scholarly journals New Tetraquark Spotted in Electron-Positron Collisions

Physics ◽  
2021 ◽  
Vol 14 ◽  
Author(s):  
Sophia Chen
Keyword(s):  
Electron Positron ◽  
Positron Collisions

scholarly journals RECENT τ LEPTON RESULTS FROM BABAR

2014 ◽  
Vol 35 ◽  
pp. 1460440
Author(s):  
ALBERTO LUSIANI
Keyword(s):  
Standard Model ◽  
Branching Fractions ◽  
Charged Particles ◽  
Babar Collaboration ◽  
Final States ◽  
Final State ◽  
Experimental Knowledge ◽  
Electron Positron ◽  
The Standard Model ◽  
Positron Collisions

We report recent measurements on τ leptons obtained by the BABAR collaboration using the entire recorded sample of electron-positron collisions at and around the Υ(4S) (about 470fb-1). The events were recorded at the PEP-II asymmetric collider at the SLAC National Accelerator Laboratory. The measurements include high multiplicity τ decay branching fractions with 3 or 5 charged particles in the final state, a search for the second class current the τ decay τ → πη′ν, τ branching fractions into final states containing two KS mesons, [Formula: see text], with h = π, K, and preliminary measurements of hadronic spectra of τ decays with three hadrons (τ- → h-h+h-ντ decays, where h = π, K). The results improve the experimental knowledge of the τ lepton properties and can be used to improve the precision tests of the Standard Model.

scholarly journals The Online DQM of BESIII

2019 ◽  
Vol 214 ◽  
pp. 01027
Author(s):  
Xiaobin Ji ◽  
Yanjia Xiao ◽  
Jiada Lu ◽  
Fei Li
Keyword(s):  
Data Quality ◽  
General Purpose ◽  
Quality Monitoring ◽  
Software Environment ◽  
Online Data ◽  
Electron Positron ◽  
Reconstruction Software ◽  
Main Components ◽  
Positron Collisions ◽  
Beijing China

The BESIII is a general-purpose experiment for studying electron-positron collisions at BEPCII which is located at IHEP, Beijing, China. It works in the τ-charm region mainly. Several world’s largest samples in this region had been collected. The BESIII DQM is a lightweight online data quality monitoring (DQM) solution at BESIII. It uses the full offline reconstruction software to reconstruct a part of data for real-time monitoring the data quality. The document gives an overview of the BESIII DQM system, including the framework, main components and data flow. The DQM system separates online DAQ and offline software environment as much as possible and is easy to expand.

scholarly journals Recent results on Kaon Physics at KLOE-2

2019 ◽  
Vol 212 ◽  
pp. 09001 ◽  
Author(s):  
Alessandro Di Cicco
Keyword(s):  
Discrete Symmetries ◽  
Charge Asymmetry ◽  
Kaon Physics ◽  
Neutral Kaon ◽  
Meson Mass ◽  
Physics Program ◽  
Neutral Kaons ◽  
Electron Positron ◽  
The Status ◽  
Positron Collisions

KLOE-2 extends the physics program of the forerunner KLOE experiment, especially in the field of discrete symmetries tests with neutral kaons. KLOE and KLOE-2 have collected together the largest sample of electron-positron collisions at an energy equal to the φ-meson mass, corresponding to about 2.4×1010 produced φ mesons. The latest results on neutral kaon physics at KLOE will be reviewed, together with the status and prospects of the analyses of KLOE-2 data. A new measurement of the charge asymmetry in KS semileptonic decays with 1.7 fb−1 of KLOE data, which improves the sensitivity of previous measurements of about a factor two, will be presented. Furthermore, the status of the analysis devoted to directly test T and CPT symmetries in neutral kaons transitions, as well as the search of the pure CP-violating KS → 3π0 decay using part of the recently acquired KLOE-2 dataset, will be presented.

scholarly journals Towards TeV-scale electron-positron collisions: the Compact Linear Collider (CLIC)

2018 ◽  
Vol 49 (1) ◽  
pp. 24-28
Author(s):  
Steffen Doebert ◽  
Eva Sicking
Keyword(s):  
Linear Collider ◽  
Precision Measurements ◽  
Electron Positron ◽  
Positron Collisions ◽  
Energy Frontier ◽  
New Phenomena ◽  
The Universe

The Compact Linear Collider (CLIC), a future electron-positron collider at the energy frontier, has the potential to change our understanding of the universe. Proposed to follow the Large Hardron Collider (LHC) programme at CERN, it is conceived for precision measurements as well as for searches for new phenomena.

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