Belle

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2018-12-13
16:52
OpenAccess [PUBDB-2018-05459] Talk (non-conference) (Invited)

Dark sector physics with photons at Belle II
Seminar, Karlsruhe Institute of TechnologyKarlsruhe, Karlsruhe Institute of Technology, Germany, 24 Sep 2018 - 26 Sep 20182018-09-242018-09-26  GO
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2018-12-13
16:17
OpenAccess [PUBDB-2018-05458] Lecture (Invited)

Testing the Standard Model in rare decays of $B$ mesons at the Belle experiment
Lecture at CEA Saclay (Parys- Saclay, France), 5 Mar 2018 - 5 Mar 20182018-03-052018-03-05  GO
Rare decays of B mesons are an ideal probe to search for phenomena beyond the Standard Modelof particle physics, since contributions from new particles can aect the decays on the same level asStandard Model predictions. The rare decay of B ! K*ll oers the quark transition b ! sll, a avorchanging neutral current which is forbidden at tree level in the Standard Model. [...]
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2018-12-13
15:50
OpenAccess [PUBDB-2018-05455] Conference Presentation (Invited)

Motivation for analysing $b→sll$ decays at CEPC
The 2018 International Workshop on the High Energy Circular Electron Positron Collider, CEPS 2018, BeijingBeijing, China, 12 Nov 2018 - 14 Nov 20182018-11-122018-11-14  GO
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2018-12-12
18:08
OpenAccess [PUBDB-2018-05443] Conference Presentation (Invited)

PyrooFit - a python wrapper for RooFit and an analysts feedback from the Belle II collaboration
ROOT 2018 Developers Conference, ROOT 2018, Academy of Sciences and Arts (Akademija nauka i umjetnosti Bosne i Hercegovine)Sarajevo, Academy of Sciences and Arts (Akademija nauka i umjetnosti Bosne i Hercegovine), Bosnia and Herzegovina, 10 Sep 2018 - 13 Sep 20182018-09-102018-09-13  GO
In this talk we present PyrooFit, a fit framework based on python and pandas DataFrames built on top of the ROOT.RooFit package. It currently allows for simple fits of standard PDFs and easy setup of custom PDFs in one or more fit dimensions, but the ultimate goal is to develop it into a general framework independent of a specific back-end.Finally in this talk we report on general feedback collected by the Belle II analysis community so far..
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2018-12-12
17:44
OpenAccess [PUBDB-2018-05441] Conference Presentation (After Call)

Test of lepton flavor universality in rare $B$ decays at Belle
The 30th Rencontres de Blois, Blois 2018, Château of BloisChâteau of Blois, France, 3 Jun 2018 - 8 Jun 20182018-06-032018-06-08  GO
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2018-12-12
17:29
OpenAccess [PUBDB-2018-05439] Talk (non-conference) (After Call)

Recent measurements of radiative andelectroweak penguin decays at Belle
The Lake Louise Winter Institute 2018, University of AlbertaLake Louise, University of Alberta, Canada, 18 Feb 2018 - 24 Feb 20182018-02-182018-02-24  GO
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2018-12-10
17:39
OpenAccess [PUBDB-2018-05382] Talk (non-conference) (Invited)

Status and prospects of the Belle II experiment
Particle Physics Seminar, Universitiy of BirminghamBirmingham, Universitiy of Birmingham, United Kingdom, 5 Dec 20182018-12-05  GO
The Belle II experiment at the SuperKEKB accelerator in Tsukuba, Japan, is a second-generation B factory experiment. Approximately 500 pb-1 of collision data, where taken during May, June, and July of 2018. [...]
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2018-12-05
16:45
OpenAccess [PUBDB-2018-05231] Report/Journal Article
; ; ; et al
Observation of $e ^+ e ^− → γ χ_{ c 1}$ and search for $e ^+ e^ − → γ χ_ {c 0} , γ χ_{ c 2}$ , and $γ η_ c$ at $\sqrt{s}$ near 10.6 GeV at Belle
[arXiv:1810.10291; Belle Preprint-2018-22; KEK Preprint-2018-55]
Using data samples of 89.5  fb$^{−1}$, 711.0  fb$^{−1}$, and 121.4  fb$^{−1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^−$ collider at center-of-mass energies 10.52, 10.58, and 10.867 GeV, respectively, we study the exclusive reactions $e^+ e^− →γχ_{cJ}$ (J=0, 1, 2) and $e^+ e^− →γη_c$. A significant $γχ_{c1}$ signal is observed for the first time at $√s$=10.58  GeV with a significance of 5.1$σ$ including systematic uncertainties. [...]
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2018-12-05
16:26
OpenAccess [PUBDB-2018-05228] Preprint/Report
; ; ; et al
First measurements of absolute branching fractions of $\Xi_c^0$ at Belle
[arXiv:1811.09738; Belle Preprint-2018-25; KEK Preprint-2018-76]
 GO
We present the first measurements of absolute branching fractions of $\Xi_c^0$ decays into $\Xi^- \pi^+$, $\Lambda K^- \pi^+$, and $p K^- K^- \pi^+$ final states. The measurements are made using a data set comprising $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. [...]
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2018-12-05
16:21
OpenAccess [PUBDB-2018-05226] Preprint/Report
; ; ; et al
Search for the rare decay of $B^+ \to \ell^{\,+} \nu_{\ell} \gamma$ with improved hadronic tagging
[arXiv:1810.12976; Belle Preprint 2018-24; KEK Preprint 2018-67]
 GO
We present the result of the search for the rare $B$ meson decay of $B^+ \to \ell^{\,+} \nu_{\ell} \gamma$ with $\ell =e,\mu$. For the search the full data set recorded by the Belle experiment of $711 \, \mathrm{fb}^{-1}$ integrated luminosity near the $\Upsilon (4S)$ resonance is used. [...]
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