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251.
| Charm physics at Belle and Belle II experiments
/ Longke Li
[BELLE2-TALK-CONF-2024-001]
11 January 2024
/ FTCF 2024
In this talk, I present some recent charm results at Belle and Belle II experiments, including the precise measurement of charm lifetimes, branching fractions and decay asymmetry parameter, searches for rare and forbidden decays (Xic semileptonic decay, BNV processes D->p l), and CPV searches for charm hadron decays (D four-body decays and Lambda_c singly Cabibbo-suppressed decays)..
Fulltext:  PDF; |
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252.
| 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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253.
| Recent quarkonium results from Belle II
/ Renu Garg
[BELLE2-CONF-PROC-2024-003]
04 January 2024
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 [...]
Fulltext: PDF; |
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254.
| Recent quarkonium results from Belle II
/ Renu Garg
[BELLE2-CONF-PROC-2024-002]
02 January 2024
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 [...]
Fulltext: PDF; |
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255.
| Study of π΅ β Xπ Ξ0 πΎ/πΎπ with recoil mass approach
/ Swarna Prabha Maharana; ; Vidya Sagar Vobilisetti; ; Saurabh Sandilya; ; Karim Trabelsi
[BELLE2-CONF-PROC-2024-001]
01 January 2024
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. [...]
Fulltext: PDF; |
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256.
| Rare decays at Belle and Belle II
/ Seema Choudhury
[BELLE2-CONF-PROC-2023-050]
30 December 2023
We present the recent results of the rare decays from the Belle and Belle II experiments, collected at the Y(4S) resonance. [...]
Fulltext: PDF; |
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257.
| Lepton universality tests and searches for new physics in charged current decays at Belle II
/ Henrik Junkerkalefeld
[BELLE2-CONF-PROC-2023-049]
29 December 2023
We present recent tests of lepton universality as crucial probes of the Standard Model in semileptonic $B$-meson decays at Belle II. [...]
Fulltext: PDF; |
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258.
| Measurement of time integrated raw asymmetry in D^{0}\longrightarrow K^{0}_{s}K^{0}_{s}}$ decay at Belle II
/ Sanjeeda Bharati Das ; Kavita Lalwani
[BELLE2-CONF-PROC-2023-048]
27 December 2023
$D^{0}\longrightarrow K^{0}_{s}K^{0}_{s}$ 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. [...]
Fulltext: BELLE2-CONF-PROC-2023-048_v2 - PDF; BELLE2-CONF-PROC-2023-048 - PDF; BELLE2-CONF-PROC-2023-048_v3 - PDF; |
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259.
| Time-integrated WS-to-RS ratio of the π«0 ββ π²+π
βπ
0 decay at Belle II
/ Chanchal Sharma, Kavita Lalwani
[BELLE2-CONF-PROC-2023-047]
27 December 2023
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. [...]
Fulltext: PDF; |
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260.
| Dark sector searches with tau-pair events at Belle and Belle II
/ Sourav Dey
[BELLE2-TALK-DRAFT-2023-175]
[BELLE2-TALK-CONF-2023-199]
04 December 2023
/ The 17th International Workshop on Tau Lepton Physics
The existence and unknown nature of dark matter motivate dark sector searches at accelerators. [...]
Fulltext: PDF; |
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