scholarly journals Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

2020 ◽  
Vol 44 (2) ◽  
pp. 021001 ◽  
Author(s):  
F. Abudinén ◽  
I. Adachi ◽  
P. Ahlburg ◽  
H. Aihara ◽  
N. Akopov ◽  
...  
Keyword(s):  
Phase 2 ◽  
Belle Ii ◽  
Integrated Luminosity

scholarly journals X, Y, Z search at Belle II

2019 ◽  
Vol 212 ◽  
pp. 02010
Author(s):  
Elisabetta Prencipe
Keyword(s):  
Line Shape ◽  
Phase 2 ◽  
Phase 3 ◽  
Physics Program ◽  
Data Analyses ◽  
Belle Ii ◽  
Open Issues

The Belle II experiment has successfully concluded Phase-2 of data taking in July 2018, and just started Phase-3, with the complete detector setup. Great perspectives and unique physics cases are enhanced in the Belle II physics program. In the sector of charmonium and spectroscopy, Belle II will investigate several physics processes: ISR physics for the vector states, bottomonium search and the study of the X(3872) line shape are some examples where the contribution of the Belle II experiment will help in better understanding QCD, for which several open issues still remain unsolved. First simulations and data analyses will be shown, with the first available dataset (2018), and the plan for spectroscopy search at Belle II will be discussed.

scholarly journals Development of the Dataset Searcher Webapp for finding data on the Belle II computing grid

2020 ◽  
Vol 245 ◽  
pp. 04021
Author(s):  
Kim Smith ◽  
David Dossett ◽  
Martin Sevior
Keyword(s):  
Large Scale ◽  
Easy Access ◽  
Software Framework ◽  
Scientific Experiment ◽  
Computing Grid ◽  
Belle Ii ◽  
Run Time ◽  
Integrated Luminosity

In any large scale scientific experiment involving enormous quantities of data it is crucial that everyone involved has quick and easy access to all the relevant datasets for their research. By the end of the run time of the Belle II experiment there will be a projected 50 ab−1 of integrated luminosity making it no exception. Until now the only method for locating data of interest was by looking up hand written tables that needed to be regularly updated. In this paper, a new webapp built on the DIRAC software framework will be presented which aims to be the new standard for not only locating data but also storing all its associated metadata.

scholarly journals Charm Physics Prospects at the Belle II Experiment

2018 ◽  
Vol 46 ◽  
pp. 1860062 ◽  
Author(s):  
Long-Ke Li
Keyword(s):  
Rare Decays ◽  
Charm Physics ◽  
Particle Identification ◽  
Leptonic Decays ◽  
Belle Ii ◽  
Flavor Tagging ◽  
New Formula ◽  
Integrated Luminosity

With a total integrated luminosity of 50 ab[Formula: see text] of data and improved performances at the Belle II detector, especially vertex resolution and particle identification, sensitivity estimations for [Formula: see text]-[Formula: see text] mixing, [Formula: see text] violation and time integrated [Formula: see text] asymmetries measurements are presented. Prospects on charm rare decays and (semi-)leptonic decays are discussed. Besides, a new [Formula: see text] flavor-tagging technique, ROE method, is introduced.

scholarly journals Hadronic Cross Section Measurements at Belle and perspectives for BELLE-II

2019 ◽  
Vol 218 ◽  
pp. 02011
Author(s):  
B. Shwartz
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Large Data ◽  
Hadronic Cross Section ◽  
Belle Detector ◽  
Belle Ii ◽  
Integrated Luminosity

Large data amount, about 1 ab−1 of integrated luminosity, collected in experiments with the Belle detector provided a good possibilities for precise measurements of the hadronic cross sections in e+e− annihilation. Main results obtained in this field with the Belle detector as well as perspectives of the new experiments with the Belle II detector at the SuperKEKB collider is discussed in this report.

scholarly journals Data quality monitors of vertex detectors at the start of the Belle II experiment

2020 ◽  
Vol 245 ◽  
pp. 01035
Author(s):  
Peter Kodyš ◽  
Jesus Abudinen ◽  
Karlheinz Georg Ackermann ◽  
Karol Mateusz Adamczyk ◽  
Patrick Ahlburg ◽  
...  
Keyword(s):  
Data Quality ◽  
Quality Monitoring ◽  
Software Framework ◽  
Phase 2 ◽  
Full Data ◽  
Vertex Detector ◽  
Belle Detector ◽  
Electron Positron ◽  
Belle Ii ◽  
Positron Collisions

The Belle II experiment features a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e− collider at KEK in Tsukuba, Japan. The accelerator completed its first phase of commissioning in 2016, and the Belle II detector saw its first electron-positron collisions in April 2018. Belle II features a newly designed silicon vertex detector based on double-sided strip layers and DEPFET pixel layers. A subset of the vertex detector was operated in 2018 to determine background conditions (Phase 2 operation). The collaboration completed full detector installation in January 2019, and the experiment started full data taking. This paper will report on the final arrangement of the silicon vertex detector part of Belle II with a focus on online monitoring of detector conditions and data quality, on the design and use of diagnostic and reference plots, and on integration with the software framework of Belle II. Data quality monitoring plots will be discussed with a focus on simulation and acquired cosmic and collision data.

scholarly journals X, Y, Z Search at Belle II

2019 ◽  
Vol 202 ◽  
pp. 01001
Author(s):  
Elisabetta Prencipe
Keyword(s):  
Phase Ii ◽  
Precise Measurement ◽  
Belle Collaboration ◽  
Potential Models ◽  
Decay Modes ◽  
Belle Ii ◽  
Production Mechanisms ◽  
Integrated Luminosity

Search for exotics has increased importance since the observation of the X(3872), 13 years ago, announced by the Belle Collaboration. The observation of pentaquark states by LHCb, and the Z-charged states observed at Belle and BES III have raised even more the attention to the field. Presently several states are observed that do not fit potential models, and looking for them in different production mechanisms and search for their decay modes it is important, as well as to do precise measurement of their mass, width, lineshape. We shortly report in this note about the plan in searching for exotics at Belle II at KEK (Tsukuba, Japan), that just ended the Phase-II running period, and show the first re-discovery results using 5 pb−1 integrated luminosity.

Rationalization and internalization

2001 ◽  
Vol 60 (4) ◽  
pp. 215-230 ◽  
Author(s):  
Jean-Léon Beauvois
Keyword(s):  
Phase 1 ◽  
Facilitatory Effect ◽  
Phase 2 ◽  
Causal Explanations ◽  
Reduction Effect ◽  
Dissonance Reduction

After having been told they were free to accept or refuse, pupils aged 6–7 and 10–11 (tested individually) were led to agree to taste a soup that looked disgusting (phase 1: initial counter-motivational obligation). Before tasting the soup, they had to state what they thought about it. A week later, they were asked whether they wanted to try out some new needles that had supposedly been invented to make vaccinations less painful. Agreement or refusal to try was noted, along with the size of the needle chosen in case of agreement (phase 2: act generalization). The main findings included (1) a strong dissonance reduction effect in phase 1, especially for the younger children (rationalization), (2) a generalization effect in phase 2 (foot-in-the-door effect), and (3) a facilitatory effect on generalization of internal causal explanations about the initial agreement. The results are discussed in relation to the distinction between rationalization and internalization.

Idalopirdin bei Alzheimererkrankung: nicht besser als Plazebo

2018 ◽  
Vol 86 (08) ◽  
pp. 456-457
Keyword(s):  
Phase 2 ◽  
Phase 3 ◽  
Alzheimer Demenz

Die Blockade von Serotoninrezeptoren, insbesondere des Serotonin-Rezeptortyps 5-HT6, als Zusatztherapie in Kombination mit Cholinesterasehemmer, hat in experimentellen Versuchen sowie in einer Phase-2-Studie positive Effekte bei Demenz gezeigt. Im Rahmen eines Phase-3 Entwicklungsprogramms wurde nun die Effektivität des selektiven Serotoninrezeptor-Antagonisten Idalopirdin bei leichter bis mittelschwerer Alzheimer Demenz geprüft.

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