II electromagnetic calorimeterPublic
We present a new model for lepton identification with the Belle II electromagnetic calorimeter (ECL). In the central, barrel region, we use energy-weighted CsI(Tl) crystal images in a convolutional neural network architecture to learn energy deposition patterns of electrons, muons and charged hadrons. In the forward and backward angular regions of… |
BELLE2-PUB-TE-2022-001 | - | 2022-10-20 |
|
|
Measurement of the photon-energy spectrum in inclusive B-> X_s gamma decays identified using hadronic decays of the recoil B meson in 2019–2021 Belle II dataPublic
We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron collisions corresponding to $189$/fb of integrated luminosity collected at the $\Upsilon(4S)$ resonance by the Belle II experiment. The partner $B$ candidates are fully… |
BELLE2-CONF-PH-2022-018 | - | 2022-10-20 |
|
|
Status and prospects for light DM and mediator searches at Belle IIPublic
I will review the status and prospects for Belle II dark sector searches |
BELLE2-TALK-CONF-2022-126 | - | 2022-10-19 |
|