Results 21 to 30 of about 523 (135)

New hadrons discovered at BESIII

open access: yesScience Bulletin, 2023
3 pages, 1 figure (The original publication is available at www.scichina.com and https://www.journals.elsevier.com/science-bulletin)
Liu, Zhiqing, Mitchell, Ryan E.
openaire   +3 more sources

Status of Measurement of R Value at BESIII [PDF]

open access: yesEPJ Web of Conferences, 2019
The R value is important for muon magnetic moment aµ and QED running coupling constant evaluated at Z pole, is useful to extract resonance parameters. BESIII experiment collected about 130 energy points between 2.0GeV and 4.6GeV for a precise measurement
Yan Wenbiao
doaj   +1 more source

Confinement of Fermions in Tachyon Matter

open access: yesAdvances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
In this paper, we develop a phenomenological model inspired by QCD that mimics the QCD theory. We use the gauge theory in color dielectric medium (G(ϕ)) coupled with fermion fields to produce scalar and vector confinements in the chromoelectric flux tube scenario. The Abelian theory will be used to approximate the non‐Abelian QCD theory in a consistent
Adamu Issifu   +2 more
wiley   +1 more source

Light Tetraquark State Candidates

open access: yesAdvances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
In this article, we study the axialvector‐diquark‐axialvector‐antidiquark type scalar, axialvector, tensor, and vector sss¯s¯ tetraquark states with the QCD sum rules. The predicted mass mX = 2.08 ± 0.12 GeV for the axialvector tetraquark state is in excellent agreement with the experimental value (2062.8 ± 13.1 ± 4.2) MeV from the BESIII collaboration
Zhi-Gang Wang, Jajati K. Nayak
wiley   +1 more source

Hyperon Structure at BESIII

open access: yesActa Physica Polonica B Proceedings Supplement, 2023
By dedicated off-resonance energy scans, the BESIII experiment pro-vides unique information on the time-like structure of strange and single -charm hyperons. In particular, exploiting polarised and entangled hyperon- antihyperon pairs, has enabled the first complete measurement of the time -like structure of a baryon at a single energy.
openaire   +2 more sources

BESIII Drift Chamber Tracking with Machine Learning [PDF]

open access: yesEPJ Web of Conferences, 2020
The tracking efficiency and the quality for the drift chamber of the BESIII experiment is essential to the physics analysis. The tracking efficiency of the drift chamber of BESIII is high for the high momentum tracks but still have room to improve for ...
Zhang Yao, Yuan Ye, Ma Qiumei
doaj   +1 more source

Muon and Pion Identification at BESIII Based on Machine Learning Algorithm [PDF]

open access: yesEPJ Web of Conferences
BESIII is designed to study physics in the τ-charm energy region utilizing the high luminosity BEPCII. For collision physics experiments like the BESIII experiment, particle identification (PID) is one of the most important and commonly used tools for ...
Zhai Yuncong   +3 more
doaj   +1 more source

Applications of Machine Learning at BESIII [PDF]

open access: yesEPJ Web of Conferences, 2019
BESIII is an experiment at the high precision frontier of hadron physics in τ-charm region. Machine learning techniques have been used to improve the performance of BESIII software.
Liu Beijiang   +4 more
doaj   +1 more source

Studies of charmonium at BESIII [PDF]

open access: yesAIP Conference Proceedings, 2016
Hadron ...
openaire   +2 more sources

Study of the rare decay at the BESIII *

open access: yesChinese Physics C, 2022
Abstract The two-photon radiative decay process was studied, and the main contribution processes, and , were calculated.
Zhang,Feng, Wang,Jian-Xiong
openaire   +1 more source

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